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Journal articles on the topic 'Magnesite'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Yin, Yufei. "Development Status of Low-Grade Magnesite Beneficiation Technology." International Journal of Materials Science and Technology Studies 1, no. 2 (2024): 52–59. http://dx.doi.org/10.62051/ijmsts.v1n2.07.

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Magnesite is a non-metallic mineral rich in magnesium. Due to its excellent fire resistance, it is widely used in the manufacture of magnesia-carbon bricks, magnesia and other refractory materials, which are widely used in various fields such as chemical industry and metallurgy. Due to the uneven distribution of magnesite resources and the reduction of high-quality magnesite resources caused by large-scale mining, the selection of low-grade magnesite has become a key problem of magnesium resources. The lower grade ores are abandoned because they contain a large amount of impurities and do not

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2

Smirnov, Andrei N., Igor A. Grishin, and Aleksei V. Masalimov. "Characterizing magnesite heavy-media separation screenings as promising technogenic raw materials." Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal 1 (March 30, 2021): 88–93. http://dx.doi.org/10.21440/0536-1028-2021-2-88-93.

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Introduction. This article discusses the possibility of using technogenic raw materials for the production of magnesia and magnesium oxide. The analysis of domestic industry supply with magnesite and magnesian raw materials is presented. Man-made minerals, such as magnesite screenings, produced in the course of heavy-media separation of ore, are noted to be a promising source of this type of raw material. It has been established that this type of raw material is poorly studied. Research methodology. The applied research methods were substantiated to establish the amount and form of magnesium o

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3

Buckley, H. A., and A. R. Woolley. "Carbonates of the magnesite–siderite series from four carbonatite complexes." Mineralogical Magazine 54, no. 376 (1990): 413–18. http://dx.doi.org/10.1180/minmag.1990.054.376.06.

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AbstractCarbonates of the magnesite-siderite series have been found and analysed in carbonatites from the Lueshe, Newania, Kangankunde, and Chipman Lake complexes. This series has been represented until now only by a few X-ray identifications of magnesite and three published analyses of siderite and breunnerite (magnesian siderite). Most of the siderite identified in carbonatites in the past has proved to be ankerite, but the new data define the complete solid-solution series from magnesite to siderite. They occur together with dolomite and ankerite and in one rock with calcite. The magnesites

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4

Lampropoulou, P., and C. Katagas. "MlNERALOGICAL STUDY AND PROPERTIES OF MAGNESIA REFRACTORIES DERIVED FROM EVIAN MAGNESITE." Bulletin of the Geological Society of Greece 36, no. 1 (2004): 97. http://dx.doi.org/10.12681/bgsg.16585.

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In order for the Greek magnesia industry to retain a high position in the world market, the basic refractories derived from Greek magnesite must remain at the forefront of the international developments. A mineralogical study of magnesia materials produced from Evian magnesite has been carried out with the aim a) to provide detailed characterization of products and microstructures derived from the firing processes of magnesia raw materials and b) to contribute to the development of new magnesia-spinel refractory materials from natural Greek magnesite. The magnesite of N. Evia, Greece, is micro

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5

Hemingway, R. G., E. R. Parker, and N. S. Ritchie. "Dietary availability of magnesium hydroxide powder in sheep and in vivo and in vitro assessments of granular calcined magnesites of different origin." Proceedings of the British Society of Animal Science 1997 (1997): 155. http://dx.doi.org/10.1017/s1752756200595969.

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The standard recommendation for grazing cows to be given 60g calcined magnesite (c. 30 g Mg /day) seems large relative to the ARC (1980) dietary Mg allowance (0.17 coefficient of Mg absorption in the whole diet) of 32.6 g for 30 kg/day milk yield. ARC (1980) estimated the coefficient of absorption of calcined magnesite could be 0.05-0.10 and indicated that supplementary magnesium sources should be readily soluble in rumen liquor. Both temperature of calcination and particle size markedly influence rumen solubility and apparent Mg availability of calcined magnesite (Adam et al. 1996). Magnesium

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6

Taranenkova, V. V., and P. Y. Korekian. "Influence of inorganic additives on the water resistance of a magnesium binder." Voprosy Khimii i Khimicheskoi Tekhnologii, no. 1 (February 2025): 39–44. https://doi.org/10.32434/0321-4095-2025-158-1-39-44.

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Magnesium-based binders are widely used worldwide. Magnesia cements are employed in the production of xylolite, fibrolite, various structural elements, artificial marble, bases for finished floors, plasters, heat-insulating foamed and gas concretes, refractory ramming masses, grindstones, and more. They are characterized by several advantageous properties, including high mechanical strength at the initial stages of hardening; increased flexural strength compared to other types of binders; a compact structure of the hardened cement combined with low true density; low thermal conductivity; high

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7

Adam, C. L., R. G. Hemingway, and N. S. Ritchie. "Influence of manufacturing conditions on the bioavailability of magnesium in calcined magnesites measured in vivo and in vitro." Journal of Agricultural Science 127, no. 3 (1996): 377–85. http://dx.doi.org/10.1017/s0021859600078540.

