某含银高硫铜矿的综合回收试验

某含银高硫铜矿含铜0.76%、硫24.35%及银34.92 g/t,有价矿物种类多、矿石性质复杂,采用抑硫优先浮选铜-活化浮选硫的原则工艺流程进行试验,配合石灰作为硫化铁矿物抑制剂以及筛选出丁基黄药+酯-105作为硫化铜矿物的组合捕收剂,强化了银在铜精矿中的富集。在选定工艺条件下,可获得铜品位21.60%、银品位602.84 g/t的铜精矿(铜和银回收率分别为89.30%和54.39%),硫品位45.60%、银21.55g/t的硫精矿(硫和银回收率分别为89.79%和29.59%),实现了铜、硫和银的综合回收利用。

Comprehensive Recovery Study on a High-Sulfur Copper Ore Containing Silver

A silver-containing high-sulfur copper ore contains 0.76% copper, 24.35% sulfur and 34.92 g/t of silver. There are many valuable minerals and their properties are complicated. The combined process of sulfur preferential flotation of copper and activated sulfur suppression process was adopted for testing. The enrichment of silver in copper concentrates was improved by using lime as the inhibitor of iron sulfide minerals and butyl xanthate + ester-105 as the combined collector of copper sulfide minerals. Under the optimized conditions, the obtained copper concentrate contained 21.60% copper and 602.84 g/t of silver, and their recovery rate were 89.30% and 54.39% for copper and silver, respectively. However, the sulfur concentrate contained 45.60% sulfur and 21.55 g/t of silver, and their recovery rates were 89.79% and 29.59% for sulfur and silver, respectively. The comprehensive recovery of copper, sulfur and silver in the ore was realized by using the proposed process.