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Dissertations / Theses on the topic 'Metallurgy slag'

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Published: 4 June 2021
Last updated: 1 February 2022

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1

Nassyrov, Dmitri. "Slag solidification modeling." Thesis, McGill University, 2013. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=119538.

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Two models able to predict Time-Temperature-Transformation (TTT) diagrams for liquid oxides and oxyfluorides have been developed. One on the basis of the Johnson-Mehl-Avrami-Kolmogorov (JMAK) equation and the other – using Classical Nucleation Theory (CNT). The most recent FactSage database was used for calculating the thermodynamic properties of the liquid and solid phases. The model based on the JMAK equation provided much better agreement with experimental data than the CNT model. The model developed in this study was used to successfully predict TTT diagrams for binary, ternary and multico
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2

Ekengård, Johan. "Slag/Metal Metallurgy in Iron and Steel Melts." Doctoral thesis, KTH, Tillämpad processmetallurgi, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-187228.

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In this work, the metal and slag phase mixing in three steps of a ladle refining operation of steel melts and for an oxygen balance during cooling of cast iron melts have been studied at two Swedish steel plants and at two Swedish cast iron foundries, respectively. In order to predict the oxygen activity in the steel bulk in equilibrium with the top slag as well as in metal droplets in the top slag in equilibrium with the top slag, three slag models were used. In addition, the assumptions of a sulphur-oxygen equilibrium between steel and slag and the dilute solution model for the liquid steel
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3

Ng, Ka Wing 1965. "Skimming of fluid slag." Thesis, McGill University, 2000. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=33340.

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A 1/12 scale tank was constructed to physically simulate the metallurgical skimming process in order to gain a better insight of the skimming of fluid slag from copper anode furnaces. 1-decanol and water were used to represent the slag and the underlying liquid metal respectively. It was observed that slag skimming was comprised of two steps, a transportation step to carry slag to the skimming lip, and a removal step to move the slag across the lip. The efficiency of the transportation by bath surface circulation was strongly affected by the method of creation of the surface movement. Submerge
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4

Svensson, Josefin. "The effect of carbonaceous iron on slag foaming." Thesis, KTH, Materialvetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-233008.

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The practise of slag foaming has become increasingly important within the scrap-based steelmaking, conducted in the electric arc furnace, due to its many advantages. In addition to increasing the efficiency in the furnace, the foaming protects the furnace equipment from wear and reduces noise pollution. The purpose of this project was to investigate the slag foaming generated through chemical reactions that occur at the addition of carbonaceous iron to the slag, as well as to evaluate the experimental method used. A slag composition of 25 wt% FeO, 40 wt% CaO and 35 wt% SiO2 was chosen. The exp
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5

Rosqvist, Emil, and Theodore Vassi. "Characterization of phases in Argon Oxygen Decarburization slag." Thesis, KTH, Materialvetenskap, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-298409.

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Slag is an important part of steelmaking with the AOD (Argon Oxygen Decarburization) process. In this work the focus was on developing a methodology for characterizing phases in slagsamples obtained after decarburization, reduction and desulphurization. Six samples from two heats, or batches, (heat A and B) were prepared by baking in Bakelite and polishing. These were analysed in SEM (Scanning Electron Microscope), with BSE (Backscattered Electrons) and EDS (Energy Dispersive XraySpectroscopy). Images from BSE were then processed inImageJ with a denoise method for advanced fraction analysis. A
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6

Strandkvist, Ida. "A Dissolution Study of Common Ferrous Slag Minerals." Licentiate thesis, Luleå tekniska universitet, Mineralteknik och metallurgi, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-60227.

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Slag is a vital part of metal production since it removes impurities from the metal. As slag is continuously produced, the options are either to dispose slag in landfill or acknowledge slag as a product. Slag can be used in many different applications, ranging from fertilizer to construction material; in some cases, the properties of slag make it a superior alternative to virgin stone materials. The properties and thereby the field of application is determined by the mineralogical composition of the slag. Slag is considered an environmentally friendly material as long as the leaching of certai
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7

Isaksson, Jenny. "Slag Cleaning of a Reduced Iron Silicate Slag by Settling : Influence of Process Parameters and Slag Modification on Copper Content." Licentiate thesis, Luleå tekniska universitet, Mineralteknik och metallurgi, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-84798.

