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Journal articles on the topic 'Extraction metallurgy'

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Published: 4 June 2021
Last updated: 6 February 2022

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1

Heimala, Seppo. "Extraction metallurgy." International Journal of Mineral Processing 35, no. 1-2 (June 1992): 147–48. http://dx.doi.org/10.1016/0301-7516(92)90010-t.

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2

Warner, N. A. "Extraction metallurgy '89." Minerals Engineering 2, no. 3 (January 1989): 437. http://dx.doi.org/10.1016/0892-6875(89)90015-0.

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3

Barley, R. W. "Extraction Metallurgy '89." Minerals Engineering 2, no. 4 (January 1989): 569–72. http://dx.doi.org/10.1016/0892-6875(89)90091-5.

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4

Doyle, F. M. "Extraction metallurgy '85." International Journal of Mineral Processing 23, no. 1-2 (May 1988): 157–59. http://dx.doi.org/10.1016/0301-7516(88)90011-7.

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5

Phillips, C. V. "Extraction metallurgy (3rd edition)." Minerals Engineering 3, no. 3-4 (January 1990): 381. http://dx.doi.org/10.1016/0892-6875(90)90134-w.

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6

Wilson, A. Matthew, Phillip J. Bailey, Peter A. Tasker, Jennifer R. Turkington, Richard A. Grant, and Jason B. Love. "Solvent extraction: the coordination chemistry behind extractive metallurgy." Chem. Soc. Rev. 43, no. 1 (2014): 123–34. http://dx.doi.org/10.1039/c3cs60275c.

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7

Jena, P. K., and E. A. Brocchi. "Metal Extraction Through Chlorine Metallurgy." Mineral Processing and Extractive Metallurgy Review 16, no. 4 (1996): 211–37. http://dx.doi.org/10.1080/08827509608914136.

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8

JENA, P. K., and E. A. BROCCHI. "Metal Extraction Through Chlorine Metallurgy." Mineral Processing and Extractive Metallurgy Review 16, no. 4 (January 1997): 211–37. http://dx.doi.org/10.1080/08827509708914136.

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9

SHARMA, B. P., and P. K. SINHA. "Extraction and Powder Metallurgy of Beryllium." Mineral Processing and Extractive Metallurgy Review 13, no. 1 (October 1994): 99–112. http://dx.doi.org/10.1080/08827509408914104.

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10

Wilson, A. Matthew, Phillip J. Bailey, Peter A. Tasker, Jennifer R. Turkington, Richard A. Grant, and Jason B. Love. "ChemInform Abstract: Solvent Extraction: The Coordination Chemistry Behind Extractive Metallurgy." ChemInform 45, no. 15 (March 27, 2014): no. http://dx.doi.org/10.1002/chin.201415289.

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11

Pesic, Batric, and Taili Zhou. "Application of ultrasound in extractive metallurgy: Sonochemical extraction of nickel." Metallurgical Transactions B 23, no. 1 (January 1992): 13–22. http://dx.doi.org/10.1007/bf02654031.

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12

Nakabasami, Chieko, and Kenichi Hoshimoto. "Knowledge Extraction from Technical Papers of Metallurgy." Proceedings of Annual Conference, Japan Society of Information and Knowledge 7 (1999): 81–86. http://dx.doi.org/10.2964/jsikproc.7.0_81.

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13

Smellie, Iain A., Yusra Abdelhamid, Cameron L. Carpenter-Warren, David B. Cordes, Clement Elliott, Sarah Lamorte, Iain L. J. Patterson, et al. "A Simplified Extractive Metallurgy Exercise to Demonstrate Selective Extraction of Copper." Journal of Chemical Education 97, no. 4 (February 17, 2020): 1203–7. http://dx.doi.org/10.1021/acs.jchemed.9b00996.

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14

Smellie, Iain A., Ross S. Forgan, Claire Brodie, Jack S. Gavine, Leanne Harris, Daniel Houston, Andrew D. Hoyland, et al. "Solvent Extraction of Copper: An Extractive Metallurgy Exercise for Undergraduate Teaching Laboratories." Journal of Chemical Education 93, no. 2 (December 18, 2015): 362–67. http://dx.doi.org/10.1021/acs.jchemed.5b00688.

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15

Sturzenegger, M., L. Winkel, and C. Guesdon. "Solar extraction of copper: on application of concentrated sunlight in extractive metallurgy." Mineral Processing and Extractive Metallurgy 115, no. 1 (March 2006): 31–40. http://dx.doi.org/10.1179/174328506x91338.

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16

Mishra, Brajendra. "REWAS ’99: The TMS fall extraction and process metallurgy meeting." JOM 51, no. 12 (December 1999): 19–21. http://dx.doi.org/10.1007/s11837-999-0165-9.

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17

Doyle, F. M. "Solvent extraction. Principles and applications to process metallurgy, part 1." International Journal of Mineral Processing 16, no. 3-4 (March 1986): 299–300. http://dx.doi.org/10.1016/0301-7516(86)90037-2.

