Sintering studies of magnesia-chromite refractory
The magnesia-chromite refractory composites are the best candidates for the lining of non-ferrous metal smelting and refining furnaces due to their high melting temperature chemical inertness and excellent thermal shock resistance. However their high sintering temperatures (>1700°C) increase the processing complexity and costs. In this investigation the primary goal was to study the
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Sintering studies of magnesia-chromite refractory
The magnesia-chromite refractory composites are the best candidates for the lining of non-ferrous metal smelting and refining furnaces due to their high melting temperature chemical inertness and excellent thermal shock resistance. However their high sintering temperatures (>1700°C) increase the processing complexity and costs. In this investigation the primary goal was to study the
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RHI Bulletin > The Journal of Refractory Innovations
· DIDURITAL A98 Most feeder channel material is based on zirconia mullite or tabular alumina 3 . While zirconia mullite has a high corrosion resistance a disadvantage is the risk of glass defects like scratches due to ZrO2 being corroded out of the channel. Therefore high-alumina materials are used for the production of high-quality glass.
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Directors Report of Carborundum Universal Ltd. Company
Refractory is a material that retains its shape and chemical identity when subjected to high temperatures upto 2000 degrees Celsius and is used in applications that require extreme resistance to
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(PDF) HARBISON-WALKER Handbook of Refractory Practice
HARBISON-WALKER Handbook of Refractory Practice Harbison-Walker Refractories Company 400 Fairway Drive Moon Township PA 15108
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Refractory Solutions for Aluminium
· Refractory Services as part of the Capital Refractories Ltd group is here to offer full turnkey solutions for furnace refractory installations. Whatever the job and whatever the location or installation we have a team of experts on hand 24/7 to make sure
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Black Drossan overview ScienceDirect Topics
High alumina refractory brick Li et al. (2014) Non metallic product and black dross Used as substitutions of aggregates or additives for manufacturing concrete Concrete blocks Shinzato and Hypolito (2005) Non metallic product Green aggregates produced by ball milling with high carbonate clay sintering at 1270 °CLightweight expanded clay
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(PDF) HARBISON-WALKER Handbook of Refractory Practice
HARBISON-WALKER Handbook of Refractory Practice Harbison-Walker Refractories Company 400 Fairway Drive Moon Township PA 15108
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Glossary of Refractory Terms starting with alphabet A
· A refractory composition of finely ground containing chemical agents that ensure hardening at room temperature. These are marketed in either dry or wet condition which however may require tempering with water to attain the desired consistency and which is suitable for laying refractory brick and bonding them strongly upon drying and upon subsequent heating at furnace temperatures.
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ALUMINIUM INDUSTRYAlfran
The aluminium industry uses dosing furnaces for holding molten aluminium between production areas. alfran® recommends the use of non wetting products with high resistance to abrasion particularly for the lining below the bath line. These are high alumina castables which can generally be applied by vibrocasting or gunning system. Holding furnace
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Mechanochemically synthesized high alumina cement and
· High alumina cements (HACs) or calcium aluminate cements (CACs) are the only options as a refractory cements due to their high refractoriness and are most suitable for high temperature applications . Their hydraulic strength development is due to water bonding reactions of the calcium aluminates to form a water-resistant hydrated phases.
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Handbook of Refractory Practice Harbison Walker 2005
· High-Alumina Castables High-alumina castables typically consist of accurately sized high-alumina aggregates with low iron refractory cements. This mixture provides good all-purpose castables with service temperature limits of 3000F (1650C). Upgraded high-alumina conventional castables based on low alkali high. purity alumina-silica aggregate and
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FURNACE ENGINEERING
· Conventional castables low cement castables insulating castables etc. Precast and pre-fired blocks for Reheating furnace hearth top applications. Precast and pre-fired primary and secondary burner blocks and other shapes. Ceramic fibre blankets modules paper and boards. Refractory and insulating mortars in various grades.
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Study of Al2O3-MgO Refractory Castables Corrosion by Secondary Metallurgy Steel Ladle Slags. Bouchetou M.L. / Prigent Slag and Molten Steel Attack Resistance of High Alumina Refractory Castables with Spinel Periclase and Dolomite Additions On the removal of steel fiber reinforced refractory concrete from thin walled steel structures
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Solid State Phenomena Vol. 281 p. 5 Scientific.Net
Abstract Micro-sized alumina powder is widely used in low cement high-alumina refractory castables. The hydration of calcium aluminate cement can be affected by adding micro-sized alumina powder. This work addresses the hydration of a commercial cement at 25°C with 50 wt micro-sized alumina powder added. The hydration heat was measured by
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· The presence of such in-situ formed phase had given interlocking in castables and reinforced the matrix confirming the high strength and refractory properties of castables. The photos show a very compact and dense microstructure in which the octahedral crystals of magnesium aluminate and magnesium chromite spinels are directly bonded either together or with rounded magnesia crystals.