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During the pyrometallurgical extraction of copper, a significant part of the copper is lost with discard slag, which decreases profits, overall copper recovery, and efficiency of raw material usage. Smelting furnace slag usually has a copper content that is close to or higher than that of copper ores. The investigation of copper losses to slag is thus a task of practical significance, as the ore grades are depleting. Slag cleaning, e.g., a settling furnace, can reduce copper losses to slag as the mechanically suspended copper-containing droplets separate from slag under the action of gravity a
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8

Rosén, Rebecca. "A literature study on measurement methods for calculating the FeO activity in slag." Thesis, KTH, Materialvetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-277890.

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During the time we live in, climate change is more important than ever. HYBRIT, formed bySSAB, LKAB, and Vattenfall, is an initiative set out to make the steel production fossil free, by developing a novel process that produce direct reduced iron (DRI) using hydrogen as reagent. Electric arc furnaces (EAF) will then be employed to melt the DRI. For SSAB, it is important to obtain a satisfied dephosphorisation in the EAFs for the production of high strength steel. The composition of the DRI, has a big impact on the dephosphorisation and it is important that the slag has an optimal basicity and
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9

Ökvist, Lena Sundqvist. "Optimisation of the slag formation in a blast furnace charged with 100% pellets." Licentiate thesis, Luleå tekniska universitet, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-18685.

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This work is based on experiences from industrial blast furnaces. Process irregularities when testing self-fluxed pellets Process disturbances when charging increased proportions of coarse pellets Laboratory tests to evaluate the effect of basic fluxes on the slag formation in the bosh and in the raceway have been carried out. Pilot scale tests have been performed to verify the effect of coarse pellets. The effect of reduction degree and the reduction behaviour on the slag formation and blast furnace performance have been evaluated It was found that decreased degree of reduction of pellets or
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10

Kombathula, Sushanth. "Sequestration of carbon dioxide in steel slag." Thesis, KTH, Materialvetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-280716.

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Although Iron and steel industry is essential for the development of society, the industry is responsible for a large portion of CO2 emissions. The industry also produces by-products like metallurgical slag in orders of million tons. The slag is alkaline in nature and rich in Ca and Mg oxides. Upon use the oxide interact with atmospheric CO2 and form carbonates, making them unstable. Storing CO2 in the slag would make it more stable, enhances its life cycle and promotes further usage in various applications. CO2 sequestration can be done through carbonation of steel slag. Carbonation of slag c
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11

Maier, Sara. "Slagg från ArcFume-processer : lakbarhet och återvinningsmöjlighete." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-248039.

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Metaller som bryts och utvinns primärt förekommer tillsammans med många andra metaller i malmer och mineral. Avfallsströmmar från metallindustrin har därför ett varierat innehåll av många olika metaller. Metallerna är ofta skadliga för miljön och kan skapa problem för metallproducenterna om halterna är så höga att avfallen inte ens kan deponeras. Det finns skräddarsydda metallurgiska processer för att upparbeta metallhaltigt avfall, i syfte att utvinna de värdefulla metallerna och producera en lakstabil slagg med lågt metallinnehåll. En lakstabil slagg kan ha miljömässiga fördelar som gör att
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12

Luganova-Chnyrenkova, Tatiana. "Factors affecting behaviour of minor elements in dore metal-soda slag partitioning." Thesis, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=26404.

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A series of experiments determined the influence of oxygen partial pressure and SiO$ sb2$ content in soda slag on the distribution of metals between soda slag and dore metal. Oxygen partial pressure ranged from 10$ sp{-8}$ to one atmosphere and the SiO$ sb2$ content from 0 to 10 wt%.<br>Minor elements, including the precious metals, partition between the dore metal and the soda slag. The main purpose of this research was to determine the process parameters which influence this distribution, and the nature and forms of the precious metals in the metal and in the slag phases.<br>From the results
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13

Spooner, Stephen. "Quantifying the transient interfacial area during slag-metal reactions." Thesis, University of Warwick, 2017. http://wrap.warwick.ac.uk/93620/.

