硫酸钠对铝酸钠溶液种分过程的影响  

Effect of Na_2SO_4 on seed precipitation process of sodium aluminate solution

作　　者：王熙慧[1] 于海燕[1] 卢东[2] 吴玉胜[3] 杨毅宏[1] 毕诗文[1] 

机构地区：[1]东北大学材料与冶金学院,沈阳110004 [2]中国铝业股份有限公司河南分公司,郑州450041 [3]沈阳工业大学材料科学与工程学院,沈阳110023

出　　处：《材料与冶金学报》2007年第3期184-187,共4页Journal of Materials and Metallurgy

摘　　要：针对我国氧化铝的生产现状，研究了有害物质硫酸钠对铝酸钠溶液分解过程的影响规律．结果表明，分解首温一定的条件下，分解末温升高可消除硫酸钠对分解率的影响，但不利于产物粒度的提高；分解温度制度为68-52℃的条件下，硫酸钠质量浓度为9g／L时分解产物氢氧化铝的强度最好，相比空白其磨损系数降低4．4％．In order to get sandy alumina, a systematic study was conducted for the effect of sodium sulfate impurity on the seed precipitation process from sodium aluminate solution. The results show that, sodium sulfate has a little influence on precipitation rate, and this negative influence can be avoided by increasing the terminal temperature of the precipitation process, but this is not favorable for increasing the grain size of the product, When the precipitation temperature is 68 - 52℃ and the mass concentration of sodium sulfate is 9 g/L, the strength of the Al（OH） 3 product is the best, and its attrition index decreases by 4. 4%.

关 键 词：铝酸钠溶液 种分 氢氧化铝 硫酸钠 

分 类 号：TF803.22[冶金工程—有色金属冶金]