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SUMMARYDietary calcined magnesite supplements of different particle sizes and temperatures of calcination were examined at Glasgow University Veterinary School in 1981. Balance experiments with wether sheep revealed that particle sizes < 75, 75–150, 150–250 and 500–1000 μm diameter of a feed-grade calcined magnesite all increased urinary output of magnesium to a similar extent but the apparent magnesium availability coefficient for the 500–1000 μm diameter fraction (0·03) was significantly less than for fractions of smaller diameter (0·17–0·23) (P < 0·01). A 1000–2000 μm fraction of fert

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8

Tang, Yuan, Jin Yao, Wanzhong Yin, and Sadan Kelebek. "Molecular Dynamics Simulation of Cetyl Phosphate Adsorption in Flotation of Magnesite and Pertinent Chemical Aspects." Minerals 10, no. 9 (2020): 761. http://dx.doi.org/10.3390/min10090761.

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Magnesite ores are important resources in the production of value-added magnesium materials. Generally, low selectivity of conventional collectors and the requirement of a large amount of depressant has been a motivation for researchers to identify alternate collectors. In this work, the role of potassium cetyl phosphate (PCP) as a new collector in magnesite flotation is investigated using molecular dynamics (MD) simulations and chemical equilibria, electrokinetics and wettability. The results indicate that PCP exhibits a strong collecting ability for magnesite particles even with low concentr

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9

Miryuk, Olga. "Corrosion Resistance of Magnesia Binders in Aggressive Liquids." Environmental and Climate Technologies 29, no. 1 (2025): 171–83. https://doi.org/10.2478/rtuect-2025-0012.

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Abstract The article is devoted to the relevant problem of increasing the durability of magnesia materials. The objective of the work is to study the effect of mineral additives and salt grouting liquid on magnesia binders’ hardening and resistance in aggressive liquid environments. The experiments involved the following starting materials such as: caustic magnesite, metallurgical slag, ash from thermal power plants, and iron ore processing waste. Solutions of magnesium chloride, magnesium sulfate, iron sulfate, and their combinations were used to close magnesia binders. The composition of mag

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10

Wang, Nan, Yue Yuan Li, and Hong Wei Ni. "Preparation of Magnesium Carbonate Whisker by Using Magnesite Tailings." Materials Science Forum 654-656 (June 2010): 2022–24. http://dx.doi.org/10.4028/www.scientific.net/msf.654-656.2022.

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Magnesium carbonate whisker was prepared by thermal decomposition of Mg(HCO3)2 solution that was prepared through hydration and carbonation of light burnt magnesia derived from magnesite tailings. The effects of thermal decomposition conditions on the morphology of magnesium carbonate crystal were investigated. Magnesium carbonate whiskers were successfully prepared when a kind of soluble magnesium salt was added, and magnesium carbonate whiskers with the length of 20 to 60μm and aspect ratio of 10~20 were obtained under the condition of 50 °C thermal decomposition temperature and 200 rpm stir

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11

Gartzos, E. "COMPARATIVE STABLE ISOTOPES STUDY OF THE MAGNESITE DEPOSITS OF GREECE." Bulletin of the Geological Society of Greece 36, no. 1 (2004): 196. http://dx.doi.org/10.12681/bgsg.16619.

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The magnesite deposits of North Evia, Lesvos and Chalkidiki, which are hosted by Alpine type ultramafic rocks, have been studied from an isotopie point of view and are compared with similar magnesite deposits occurring in other countries of central-southeastern Europe and Turkey. Magnesites from N. Evia, Lesvos and Chalkidiki have similar isotopie compositions. They have 513CPDB values ranging from -8.6 %o to -14.8 %o and 518OSMOW values ranging from 24.0 %oto 30.1 %o, which indicate a rather similar formation process for all three areas. The studied Greek magnesite deposits have similar isoto

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12

D., Gopinath, and Gunasekaran S. "The FTIR Spectra of Raw Magnesite and Sintered Magnesite." International Journal of Trend in Scientific Research and Development 2, no. 4 (2018): 1072–76. https://doi.org/10.31142/ijtsrd14224.

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Magnesite is a magnesium carbonate mineral because of its thermal stability and inertness. All the three grades of magnesite both in raw and sintered forms have vast applications. The FTIR spectra of raw magnesite and sintered magnesite samples have been recorded in the mid infrared region of 4000 450 cm 1. In general, vibrational spectroscopy detections can qualitatively and quantitatively distinguish the spectral assignment of specific bands between corresponding bonds and functional groups, as also the observation of spectral profiles can be used to define and differentiate the magnesite Th

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13

Appiah, Alfredtina Akua Abrafi, Julie Hunt, Mohammadbagher Fathi, et al. "Geometallurgical Characterization of the Arthur River Magnesite Deposit, Northwestern Tasmania for Pathways to Production." Minerals 15, no. 3 (2025): 247. https://doi.org/10.3390/min15030247.

