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Tesi sul tema "Refractory materials"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 25 luglio 2025

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1

Akpan, Edem T. Gogot︠s︡i I︠U︡ G. "Viscoelastic toughening of refractory ceramics /." Philadelphia, Pa. : Drexel University, 2004. http://dspace.library.drexel.edu/handle/1860/284.

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2

Pandhari, Abhijit. "Modeling of thermal stress cycling in refractory materials." Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/62359.

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In metallurgical reactors, the thermal stress field of refractories always changes with the heat transfer conditions at the hot-face. It is suggested that ‘thermally induced refractory cracking’ is often the primary cause of in-service refractory failure but quantitative support for this is lacking. The current work is focussed on studying this aspect by developing an experimentally validated thermomechanical model that considers refractory strength degradation under repeated thermal cycling. A thermo-mechanical model has been developed with ABAQUS to predict thermal stress and damage in a re

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3

Davis, Robert Bruce. "Design and development of advanced castable refractory materials /." Full text open access at:, 2001. http://content.ohsu.edu/u?/etd,187.

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4

Angara, Raghavendra Phani Krishna. "Recovery of materials from recycling of spent furnace linings." Diss., Rolla, Mo. : Missouri University of Science and Technology, 2008. http://scholarsmine.mst.edu/thesis/pdf/Angara_Raghavendra_09007dcc80575b94.pdf.

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Thesis (M.S.)--Missouri University of Science and Technology, 2008.<br>Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed November 4, 2008) Includes bibliographical references (p. 69-71).

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5

Mouiya, Mossaab. "Thermomechanical properties of refractory materials, influence of the diffuse microcracking." Electronic Thesis or Diss., Limoges, 2024. http://www.theses.fr/2024LIMO0066.

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Les matériaux réfractaires sont largement utilisés dans les applications à haute température mais ne sont pas toujours enclins à résister aux chocs thermiques sévères. Pour résoudre ce problème, une microstructure incorporant des microfissures préexistantes est une solution bien connue pour améliorer la résistance aux chocs thermiques. Néanmoins, une telle microstructure endommagée nécessite une meilleure compréhension pour optimiser son design sans compromettre l'intégrité du matériau. Dans un tel contexte, le Titanate d'Aluminium (Al₂TiO₅, AT) présentant une forte anisotropie de dilatation t

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6

Martin, Rachel (Rachel M. ). "Mechanical testing of rapid-prototyping refractory ceramic print media." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/86278.

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Thesis: S.B., Massachusetts Institute of Technology, Department of Materials Science and Engineering, February 2013.<br>Page 30 blank. Cataloged from PDF version of thesis.<br>Includes bibliographical references.<br>Additively manufactured (3D-printed) refractory alumina-silica ceramics were mechanically tested to ascertain their ultimate tensile strengths and observed to determine their dimensional consistency over the printing and post-printing process. The equipment used to perform tensile testing was designed and built for use with custom-designed tensile test samples. Two ceramic powders,

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7

Bullard, Daniel Edward. "Processing of refractory oxides in a nonequilibrium plasma." Diss., The University of Arizona, 1993. http://hdl.handle.net/10150/186440.

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This investigation focuses on the uses of non-equilibrium plasmas to enhance the chemical reactions used in metallurgical process chemistry. The main emphasis of this work was the reduction of TiO₂ and FeTiO₃ in a hydrogen plasma. The plasma was maintained in a single resonant cavity using microwave energy (2.45 GHz). The reaction was monitored for volatile species by a quadrupole mass spectrometer. The extent of reaction during hydrogen reduction experiments was performed using an external standard X-ray diffraction technique. The effect of process variables (absorbed power, chamber pressure,

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8

Gentile, Maria. "Alkali attack of coal gasifier refractory lining." Thesis, Virginia Tech, 1987. http://hdl.handle.net/10919/45668.

