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介绍了芒特伊萨矿山有限公司希尔顿选矿厂矿样采用X-射线光电子光谱(XPS)法所做的表面分析结果。同时论述了在取样时间内所得浮选速率数据。取样时的矿浆化学测定包括Eh、pH、溶解氧、温度、溶解的金属离子分析和用乙二胺四醋酸(ED-TA)可萃取的金属离子。本文主要关于希尔顿选矿厂(Hilton Concentrator)的方铅矿浮选作业。历史上,当使用单独的乙基黄药捕收剂时,方铅矿在铅粗选时浮选速率较小。在同样条件下,二异丁基二硫代次膦酸盐捕收剂会增大方铅矿的浮选速率。这说明由于存在XPS所检测到的Ca-SO_4沉淀复盖层而限制了方铅矿的浮选速率。CaSO_4的存在将给料中硫化矿表面的总暴露面积限制在较低范围。浮选过程对于表面CaSO_4占优势的矿物是有选择性的。
The surface analysis results of X-ray photoelectron spectroscopy (XPS) on the ore samples of the Hilton Silica Mine in Mt. The flotation rate data obtained during the sampling period are also discussed. Chemical analysis of the pulp at sampling includes Eh, pH, dissolved oxygen, temperature, dissolved metal ion analysis and metal ions extractable with ethylenediaminetetraacetic acid (ED-TA). This article focuses on galena flotation at the Hilton Concentrator. Historically, galena had a flotation rate less during rough selection of lead when using a single ethyl xanthate collector. Under the same conditions, diisobutyl dithiophosphinate collector increases galena flotation rate. This shows that the flotation rate of galena is limited due to the presence of Ca-SO 4 precipitates detected by XPS. The presence of CaSO 4 limits the total exposed area of the sulfide ore surface in the feedstock to a lower range. The flotation process is selective for minerals that have a CaSO 4 predominance on the surface.