摘要
以硼酸母液浸溶西藏硼砂矿,对所得硼砂溶液进行酸化,生成硼酸和硝酸钠;控制反应浓度和其他相关工艺条件,使硼酸和硝酸钠同时结晶,再利用二者相对密度的不同,采用重力分离法实现了硼酸与硝酸钠的有效分离。实验证明:硼和钠收率分别达到92.0%和91.5%,产品质量符合国家标准。工艺过程不对硼酸母液进行蒸发。
Boric acid and sodium nitrate were prepared by the leaching of Tibet borax mine with boric acid mother liquor and by the subsequent acidification of the borax solution.By controlling the concentration of the reactants and other related pro- cess conditions ,the crystallization of boric acid and sodium nitrate can be realized simultaneously.By using the property of difference in relative densities, boric acid and sodium nitrate were isolated with gravity separation.Results showed that the yields of boron and sodium were 92.0% and 91.5%, respectively.The product quality conformed to the state standards.Addi- tionally, boric acid mother liquor did not need to be evaporated during the process.
出处
《无机盐工业》
CAS
北大核心
2014年第5期38-41,共4页
Inorganic Chemicals Industry
关键词
硝酸
硼砂矿
硼酸
硝酸钠
nitric acid
borax mine
boric acid
sodium nitrate