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<p>An experimental test system was designed to simulate the operating conditions found in nonslagging coal gasifiers. The reaction products that form when refractory linings in coal gasifiers are exposed to alkali impurities (sodium or potassium) were experimentally determined. Analysis of selected physical and chemical properties of the reaction products, which typically form between the alkali and the refractory will lead to a better understanding of the mechanisms behind refractory failures associated with alkali attack.</p> <p>The reaction products sodium aluminate (Na₂O⋅Al₂O₃),

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9

Sobrosa, Fabiano Zanini. "Desenvolvimento de materiais cerâmicos refratários com adição da sílica residual proveniente da queima da casca de arroz." Universidade Federal do Pampa, 2014. http://dspace.unipampa.edu.br:8080/xmlui/handle/riu/767.

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Submitted by Cátia Araújo (catia.araujo@unipampa.edu.br) on 2017-01-25T12:34:29Z No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Desenvolvimento de materiais cerâmicos refratários com adição da sílica residual proveniente da queima da casca de arroz.pdf: 10705111 bytes, checksum: f3dc853aa0f1b672236697852c098384 (MD5)<br>Approved for entry into archive by Cátia Araújo (catia.araujo@unipampa.edu.br) on 2017-01-25T12:37:45Z (GMT) No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Desenvolvimento de ma

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10

Palin, Francis Terence. "Engineering data of refractory materials and their significance in real structures." Thesis, Staffordshire University, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.254393.

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11

Donald, Jeffrey Richard. "Surface interactions between non-ferrous metallurgical slags and various refractory materials." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ27913.pdf.

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12

Ye, Jianke. "Preparation and characterisation of novel carbon materials for refractory castable applications." Thesis, University of Sheffield, 2014. http://etheses.whiterose.ac.uk/5654/.

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To overcome the difficulty of incorporation of hydrophobic carbon materials into refractory castables, TiC and SiC coatings with much better water-wettability were prepared on carbon particles from metallic powders (Ti or Si) by using a novel low temperature molten salt synthesis technique. The preparation conditions were optimized by varying processing parameters including synthesis temperature, holding time, salt assembly and metal/carbon molar ratios. Homogeneous TiC coatings were prepared on carbon black (CB) particles by firing them with Ti powders in KCl or KCl-LiCl at 750-850 C for 4 h

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13

Pallay, Krista Joy. "Surface Modifications to Mitigate Refractory Degradation in High-Temperature Black Liquor Gasifiers." Thesis, Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/10488.

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Ceria (CeO2), chromia (Cr2O3), yttria-stabilized zirconia (Y2O3-ZrO2), and sodium cerium oxide (Na2CeO3) were used as barrier coatings on Ufala, an alumina-based ceramic refractory, to determine if they were effective at increasing the life of the refractory in a high-temperature black liquor gasification environment. The ceria, chromia, and yttria-stabilized zirconia coatings were applied at atmospheric pressure using a coating applicator at the Institute of Paper Science and Technology at the Georgia Institute of Technology. The sodium cerium oxide coatings in addition to the three other c

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14

Mølnås, Håvard. "Compatibility Study of Carbon-Based Refractory Materials utilized in Silicomanganese Production Furnaces." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for materialteknologi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-16345.

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Tap hole refractories constitute critical parts of the refractory lining in submerged arc furnaces. For several hours every day, molten slag and metal flow through the tap hole calling for thorough selection of refractory materials able to withstand the intense thermal, corrosive and erosive conditions present in this area. Carbon-based refractories have shown excellent thermal properties and high strength, as well as low wettability towards process materials, and are therefore utilized in silicomanganese production furnaces both as side lining, in the hearth, and in the tap hole area. The aim

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15

Brenneman, Chad. "Evaluating Worker Exposure to Hexavalent Chromium in Refractory Materials During Demolition Activities." University of Cincinnati / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1267736529.

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16

Corradetti, Stefano. "Study and development of high release refractory materials for the SPES project." Doctoral thesis, Università degli studi di Padova, 2013. http://hdl.handle.net/11577/3422608.

