摘要:
含铜炉渣中有价金属含量较高,对其回收利用可以缓解资源供需矛盾,减少对环境的污染,提高资源的综合利用率.传统处理含铜炉渣的方法成本高、铜回收率低,污染严重.采用先浮选预富集后冶金处理的回收方法,可以降低成本,减少污染.针对某炼铜炉渣有价金属矿物种类多、质地坚硬、易碎难磨、嵌布粒度细的矿物特征,进行铜渣浮选回收铜试验研究.首先进行磨矿细度、浮选浓度、捕收剂种类等条件试验,确定磨矿细度为-37μm 75%,浮选浓度为42%,混基黄药为捕收剂.在此基础上进行开路浮选试验并确定采用一次粗选、二次扫选、二次精选的闭路流程,获得铜精矿品位为15.74%,铜回收率为74.65%的浮选指标,实现了炼铜炉渣的清洁、有效回收可以为进一步的扩大试验提供参考依据.该技术的研究可以给类似含铜难处理物料的高效提取提供参考.
Abstract:
The content of the valuable metal in the copper-bearing slag is high,the recovery and utilization of the slag can alleviate the contradiction between supply and demand of the resources,reduce the pollution,and improve the comprehensive utilization rate of the resources.The traditional treatment of copper-bearing slag has the disadvantage of high cost,low copper recovery and serious pollution.An experimental study on the recovery of copper from copper-bearing slag as a kind of material with the characteristics of contenting various metals,hard texture,brittle,hard to grind,and fine dissemination size.These factors such as grinding fineness,flotation concentration and collector type were firstly examined,thus fixing the grinding degree of fineness is-37 μm accounting for 75 %,the flotation concentration was 42%,mixed group xanthate as collector.Then through the open circuit flotation test,adopting a closed circuit with a stage rougher flotation,two stage cleaning and two stage scavenging.The indexes of copper concentrate grade 15.74%,copper recovery 74.65% were obtained.The clean and effective recovery of copper slag can be realized,which can provide reference for further expansion experiment.The research of this technology can provide a reference for the efficient extraction of similar copper containing refractory materials.
下载: