关键词: 铜硫矿 工艺矿物学 嵌布特征 嵌布粒度

Abstract: In view of the high zinc content in the ore of a copper sulfur mine in Shangrao,resulting in the zinc content in the sulfur concentrate exceeding the standard,affecting the normal production and operation of the mine,in order to find a solution,the process mineralogy research of the ore was carried out.The results show that: ①The ore of a coppersulfur mine in Shangrao has complex properties.The main elements available for beneficiation and recovery are copper and sulfur with contents of 0.58% and 10.20%,respectively.The zinc and silver content is 0.42% and 16.44 g/t respectively,which can be comprehensively recovered.The gangue is mainly quartz,carbonate and aluminosilicate minerals.②The main structure of the coppersulfur ore includes euhedral,semiautomatic granular structure,heteromorphic granular structure,metasomatic structure,granular mosaic structure and filling structure,and a small amount of colloidal structure.The main structures are disseminated structure,strip structure,veinlet structure,and a few block structures.③Chalcopyrite and sphalerite have the characteristics of mediumfinegrained distribution,while pyrite has the characteristics of mediumcoarsegrained distribution.The grain size of chalcopyrite is very different,the shape changes greatly,and the interlaid relationship is complicated.To improve the copper concentrate grade,the coarse concentrate must be finely ground.Most of the pyrite crystallizes well,which is suitable for dissociation and recovery under relatively coarse grinding fineness.④ Combining the site conditions and the existing status of zinc minerals,activation and flotation of zinc minerals can be considered to solve the problem of excessive zinc content in sulfide concentrates.

Key words: copper sulfide ore, process mineralogy, embedded characteristics, dissemination size