盐酸浸取中低品位磷矿过程中回收氟的工艺研究  

Research on comprehensive recovery of fluorine in the process of leaching mid-low grade phosphate ore with hydrochloric acid

作　　者：薛安[1,2,3] 聂登攀[2,3] 王振杰[2,3] 刘安荣[2,3] 朱明燕[2,3] 朱建国[2,3] 

机构地区：[1]贵州大学材料与冶金学院,贵州贵阳550025 [2]贵州省冶金化工研究所,贵州贵阳550002 [3]贵州省化工技术研发中心,贵州贵阳550002

出　　处：《化工矿物与加工》2016年第9期13-15,共3页Industrial Minerals & Processing

基　　金：贵州省科技厅和贵州科学院联合基金项目;贵州科学院青年基金项目(黔科院J合字[2013]12)

摘　　要：利用盐酸酸解中低品位磷矿,研究了磷矿中氟资源在酸解过程中的分布,确定了回收气相和液相中的氟资源的最佳条件:气相中,利用1L的模拟吸收塔,可获得质量分数为14.25%的氟硅酸溶液,氟回收率为94.57%;液相中,使用自制沉氟剂,加入100mL/L酸解液,反应时间为60min,氟回收率为70.24%,制备的氟硅酸钠各项指标均达到了标准HG/T3252-2000的要求。The distribution of fluorine in the process of acidoly sis was studied by leaching mid-low grade phosphate ore with hydrochloric acid. And the best condition of recovery of fluorine in gas phase and liquid phase was determined. In the gas phase, using the 1L simulation absorption tower, the concentration of 14.25% fluorosilieic acid solution can be obtained, recovery rate of fluorine is 94.57% and in the liquid phase, using the home made heavy fluorine agent, addition amount was 100 mL/L acidolysis solution, the reaction time was 60 rain, recovery rate of fluorine was 70. 24%, the indicators of sodium fluosilicate have reached the requirements of the standard HG/T3252-2000 .

关 键 词：中低品位磷矿 除氟 氟硅酸钠 

分 类 号：TD985[矿业工程—选矿]