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The Arthur River magnesite deposit is in the northwestern part of Tasmania, Australia, within the Arthur Metamorphic Complex. Physical, mineralogical, and chemical characteristics of the deposit were studied using geological drill core logging and analytical techniques (scanning electron microscopy, portable x-ray fluorescence, and laser ablation–inductively coupled plasma–mass spectrometry). The results document variations within the ore body, and three ore types have been identified for the potential production of an economic magnesite concentrate separated from associated gangue minerals (d

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14

Olijár, Andrej, and Branislav Vaňko. "Using of the Principle of Autogenous Crushing in the Production of Caustic Magnesia." Advanced Materials Research 1082 (December 2014): 112–16. http://dx.doi.org/10.4028/www.scientific.net/amr.1082.112.

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Magnesium MgO exists in nature in large quantities as magnesite (MgCO3) and dolomite (CaMg (CO3)2), and in lesser amounts than oxide in the form of mineral called periclase. Magnesite refractory material containing MgO may be obtained from the high purity magnesite ore simple purification and subsequent calcination at a temperature of 500-700 °C.

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15

HEMINGWAY, R. G., E. R. PARKER, J. J. PARKINS, G. FISHWICK, and N. S. RITCHIE. "Bioavailability assessments of granular calcined magnesites derived from magnesite rocks and of magnesium hydroxide powder in sheep." Journal of Agricultural Science 131, no. 2 (1998): 229–35. http://dx.doi.org/10.1017/s0021859698005772.

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Granular calcined magnesites originating from Spain, China and Greece and magnesium hydroxide powder were evaluated in a series of balance experiments conducted with wether sheep (c. 42 kg liveweight) given a basal ration of dried grass at Glasgow University Veterinary School between 1989 and 1994. Four Spanish ‘Agma’ products and three Spanish ‘Navarras’ products contained less material (0–104 g/kg)>1000 μm diameter than four Chinese and four Greek materials 178–483 g/kg). The Spanish products had lower (18–45 g/kg) losses on ignition compared with the Chinese and Greek materials (53–112 g

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16

Gulyaev, Vitalii, Oleksandr Kravchenko, Alla Kovalenko, and Maksym Anatskyi. "REVIEW OF METHODS OF MAGNESIUM OXIDE PRODUCTION." Collection of scholarly papers of Dniprovsk State Technical University (Technical Sciences) 1, no. 46 (2025): 143–51. https://doi.org/10.31319/2519-2884.46.2025.17.

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The article presents a literature review of the main methods of magnesium oxide production. Magnesium oxide is used in many industries as steelmaking, refractory, rubber industry, manufacture of paper, building materials, ceramics, glass, cosmetics, medicine, agriculture and others. 16 million tons of magnesium oxide were produced worldwide in 2023 and this market continue to grow. There are three forms of magnesium oxide: Caustic calcined magnesia, Dead burned magnesia and Fused magnesia. Each of these products exhibits different physical, chemical, and thermal properties due to the different

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17

Mao, Yachun, Dong Xiao, Jinfu Cheng, et al. "Multigrades Classification Model of Magnesite Ore Based on SAE and ELM." Journal of Sensors 2017 (2017): 1–9. http://dx.doi.org/10.1155/2017/9846181.

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Magnesite is an important raw material for extracting magnesium metal and magnesium compound; how precise its grade classification exerts great influence on the smelting process. Thus, it is increasingly important to determine fast and accurately the grade of magnesite. In this paper, a method based on stacked autoencoder (SAE) and extreme learning machine (ELM) was established for the classification model of magnesite. Stacked autoencoder (SAE) was firstly used to reduce the dimension of magnesite spectrum data and then neutral network model of extreme learning machine (ELM) was adopted to cl

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18

Erofeev, Vladimir, Irina Stepina, Renat Badamshin, et al. "Effect of wood fillers on strength and biodegradation of caustic magnesite." BioResources 20, no. 3 (2025): 5790–800. https://doi.org/10.15376/biores.20.3.5790-5800.

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During their usage, caustic magnesite composites are susceptible to aggressive microbial action. This paper investigated the resistance of wood-filled caustic magnesite composites in a standard filamentous fungi medium. Caustic magnesite composites based on caustic magnesite, filled with wood sawdust from lime, ash, pine, and aspen trees were studied. The compositions were cured using magnesium chloride. The findings showed that composites filled with fine-fraction wood powders exhibited improved strength and resistance properties of caustic magnesite. If this requirement is met, then optimal

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19

Wang, Qian Qian, Xiao An Li, De Zhou Wei, and Shu Juan Dai. "Domestic Progress in Making Magnesia from Magnesite by Heat Treatment." Advanced Materials Research 454 (January 2012): 168–73. http://dx.doi.org/10.4028/www.scientific.net/amr.454.168.

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Magnesia is a widely used inorganic chemical product. magnesite is an advantageous resource in China, and also an important source of magnesia. There are tree methods to making magnesia from magnesite using heat treatment. They are light burning, dead burning and melt. In recent years, domestic researches have been done on processes, product performance and process mechanism of these methods.

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20

Atasoy, Ahmet. "The wet high intensity magnetic separation of magnesite ore waste." Chemical Industry 73, no. 5 (2019): 337–46. http://dx.doi.org/10.2298/hemind181010026a.

