盐湖尾渣十水碳酸钠中杂质脱除方法的试验研究  

Tests on removing impurities in sodium carbonate decahydrate of tailings in Salt Lake

作　　者：杨兆娟[1] 张宏[1] 李蓓 沈莉 王顺强 

机构地区：[1]青海大学化工学院,青海西宁810016 [2]青海盐湖海虹化工股份有限公司,青海格尔木816000 [3]青海盐湖镁业有限公司,青海格尔木816000

出　　处：《化工矿物与加工》2014年第10期11-13,共3页Industrial Minerals & Processing

基　　金：青海省科技创新能力促进计划项目(2012-G-Y25A-7)

摘　　要：采用重结晶法、氧化还原法对尾渣十水碳酸钠中水合肼、NaCl等进行除杂试验研究,结果表明:重结晶法在适宜的固液比为2.5∶1时,水合肼的除去率达34.1%,NaCl的除去率达52.97%。氧化还原法除杂中次氯酸钠的适宜添加量为0.108g,即为理论量的120%,水合肼的除去率达80%,NaCl的除去率为40.68%;双氧水适宜的添加量为0.024g,水合肼的除去率达66.67%,NaCl的除去率为38.98%。试验为十水碳酸钠综合利用提供了基础数据。Tests were conducted on removing hydrazine hy- drate,sodium chloride and other impurites in sodium carbonate decahydrate of railings by recrystallization and oxidation-reduction. The results show that in recrystallization when appropriate solid-liquid ratio is 2.5 ： 1, hydrazine hydrate removal rate could be up to 34.1% and NaCl removal rate 52.97% In REDOX process, suitable addition amount of sodium hypochlorite is 0. 108 g or 120% of theoretical amount. Removal-rate of hydrazine hy- drate is 80%, and removal rate of sodium chloride 40.68%, suit- able addition amount of hydrogen peroxide 0. 024 g, removal rate of hydrazine hydrate 66. 67%, removal rate of sodium chloride 38.98%. The tests have provided the basic data for the compre-hensive utilization of sodium carbonate decahydrate.

关 键 词：十水碳酸钠 水合肼 重结晶法 氧化还原法 除杂 

分 类 号：TD985[矿业工程—选矿]