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18

Dimitrov, Atanas, Vania Lekova, Kiril Gavazov, and Boyan Boyanov. "Investigation of the extraction equilibrium of ion-association complexes of molybdenum (VI) with some polyphenols and thiazolyl blue. extraction-spectrophotometric determination of molybdenum." Open Chemistry 3, no. 4 (December 1, 2005): 747–55. http://dx.doi.org/10.2478/bf02475202.

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AbstractThe extraction process of ternary ion-association complexes of molybdenum (VI) with some polyphenols (4-nitrocatechol, 2,3-dihydroxy naphthalene) and thiazolyl blue has been investigated by using an extraction-spectrophotometric method. The optimum conditions for their quantitative preparation in aqueous medium and subsequent extraction into an organic solvent have been found. The extraction, distribution and association constants, and the recovery factors have been calculated. The composition of the complexes has been determined. A precise, sensitive and simple extraction-spectrophotometric method for determination of molybdenum in products from ferrous metallurgy has been developed.
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19

Dashevskii, V. Ya, A. A. Aleksandrov, V. I. Zhuchkov, and L. I. Leont’ev. "Problem of manganese in Russian metallurgy." Izvestiya. Ferrous Metallurgy 63, no. 8 (October 8, 2020): 579–90. http://dx.doi.org/10.17073/0368-0797-2020-8-579-590.

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Ferrous metallurgical industry is the main consumer of m nese. The production volume of manganese ferroalloys in the world is approximately 1 % of steel production. After the collapse of the Soviet Union, Russian Federation found itself without any manganese ore base. At present, only high-carbon ferromanganese and ferrosilicomanganese are smelted from imported ore in Russia in a limited quantity. The mineral and raw base of manganese ores in Russia is quite large: the balance reserves of manganese ores are about 230 million tons (approximately 2 % of the world), forecast resources – more than 1 billion tons. Quality of the manganese ores is lower than the manganese ores of most major producing countries. Average manganese content in Russian ores is 9 – 23 %. Basis of mineral and raw base of these manganese ores are carbonate ores, share of which is more than 77 %. Manganese ore mining in Russia is sporadic and does not exceed 66 thousand tons per year. Demand of Russian ferroalloy plants, producing manganese ferroalloys, in manganese ores and concentrates is covered by imports. The problem of accelerating the creation of domestic manganese ore base from the position of economic security seems to be very important. It is necessary to solve a number of issues related to the enrichment of poor manganese ores, development of effective technologies for manganese ferroalloys smelting from concentrates obtained after the enrichment of these ores, as well as creation of more advanced methods of manganese concentrates dephosphorization. In the production of manganese ferroalloys from ore to finished alloys, about 50 % of manganese mined from the subsoil is lost; a large number of by-products are formed (sludges of enrichment, slags, screenings of small fractions of ore raw materials and finished products, sludges of smelting process and dust). The use and processing of them allow not only to reduce the consumption of initial mineral raw materials, but also to increase the efficiency of main production and to reduce environmental pollution. Additional extraction of manganese from industrial wastes and improvement of the technological processes for manganese ferroalloys smelting are the ways to increase the through extraction of manganese.
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20

Pawar, Sachin, Raksha Sharma, Girish Keshav Palshikar, Pushpak Bhattacharyya, and Vasudeva Varma. "Cause–Effect Relation Extraction from Documents in Metallurgy and Materials Science." Transactions of the Indian Institute of Metals 72, no. 8 (April 17, 2019): 2209–17. http://dx.doi.org/10.1007/s12666-019-01679-z.

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21

Krasnodębska-Ostręga, Beata, Joanna Pałdyna, Joanna Kowalska, Łukasz Jedynak, and Jerzy Golimowski. "Fractionation study in bioleached metallurgy wastes using six-step sequential extraction." Journal of Hazardous Materials 167, no. 1-3 (August 15, 2009): 128–35. http://dx.doi.org/10.1016/j.jhazmat.2008.12.091.

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22

Zhang, M., V. Kamavaram, and R. G. Reddy. "Ionic liquid metallurgy: novel electrolytes for metals extraction and refining technology." Mining, Metallurgy & Exploration 23, no. 4 (November 2006): 177–86. http://dx.doi.org/10.1007/bf03403345.

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23

Kržanović, Conić, Bugarin, Jovanović, and Božić. "Maximizing Economic Performance in the Mining Industry by Applying Bioleaching Technology for Extraction of Polymetallic Mineral Deposits." Minerals 9, no. 7 (June 28, 2019): 400. http://dx.doi.org/10.3390/min9070400.

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There are many sources to increase value in an integrated mining–metallurgy context. The optimal strategy for concentration of minerals from the ore is one of these sources. The elements of mining-metallurgy operations from resources, infrastructure, mining site, processing, and metallurgy are mutually dependent, and reinforce and interact positively with each other to generate a combined value greater than the sum of their individual contributions. Bioleaching technology is an alternative processing technology for treatment of low-grade sulphide ore, and its application contributes to the achievement of better economic results than the conventional pyrometallurgical technology. This work presents the application of bioleaching technology in laboratory conditions for metal extraction from the polymetallic deposit Tenka in East Serbia, belonging to the company Serbia Zijin Bor Copper Doo (formerly the Mining Smelter Basin Bor Group). Bioleaching of sulphide polymetallic raw material is performed by chemolithoautotrophic microorganisms. Applying the bioleaching technology, the achieved recoveries of metals from the polymetallic ore are as follows: Cu 90%, Au 90%, Ag 80%, Zn 72% and Pb 90%. The calculated values for Net Present Value (NPV) and Internal Rate of Return (IRR) are $ 21.927 million and 12.55%, respectively.
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24

NISHIMURA, Sanji. "Present Situation of Solvent Extraction Technology. Extractive Metallurgy and Recovery of Metal Values from Industrial Wastes." RESOURCES PROCESSING 45, no. 1 (1998): 37–45. http://dx.doi.org/10.4144/rpsj1986.45.37.