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The wet high intensity magnetic separation of magnesite ore waste stocked in an open pit of a magnesite mine was investigated in this paper. The received sample was subjected to physical, chemical, thermal and phase characterizations. The magnesite ore waste sample contained 77.69 % MgCO3 and a considerable amount of Fe2O3 (3.14 %). The unwanted silica and iron impurities were removed and a high-grade magnesite was experimentally obtained. Results have shown that a high-grade magnesite was obtained after subjecting the non-magnetic portion of the processed sample twice at 1.8 T. It was possibl

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21

Van der Laan, J., and O. C. Vorster. "The production of hydrotalcite from magnesite ore as non-toxic heat stabiliser for polyvinyl chloride." Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie 24, no. 1/2 (2005): 17–20. http://dx.doi.org/10.4102/satnt.v24i1/2.165.

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In recent years polyvinyl chloride (PVC) processors had to submit to worldwide pressure to convert to environmentally friendly stabilisers such as hydrotalcite (HT), since most of the heat stabilisers currently in use contain heavy metals such as lead, cadmium or barium – these being highly toxic. The presently used HT production process is, however, very expensive as it involves the recovering of magnesium from seawater magnesia. The purpose of this study was to prove that it is indeed possible to produce cost effective and non-toxic HT from an alternative source. During this study the costin

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22

Krishna Rao, B., M. Hanuma Prasad, V. N. Vasudev, and M. S. Sethumadhav. "Origin of Grunerite Schist-Hosted Magnesite Mineralization in Copper Mountain Area, Sandur Schist Belt, Karnataka." Journal Geological Society of India 44, no. 3 (1994): 267–74. http://dx.doi.org/10.17491/jgsi/1994/440304.

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Abstract Magnesite mineralization in the Copper Mountain areaofthe Sandurschist belt occurs scattered in a 5 km long and 50 to 200 m wide grunerite schist unit of Late Archaean age. Magnesite occurs mostly as less than a cm to about 50 cm thick parallel to subparallel veins. The veins are confined to gently dipping joints and tensional fractures transecting the steeply dipping bedding and schistosity of the host rock. Magnesite is cryptocrystalline and is associated with minor amounts of dolomite/magnesian calcite, calcite, cryptocrystalline silica and iron oxyhydroxides. Magnesite veins are e

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23

Cao, Yong Min, and Wen Hui Cao. "The Effects and Criterion of Cl^- on the Moisture Regain and Bittern Accumulation of Magnesite Products." Advanced Materials Research 197-198 (February 2011): 1561–66. http://dx.doi.org/10.4028/www.scientific.net/amr.197-198.1561.

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To obtain the critical quantity of Cl- content when magnesite products absorb the moisture and effloresce, some experiments were done about the effects of certain elements (the density of brine, the active content of magnesia, maintaining time and modifiers, etc.) on the moisture regain and bittern accumulation of magnesite products. By analyzing the content of water-soluble Cl- in magnesite products, the criterion was arrived at and thus the newest examining method, quantitative analysis method, was found out.

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24

Zhang, Wang Nian, Li Wang, and Ni Deng. "The Influences of Addition of MgCO₃ on the Properties of the Magnesia Prepared Using Magnesite." Solid State Phenomena 281 (August 2018): 230–35. http://dx.doi.org/10.4028/www.scientific.net/ssp.281.230.

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Micropowder MgCO3 was added into magnesite as raw materials to prepare magnesia using a two-step calcination method. The sample magnesite was characterized use X-ray diffraction (XRD) and scanning electron microscopy (SEM). Experimental results showed that the sample insulated at 1600° C for 3 hours before and after sintering presented a linear change rate of 15.6 % in the case of without adding micropowder MgCO3, the prepared magnesia had a bulk density of 2.31 g/cm3 and apparent porosity of 32.8 %, while MgO grain size was 3.11 μm. In the case of adding 8 % micropowder MgCO3, the sample magn

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25

Savan, Kumar Sharma, Sankar Mallick Bhaba, and Kumar Parya Tapan. "Decarbonation-rehydration characteristics of Almora magnesite under equilibrium condition." Journal of Indian Chemical Society 93, April 2016 (2016): 443–48. https://doi.org/10.5281/zenodo.5594332.

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Department of Chemical Technology, (Ceramic Engineering Division), University of Technology, Calcutta University, Kolkata-700 009, India <em>E-mail</em> : mailme.tapan@gmial.com <em>Manuscript received 05 November 2015, revised 15 January 2016, accepted 15 January 2016</em> Decarbonation-rehydration study of Almora magnesite carries a great practical significance in preparing different magnesia products, predicting the structure-property relationship of the high magnesia bearing ore for its effective utilization and controlling the drying-firing schedule of magnesite based ceramics. This paper

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26

Nash, M. C., U. Troitzsch, B. N. Opdyke, J. M. Trafford, B. D. Russell, and D. I. Kline. "First discovery of dolomite and magnesite in living coralline algae and its geobiological implications." Biogeosciences 8, no. 11 (2011): 3331–40. http://dx.doi.org/10.5194/bg-8-3331-2011.

