西藏某含硫铅锌矿选矿实验研究

Research of CSAMT on Plateau-Permafrost Conditions in Geothermal Exploration

通过对西藏某含硫铅锌矿样主要矿物组成、矿石结构构造等研究,结果表明,闪锌矿以及方铅矿呈伸入树枝状、包含状及残留岛状等程度不等的接触交代关系,且细粒级(-0.01 mm)铅、锌矿物(20%~30%)在空间上存在趋同性分布的特点,导致实现提高铅、锌精矿品位的难度很大。通过实验研究宜采取优先浮铅、再浮锌的工艺流程,在磨矿细度为-0.074 mm 87.5%的时候,使用EML3、EML6等选矿药剂,可获得较好的选矿指标:铅精矿含铅59.38%、含银760 g/t、含锌3.45%,铅回收率77.07%、银回收率51.42%;锌精矿含锌43.20%、含铅2.43%、锌回收率74.61%。该选矿实验研究,为同类型矿山的进一步实验研究和开发提供了一定的借鉴意义。

Based on the study of the main mineral composition and ore structure of a sulfur-containing lead-zinc ore sample in Tibet,the results show that sphalerite and galena have different degrees of contact metasomatism extending into dendrites,inclusions and residual islands,and the fine-grained(-0.01 mm)lead and zinc minerals(20%~30%)have the characteristics of spatial convergence,which makes it difficult to improve the grade of lead and zinc concentrate It's big.Through the experimental study,the process flow of preferential lead flotation and zinc flotation should be adopted.When the grinding fineness is-0.074 mm,accounting for 87.5%,EML3,EML6 and other beneficiation reagents are used,the better beneficiation indexes can be obtained:the lead concentrate contains 59.38%lead,760 g/t silver,3.45%zinc,77.07%lead recovery,51.42%silver recovery,43.20%zinc,2.43%lead,74.61%zinc recovery.The experimental study of mineral processing provides a certain reference for the further experimental research and development of similar mines.