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25

Rodionov, Alexander, Marina Danilina, Sofia Blagova, Peter Godlevsky, Nikolai Pimenov, and Stanislav Buslaev. "Improving the sustainability of metal-producing industries in Russia." E3S Web of Conferences 217 (2020): 04009. http://dx.doi.org/10.1051/e3sconf/202021704009.

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In recent years, the metal-producing industries face a range of economic and ecological problems. The authors use content-analysis and statistical methods for analyzing the recent data and make proposals for the development t of metallurgy. The metallurgical industry is in second place among all other industries in terms of atmospheric emissions. Ferrous and non-ferrous metallurgy enterprises are forced to use ore with a very low content of useful components in the extraction of metals. Thus, a huge volume of ore is supplied to beneficiation and smelting, and this, in turn, generates large quantities of waste gases from unused components. The current position of metallurgy companies in Russia does not contribute to the development of new industries for several reasons: lack of funds for the development of large plants; lack of forecast for short-term global demand for ferrous metallurgy products; a growing group of competition from foreign manufacturers for the products provided by the industry. To reduce the level of negative impact of metallurgy on the environment, it is necessary to develop and use new technologies that are safe for the environment. Unfortunately, not all enterprises use purification filters and facilities, although this is mandatory in the activities of every metallurgical enterprise.
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26

Habashi, F. "Copper metallurgy at the crossroads." Journal of Mining and Metallurgy, Section B: Metallurgy 43, no. 1 (2007): 1–19. http://dx.doi.org/10.2298/jmmb0701001h.

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Copper technology changed from the vertical to the horizontal furnace and from the roast reaction to converting towards the end of the last century. However, the horizontal furnace proved to be an inefficient and polluting reactor. As a result many attempts were made to replace it. In the past 50 years new successful melting processes were introduced on an industrial scale that were more energy efficient and less polluting. In addition, smelting and converting were conducted in a single reactor in which the concentrate was fed and the raw copper was produced. The standing problem in many countries, however, is marketing 3 tonnes of sulfuric acid per tonne of copper produced as well as emitting large amounts of excess SO2 in the atmosphere. Pressure hydrometallurgy offers the possibility of liberating the copper industry from SO2 problem. Heap leaching technology has become a gigantic operation. Combined with solvent extraction and electrowinning it contributes today to about 20% of copper production and is expected to grow. Pressure leaching offers the possibility of liberating the copper industry from SO2 problem. The technology is over hundred years old. It is applied for leaching a variety of ores and concentrates. Hydrothermal oxidation of sulfide concentrates has the enormous advantage of producing elemental sulfur, hence solving the SO2 and sulfuric acid problems found in smelters. Precipitation of metals such as nickel and cobalt under hydrothermal conditions has been used for over 50 years. It has the advantage of a compact plant but the disadvantage of producing ammonium sulfate as a co-product. In case of copper, however, precipitation takes place without the need of neutralizing the acid, which is a great advantage and could be an excellent substitute for electrowinning which is energy intensive and occupies extensive space. Recent advances in the engineering aspects of pressure equipment design open the door widely for increased application. .
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27

Zou, Jingtian, Yongguang Luo, Xia Yu, Jing Li, Yunhao Xi, Libo Zhang, Wenqian Guo, and Guo Lin. "Extraction of Indium from By-products of Zinc Metallurgy by Ultrasonic Waves." Arabian Journal for Science and Engineering 45, no. 9 (March 31, 2020): 7321–28. http://dx.doi.org/10.1007/s13369-020-04471-0.

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28

Liu, Shiyuan, Weihua Xue, and Lijun Wang. "Extraction of the Rare Element Vanadium from Vanadium-Containing Materials by Chlorination Method: A Critical Review." Metals 11, no. 8 (August 17, 2021): 1301. http://dx.doi.org/10.3390/met11081301.

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Vanadium as a rare element has a wide range of applications in iron and steel production, vanadium flow batteries, catalysts, etc. In 2018, the world’s total vanadium output calculated in the form of metal vanadium was 91,844 t. The raw materials for the production of vanadium products mainly include vanadium-titanium magnetite, vanadium slag, stone coal, petroleum coke, fly ash, and spent catalysts, etc. Chlorinated metallurgy has a wide range of applications in the treatment of ore, slag, solid wastes, etc. Chlorinating agent plays an important role in chlorination metallurgy, which is divided into solid (NaCl, KCl, CaCl2, AlCl3, FeCl2, FeCl3, MgCl2, NH4Cl, NaClO, and NaClO3) and gas (Cl2, HCl, and CCl4). The chlorination of vanadium oxides (V2O3 and V2O5) by different chlorinating agents was investigated from the thermodynamics. Meanwhile, this paper summarizes the research progress of chlorination in the treatment of vanadium-containing materials. This paper has important reference significance for further adopting the chlorination method to treat vanadium-containing raw materials.
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29

Hrnčíř, Václav, and Petr Květina. "Archaeology of Slavery From Cross-Cultural Perspective." Cross-Cultural Research 52, no. 4 (September 12, 2017): 381–405. http://dx.doi.org/10.1177/1069397117730034.