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Abstract. Dolomite is a magnesium-rich carbonate mineral abundant in fossil carbonate reef platforms but surprisingly rare in modern sedimentary environments, a conundrum known as the "Dolomite Problem". Marine sedimentary dolomite has been interpreted to form by an unconfirmed, post-depositional diagenetic process, despite minimal experimental success at replicating this. Here we show that dolomite, accompanied by magnesite, forms within living crustose coralline alga, Hydrolithon onkodes, a prolific global tropical reef species. Chemical micro-analysis of the coralline skeleton reveals that

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27

Li, Guo Hua, Shu Jiang Chen, and Lin Tian. "Study on MgO-MgO•Al₂O₃ Bricks Used Burned Zone of Cement Rotary Kiln." Advanced Materials Research 291-294 (July 2011): 3255–58. http://dx.doi.org/10.4028/www.scientific.net/amr.291-294.3255.

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The effects of iron scales and high iron magnesite as well as the content on microstructure and properties of MgO-MgO·Al2O3 bricks used burned zone of large cement rotary kilns have been studied. It focuses on testing coating adherence in this paper. The results show that apparent porosity of adding iron scales sample is higher than the sample by adding high iron magnesite, which is increased with increasing of iron scales content; Compression strength is decreased with increasing of iron scales content, The high iron magnesia cause the irregular change of the compression strength, compression

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Luo, Xu Dong, Dian Li Qu, Guo Dong Zhang, and Hai Xiao Liu. "Structure Characterization of Mg-Al Spinel Synthesized from Industrial Waste." Advanced Materials Research 295-297 (July 2011): 148–51. http://dx.doi.org/10.4028/www.scientific.net/amr.295-297.148.

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Mg-Al spinel has been synthesized by using industrial waste from ferroalloy plant, decomposed magnesite and used MgO-C brick as the main raw materials. The influence of decomposed magnesite and used MgO-C brick addition on crystalline structure, micro-morphology and properties of synthesized Mg-Al spinel are discussed. The synthesized product was characterized by XRD and SEM, and the crystallinity of each crystalline phase is calculated by relevant analytical software such as X'Pert plus and so on. The experimental result show the crystalline phase periclase increase with the increasing of dec

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Gopinath, D., and S. Gunasekaran. "The FTIR Spectra of Raw Magnesite and Sintered Magnesite." International Journal of Trend in Scientific Research and Development Volume-2, Issue-4 (2018): 1072–76. http://dx.doi.org/10.31142/ijtsrd14224.

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Pipiia, V. Т. "Innovative Materials in Architecture and Construction: Magnesite Panels." Vestnik Tomskogo gosudarstvennogo arkhitekturno-stroitel'nogo universiteta. JOURNAL of Construction and Architecture 26, no. 5 (2024): 163–72. http://dx.doi.org/10.31675/1607-1859-2024-26-5-163-172.

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Magnesite panels studied herein, are characterized by high fire resistance, moisture resistance, strength, sound insulation and environmental properties. The relevance is due to the modern trends in sustainable development, imposing high demands on building materials and products. Preference is given to those products or technologies that can potentially be marked as eco-friendly.Purpose: The purpose of this work is to study magnesite panels, an innovative building material, to determine their performance characteristics, including fire resistance, moisture resistance, strength and environment

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Luo, Na, Jingyang Shi, Baobao Yan, and Xiaoping Wang. "Flotation Separation of Magnesite from Dolomite Using Sodium Silicate Modified with Zinc Sulfate as a Selective Depressant." Minerals 14, no. 4 (2024): 355. http://dx.doi.org/10.3390/min14040355.

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Flotation separation of magnesite from dolomite in the presence of SSZS (sodium silicate modified with zinc sulfate) as an inhibitor and NaOL (sodium oleate) as a collector has been studied via flotation tests, zeta potential measurements, contact angle measurements, and Fourier transformation infrared spectroscopy analysis (FT-IR). The flotation tests show that NaOL has strong collecting capacity in magnesite and dolomite flotation, so it is difficult to separate two minerals via flotation without inhibitors. SSZS is used as the depressant, which can selectively inhibit dolomite flotation and

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Агзамов, Ф. А., А. Н. Махмутов, and И. Н. Каримов. "Improvement of oil-well cement formulations for well casing in magnesium aggressive environment." Нефтяная провинция, no. 1(33) (March 30, 2023): 32–45. http://dx.doi.org/10.25689/np.2023.1.32-45.

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Успешный ввод в эксплуатацию и долговечность скважины в первую очередь зависят от качества проведения работ по цементированию затрубного пространства. Многообразие химического состава пластовых вод и высокие температуры, при которых происходит твердение цементного камня, не позволяет однозначно подойти к вопросу выбора состава тампонажной смеси. Наиболее широко распространенные и часто встречающиеся при проводке скважины пластовые воды, содержащие в своем составе ионы магния, хлориды и сульфат-ионы, являются весьма агрессивными по отношению к цементному камню. Магнезиальные соли являются одним

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Hycnar, Elżbieta, Magdalena Sęk, and Tadeusz Ratajczak. "Magnesite as a Sorbent in Fluid Combustion Conditions—Role of Magnesium in SO2 Sorption Process." Minerals 13, no. 3 (2023): 442. http://dx.doi.org/10.3390/min13030442.