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The steel industry is facing significant competition on a global scale due to the drive for light-weighting and cheaper more sustainable construction. Not aided by oversupply in geographic sectors of the industry, there is significant competition within the slowly shrinking sector. The recent growth in developing countries through installation of modern plant technology has led to the reduction in unique selling points for mature steelmaking locations. As such, to compete with the equalling product capability and innate cheaper production costs within developing areas the industries in Europe
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14

Marriott, Nicola J. "Slag corrosion of MgO aggregates and corresponding MgO-based refractories." Thesis, University of Sheffield, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.251276.

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15

Johnston, Murray. "Thermodynamics of selenium and tellurium in molten metallurgical slags and alloys." University of Western Australia. School of Biomedical, Biomolecular and Chemical Sciences, 2007. http://theses.library.uwa.edu.au/adt-WU2008.0064.

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There are a number of impurity elements present in sulphide ores that can have a deleterious effect on the properties of the final copper metal product. In this thesis, an equilibrium distribution technique was used to determine the thermodynamic behaviour of selenium and tellurium in molten slags used in copper production. Calcium ferrite based slags and copper or silver alloy were equilibrated in magnesia crucibles at temperatures of 1200 to 1400 °C and oxygen partial pressures of 10-11 to 10-0.68 atm. Under conditions typical of those employed during copper converting, the minor elements we
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16

Nkohla, Makiwe Annette. "Characteristics of ferrochrome smelter slag and its implications in metal accounting." Thesis, Cape Peninsula University of Technology, 2006. http://hdl.handle.net/20.500.11838/877.

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Thesis (MTech (Chemical Engineering))--Cape Peninsula University of Technology, 2006<br>Better metallurgical accounting practices are achieved through implementation of robust and accurate analytical techniques, in particular the sample preparation techniques involved, as well as characterization of all possible errors associated with such techniques and those associated with the characteristics of the materials to be analyzed. As a contribution to the AMIRA P754 project which aims at developing standards and tools for metal balancing, reconciliation and reporting from mine resource to fi
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17

Simon, Hellgren. "Secondary Steel Metallurgy Slag Design and MgO-C Refractory Implications : Theoretical and Practical Considerations." Thesis, Luleå tekniska universitet, Industriell miljö- och processteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-76339.

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MgO-C based refractory materials, often used in secondary steel making, are exposed to variouswear mechanisms in its application. The wear could be divided into oxidative, chemical andabrasive categories, all behaving differently and all being influenced by different factors. Dueto the importance of minimizing material loss and to the environmental challenges to run asustainable industry, it is of interest to gain more knowledge of the behavior of the refractorymaterial in use. The present thesis work specifically investigated slag designed of the CaOSiO2-Al2O3-MgO (CSAM) system as well as the
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18

Haji, Amini Shahriar School of Chemical Engineering &amp Industrial Chemistry UNSW. "Dissolution rate and diffusivity of lime in steelmaking slag and development of fluoride-free fluxes." Awarded by:University of New South Wales. School of Chemical Engineering and Industrial Chemistry, 2005. http://handle.unsw.edu.au/1959.4/22469.

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A rotating disk technique was used to determine the dissolution rate and diffusivity of CaO and MgO in slags. The dissolution rate was deduced from the measured changes in concentration of oxides in slag with respect to reaction time. The experimental set- up was initially tested with dissolution of magnesia in the CaO ??? 55 wt% Al2O3 slag at 1430 ??C and a measured rate of 2.7 ??10 -5 g/cm2.s was obtained. The dissolution rate was increased by slag chemistry and ranged from 6.5??10-5 to 2.1??10-4 g/cm2.s. The dissolution rate of CaO was measured in CaO ??? 42 wt% Al2O3 ??? 8% SiO2 based slag
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19

Lin, Zuohua Joseph. "The modelling of emulsification, slag foaming and alloy addition behaviour in intensively stirred metallurgical reactors." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ30324.pdf.

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20

Chen, Shengqi. "Phase equilibria in MgO-containing ferro-nickel smelting slags /." [St. Lucia, Qld.], 2005. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18402.pdf.

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21

Puthucode, Rahul. "Neutralization of acidic wastewaters with the use of landfilled Electric Arc Furnace (EAF) high-alloyed stainless-steel slag : An upscale trial of the NEUTRALSYRA project." Thesis, KTH, Materialvetenskap, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-258901.

