摘要
研究了高温加压条件下用CaO与CaCl2作混合脱杂剂,在偏硅酸钠溶液中脱铝、钛的工艺,实验表明,在温度130～150℃,压力0.8～0.9 MPa,反应时间2.0～2.5 h,CaO用量为3.0～4.0 g.L-1,CaCl2的用量为6.0～7.0 g.L-1时,铝的最高脱除率达97.00%,钛的最高脱除率达98.91%。对脱杂形成的铝钛渣的SEM图片分析,结果显示脱杂所形成的铝钛渣分子成排列紧密,分布均匀,结构稳定。这表明用CaO及CaCl2作混合脱杂剂脱铝、钛是可行的。
The technique of removing aluminum and titanium being removed through putting the mixture of CaO and CaCI2 into sodi- um silicate solution under high temperature and pressure was investigated. The experimental results showed that the removal rates of a- luminum and titanium were respectively up to 97.00% and 98.91% while the temperature, pressure, reaction time, and the consump- tion of CaO and CaCI2 were set respectively as 130 -150 ℃, 0.8 -0.9 MPa, 2.0 -2.5 b, 5.0 -6.0 g·L^-1, 6.0 -7.0 g·L^-1. The SEM pictures of slag that was formatted in the process of aluminum and titanium being removed showed that the slag molecules were closely arranged to chains and the structure of the chains was stable and uniformly distributed, which showed that the technique of re- moving aluminum and titanium by using the removal mixture agent of CaO and CaCl2 was feasible.
出处
《稀有金属》
EI
CAS
CSCD
北大核心
2013年第2期277-282,共6页
Chinese Journal of Rare Metals
基金
云南省科技厅院所转制项目(2009CF011)资助
关键词
偏硅酸钠溶液
加压
铝
钛
sodium silicate solution
pressure
aluminum
titanium