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Throughout the last century, theoretical and experimental research made by the international nuclear physicists community has led to important advancement in the knowledge of the mechanisms that govern the behavior and stability of the nuclei. The technological improvements necessary to support this research has often opened the way to new applications in other field of science and industry which directly reflects in our common life experience. Nowadays, Europe is becoming more and more a leader in both theoretical and experimental nuclear physics, as testified by the presence on its territo

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17

Bheemineni, Veerabhadrarao. "Gaseous corrosion of magnesium oxide in hydrogen /." The Ohio State University, 1985. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487259125218742.

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18

Steenkamp, J. D. (Joalet Dalene). "Chemical wear of carbon-based refractory materials in a silicomanganese furnace tap-hole." Thesis, University of Pretoria, 2014. http://hdl.handle.net/2263/45951.

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The aim of the study presented here was to investigate the potential for chemical wear of carbon-based refractory materials in a silicomanganese furnace tap-hole. In the study, three research questions were addressed: 1. Is chemical reaction between refractory and slag or refractory and metal a potential wear mechanism? 2. Is the choice in carbon-based refractory material important from a tap-hole refractory life perspective? 3. What are the implications for the life of the tap-hole in a SiMn furnace? To study the potential for chemical wear, thermodynamic calculations were conducted to de

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19

Jansson, Sune. "A study on molten steel/slag/refractory reactions during ladle steel refining." Licentiate thesis, Stockholm, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-312.

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20

Kuhr, Samuel J. "CHARACTERIZATION AND DEFORMATION BEHAVIOR OF MICROSTRUCTURAL GRADIENTS IN THE LOW SOLVUS HIGH REFRACTORY (LSHR) NICKEL BASE SUPERALLOY." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1462629676.

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21

Kuntamalla, Praveen Kumar. "Finite element simulation of creep behavior in enhanced refractory material for glass furnace." Morgantown, W. Va. : [West Virginia University Libraries], 2004. https://etd.wvu.edu/etd/controller.jsp?moduleName=documentdata&jsp%5FetdId=3629.

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Thesis (M.S.)--West Virginia University, 2004.<br>Title from document title page. Document formatted into pages; contains xiv, 78 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 64-66).

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22

Gunter, Mickey E. "Refractometry by total reflection." Diss., Virginia Polytechnic Institute and State University, 1987. http://hdl.handle.net/10919/77798.

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Refractometry is a means to measure the refractive indices of liquids, gases, and dielectric solids, either isotropic or anisotropic, by observation of light refraction or reflection with a microscope, refractometer or other more specialized equipment. For anisotropic solids, refractometry by total reflection (RTR) is by far the simplest, most rapid, and precise method to determine the refractive indices, provided a polished surface of sufficient size exists. Its precision exceeds that for routine oil immersion techniques but compares less favorably to that for minimum deviation methods. Howev

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23

Nowrozi, Mojtaba Faiz. "A systematic study of LPCVD refractory metal/silicide interconnect materials for very large scale integrated circuits." Diss., The University of Arizona, 1988. http://hdl.handle.net/10150/184396.

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Recently, refractory materials have been proposed as a strong alternative to poly-silicon and aluminum alloys as metallization systems for Very Large Scale Integrated (VLSI) circuits because of their improved performance at smaller Integrated Circuit (IC) feature size and higher interconnect current densities. However, processing and reliability problems associated with the use of refractory materials have limited their widespread acceptance. The hot-wall low pressure chemical vapor deposition (LPCVD) of Molybdenum and Tungsten from their respective hexacarbonyl sources has been studied as a p

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24

Aramide, FO, KK Alaneme, PA Olubambi, and JO Borode. "In-Situ Synthesis of Mullite Fibers Reinforced Zircon-Zirconia Refractory Ceramic Composite from Clay Based Materials." International Journal of Materials and Chemistry, 2015. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1001844.