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Slavery is difficult to ascertain in the archaeological record, especially because of the lack of material evidence. Using the Standard Cross-Cultural Sample of 186 societies, our aim was to find indirect and easily identifiable indicators of the presence of slavery. The results show links between slavery and the expected and familiar domains (e.g., warfare, polygyny, social and political integration) as well as its relationship to metallurgy, which can be considered an innovative finding. This text attempts to explain and give context to the metallurgy relationship with historical examples related to the exploitation of slaves during various stages of the operational chain of metal production. These include raw material extraction, production of charcoal, and construction or reconstruction of smelting furnaces.
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30

Matyushina, V. A., O. B. Kolmachikhina, and K. A. Vakula. "Centrifugation of Interphase Suspension with the Use of Surfactants." Solid State Phenomena 299 (January 2020): 1075–79. http://dx.doi.org/10.4028/www.scientific.net/ssp.299.1075.

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Currently, in non–ferrous metallurgy, hydrometallurgical methods are practiced for metal recovering from copper ore in addition to pyrometallurgy, for example, SX–EW (solvent extraction–electrowinning). Although this technology gives the opportunity to get cathode copper from oxidized ores without thermal impact on the material, it has several disadvantages, one of which is the formation of interphase suspension or “crud” in the extraction process. The interphase suspension impedes and worsens extraction process performances and carries away the large number of valuable components, such as extractant, diluent and copper–containing solution. At present, this interphase suspension is not recycled, instead it is drained from the extractor and stored. Interphase suspension recycling is a highly relevant problem of hydrometallurgical production.
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31

Du, Yi, Jia Man Ding, and Jin Hui Peng. "Research Progress of High Gravity Technology and its Application Prospect in Metallurgical Extraction Reaction." Advanced Materials Research 968 (June 2014): 163–67. http://dx.doi.org/10.4028/www.scientific.net/amr.968.163.

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High gravity technology is an efficient process intensification technology. Its applications in the chemical, materials and other industries have been relatively mature. The basic principles, characteristics and development of this technology are firstly summarized in this paper. And then, its basic theory researches and engineering applications are comprehensively analyzed. Finally, aiming at the liquid extraction problems in metallurgy industry, the application prospects and problems to be solved were put forward.
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32

Stopic, Srecko, and Bernd Friedrich. "Advances in Understanding of the Application of Unit Operations in Metallurgy of Rare Earth Elements." Metals 11, no. 6 (June 18, 2021): 978. http://dx.doi.org/10.3390/met11060978.

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Unit operations (UO) are mostly used in non-ferrous extractive metallurgy (NFEM) and usually separated into three categories: (1) hydrometallurgy (leaching under atmospheric and high pressure conditions, mixing of solution with gas and mechanical parts, neutralization of solution, precipitation and cementation of metals from solution aiming purification, and compound productions during crystallization), (2) pyrometallurgy (roasting, smelting, refining), and (3) electrometallurgy (aqueous electrolysis and molten salt electrolysis). The high demand for critical metals, such as rare earth elements (REE), indium, scandium, and gallium raises the need for an advance in understanding of the UO in NFEM. The aimed metal is first transferred from ores and concentrates to a solution using a selective dissolution (leaching or dry digestion) under an atmospheric pressure below 1 bar at 100 °C in an agitating glass reactor and under a high pressure (40–50 bar) at high temperatures (below 270 °C) in an autoclave and tubular reactor. The purification of the obtained solution was performed using neutralization agents such as sodium hydroxide and calcium carbonate or more selective precipitation agents such as sodium carbonate and oxalic acid. The separation of metals is possible using liquid (water solution)/liquid (organic phase) extraction (solvent extraction (SX) in mixer-settler) and solid-liquid filtration in chamber filter-press under pressure until 5 bar. Crystallization is the process by which a metallic compound is converted from a liquid into a crystalline state via a supersaturated solution. The final step is metal production using different methods (aqueous electrolysis for basic metals such as copper, zinc, silver, and molten salt electrolysis for REE and aluminum). Advanced processes, such as ultrasonic spray pyrolysis, microwave assisted leaching, and can be combined with reduction processes in order to produce metallic powders. Some preparation for the leaching process is performed via a roasting process in a rotary furnace, where the sulfidic ore was first oxidized in an oxidic form which is a suitable for the metal transfer to water solution. UO in extractive metallurgy of REE can be successfully used not only for the metal wining from primary materials, but also for its recovery from secondary materials.
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33

Голик, Владимир, Vladimir Golik, Вячеслав Дзапаров, Viacheslav Dzaparov, Георгий Харебов, and Georgii Kharebov. "THE CONCEPT OF MODERNIZATION OF UNDERGROUND ORE MINING TECHNOLOGIES." Bulletin of Kemerovo State University. Series: Biological, Engineering and Earth Sciences 2017, no. 2 (August 25, 2017): 37–45. http://dx.doi.org/10.21603/2542-2448-2017-2-37-45.