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The landfilling of slag obtained from the high alloyed Electric Arc Furnace (EAF) steel making process, constitutes an environmental treat for society as well as an economical problem for the companies producing it, due to the costs related to waste management practices. Conventional methods of slag recycling are abundantly used among the steelmaking business, but due to their particular physical properties, high- alloyed EAF slags cannot be properly valorized. Moreover, the pickling process that high-alloyed EAF steels undergo to, generates acidic wastewaters, that need to be collected and ne
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22

Larsson, Jesper. "Acid neutralization using steel slags : Adsorption of fluorides in solutions using AOD slags." Thesis, KTH, Materialvetenskap, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-171235.

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Surface treatment processes of stainless steel, such as pickling, produces acidic waste water consisting of Na⁺, Cl⁻, F⁻, NO⁻3, SO42-, PO43-, Fe3+, Cr6+ and Ni2+. At Sandvik ABs steel works in Sandviken, this waste water is treated and neutralized using slaked lime before being released into the lake Storsjön. The aim of this report was to make a literary review of previous work in using slag as a neutralizing agent for acidic waste water. Furthermore, to see if it’s possible to replace some or all of the slaked lime in the neutralization process with slag and to study what slag that might be
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23

Aydemir, Onur. "Use Of Aluminium Dross For Slag Treatment In Secondary Steelmaking To Decrease Amount Of Reducible Oxides In Ladle Furnace." Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/12608132/index.pdf.

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In this study it was aimed to analyse refining processes such as decreasing reducible oxide content of ladle slag with affecting parameters in low carbon aluminum killed grades and for the research Erdemir low carbon steel grades 7112K and 7110K are selected. There was a negative correlation between reducible oxide amount in ladle slag and desulphurization capacity of ladle slag with metal-slag reaction and steel internal cleanliness. To refine these properties of slag, aluminium dross, which was aluminium production discard and has a metallic content around %30-35 was used and after ladle tre
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24

Welander, Henrik, and Martin Palm. "Dephosphorisation of Acidic Wastewater : Aimed to allow the recirculation of byproducts as slag builders." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-231818.

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This study was conducted to evaluate if Polonite® could remove Phosphorus from Sandvik’s wastewater that naturally forms during steelmaking, and hence be proficiently used as a precursor of the neutralization process of said steel plant. Currently lime (CaO) is mixed with the wastewater which creates clean water and sediments, that later need to be landfilled. Due to the high Phosphorus content in the sediments these cannot be recycled back into the production, this result in a loss of important elements. The aim is therefore to remove the Phosphorus to a target level of 1-2 [mg/L]. In fact, t
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25

Haglund, Teodor, and Joar Huss. "The Viability of Oxygen Gasblowing as a Foaming Slagsuppression System for Slopping Prevention in BOF-Processes." Thesis, KTH, Materialvetenskap, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-199700.

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Slopping in BOS-processes poses many problems, most significantly to work environmentand process effectiveness. Due to the current weaknesses in slopping prediction systems afoaming slag suppression system with immediate effect is needed to prevent slopping.This project aims primarily to be a proof of concept for pressurized oxygen gas blowing as amean of foam steady-state height suppression to prevent slopping and secondarily toappreciate the viability of this concept economically.Five nozzles were designed and used to blow pressurized air onto foam made of silicon oil, atdifferent air flows.
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26

Rusen, Aydin. "Usage Of Boron Compounds In Copper Production." Phd thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615560/index.pdf.

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Copper losses to slag are generally between 0.7-2.3% during the copper matte smelting stage. In this study, the aim was to reduce these losses in the slag phase. For this purpose, usage of some additives (especially calcined colemanite labeled as CC, boric oxide-B2O3 and calcium oxide-CaO as well) as flux material was investigated. The flash furnace matte-slag (FFM-FFS) obtained from Eti Copper Inc. and a master matte-slag (MM-MS) produced synthetically were used as starting materials. Additives were tested in various amounts under two different atmospheres (N2 and low Po2 obtained by mixture
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27

Wang, Huijun. "A Study on the Reaction between MgO Based Refractories and Slag-Towards the Development of Carbon-free Lining Material." Doctoral thesis, KTH, Mikro-modellering, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-214420.