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Abstract Understanding the phase transformations/developments that result due to varying the production parameter of engineering materials is vital to development of new materials. The effects of yttria and niobium oxide on the phase changes and mechanical properties of mullite fiber reinforced zircon-zirconia ceramic composites produced by in-situ sintering of raw materials was investigated. Varied amounts of powder zirconia, yttria and niobium oxide were mixed in a turbula mixer with a fixed composition of clay (70% volume) of known mineralogical composition and mechanically milled in a pla

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25

Aleknevičius, Marius. "The influence of oil cracking catalyst waste on the properties of refractory castables." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2011. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2010~D_20110120_134405-85598.

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Fluidized bed catalytic cracking catalyst waste is a zeolite material. Its unique properties are underused in cementitious materials production technology. Various additives, modifiers used in refractory castables are very expensive, so the use of catalyst waste as a modifying additive of castable properties has not only an ecological (waste recycling) but also an economical basis. Medium cement refractory castable was developed using 70 % and 40 % of aluminium oxide containing aluminate cement and catalyst waste additive, respectively 2,5 % and 5,0 %. The work also reveals an efficient effect

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26

Cockcroft, Steven Lee. "Thermal stress analysis of fused-cast Monofrax-S refractories." Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/30991.

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Mathematical models of heat flow and elastic stress generation based on the finite-element method have been developed and utilized to analyze the Epic-3 Monofrax-S casting process (Monofrax-S is primarily composed of 47-57% A1₂O₃, 34-41% ZrO₂ and 10-15% SiO₂). The results of the mathematical analysis, in conjunction with information obtained from a comprehensive industrial study, has led to the development of mechanisms for the formation of the various crack types found in this casting process. Thermal stresses have been predicted to be generated early in the solidification process in associ

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27

Sandin, Pierre. "Characterization of a refractory cement and sensor development for temperature measurements in molten steel." Thesis, Uppsala universitet, Mikrosystemteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-353490.

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In steel manufacturing, temperature control is a critical parameter,as it is extremely important for the steel quality. In general,disposable sensors are regularly immersed in the melt for temperaturemeasurements. There are commercially available sensors for continuoustemperature measurements. In this study, a refractory cement is used for encapsulation andcarrier of a resistive temperature detector, for continuoustemperature measurements in molten steel. This cement is normallyused for manufacturing of steel melt crucibles. The work in thisstudy is mostly experimental and consist of character

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28

Morel, Bayram Murat. "Investigation Of The Effects Of Temperature On Physical And Mechanical Properties Of Monolithic Refractory Made With Pozzolanic Materials." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/2/12606700/index.pdf.

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In recent years, scientific studies are carried out to find new refractory material. Having good mechanical properties under very high temperatures, refractories are widely used in industries like iron, steel, glass, cement and pottery. Researches are focused on monolithic refractory making because of their superior properties comparing to conventional firebrick refractories. Providing a mono-block body, having no joints makes the monolithic refractories more durable at elevated temperatures. Easier production and installation are two main points that people are choosing monolithic refractorie

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29

Jahn, Constantin [Verfasser], Christos G. [Akademischer Betreuer] Aneziris, Christos G. [Gutachter] Aneziris, and Helge [Gutachter] Jansen. "Calcium zirconate materials for refractory applications / Constantin Jahn ; Gutachter: Christos G. Aneziris, Helge Jansen ; Betreuer: Christos G. Aneziris." Freiberg : Technische Universität Bergakademie Freiberg, 2020. http://d-nb.info/1221140981/34.

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30

Jagtap, Pranav. "A Pre-Assessment related to Refractory Waste Management in Sweden : Pre-study of the performance of MgO-C bricks made from recycled MgO-C refractory materials for use in steel production." Thesis, KTH, Materialvetenskap, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-298064.