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The article is devoted to the conversion of mining enterprises from open way of development of ore deposits into underground method of development. The aim is regulation of the main preparation stages of the mining industry to diversifi mining and ore processing. The research methodology includes a critical analysis of the theory and practice of production processes, development of recommendations and justifi of effi of modernization of the existing situation. The results of the research . The paper features a characteristic of mining methods and an analysis of their advantages and disadvantages. It formulates the present state of the mining industry in Russia in conditions of the market and toughening of requirements to environmental management. The article explains the environmental and resource essence of the technology of fi the mined-out space with hardening fi mixtures. It offers a description of the technology with the solvent extraction of metals from ore with a focus on underground solvent extraction of off-balance ore in the frame of the combined criterion of completeness of metal extraction technology. The model presented in the article is based on the effectiveness of mechanochemical activation of raw materials for the preparation of hardening fi mixtures. It defi the profi from the involvement of off-balance ore into the manufacture. The paper features the concept of state management of ore-bearing massifs on the basis of the regulation of natural and technogenic stress levels by fi the technological voids with hardening mixtures. Another concept described in the article is the production of metals by solvent extraction and aspects of its implementation, including that by disintegrator. The scope of the results implementation includes mining and processing enterprises, mainly non-ferrous ore exploiting metallurgy. Conclusions . Conversion to underground deposit development requires development of technologies of fi the technological voids with hardening mixtures. These technologies are based on utilization of tailings processing benefi and metallurgy after extracting from them the residual metals by, for example, mechanochemical activation. Comprehensive modernization of technology development increases the completeness of the use of sub-soil resources, contributes to the improvement of the economy of mining enterprises and to improvement of the environment.
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34

Bolzoni, Leandro, E. M. Ruiz-Navas, and Elena Gordo. "Processing of Elemental Titanium by Powder Metallurgy Techniques." Materials Science Forum 765 (July 2013): 383–87. http://dx.doi.org/10.4028/www.scientific.net/msf.765.383.

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Titanium is characterised by an outstanding combination of properties like high strength, low density, good corrosion resistance and biocompatibility. Nonetheless, widespread employment of titanium at the industrial level, especially in the automotive industry, has not been achieved yet because of its high extraction and production costs. Consequently, titanium finds applications mainly in high demanding sectors, such as the aerospace industry or to produce biomedical devices, where the final high cost is not the principal issue. The processing of titanium and its alloys by means of powder metallurgy (PM) techniques is claimed to be a suitable way to reduce the fabrication cost of titanium products as well as offering the possibility to design new alloys which are difficult to obtain using the conventional metallurgical route, for example due to segregation of heavy alloying elements. This work deals with the processing of hydride-dehydride elemental titanium powder by means of different PM methods and aims at investigating the processing of near net-shape, chemically-homogeneous and fine-grained titanium-based components. In particular, properties achievable (i.e. relative density, microstructure and mechanical properties) and problems related to the processing of elemental titanium, by both the conventional PM route of pressing and sintering and the advanced PM method of hot-pressing, are presented.
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35

Lv, Ying Lu, Chao Yi Chen, and Zhi Hui Mao. "Preparation of Alumina from Fly Ash by Sulfuric Acid." Advanced Materials Research 734-737 (August 2013): 1551–54. http://dx.doi.org/10.4028/www.scientific.net/amr.734-737.1551.

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Extraction metallurgy level alumina from fly ash through high-pressure leaching, removing iron, crystallizing and roasting processes were considered. The optimum conditions of high-pressure leaching, removing iron and roasting processes were obtained by experiments. The leaching rate of Al2O3can reach 93.1% and the purity of Al2O3product can reach above 98% under these conditions. The iron content in Al2(SO4)3solution can decrease from 1.21% to 0.10% when fly ash as alkaline agents.
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36

Panayotova, Marinela, and Vladko Panayotov. "Studies on zinc recovery from technogenic waste." E3S Web of Conferences 295 (2021): 03008. http://dx.doi.org/10.1051/e3sconf/202129503008.

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Results from laboratory experiments are presented on extraction of zinc available in waste from lead-zinc metallurgy, mixed with lead-zinc flotation tailings and some waste rock, by leaching it under atmospheric conditions with sulfuric acid (H2SO4) solutions (5 and 10 wt. %) and 30 % hydrogen peroxide in the temperature range of 25 - 80 °C, at leaching time 30 - 120 min. Material leaching with 10 % H2SO4 solution at 70 °C for one hour brings into pregnant leach solution (PLS) around 80 % of zinc available. Imposing an electrochemical impact during the leaching process increases the quantity of leached zinc by around 5 %. Direct electrowinning from the PLS obtains zinc metal of grade 75-76 %. The suggested treatment removes metals-pollutants from accumulated mixed technogenic waste therefore rendering it more environmentally friendly. Experiments showed that old mixed waste from mining, mineral processing and metallurgy activities merits further studies as secondary source of metals.
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37

Karwowska, Beata. "Optimalization of Metals Ions Extraction from Industrial Wastewater Sludge with Chelating Agents / Optymalizacja Procesu Ekstrakcji Jonów Metali Z Przemysłowych Osadów Ściekowych Za Pomocą Roztworów Związków Chelatujących." Archives of Environmental Protection 38, no. 4 (December 1, 2012): 15–21. http://dx.doi.org/10.2478/v10265-012-0036-2.