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In present thesis, the fundamental studies on the reaction between MgO based refractories and slag were undertaken for the development of a carbon-free bonding MgO lining material. Alumina was selected as a potential binder material. Due to MgO-Al2O3 chemical reaction, the developed refractory was bonded by MgO·Al2O3 spinel phase. To begin with, an investigation of the dissolution process of dense MgO and MgO·Al2O3 spinel in liquid slag was carried out. To obtain reliable information for dissolution study, a new experimental method was therefore developed. In this method, a cylinder was rotati
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28

Changizi, Ahmad. "Production And Properties Of In-situ Aluminum Titanum Diboride Composites Formed By Slag-metal Reaction Method." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12605914/index.pdf.

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In this study, production and properties of titanium diboride particle reinforced aluminum matrix composite were investigated. TiB2 particles form in-situ through the reaction of TiO2 and H3BO3 and Na3AlF6 in aluminum melt. The results showed that the in-situ TiB2 particles formed were spherical in shape and had an average diameter of 1mm .Moreover, the distribution of TiB2 particles in the matrix were uniform. The ultimate tensile strength, yield strength, flexural stress and hardness were found to while reduction in area and elongation were found to decrease with increase in reinforceme
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29

Ben-Yosef, Erez. "Technology and society some insights on the development of metallurgy in the Southern Levant in the light of new dates of slag deposits /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2008. http://wwwlib.umi.com/cr/ucsd/fullcit?p1453669.

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Thesis (M.A.)--University of California, San Diego, 2008.<br>Title from first page of PDF file (viewed July 25, 2008). Available via ProQuest Digital Dissertations. Includes bibliographical references (p. 54-62).
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30

Ataman, Nihat. "Utilization Of Industrial Wastes Of Turkey As Abrasive In Surface Preparation Technologies." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606911/index.pdf.

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Surface preparation is the key factor in determining the success of a protective coating system and its ultimate objective is to create proper adhesion of a coating over an underlying substrate. Abrasive blast cleaning involves mechanical cleaning by the continuous impact of abrasive particles at high velocities on to the substrate in a jet stream of compressed air. Industries that use abrasive blasting include the shipbuilding industry, automotive industry, and other industries that involve surface preparation and painting. Materials from different origins can be used as a blasting media incl
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31

Mai, Paolo. "Effect of iron redox state on crystallization behaviour of Fayalite slags." Thesis, KTH, Materialvetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-286327.

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In the copper smelting processes, the viscosity of the matte and the slag is an important factor for establishing efficiency. Impurities in the concentrates affect the viscosity not only by changing the melt structure but also by promoting precipitation of solid phase which sharply rises it. In this master thesis, a comprehensive methodology was established to study the MgO effects on the properties of a copper smelting slag. Thus, glassy samples were obtained and after confirmation of the composition and the glassy structure with EDS, SEM, and XRD analysis, they were examined through Ramanspe
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32

Bothma, Jan Andries. "Heat transfer through mould flux with titanium oxide additions." Diss., Pretoria : [s.n.], 2006. http://upetd.up.ac.za/thesis/available/etd-10182007-161313/.

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33

Du, Plessis John. "Control of diffusible weld metal hydrogen through arc chemistry modifications." Diss., Pretoria : [s.n.], 2006. http://upetd.up.ac.za/thesis/available/etd-05152007-131110.

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34

Nilsson, Hultén Leo. "Nitrogen Without Oxygen : The effect of ferroalloys added after vacuum treatment on cleanliness of nitrogen-alloyed tool steel." Thesis, KTH, Materialvetenskap, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-298093.

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Nitrogen-alloyed tool steel is made at Uddeholms AB by adding high-nitrogen ferroalloy after vacuum degassing where introduced impurities are hard to remove. In this thesis two types of high-nitrogen ferrochromium are compared, a solid version and a powder cored wire. They are examined in crossection and 16 samples from four charges are examined with Pulse Distribution Analysis as well as systematic microscopy of polished cross sections. The PDA results missed smaller spinel inclusions shown in previous research to be detrimental. The wire form shows promise but more charges need to be evaluat
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35

Engström, Fredrik. "Mineralogical influence of different cooling conditions on leaching behaviour of steelmaking slags." Licentiate thesis, Luleå tekniska universitet, Industriell miljö- och processteknik, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-26246.