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This article presents the results of research on magnesites from the Polish deposits of Szklary, Wiry and Braszowice as SO2 sorbents under the conditions of fluidized bed combustion technology. In practice, magnesites are not used as SO2 sorbents, and the role of magnesium in the desulfurization process under the conditions of fluidized bed combustion technology is evaluated differently among researchers. The literature data question the participation of magnesium in the process of SO2 capture from flue gas and prove its high reactivity. Similarly, previous studies referred to the problem of t

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Luo, Xu Dong, Dian Li Qu, Guo Dong Zhang, and Hai Xiao Liu. "Characterization of Mg-Al Spinel Synthesized with Alkali Corrosion Slag from Aluminum Profile Factory." Applied Mechanics and Materials 71-78 (July 2011): 5054–57. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.5054.

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Mg-Al spinel has been synthesized by using alkali corrosion slag from aluminum profile factory, decomposed magnesite and used MgO-C brick as the main raw materials. The influence of decomposed magnesite and used MgO-C brick powder after calcinations process on crystalline constitution and micro-morphology of synthesized Mg-Al spinel specimens are discussed. The synthesized specimens are characterized by XRD and SEM, and the crystallinity of crystalline phase is calculated by X' Pert plus software. The experimental result shows that the crystalline phase periclase increases with the increasing

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Vandeginste, Veerle. "Effect of pH Cycling and Zinc Ions on Calcium and Magnesium Carbonate Formation in Saline Fluids at Low Temperature." Minerals 11, no. 7 (2021): 723. http://dx.doi.org/10.3390/min11070723.

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The formation of dolomite is very challenging in the laboratory under ambient conditions due to kinetic inhibition. The goal of this study was to test the impact of pH cycling and zinc ions on the formation of magnesium-rich carbonates in saline fluids at a low temperature. Batch reactor experiments were conducted in two series of pH cycling experiments, one without and one with zinc ions, at 43 °C. The results after 36 diel pH cycles indicate a reaction product assemblage of hydromagnesite, aragonite and magnesite in the experiments without zinc ions, and of magnesite and minor aragonite in t

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Zhang, Hui Fang, Hong Liang Huang, Li Fang Zhang, Na Zheng, and Fei Zhao. "Experimental Study on the Re-Bonded Magnesia - Zirconia Refractory for New Dry Process Cement Kiln." Advanced Materials Research 287-290 (July 2011): 823–26. http://dx.doi.org/10.4028/www.scientific.net/amr.287-290.823.

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The use of magnesia-chrome refractories of the cement kiln can generate harmful hexavalent chromium in the environment and be hazardous to your health, so the study on the instead of magnesia-chrome refractories have become urgent issues. The raw material is made up of fused magnesite particles (particle size 0 to 3 mm), fine fused magnesite powder with the size less than 200 meshes and fine fused magnesia-zirconia’s powder with the size less than 320 meshes, polyvinyl alcohol and calcium lignosulfonate liquor being used as the combine. This paper discusses the effect of sinter temperature on

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Li, Xue Feng, Yu Qin Liu, Hui Li, Yun Jiang, and Hong Wen Ma. "Effects of Briquette Forming Condition on the Extraction of Magnesium from Calcined Magnesite via Vacuum Aluminothermic Reduction." Materials Science Forum 849 (March 2016): 168–72. http://dx.doi.org/10.4028/www.scientific.net/msf.849.168.

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Vacuum aluminothermic reduction of magnesia is multi-phase chemical reaction and the briquette forming condition has a great influence on the extent of the reactions. This paper focused on the effect of briquette forming condition on the extraction of magnesium from calcined magnesite. Briquettes were prepared at different conditions, including two forming pressures, four briquette thicknesses and two briquette diameters. The reduction ratio was calculated from the weight loss of the briquette before and after thermal reduction. The obtained condensed magnesium and briquette residues were main

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Kalinkin, Alexander M., Elena V. Kalinkina, Alla G. Ivanova, and Ekaterina A. Kruglyak. "Effect of Magnesite Addition and Mechanical Activation on the Synthesis of Fly Ash-Based Geopolymers." Minerals 12, no. 11 (2022): 1367. http://dx.doi.org/10.3390/min12111367.

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Ca/Mg carbonate minerals, such as calcite and dolomite, play an increasingly important role in the development of alkali-activated binders or geopolymers, which are regarded as promising sustainable cement materials. In contrast to studies on calcite and dolomite, the effect on geopolymer properties of the addition of natural magnesite (magnesium carbonate) to aluminosilicate raw materials has not been investigated. The aim of this study is to investigate the influence of mechanical activation (MA) and natural magnesite addition to fly ash (FA) on the compressive strength of geopolymers based

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Hong, Shan Shan, Yong Li, Ya Qin Liu, et al. "Investigation on the Alkali Resistance Property of Theoretical Composition Magnesia Alumina Spinel Bricks." Advanced Materials Research 503-504 (April 2012): 533–37. http://dx.doi.org/10.4028/www.scientific.net/amr.503-504.533.