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Abstract The report presents the results of selected heavy metals (Zn, Cu, Cd, Ni, Pb) removal from industrial wastewater sludge collected from metallurgy industry. As washing solutions two chelating agents were used: EDTA and citric acid. The study was focused on 0.000 (deionized water), 0.010, 0.050, 0.075, 0.100 M and 0.000, 0.050, 0.100, 0.500, 1.000 M, EDTA and citric acid solutions, respectively. Efficiency of EDTA and citric acid solutions for metal removal was studied by extraction of sludge samples with chelators. Chemical extraction of selected metals was effective for both types of solution. Optimal concentration of EDTA was 0.100M for Zn, Ni and Cd, 0.075 M for Cu and Pb. Optimal concentration of citric acid was 0.500 M for all analyzed metals
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38

Dishovsky, N., D. Grigorova, VI Iliev, and S. Borros. "Modified Waste Dispersion Phase from the Extraction Metallurgy as Functional Filler for Rubber-based Materials." Journal of Elastomers & Plastics 42, no. 3 (March 10, 2010): 241–53. http://dx.doi.org/10.1177/0095244310362404.

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39

Vasilkova, A. О., N. V. Vasilkov, О. D. Khmelnitskaya, and G. I. Voyloshnikov. "Analysis of the current state of technologies in the field of recycling technogenic gold-containing raw materials." Proceedings of Irkutsk State Technical University 25, no. 1 (March 20, 2021): 97–107. http://dx.doi.org/10.21285/1814-3520-2021-1-97-107.

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In this article, we review existing approaches to recycling technogenic raw materials (ore dumps, metallurgical production slag, mill tailings of ore-dressing plants, etc.), containing non-ferrous and noble metals, which are accumulated in almost non-ferrous metallurgy industries. An analysis of existing technologies for processing technogenic raw materials (pyrite cinders and flotation tailings of concentration plants), which include enrichment, pyro- and hydrometallurgical and combined ways of extracting valuable components, was conducted on the basis of a review of published sources. It was shown that enrichment (screening, desliming in a hydrocyclone, enrichment using a concentration table, magneticliquid separation, flotation), pyrometallurgical and combined ways for extracting noble metals from this type of raw materials are unprofitable. The most satisfactory results were obtained using hydrometallurgical methods to extract valuable components from technogenic raw materials. Various solvents, such as sodium cyanide, thiocarbamide, sodium thiosulphate and sodium sulphite were tested as leaching agents. Cyanation proved to be the most effective way to extract noble metals from technogenic raw materials; however, this process is characterised by a high consumption of sodium cyanide. Therefore, it is of importance to discover an approach to extracting valuable components from such problematic products in order to make their processing more cost-effective by reducing cyanide consumption while maintaining gold extraction. According to the obtained results, gold-containing raw materials are promising in terms of extraction of nonferrous and noble metals using hydrometallurgical technologies. Future research should identify rational methods for processing technogenic gold-containing raw materials in order to make the technology more profitable for extracting valuable components.
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Farafonov, D. P., M. M. Serov, A. Yu Patrushev, N. E. Leshchev, and A. S. Yaroshenko. "METAL FIBERS FOR NEW AIRCRAFT ENGINE MATERIALS." Proceedings of VIAM, no. 12 (2020): 23–34. http://dx.doi.org/10.18577/2307-6046-2020-0-12-23-34.

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Presents the results of work carried out at the Federal state unitary enterprise «VIAM» in the framework of a new material science direction – metallurgy of metal fibers. This work was made possible by the development of a method for producing metal fibers called the hanging melt drop extraction method (EUCR). This method is high-performance and allows you to obtain fibers from almost any material. Research has shown that it is possible to improve the performance and environmental characteristics of modern and advanced engines by introducing new classes of materials based on metal fibers.
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Lin, Guo Liang, Si Meng Sun, Xiang Xiang Chen, and Yong Ze Lu. "Influence of Magnetic Field on as Industrial Waste Water Extraction." Advanced Materials Research 402 (November 2011): 345–48. http://dx.doi.org/10.4028/www.scientific.net/amr.402.345.

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With the development of metallurgy and chemical industry, with the exploitation of lean ore recourse, arsenic (As) as an associated by-product has been mined with the exploitation of the main elements. For example, we use pro-oxidation to lixiviate As-Au ore, whose particles are difficult to deal with after its exploitation, fragmentation and rubbing, floatation and nrichment; humid gas acid production is produced by As-Cu ore. These lixivium and waste liquid (industrial waste water) have certain concentration of As. According to the concentration of As, industrial waste water is classified by three kinds; Low As industrial waste water with As100mg/L; Medium As industrial waste water with As 100~300mg/L; High As industrial waste water with As300mg/L; High As can be extracted and enriched through low and Medium As industrial waste water, and then be made into single As through electrolysis sediment or hydration deoxidization. This kind of As waste water can be up to national discharge standard. This experiment is mainly about the influence of magnetic field on As industrial waste water.
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Mikeli, Eleni, Efthimios Balomenos, and Dimitrios Panias. "Utilizing Recyclable Task-Specific Ionic Liquid for Selective Leaching and Refining of Scandium from Bauxite Residue." Molecules 26, no. 4 (February 4, 2021): 818. http://dx.doi.org/10.3390/molecules26040818.

