摘要
本研究对江西等地所产的民窿毛钨矿用碱法提钨进行了工艺试验,结果表明:原始矿石的化学组成,性质和反应温度,压力及苛性钠浓度等对碱浸过程的钨浸出率有显著影响,应用配方技术及添加白钨矿分解剂能较好地解决民窿毛钨矿中高硅、钙等原料的处理,研究还发现了一种未见资料报道的碱浸提钨新方法,此法可使通常处于平衡状态的反应继续进行,明显地提高浸出过程的金属回收率,其浸出率达99％。
In this research, experiments on the production of ammonium parat-ungstate by the base-leaching process from rough tungsten ores produced by local individual miners in Jiangxi were carried iout.The experimental results show the chemical components and properties of run-of-mine ore, the reaction temperature and pressure and the caustic soda concentration all have remarkable effects on the leaching rate. Technologically,by applying dispensation techniques and adding scheelite-decomposing agents the problem due to the high content of silicon and calcium in the ore can be solved . And a new process of tungsten production by the base-leaching method which had not been reported before was developed . By this process chemical reaction will go on without let-up during the operation while by the old one there are times when chemical reaction comes to be in equilibriumum and stops , and so the recovery rate can be noticeably increased , in fact,it reaches 99%.
出处
《南方冶金学院学报》
1989年第2期75-82,共8页
Journal of Southern Institute of Metallurgy
关键词
钨矿
仲钨酸铵
制取
tungsten, ammonium paratungstate, hydrometal lurgy, wolframiet
