Effect of FeO on Sintering and Leaching of Calcium Aluminates in the CaO-Al2O3-SiO2 System
The sintering characteristic and leaching property of calcium aluminates in the CaO-Al2O3-SiO2 system with different FeO additions were investigated.FeO decreases the melting temperature of clinker,and makes the clinker not self-pulverizable.As FeO addition increases from 0 to 4%,the main phases of clinkers sintering at 1350 ℃ are 12CaO·7Al2O3 and 2CaO·SiO2 as well as some CaOoAl2O3 when the mass ratio of Al2O3 to SiO2 is 5.0 and the molar ratio of CaO to Al2O3 is 1.4.The interplanar spacing of 12CaO·7Al2O3 in the clinker increases with the increase of FeO addition,and the proportion of CaO·Al2O3 in the clinker decreases with the increase of FeO addition.FeO does not affect the Al2O3 leaching rate of clinker obviously,but increases the molar ratio of caustic Na2O to Al2O3 in the leached liquor.
CaO-Al2O3-SiO2 system FeO Sintering Leaching Calcium aluminates
Xiaolin Pan Haiyan Yu Kaiwei Dong Bo Wang Wu Zhang Shiwen Bi
School of Materials and Metallurgy, Northeastern University, Shenyang, 110004, China
国际会议
昆明
英文
1014-1017
2012-10-12（万方平台首次上网日期，不代表论文的发表时间）