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Ionic liquids (ILs) have attracted great interest in the field of extractive metallurgy mainly because they can be utilized in low temperature leaching processes where they exhibit selectivity and recyclability. A major drawback in mixed aqueous-IL systems, is IL dissolution in the aqueous phase, which leads to IL losses, increasing the overall processing cost. This study advances the method for recovering scandium (Sc) from bauxite residue (BR) using as leaching agent the IL betainium bistriflimide, [Hbet][Tf2N] mixed with water, which has been reported in previous publications. Ionic liquid leachate (IL-PLS) was prepared by leaching BR with a mixture of [Hbet][Tf2N]-H2O and subjected to different stripping experiments using hydrochloric acid. The advancement, presented in this work, is related with the optimization of the metal extraction (stripping) from the IL-PLS, where an aqueous solution with high Sc concentration and minimum metal impurities and minimum IL co-extraction is produced. It is further proven that the metal cation extraction is defined by the stoichiometry of the acidic solution and the dissolution (losses) of the IL in the aqueous phase can be minimized by adjusting the volume ratio and the acid concentration. A two-step stripping process described, achieves the selective increase of Sc concentration by 8 times in the aqueous solution, while maintaining cumulative IL losses to similar levels as the optimum 1 step non-Sc selective stripping process.
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Jana, R. K., and D. D. Akerkar. "Studies of the metal-ammonia-carbon dioxide-water system in extraction metallurgy of polymetallic sea nodules." Hydrometallurgy 22, no. 3 (August 1989): 363–78. http://dx.doi.org/10.1016/0304-386x(89)90031-5.

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Dmitriev, Andrey N., Galina Yu Vitkina, R. V. Alektorov, and E. A. Vyaznikova. "Physical-Chemical and Pyrometallurgical Estimation of Processing of Complex Ores with Extraction of Iron, Vanadium, Titanium." Defect and Diffusion Forum 407 (March 2021): 41–50. http://dx.doi.org/10.4028/www.scientific.net/ddf.407.41.

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The metallurgical characteristics of pellets (reducibility, strength after reaction, softening start and end temperatures), phase composition (X-ray phase analysis), and porosity were studied. Blast furnace smelting parameters were calculated using laboratory pellets with different basicities and degrees of metallization. Pellets were obtained from complex titanium-magnetite ores. The vanadium extraction of this ore into metal did not exceed 10 % during smelting of metallized pellets in an arc steelmaking furnace, but special techniques could raise this to 85 %. According to calculations from the Institute of Metallurgy of the Ural Branch of the Russian Academy of Sciences (IMET UB RAS), vanadium extraction up to 80–90 % can be achieved by using high-base and partially metallized pellets. The influence of changes in the composition and metallurgical characteristics of titanomagnetite pellets with increasing basicity (especially relative to strength after reduction) should be taken into account.
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Ferreira, M. C., Wilson Acchar, Ana M. Segadães, and Sonia Regina Homem de Mello-Castanho. "Second-Generation Aluminium Extraction Residue Used as Devitrification Aid for Glass-Ceramics." Materials Science Forum 587-588 (June 2008): 773–77. http://dx.doi.org/10.4028/www.scientific.net/msf.587-588.773.

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Brazil has one of the world’s most important Bauxite deposits, the raw material for the aluminium extraction metallurgy. This work is focused on finding a suitable application for the white dross residue (WDR), a second-generation waste material produced during the metal recovery from the slag left after the primary extraction of aluminium from the ore. A commercial lime-silica based glass frit was used, to which WDR additions were made (up to 30 wt.%), aimed at studying the devitrification process of the glasses produced. Such mixtures were melted at temperatures varying from 1100 to 1500°C and the resulting fritted glasses were heat treated at 900°C. The starting materials and the mixtures thereof were characterized before and after thermal treatment by differential thermal analysis, X-ray diffraction and fluorescence, and scanning electron microscopy. The results obtained showed that the WDR is easily incorporated into the glass matrix and causes easy devitrification after short heat treatment periods at low temperature.
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Chen, Xiang Yang, Xin Zhe Lan, Qiu Li Zhang, Yu Hong Tian, Hong Zhou Ma, and Lin Bo Li. "Experimental Study on Extraction of Vanadium from Stone Coal by Microwave Pretreatment." Advanced Materials Research 148-149 (October 2010): 1518–22. http://dx.doi.org/10.4028/www.scientific.net/amr.148-149.1518.

