关键词: 华阳川铀多金属矿, 粗粒预选抛尾, 工艺矿物学

Abstract: Huayangchuan uranium polymetallic ore of Shaanxi Province belongs to large mineral deposit with properties of large volume mineral， variety types of minerals， and it is exploitable. In order to provide technique basis on mineral processing technology the MLA， microscopic analysis， sieve analysis， profiling and other analysis was used to study the process mineralogy of it. The result shows that the content of uranium is 162 g/t， niobium is 237 g/t. They exist in betafite， plumbobetafite， and uraninite. the content of lead is 0.61%， silver is 350 g/t. They exist in galena and cerussite. And there are no independent minerals were found. The useful mineral’s particle size is very crude. Most of them are larger than 0.15 mm. The profile of typical ore shows that the content of uranium is maldistribution. The content of uranium in most of ore are 100 g/t and only a little ores'are higher than 300 g/t. And they are mutation. The sieve analysis shows that the uranium and lead are enriched in fine fraction. So the ore are suitable to be processed by coarse grain preconcentration. And comprehensive analysis shows that the content of useful minerals are maldistribution in primary ore and crushed ore are the typomorphic characteristic of ore suitable to be processed by coarse grain preconcentration.

Key words: Huayangchang uranium polymetallic ore, Process mineralogy, Coarse grain preconcentration