摘要
某含砷金精矿中金矿物嵌布粒度较细,金主要以硫化物(黄铁矿、毒砂)包裹金形式存在。采用焙烧预处理-氰化浸出工艺,研究了一段焙烧、两段焙烧和添加剂焙烧对氰化浸出的影响。结果表明,采用常规一段、两段焙烧方式,金浸出率均未达到90%,银浸出率低于50%;添加剂焙烧效果显著,在焙烧温度650℃、时间1.0 h、添加剂用量NaXY 100 kg/t+YC-120 kg/t的条件下,金浸出率达到93.56%,银浸出率达62.45%。
The arsenic-containing gold concentrates used in the experimental study have a fine dissemination of gold minerals,with gold predominately wrapped in the sulphide minerals,such as pyrite and arsenopyrite.A process consisting of pretreatment with roasting and cyanidation leaching was adopted in the experiment and the effects of one-stage roasting,two-stage roasting and the roasting with additives on the following cyanidation leaching results were investigated in the experiments.It is found that the traditional one-stage roasting and two-stage roasting process just lead to the gold leaching rate less than 90%and silver leaching rate less than 50%.However,the roasting with additives can bring in a remarkable effect,showing that gold leaching rate is up to 93.56%and silver leaching rate reaches 62.45%after an one hour roasting process at 650℃with additives of NaXY 100 kg/t and YC-120 kg/t.
作者
胡杨甲
赵志强
罗思岗
赵杰
王国强
HU Yang-jia;ZHAO Zhi-qiang;LUO Si-gang;ZHAO Jie;WANG Guo-qiang(State Key Laboratory of Mineral Processing Science and Technology,Mining and Metallurgy Technology Group Co Ltd,Beijing 100160,China)
出处
《矿冶工程》
CAS
CSCD
北大核心
2020年第4期88-91,共4页
Mining and Metallurgical Engineering
基金
“十二五”国家科技支撑计划项目(2015BAB13B02)
北京矿冶科技集团有限公司基金项目(JTKJ1820)。
关键词
含砷金精矿
焙烧
添加剂
氰化浸出
金
银
砷
arsenic-containing gold concentrate
roasting
additives
cyanidation leaching
gold
silver
arsenic
