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Rheological Behavior of Zero Cement Al_2O_3-MgO Castables
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作者 JIA Quanli SU Xiaogai +1 位作者 YE Fangbao ZHONG Xiangchong 《China's Refractories》 CAS 2012年第4期7-12,共6页
Al2O3 -MgO castables have been widely used for working linings of steel ladle due to their superior hot strength and corrosion resistance. In this- work, effects of" microsilica, ultrafine alumina and MgO fines addit... Al2O3 -MgO castables have been widely used for working linings of steel ladle due to their superior hot strength and corrosion resistance. In this- work, effects of" microsilica, ultrafine alumina and MgO fines additions on the rh, eological behavior of the castables were investi- gated by means of IBB rheometer V1. 0 to measure torque (shear stress) under varying shear rates. The re- sults show that rheological properties of castables at varying shear rates are significantly improved with increase of microsilica additions (from 1 mass% to 5 mass% ) and corresponding decrease in water addition; there is only little change in rheological behavior with variation of ultrafine alumina and MgO fines additions. Optimum ultrafine alumina and microsilica additions are recommended for castables with good rheological behavior. 展开更多
关键词 theological behavior alumina - magnesia castables microsifica ultrafine alumina magnesia fines
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