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The Swedish steelmaking industry produces large amounts of by-products. In 2006, the total amount of slag produced reached approximately 1 375 000 metric tons, of which 30% was deposited. Due to its strength, durability and chemistry, steel slag is of interest in the field of construction due to it's similarities with ordinary ballast stone. However, some steel slags face an array of quality concerns that might hinder their use. These concerns generally involve the following physical and chemical properties: Volume expansion, Disintegration, Leaching of metals By controlling and modifying proc
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Santos, Carlos Lacy. "Materiais corretivos da acidez do solo no desenvolvimento inicial e nutrição da cultura da mamona." Universidade Federal do Espírito Santo, 2010. http://repositorio.ufes.br/handle/10/6632.

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Made available in DSpace on 2016-12-23T14:37:42Z (GMT). No. of bitstreams: 1 Carlos Lacy Santos.pdf: 610209 bytes, checksum: 3345388b917bb47a5a2901cd23eb9383 (MD5) Previous issue date: 2010-12-17<br>Este trabalho objetivou avaliar o uso de diferentes materiais corretivos de acidez do solo no desenvolvimento inicial e nutrição mineral da mamona em condição de casa de vegetação. O experimento foi montado num esquema fatorial 2x6, sendo dois Latossolos (LVA I e LVA II), e cinco materiais corretivos de acidez do solo (calcário, resíduo de mármore, escória de metalurgia, produto proveniente de al
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Myckelberg, Pontus. "Förhindra sönderfall av AOD-slagg under svalning genom förändrad sammansättning." Thesis, Luleå tekniska universitet, Industriell miljö- och processteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-70893.

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AOD-slag at Sandvik Materials Technology in Sandviken is disintegrating to a fine powder during cooling as a consequence of a volume increase caused by a phase transformation. The slag becomes a powder that's hard to handle because of dusting, the environment that is closeby take a beating. On top of that the slag must be landfilled and cannot be used as secondary material. In general most slags have a great potential to be used in as construction material in different applications around the society after used by the steel industry. In Sandviks case the disintegration stops that from being po
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Pinto, Samuel Santos de Souza. "Caracterização das propriedades físicas e mecânicas de diferentes tipos de rejeito para aplicação em pavimentos." Universidade Federal de Viçosa, 2013. http://locus.ufv.br/handle/123456789/3831.

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Made available in DSpace on 2015-03-26T13:28:33Z (GMT). No. of bitstreams: 1 texto completo.pdf: 4018410 bytes, checksum: feed045553b762ef8c1ac9447d0f42b0 (MD5) Previous issue date: 2013-03-21<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>This research work was aimed towards the geotechnical characterization of samples from iron ore rejects coming from flotation and magnetic separation processes, together with the addition of LD steel slag, in order to use these materials as components for base of paved roads. In order to reach such goal, this research work was also conce
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Engström, Fredrik. "Mineralogical influence on leaching behaviour of steelmaking slags : a laboratory investigation." Doctoral thesis, Luleå tekniska universitet, Industriell miljö- och processteknik, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-26653.

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The Swedish steelmaking industry produces large amounts of by-products. In 2008, the total amount of slag produced reached approximately 1,300,000 metric tons, of which 20% was deposited. Due to its strength, durability and chemistry, steel slag is of interest in the field of construction, since it has similar or better qualities than ordinary ballast stone, which makes it a competitive construction material. However, some steel slags face an array of quality concerns that might hinder their use. These concerns generally involve the following physical and chemical properties:Volume expansion D
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Földhazy, Johan. "Syntetiska Slaggbildare för Rostfritt Stål." Thesis, KTH, Materialvetenskap, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-210894.

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Currently, at Sandvik Materials Technology, slag from the AOD is primarily utilized in ladle treatment of steel. This project has evaluated three synthetic slag formers for ladle treatment. The evaluation has been conducted by measuring how the total oxygen contents and amount of non-metallic inclusions change when using the three syntethic slag formers. The result from these measurements has then been compared to how the total oxygen content and amount of non-metallic inclusions change when using the slag from the AOD. The amount of slag in the ladle has, furthermore, been measured in two way
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Brüggmann, Christian. "Ein Beitrag zur Verschlackung von MgO in sekundärmetallurgischen Schlacken." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2012. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-84295.