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Steel industries consume refractory materials on a large scale. High temperature resistant refractory materials are essential for linings of the steelmaking vessels, to protect them from corrosive environments, high temperatures, molten steels and slags during transportation and steelmaking operations. Furthermore, with the increasing demand in steel production the usage of refractory materials has substantially increased, resulting in an increasing demand for refractory raw materials. However, with the hike in prices and abundancy for raw materials there is a need for recycling and reusing of

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31

Jensen, Jacob K. "Characterization of a High Strength, Refractory High Entropy Alloy, AlMo_0.5NbTa_0.5TiZr." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1492175560975813.

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32

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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33

Svantesson, Jonas. "Development Towards Sustainable Ironmaking : The IronArc Process." Licentiate thesis, KTH, Processer, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-286031.

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The IronArc process is a novel process for a more sustainable production of liquid pig iron using electricity for heating and hydrocarbons for reduction. This thesis aims to facilitate its use by investigating possible refractory solutions and the gas blowing in the process which is done by a plasma generator. The process involves a slag with a high FeO content of 90 wt % and gangue content of approximately 5 wt % SiO2 and 5 wt % CaO. The interaction between such a slag and refractories of MgO, Al2O3, Cr2O3, SiC, ASZ,and C was investigated by high temperature experiments at 1700 K and by therm

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34

Angelici, Avincola Valentina [Verfasser], and H. J. [Akademischer Betreuer] Seifert. "Experimental and numerical investigation of silicon carbide and refractory materials under extreme conditions / Valentina Angelici Avincola. Betreuer: H. J. Seifert." Karlsruhe : KIT-Bibliothek, 2016. http://d-nb.info/1100529446/34.

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35

Rockett, Chris H. "Flexural Testing of Molybdenum-Silicon-Boron Alloys Reacted from Molybdenum, Silicon Nitride, and Boron Nitride." Thesis, Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/16293.

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MoSiB alloys show promise as the next-generation turbine blade material due to their high-temperature strength and oxidation resistance afforded by a protective borosilicate surface layer. Powder processing and reactive synthesis of these alloys has proven to be a viable method and offers several advantages over conventional melt processing routes. Microstructures obtained have well-dispersed intermetallics in a continuous matrix of molybdenum solid-solution (Mo-ss). However, bend testing of pure Mo and Mo-ss samples has shown that, while the powder processing route can produce ductile Mo meta

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36

Kubů, Marek. "Návrh zefektivnění technologie obrábění komínové vložky." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2016. http://www.nusl.cz/ntk/nusl-241905.

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Diploma thesis contains introduction of a company P-D Refractories CZ a. s., where the manufacture of ceramic chimney liners is. Followed by a description and analysis of the product in the entire production cycle, material and product spectrum. Based on the results of current production is created proposal to streamline the machining technology with a view to increase productivity and reduce defective products, which means determine the material of a tool and the method of machining. The work is finished by technical-economic assessment, where the summary and recommendation of the proposed so

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37

Супрун, О. В. "Перспективи використання матеріалів на основі MAX-фаз". Thesis, Сумський державний університет, 2016. http://essuir.sumdu.edu.ua/handle/123456789/47982.

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В останні кілька років зростає інтерес учених до матеріалів на основі безкисневої кераміки – тернарних сполук, або так званих МАХ-фаз. Матеріали на основі шаруватих МАХ фаз або наноламінатна кераміка – новий вид легкооброблюваної конструкційної кераміки, яка потенційно може використовуватися в багатьох галузях техніки, і особливо перспективна при роботі в екстремальних умовах. Вважається, що дана кераміка може знайти широке застосування для виготовлення деталей складної форми, що зазнають термічних, хімічних і механічних впливів [1].

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Jogdand, Surbhi Shivaji. "Some Study related to Refractory Waste Management in Sweden : A move towards a greener and sustainable Swedish steel industry." Thesis, KTH, Materialvetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-286836.

