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Shaped Insulating Refractory Products——Determination of Permanent Linear Change on Heating
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《China's Refractories》 CAS 2005年第4期38-40,共3页
1 Scope This standard covers the definition, technical requirement, apparatus, specimen, test procedure, calculation and test report on permanent linear change of shaped insulating refractory products.
关键词 Determination of permanent linear change on Heating Shaped Insulating Refractory Products length
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Effect of Microsilica Addition on Properties of CMA72 Bonded Al2O3-MgO Castables 被引量:2
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作者 GAO Jianying ZHANG Ziyi +1 位作者 BRUNO Touzo CAO Biao 《China's Refractories》 CAS 2016年第2期1-6,共6页
CMA72 bonded Al2 O3 - MgO castable is promising for application of steel ladle wall, because of unique combination of thermo-mechanical properties, slag corro- sion resistance and cost benefit. In these castables, mi-... CMA72 bonded Al2 O3 - MgO castable is promising for application of steel ladle wall, because of unique combination of thermo-mechanical properties, slag corro- sion resistance and cost benefit. In these castables, mi- crosilica can be introduced to counterbalance the expan- sion generated by spinel formation. In this paper, the of microsilica dosage on properties of eastables was evaluated. Expansion, expressed by the permanent linear change (PLC), is highly dependent on the dosage of microsilica. Unexpected expansion occurs when the dos- age of microsilica is too low due to dominant effect of spinel and CA6 formation. Too high dosage results in sintering shrinkage, which is related to amount of liquid phase generated by microsilica addition. In addition, HMOR declines dramatically with increasing microsilica dosage. Considering the balance between expansion con- trol and hot property retention, 1.0 mass% of microsili- ca is recommended for the castable containing 4 mass% of magnesia. 展开更多
关键词 alumina - magnesia castable microsilicadosage permanent linear change CMA72
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