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Die vorliegende Arbeit behandelt Aspekte der Verschlackung von MgO in sekundärmetall-urgischen Schlacken. Mittels FactSage© wird eine Berechnung der Löslichkeit von MgO in Kalksilikat- und Kalkaluminatschlacke bei 1600, 1650 und 1700°C durchgeführt. Die Ergebnisse werden leicht handhab- und ablesbar dargestellt. Die Verschlackung eines porösen MgO-Probekörpers in einer an MgO ungesättigten und an MgO gesättigten Kalkaluminat-schlacke wird bei 1600°C thermogravimetrisch verfolgt. Der Verschlackungsvorgang wird maßgeblich durch die Mechanismen der Teilchendesintegration und Ostwald-Reifung in de
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Borode, J. O. "Dephosphorization of molten pig iron at 1400deg.C using soda slags." Thesis, University of Strathclyde, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372115.

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Barnes, J. S. "Gas injection into viscous liquids and slags by submerged vertical lance." Thesis, University of Newcastle Upon Tyne, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.315593.

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Timoshkin, Igor. "Electrical disintegration of ores and slags and liberation of valuable inclusions." Thesis, Imperial College London, 2001. http://hdl.handle.net/10044/1/8626.

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Zhang, Dayue. "Characterisation and modelling of segregation in continuously cast steel slab." Thesis, University of Birmingham, 2015. http://etheses.bham.ac.uk//id/eprint/6256/.

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The microsegregation of alloying elements (Mn, Si and Ni) in as-continuously cast steel slabs were characterised by scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDS). The segregation profiles were obtained by cumulative profiles method using weighted interval rank sort (WJRS) and single element sort (SES) schemes. Analytical approaches (Ciyne-Kurz and Scheil), Thermo-Calc (thermodynamic) and DICTRA (considering the cross-effect of different elements) were used to predict the segregation behaviour of each steel slab. The segregation profiles predicted by DICTRA agree w
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Axelsson, Fredrik. "Stabilisering av Aluminiumreducerad AOD-slagg." Thesis, Luleå tekniska universitet, Industriell miljö- och processteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-74211.

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Slagg har historiskt använts som konstruktionsmaterial i olika applikationer. Alla typer av slagg passar inte på grund av otillräckliga egenskaper. Vid produktion av höglegerat rostfritt stål så är slaggen mycket kalkrik, vilket leder till sönderfall på grund av absorption av vatten. Vissa stålsorter hos Sandvik tillverkas med ett tvåslaggsförfarande där en första reduceringsslagg först används för att sedan ersättas av en raffineringsslagg. Denna rapport behandlar förändringar i slaggsammansättning för att förbättra slaggens egenskaper gällande volymstabilitet efter d
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Seyedein, Seyed Hossein. "Three-dimensional modeling of various slab and thin-strip twin-roll casting processes." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ37023.pdf.

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Keskinkilic, Ender. "Examination Of Desulfurization Behaviour Of Ladle Furnace Slags Of A Low-sulfur Steel." Phd thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/12608978/index.pdf.

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The aim of this research was mainly to investigate desulfurization behaviour of ladle furnace slags of a low-sulfur steel. First, the change of the amount of unstable oxides (FetO and MnO) in slags was studied from the converter till the end of ladle furnace treatment for different steel quality groups. It was found that the change in the amount of unstable oxides could be examined best with low-C steel qualities. Then, the change of activity of iron oxide was investigated for a member of low-C steel quality group, namely 4937K, a low-S steel. The relation between the degree of desulfurization
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Hemrick, James Gordan. "Release characteristics of 17-4PH stainless steel metal injection molding in SLA epoxy molds." Thesis, Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/19646.

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Goy, Julie. "La métallurgie du cuivre à l'âge du Fer en péninsule d'Oman : organisations et caractéristiques techniques." Thesis, Paris 1, 2019. http://www.theses.fr/2019PA01H063.

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La péninsule d’Oman est une entité géo-culturelle qui s’organise autour des montagnes d’al-Hajjar, extrêmement riches en minerais de cuivre. Ce dernier a probablement été exploité dès la période Hafit (3000 - 2500 av.n.è.) et le métal produit deviendra une matière d’échange avec la Mésopotamie à la période Umm an-Nar (2500 - 1900 av.n.è.). À l’âge du Fer (1350 - 300 av.n.è.), ces échanges deviennent plus flous, mais la production de cuivre elle, ne diminue pas. Les sites de réduction et de travail du métal de la péninsule d’Oman sont extrêmement massifs et fonctionnent à l’aide d’une gestion e
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