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Decades ago, 1 ton of steel required 80 kg of refractory material. While the scenario has completely changed over the years. Today, 1 ton of steel needs approximately 11 kg of refractory material depending on the steelworks. Refractories are accustomed to high-temperature processes, for example, producing steel, glass, etc. The amount of spent refractories has also increased with the increase in demand for its production. For the manufacturing of refractories, there is a tremendous use of virgin raw materials but with the increase in price and reduci

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Aleknevičius, Marius. "Naftos krekinge naudoto katalizatoriaus poveikis ugniai atsparių betonų savybėms." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2011. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2010~D_20110120_134413-03760.

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Naftos krekinge naudotas katalizatorius yra ceolitinė medžiaga, kurios unikalios savybės mažai išnaudojamos cementinių medžiagų gamybos technologijoje. Ugniai atspariuose betonuose naudojami įvairūs priedai-modifikatoriai yra labai brangūs, todėl naudoto katalizatoriaus panaudojimas, kaip modifikuojančio betono savybes priedo, turi ne tik ekologinį (atliekų utilizavimas) bet ir ekonominį pagrindą. Vykdant šį darbą sukurti vidutinio cemento kiekio ugniai atsparūs šamotbetoniai su 70 % ir 40 % aliuminio oksido turinčiais aliuminatiniais cementais ir naudoto katalizatoriaus priedu atitinkamai 2,5

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40

Albert, Jacques. "Characterizations and design of planar optical waveguides and directional couplers by two-step K+ -Na+ ion-exchange in glass." Thesis, McGill University, 1987. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=75759.

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Planar optical waveguides fabricated by K$ sp+$-Na$ sp+$ ion-exchange in soda-lime glass substrates are investigated.<br>Experimental characterizations of planar waveguide with respect to a wide range of fabrication conditions have been carried out, including detailed measurements of the refractive index anisotropy resulting from the large induced surface stresses.<br>Parallel to this, the non-linear diffusion process of ion-exchange was simulated numerically to provide, along with the results of the characterizations, a complete description of the refractive index profile from any set of fabr

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41

Rodrigues, Marcelo Acacio. "Uma contribuição para o estudo das deformações residuais proporcionadas pelo processo de usinagem por fresamento." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/3/3152/tde-05082009-093850/.

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A operação de fresamento de faceamento tem como objetivo proporcionar superfícies planas isentas de deformação residual na seção transversal da peça usinada. Por outro lado, as evidências apresentadas neste trabalho demonstram que tal deformação existe e seu comportamento pode ser relacionado com grandezas tecnológicas como o tipo de ferramenta utilizada, a velocidade de avanço e de corte do processo além das propriedades mecânicas e metalúrgicas do material da peça.Foram realizados ensaios de fresamento de faceamento, em condições convencionais de usinagem, em duas superligas, sendo uma a bas

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42

Kirabira, John Baptist. "Properties of Ugandan minerals and fireclay refractories." Doctoral thesis, KTH, Materials Science and Engineering, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-225.

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<p>Development of products which can be produced from a country’s natural resources is very important as far as the industrialization of a nation and saving foreign exchange is concerned. Presently, industries in Uganda and the other states in the Lake Victoria region import all refractory-related-consumables, as the demand cannot be met locally. Based on the abundance of ceramic raw materials for high temperature applications in the region and the demand for refractories by industries it is pertinent to develop and manufacture firebricks by exploiting the locally available raw materials.</p><

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43

Luchini, Bruno [Verfasser], Christos G. [Akademischer Betreuer] Aneziris, Christos G. [Gutachter] Aneziris, and Victor C. [Gutachter] Pandolfelli. "Processing and properties of bulk and cellular carbon-bonded refractory materials / Bruno Luchini ; Gutachter: Christos G. Aneziris, Victor C. Pandolfelli ; Betreuer: Christos G. Aneziris." Freiberg : Technische Universität Bergakademie Freiberg, 2019. http://d-nb.info/1220636509/34.

