Dispersion and rheology studies on alumina trihydroxide under severe conditions;
苛性条件下纳米氢氧化铝分散和流变研究
Exploration of the way lowering seed liquor caustic ratio;
降低拜耳法种分原液苛性比值的途径探讨
Thus,based on the actual pro-duction in our alumina factory,the causative factors of low seeding decomposition rate are an-alyzed,and in consequence,some effective measures are presented,such as lowering caustic ratio(a k )of refined sodium aluminate liquor feed,lowerin.
本文结合我厂拜耳法种分分解的生产情况,对造成我厂种分分解率低的原因进行分析,提出降低精液苛性比值、采用中间降温制度、添加活性晶种等,是提高我厂种分分解率的有效途径。
Effect of caustic ratio on structure and characteristics of sodium aluminate solution has been studied by methods of infrared and measurement of viscosity.
用红外光谱和粘度测定手段考察了苛性比对铝酸钠溶液结构和性质的影响·发现在中等浓度以上的铝酸钠溶液中,当ρAl2O3不变时,随着苛性比的增加Al O Al峰减弱至消失;Al(OH)-4的峰减弱·温度在70℃以下,铝酸钠溶液的粘度随苛性比增加而大幅度增加,高于70℃增加较小·用铝酸钠溶液中铝酸根阴离子与OH-形成缔合物解释铝酸钠溶液的红外光谱和粘度随苛性比的变化