摘要
以低品位硼镁矿石为原料,以浮选方式对原矿石中硼镁矿石和硅镁矿石成分进行精选,采用硫酸法生产硼酸,同时对硼酸生产过程中生成的副产物硫酸镁进行收取。对影响硼酸结晶分离的溶液浓度、温度、时间等影响因素进行考察。采用化学滴定法和离子发射光谱法对所得的硼酸和硫酸镁成分进行检测,结果表明:在浓缩液浓度35%、溶液温度10℃、结晶时间24 h条件下,所得硼酸含量为99.21%,收率77.01%。所得镁盐中硫酸镁平均含量为54.38%。
The boric magnesium borate ore and silicon magnesium ore in low grade boric magnesium ore were sifted. Boric acid was produced by sulfuric acid method while the by-product, magnesium sulfate, in the productive process was collected. The factors that affect boric acid crystallization and separation such as solution concentration, temperature and time were investigated. The composition of boric acid and magnesium sulfate obtained was detected by chemical titration method and ion emission spectrometry. The results showed that when the concentrate concentration was 35%, the solution temperature was 10℃, the crystallization time was 24 h, the boric acid content was 99.21% and the yield could reach 77.01%. The average content of magnesium sulfate in the magnesium salts was 54.38%.
作者
白亚婷
兰云鹤
项傲
杜春霖
BAI Ya-ting;LAN Yun-he;XIANG Ao;DU Chun-lin(College of Chemical Engineering,Eastern Liaoning University,Dandong 118003,China)
出处
《辽东学院学报（自然科学版）》
CAS
2018年第4期229-233,237,共6页
Journal of Eastern Liaoning University:Natural Science Edition
基金
辽东学院省级大学生创新创业项目(2018117790038)
关键词
硼镁矿石
硼酸
硫酸镁
硫酸法
NiCoB/TiO2
amorphous alloy catalyst
p-nitrobenzamide
catalytic reduction
作者简介
白亚婷（1997-），女（满族），辽宁省葫芦岛人，研究方向：化学工程与工艺。;通讯作者：杜春霖（1968-），男（满族），辽宁丹东人，高级实验师，研究方向：应用化学。