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The microwave is the electromagnetic radiation with the frequency in the between 300 MHz~300GHz. The microwave technology in metallurgy application research are mainly in heating, drying, oxide reduction, mineral processing such as the pretreatment of refractory gold and waste treatment, and metal recovery. The stone coal vanadium ore grinded was dealt with the microwave pretreatment in this article, in order to study the effect of factors such as the heating-up characteristics and weightlessness rate of this ore, and then the ore by pretreatment was carried on the leaching experiments, compared with the vanadium mine with no microwave pretreatment, the results was shown that every different microwave pretreatment way were able to improve leaching rate. The ore pretreated by microwave with heating 5 minutes, the leaching rate was improved almost 13% compared with the routine leaching. If the time for no treatment was increased, the stone coal vanadium ore had been already sintered, instead, reducing the leaching rate.
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Ebert, Elena L., Andrey Bukaemskiy, Fabian Sadowski, Steve Lange, Andreas Wilden, and Giuseppe Modolo. "Reprocessability of molybdenum and magnesia based inert matrix fuels." Nukleonika 60, no. 4 (December 1, 2015): 871–78. http://dx.doi.org/10.1515/nuka-2015-0124.

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Abstract This work focuses on the reprocessability of metallic 92Mo and ceramic MgO, which is under investigation for (Pu,MA)-oxide (MA = minor actinide) fuel within a metallic 92Mo matrix (CERMET) and a ceramic MgO matrix (CERCER). Magnesium oxide and molybdenum reference samples have been fabricated by powder metallurgy. The dissolution of the matrices was studied as a function of HNO3 concentration (1-7 mol/L) and temperature (25-90°C). The rate of dissolution of magnesium oxide and metallic molybdenum increased with temperature. While the MgO rate was independent of the acid concentration (1-7 mol/L), the rate of dissolution of Mo increased with acid concentration. However, the dissolution of Mo at high temperatures and nitric acid concentrations was accompanied by precipitation of MoO3. The extraction of uranium, americium, and europium in the presence of macro amounts of Mo and Mg was studied by three different extraction agents: tri-n-butylphosphate (TBP), N,Nʹ-dimethyl-N,Nʹ-dioctylhexylethoxymalonamide (DMDOHEMA), and N,N,N’,N’- -tetraoctyldiglycolamide (TODGA). With TBP no extraction of Mo and Mg occurred. Both matrix materials are partly extracted by DMDOHEMA. Magnesium is not extracted by TODGA (D < 0.1), but a weak extraction of Mo is observed at low Mo concentration.
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Chen, Shuai, Jie Guan, Hao Yuan, Hongcheng Wu, Weixing Gu, Guilan Gao, Yaoguang Guo, Jue Dai, and Ruijing Su. "Behavior and Mechanism of Indium Extraction from Waste Liquid-Crystal Display Panels by Microwave-Assisted Chlorination Metallurgy." JOM 73, no. 5 (March 10, 2021): 1290–300. http://dx.doi.org/10.1007/s11837-021-04590-5.

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Kolmachikhina, O. B., S. E. Polygalov, and K. A. Vakula. "The Study of Physicochemical Features of Laterite Ores of the Buruktalsky Deposit." Solid State Phenomena 316 (April 2021): 694–98. http://dx.doi.org/10.4028/www.scientific.net/ssp.316.694.

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Currently, there are practiced various pyrometallurgical, hydrometallurgical, and com-bined pyro and hydrometallurgical methods for processing of oxidized nickel ores to produce metal-lic nickel, cobalt, and their compounds in non-ferrous metallurgy. The problem is the difficult ore concentration, and consequently the high consumption of reagents or low extraction of valuable components from it. Ural plants previously implemented the technology of reducing-sulphiding smelting of laterite ore to produce fire nickel and transfer of cobalt to matte. The economic ineffi-ciency of this technology predetermined the search for a new method for processing of significant reserves of oxidized nickel ores in the Ural region.
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Kummer, Larissa, Vander de Freitas Melo, and Yara Jurema Barros. "Lead and zinc in the structure of organic and mineral soil components." Revista Brasileira de Ciência do Solo 37, no. 2 (April 2013): 438–49. http://dx.doi.org/10.1590/s0100-06832013000200015.

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In addition to the more reactive forms, metals can occur in the structure of minerals, and the sum of all these forms defines their total contents in different soil fractions. The isomorphic substitution of heavy metals for example alters the dimensions of the unit cell and mineral size. This study proposed a method of chemical fractionation of heavy metals, using more powerful extraction methods, to remove the organic and different mineral phases completely. Soil samples were taken from eight soil profiles (0-10, 10-20 and 20-40 cm) in a Pb mining and metallurgy area in Adrianópolis, Paraná, Brazil. The Pb and Zn concentrations were determined in the following fractions (complete phase removal in each sequential extraction): exchangeable; carbonates; organic matter; amorphous and crystalline Fe oxides; Al oxide, amorphous aluminosilicates and kaolinite; and residual fractions. The complete removal of organic matter and mineral phases in sequential extractions resulted in low participation of residual forms of Pb and Zn in the total concentrations of these metals in the soils: there was lower association of metals with primary and 2:1 minerals and refractory oxides. The powerful methods used here allow an identification of the complete metal-mineral associations, such as the occurrence of Pb and Zn in the structure of the minerals. The higher incidence of Zn than Pb in the structure of Fe oxides, due to isomorphic substitution, was attributed to a smaller difference between the ionic radius of Zn2+ and Fe3+.
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