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Using alumina-rich MgAl2O4 spinel AR78 and 97 fused magnesite as raw materials, brine as the binder, magnesia alumina spinel bricks close to theoretical composition have been prepared. The phase composition and microstructure of the specimens were analyzed and characterized. The alkali resistance property of specimens was researched using static crucible method. The erosion mechanism of alkali vapor to specimens was studied by XRD, SEM and EDS. The results show that: (1) The alkali resistance property of MgAl2O4 spinel bricks were improved obviously when the addition of magnesite is more than

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Nash, M. C., U. Troitzsch, B. N. Opdyke, J. M. Trafford, B. D. Russell, and D. I. Kline. "Biomineralization of dolomite and magnesite discovered in tropical coralline algae: a biological solution to the geological dolomite problem." Biogeosciences Discussions 8, no. 3 (2011): 5881–906. http://dx.doi.org/10.5194/bgd-8-5881-2011.

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Abstract. Dolomite is a magnesium-rich carbonate mineral abundant in fossil carbonate reef platforms but surprisingly rare in modern sedimentary environments, a conundrum known as the ''Dolomite Problem". Marine sedimentary dolomite has been interpreted to form by an unconfirmed, post-depositional diagenetic process, despite minimal experimental success at replicating this. Here we show that dolomite, accompanied by magnesite, forms within living crustose coralline alga, Hydrolithon onkodes, a prolific global tropical reef species. Chemical micro-analysis of the coralline skeleton reveals that

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Liu, Wenbao, Qiang Zhao, Ruirui Zhang, et al. "Study on Selective Adsorption Behavior and Mechanism of Quartz and Magnesite with a New Biodegradable Collector." Separations 10, no. 12 (2023): 590. http://dx.doi.org/10.3390/separations10120590.

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Research on the efficient flotation desilication of low-grade magnesite is of great significance for the sustainable development of magnesium resources. Traditional collectors usually have some disadvantages, such as poor selectivity, severe environmental pollution, and weak water solubility. To strengthen the desilication flotation process of magnesite ore, the biodegradable surfactant, cocamidopropyl amine oxide (CPAO), was first utilized as the collector for the separation of the magnesite and quartz. The selective adsorption behavior and mechanism of the quartz and magnesite with the CPAO

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Sugila Devi, G., and K. Sudalaimani. "Investigation on Calcined Magnesium-Based Mineral Powder and Its Behavior as Alternative Binder." Advances in Materials Science and Engineering 2020 (August 26, 2020): 1–7. http://dx.doi.org/10.1155/2020/2963529.

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This paper investigates the behavior of calcined powder made of natural magnesite and natural steatite. The magnesite and steatite are made into a powder of ratio 3 : 1 by weight proportion, and the combination is thermally decomposed at a temperature of 1200° Celsius. The calcined powder along with and without Sodium Tripolyphosphate (STPP) salt is tested for its microscopic structural development, consistency, initial setting time, final setting time, and heat of hydration. The powder is made into paste with water/powder ratio as 0.25 and the hardened samples are tested for its compressive s

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Taniguchi, T., D. Dobson, A. P. Jones, R. Rabe, and H. J. Milledge. "Synthesis of cubic diamond in the graphite-magnesium carbonate and graphite-K2Mg(CO3)2 systems at high pressure of 9–10 GPa region." Journal of Materials Research 11, no. 10 (1996): 2622–32. http://dx.doi.org/10.1557/jmr.1996.0330.

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Cubic diamond was synthesized with two systems, (1) graphite with pure magnesium carbonate (magnesite) and (2) graphite with mixed potassium and magnesium carbonate at pressures and temperatures above 9.5 GPa, 1600 °C and 9 GPa, 1650 °C, respectively. At these conditions (1) the pure magnesite is solid, whereas (2) the mixed carbonate exists as a melt. In this pressure range, graphite seems to be partially transformed into hexagonal diamond. Measured carbon isotope δ13C values for all the materials suggest that the origin of the carbon source to form cubic diamond was the initial graphite powd

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Owen, J. Victor, Erin Adlakha, and Delaney Carter. "Crawling Glazes on Mid-Century Modern Maritime Canadian Studio Pottery: Shared or Re-Created?" Material Culture Review 96 (January 31, 2024): 63–82. http://dx.doi.org/10.7202/1109047ar.

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<p>This paper presents compositional data for crawling glazes made by prominent studio potters in New Brunswick and Nova Scotia during the mid-20th century (Erica and Kjeld Deichmann, Eleanor and Foster Beveridge, and Carrie Mackenzie) with the objective of (1) identifying key glaze ingredients, and (2) determining whether glaze recipes were shared by these potters, or if the glaze produced by one (likely the Deichmanns) inspired others to re-create it. Crawling glazes are those that retract during firing, creating “islands”. They commonly have unusual compositions (e.g., high alumina co

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Bilginer, Baki Aykut, and Sinan Turhan Erdoğan. "Development of Magnesium/Calcium Oxalate Cements." Materiales de Construcción 73, no. 350 (2023): e310. http://dx.doi.org/10.3989/mc.2023.298122.

