用选冶联合工艺综合回收钨矿中有价金属的研究

STUDY ON COMPREHENSIVE RECOVERY OF VALUABLE METALS IN TUNGSTEN ORES BY A PROCESS COMBINING MINERAL PROCESSING AND METALLURGY

本文以广东莲花山和瑶岭两钨矿试验为例,论述了在单用选矿方法难以将矿石中各有价元素合理回收的情况下,采用选冶联合工艺处理的可行性。联合工艺中,首先采用重-浮-磁相结合的选矿方法,所得的产品作为随后苛性钠-石灰法、氧压盐酸法、富氧氰化法等冶炼方法的原料。在确保环境不受污染的原则下,通过此方法可将钨矿中有价元素分离回收,从而获得好的社会和技术经济效益。

In this paper, experiments on two tungsten ores in L and Y Mine in Guangdong Province have been taken as example to expound the necessity of applying a process combining mineral processing and metallurgy. In this process, a combination of ore dressing process, i.e. gravity concentration-flotation-magnetic separation is applied at the first stage. The products thus obtained are taken as feed for the subsequent metallurgical processes such as caustic soda-lime process, pressurized oxidation-hydrochloric acid process and ferric chloride leaching. Under the principle of ensuring the environment from pollution, by use of this process, valuable elements in the tungsten ores can be separated and recovered, so that good social and technical economy benefit can be realized.