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44

Memarpour, Arashk. "A study on the Submerged Entry Nozzels (SEN) respecting clogging and decarburization." Licentiate thesis, KTH, Tillämpad processmetallurgi, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-25110.

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The submerged entry nozzle (SEN) has been used to transport the molten steel from tundish to the mould. The main purpose of the SEN usage is both to prevent oxygen and nitrogen pick-up by molten steel and to achieve the desired flow condition in the mould. Therefore, the SEN can be considered as a vital factor for a stable casting process and the steel quality. Furthermore, the steelmaking processes occur at high temperatures around 1873 K so the interaction between the refractory materials of the SEN and molten steel is unavoidable. Therefore, the knowledge of the SEN behaviors during pre-hea

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45

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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46

SANTOS, WILSON N. dos. "Contribuicao ao estudo da condutividade termica do material ceramico concreto refratario utilizando a tecnica de fio quente com ajustes por regressao nao linear." reponame:Repositório Institucional do IPEN, 1988. http://repositorio.ipen.br:8080/xmlui/handle/123456789/9901.

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Made available in DSpace on 2014-10-09T12:32:39Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:08:47Z (GMT). No. of bitstreams: 1 01638.pdf: 3040773 bytes, checksum: f18467d3dc509496522489a5bcf98007 (MD5)<br>Tese (Doutoramento)<br>IPEN/T<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP

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47

Friček, Jakub. "Sledování vlivu keramické vazby na vlastnosti izolačních žáromateriálů." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2013. http://www.nusl.cz/ntk/nusl-225890.

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Thermal insulating refractories are an integral part of each thermal unit since they reduce its energy consumption. The current phenomenon of saving in both environmental and financial aspects reflects in searching for such possibilities to produce at lower manufacturing and material costs. One of the possible ways is to valorise waste materials. The theoretical part then deals with the division of refractory materials, classification of thermal insulation refractory materials and manufacturing technologies. The experiment is focused on the production of insulating refractory materials made fr

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48

MACHADO, GLAUSON A. F. "Recobrimentos à base de mulita em refratário de carbeto de silício obtidos a partir de PMSQ [POLI (METILSILSESQUIOXANO)] e alumínio." reponame:Repositório Institucional do IPEN, 2017. http://repositorio.ipen.br:8080/xmlui/handle/123456789/27969.

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Submitted by Marco Antonio Oliveira da Silva (maosilva@ipen.br) on 2017-11-08T16:39:39Z No. of bitstreams: 0<br>Made available in DSpace on 2017-11-08T16:39:39Z (GMT). No. of bitstreams: 0<br>O carbeto de silício (SiC) é um material que apresenta baixa expansão térmica, altas resistências mecânica e ao choque térmico e alta condutividade térmica. Em razão disto é empregado na confecção de mobília de fornos de sinterização. O SiC no entanto sofre degradação a altas temperaturas quando submetido a atmosferas agressivas. A utilização de recobrimentos protetores evita a exposição direta da superfí

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49

Magnusson, Lena. "On the Nucleation and Inoculation of Metals." Doctoral thesis, Stockholm : Royal Institute of Technology, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3893.

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50

Collignon, Brice. "Séchage des bétons réfractaires : expérimentation, modélisation et influence d'un ajout de fibres polymère." Thesis, Vandoeuvre-les-Nancy, INPL, 2009. http://www.theses.fr/2009INPL051N/document.

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Les matériaux réfractaires non façonnés dense (MRNF) prennent une part de plus en plus importante aussi bien en cimenterie, fonderie, sidérurgie, ... Principalement constitués d’agrégats à base d’alumine, de magnésie, de spinelle, … ils constituent des matériaux de faible perméabilité contenant une teneur résiduelle en eau de 4 à 6 %. Leur séchage avant leur première utilisation est une opération critique qui conditionne leur durée de vie. D’une part, mal conduit, il peut du fait des endommagements occasionnés, réduire considérablement la durée de vie des installations. D’autre part, certaines

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