离析焙烧富集工艺,比加筛分或浮选,看来是从渣和氧化矿中提取铜的一种可选择性的途径。本研究使用含2—4％铜的转炉渣,铜以金属形式直接回收。该法包括渣的预焙烧和在碳素物、碱金属或碱土金属氯化物存在下的离析焙烧,最后筛分回收离析的金属。研究了焙烧时间、温度、碳素物百分 The segregation roasting enrichment process, compared with sieving or flotation, appears to be an alternative route to extracting copper from slag and oxide mines. In this study, 2-4% copper converter slag was used, and copper was directly recovered in metal form. The process includes prebaking of the slag and calcination in the presence of carbonaceous, alkali or alkaline earth metal chlorides, and finally sieving to recover the segregated metal. The roasting time, temperature, percentage of carbonaceous matter were studied