提高重质纯碱粒度和白度的实验研究

根据固相水合法生产重质纯碱的特点，结合生产过程影响产品质量的主要因素，研究了碱水质量比、在化合水中添加不同添加剂等因素对产品白度和粒度的影响。结果表明:在碱水质量比为1 ∶0.45条件下，添加氯化镁质量浓度为30~60 mg/L，或者添加氯化钙质量浓度为40 mg/L，或者添加氯化镁和氯化钙混合质量浓度为50 mg/L，或者铁、镁混合时铁质量分数为0.000 8%、氯化镁质量浓度为40 mg/L，所得重质纯碱粒度、白度较好。

Experimental research on improvement of particle size and white content of dense soda ash

According to the features of dense soda ash produced through solid phase hydration process,combining with the main factors affecting product quality in production,the influences of mass ratio of soda to water and different additives on product′s white content and particle size etc.were studied.Results showed that the particle size and white content of dense soda ash were better when the mass ratio of soda to water was 1 ∶0.45,the mass concentration of MgCl2 additive was 30～60 mg/L,or the mass concentration of CaCl2 was 40 mg/L,or the mixed mass concentration of MgCl2 and CaCl2 was 50 mg/L,or the mass fraction of iron was 0.000 8% and the mass concentraion of MgCl2 was 40 mg/L while the iron mixing with magnesium.