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Magnesium oxalate cement, a novel alternative to portland cement, can be made at room temperature by reacting dead-burned magnesia and salts of oxalic acid. Since oxalic acid can be made using captured carbon dioxide, oxalate cements may even be carbon negative. However, emissions related with the decarbonation of magnesite at high temperatures make this hard to achieve. This study investigates the effect of replacing magnesia with granulated blast furnace slag on some physical and mechanical properties, as well as the mineralogy and microstructure of oxalate cements. Whewellite and Weddellite

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Zhang, Ruinan, Zhaoyang Liu, and Jingkun Yu. "Removal of Silicon from Magnesite by Flotation: Influence of Particle Size and Mechanical Mechanism." Materials 16, no. 18 (2023): 6095. http://dx.doi.org/10.3390/ma16186095.

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The feasibility of producing high-density sintered magnesia with a one-step sintering method was investigated by utilizing finely ground magnesite as raw materials for direct flotation. The mechanism of flotation desilication of microfine grain magnesite was investigated by combining microstructure and chemical properties. The results showed that dodecylamine (DDA) has a sorting effect on magnesite reverse flotation desilication. Under the premise of 150 mg/L sodium polyacrylate (PAANa) as an inhibitor and 300 mg/L DDA as a collector, the content and recovery rate of MgO can reach 83.91% and 7

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Yu, Xuhui, Guyue Hu, Yuchuan Chen, et al. "Genesis of the Large-Scale Kamado Magnesite Deposit on the Tibetan Plateau." Minerals 14, no. 1 (2023): 45. http://dx.doi.org/10.3390/min14010045.

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Lacustrine strata-bound magnesite deposits associated with Alpine-type ultramafic rocks are hydrothermal in origin. The magnesite ores of the Kamado deposit are unconformably underlain by mid-Jurassic marine carbonate and ultramafic rocks of the Bangong-Nujiang ophiolite suite and are in fault contact with hanging wall rocks composed of siliceous sinter. Three types of cryptocrystalline magnesite ores can be identified in Kamado: (1) strata-bound massive magnesites, representing the main ore type in the upper part; (2) banded ores in the lower part; and (3) some vein and stockwork ore in the u

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Shapovalov, A. N., E. V. Ovchinnikova, and V. B. Gorbunov. "Use of magnesian fluxes of the Khalilovo deposit in sinter production." Izvestiya. Ferrous Metallurgy 62, no. 7 (2019): 548–56. http://dx.doi.org/10.17073/0368-0797-2019-7-548-556.

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The article describes the magnesian fluxes properties of the Khalilovo deposit with different proportions of magnesite and serpentine. The results of laboratory experiments on the effect of these fluxes with various magnesite contents on the parameters of sintering process of the Kursk magnetic anomaly ores at JSC “Ural Steel” are presented. The use of experimental magnesian fluxes of the Khalilovo deposit increases the sinter strength, yield and sinter productivity. With the use of experimental fluxes instead of Bakal siderite, an increase in the sinter yield of 3 – 5 % (rel.) can be reached.

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Garcia-Lodeiro, Ines, Salma Chhaiba, Nuria Husillos-Rodriguez, Ángel Palomo, and Hajime Kinoshita. "Development of Magnesium Phosphate Cement Based on Low-Grade MgO." Materials 18, no. 6 (2025): 1198. https://doi.org/10.3390/ma18061198.

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Magnesium phosphate cements (MPCs) are a class of inorganic cements that have gained significant attention in recent years due to their exceptional properties and diverse applications in the construction and engineering sectors, particularly in the confinement of radioactive waste. These cements set and harden through an acid–base reaction between a magnesium source (usually dead-burnt magnesia) and a phosphate source (e.g., KH2PO4). The dead-burnt MgO (DBM) used is typically obtained by calcining pure MgCO3 at temperatures between 1600 and 2000 °C. The present work explores the possibility of

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Han, Jiahong, Xiaoan Li, Shujuan Dai, and Guozhen Liu. "The Flotation Separation of Magnesite and Limonite Using an Amine Collector." Adsorption Science & Technology 2021 (March 6, 2021): 1–12. http://dx.doi.org/10.1155/2021/5534274.

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In order to reduce the iron impurities in magnesite ore and improve the purity of magnesium products, the difference in floatability between magnesite and limonite has been studied by using mixtures with a collecting agent—KD (cationic amine collectors, containing soluble components). Sodium hexametaphosphate, pH, sodium silicate, and sodium carboxymethyl cellulose were used as regulators. Adsorption mechanisms of the reagents on minerals were analyzed by a zeta potential analyzer and infrared spectroscopy. Sodium silicate increased the floatability of both minerals at 11.6. All the three regu

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