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Handbook of Refractory Practice Harbison Walker 2005
· High-Alumina Castables High-alumina castables typically consist of accurately sized high-alumina aggregates with low iron refractory cements. This mixture provides good all-purpose castables with service temperature limits of 3000F (1650C). Upgraded high-alumina conventional castables based on low alkali high. purity alumina-silica aggregate and
Get Price
Sintering studies of magnesia-chromite refractory
The magnesia-chromite refractory composites are the best candidates for the lining of non-ferrous metal smelting and refining furnaces due to their high melting temperature chemical inertness and excellent thermal shock resistance. However their high sintering temperatures (>1700°C) increase the processing complexity and costs. In this investigation the primary goal was to study the
Get Price
Sintering studies of magnesia-chromite refractory
The magnesia-chromite refractory composites are the best candidates for the lining of non-ferrous metal smelting and refining furnaces due to their high melting temperature chemical inertness and excellent thermal shock resistance. However their high sintering temperatures (>1700°C) increase the processing complexity and costs. In this investigation the primary goal was to study the
Get Price
RHI Bulletin > The Journal of Refractory Innovations
· DIDURITAL A98 Most feeder channel material is based on zirconia mullite or tabular alumina 3 . While zirconia mullite has a high corrosion resistance a disadvantage is the risk of glass defects like scratches due to ZrO2 being corroded out of the channel. Therefore high-alumina materials are used for the production of high-quality glass.
Get Price
Auto-combustion processed high alumina cement and its
· Combusted aluminium nitrate calcium nitrate and urea complexes leads to formation of high alumina cement at temperature as low as 800 °C. The prime cementing phases observed were CA CA 2 and C 12 A 7. The second stage of work evaluates the role of this high alumina cement (HAC) on bauxite based low cement castables.
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Rare-Earth Oxide-Doped Magnesium Aluminate Spinelan
· Abstract Magnesium aluminate spinel (MAS) is an important refractory material known for its high refractoriness high thermal shock resistance high-temperature mechanical and thermal properties high resistance to chemical attack superior hydration resistance etc. MAS has been employed to replace traditional chromite-based refractories in cement rotary kilns and steel ladles because
Get PriceGlossary of Refractory Terms starting with alphabet A
· A refractory composition of finely ground containing chemical agents that ensure hardening at room temperature. These are marketed in either dry or wet condition which however may require tempering with water to attain the desired consistency and which is suitable for laying refractory brick and bonding them strongly upon drying and upon subsequent heating at furnace temperatures.
Get Price
(PDF) HARBISON-WALKER Handbook of Refractory Practice
HARBISON-WALKER Handbook of Refractory Practice Harbison-Walker Refractories Company 400 Fairway Drive Moon Township PA 15108
Get PriceB4C mineralizing role for mullite generation in Al2O3-SiO2
· Based on refractory end-users requirements continuous efforts have been made to design engineered products able to withstand high temperatures (800–1500 °C) and severe thermal gradients.One alternative to enhance the mechanical properties of alumina-based compositions consists of inducing in situ generation of phases with platelet or acicular shape within their matrix fraction
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Firebricksheavy dense fire clay bricks
· About the heavy dense heat resistant firebricks standard size or other firebrick products of different shapes. There are two types of firebricks where each is produced from fire clay. This page deals with the heavy fire brick kind which absorbs the heat into its mass very well. Firebricks have an excellent thermal conductivity plus heat withstanding properties under prolonged use and diamond
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Installation of laser lining thickness measurement for
Study of Al2O3-MgO Refractory Castables Corrosion by Secondary Metallurgy Steel Ladle Slags. Bouchetou M.L. / Prigent Slag and Molten Steel Attack Resistance of High Alumina Refractory Castables with Spinel Periclase and Dolomite Additions On the removal of steel fiber reinforced refractory concrete from thin walled steel structures
Get PriceSolid State Phenomena Vol. 281 p. 5 Scientific.Net
Abstract Micro-sized alumina powder is widely used in low cement high-alumina refractory castables. The hydration of calcium aluminate cement can be affected by adding micro-sized alumina powder. This work addresses the hydration of a commercial cement at 25°C with 50 wt micro-sized alumina powder added. The hydration heat was measured by
Get Price
