摘要
研究采用高温氯化工艺回收焙烧氰化尾渣中的有价金属。结果表明,在氯化钙添加量7%、1 100℃焙烧2h的条件下,Au、Ag、Cu、Pb、Zn的挥发率分别达到97.52%、71.78%、85.92%、98.59%、93.81%。球团采用梯级烘干的干燥工艺,经40min干燥后,干球团落下强度>10次/0.5m,抗压强度90%>100N,基本符合回转窑进料的强度要求。
Recovery of valuable metals from roasting cyanidation residue by high temperature chloridizing was investigated.The results show that volatilization rate of Au,Ag,Cu,Pb and Zn is 97.52%,71.78%,85.92%,98.59% and 93.81%,respectively under the conditions of CaCl2 addition of 7%,roasting temperature of 1 100℃,and roasting time of 2h.Gradient drying process was adopted to prevent pellet bursting and after 40 min drying,falling strength of dry pellets is10times/0.5mand compressive strength is 90%〉100N,both basically meeting the feeding requirement of rotary kiln.
出处
《有色金属（冶炼部分）》
CAS
北大核心
2017年第2期15-18,共4页
Nonferrous Metals（Extractive Metallurgy)
基金
国家高技术研究发展计划(863计划)项目(2011AA06A104)
关键词
氰化尾渣
高温氯化
有价金属
挥发率
梯级烘干
cyanidation residue
high temperature chloridizing
valuable metals
volatilization rate
gradient drying
