硫精矿焙烧、浸出提金试验研究  

Experimental Study on Gold Extraction from Sulfur Concentrate by Roasting and Leaching

作　　者：杨孟华 杨洪玉 朱晓玉 张世文[4] 田丰 YANG Menghua;YANG Hongyu;ZHU Xiaoyu;ZHANG Shiwen;TIAN Feng(School of Resources and Environmental Engineering,Hefei University of Technology,Hefei 230002,Anhui,China;Anhui Changzhiyuan Environmental Engineering Co Ltd,Hefei 230051,Anhui,China;Anhui Jinding Mining Co Ltd,Hefei 231500,Anhui,China;Anhui University of Science and Technology,Hefei 232001,Anhui,China)

机构地区：[1]合肥工业大学资源与环境工程学院,安徽合肥230002 [2]安徽长之源环境工程有限公司,安徽合肥230051 [3]安徽金鼎矿业有限公司,安徽合肥231500 [4]安徽理工大学,安徽合肥232001

出　　处：《矿冶工程》2023年第3期124-127,共4页Mining and Metallurgical Engineering

基　　金：国家重点研发计划资助项目(2020YFC1908601);安徽省自然资源科技资助项目(2020-K-8)。

摘　　要：对某硫精矿进行了焙烧、浸出试验研究,比较了固定床焙烧和沸腾焙烧对金浸出率的影响。结果表明,固定床焙烧适宜条件为:硫精矿粒度-0.074 mm粒级含量80%、焙烧温度650℃、焙烧时间4 h,沸腾焙烧适宜条件为:硫精矿粒度-0.074 mm粒级含量80%、焙烧温度650℃、焙烧时间3 h、焙烧气料比2.1 m^(3)/kg。2种焙烧方式所得焙砂在矿浆浓度33%、矿浆pH值11.5、碱处理时间2 h、CG505用量10 kg/t条件下浸出24 h,金浸出率分别为69.45%和69.92%,沸腾焙烧提金效果更佳。研究结果可为从硫精矿中回收有价元素提供技术依据。Experiments of roasting and leaching of some sulfur concentrate were performed,and the effects of two schemes with fixed bed roasting and fluidized bed roasting on gold extraction were analyzed.The results showed that with the sulfur concentrate at a sizing of 80%-0.074 mm,the proper conditions for a fixed bed roasting included a roasting temperature of 650℃and roasting time of 4 h;while the proper conditions for a fluidized bed roasting included a roasting temperature of 650℃and roasting time of 3 h,roasting gas and material in a ratio of 2.1 m^(3)/kg.The calcines obtained by these two roasting methods were then separately leached for 24 h with the slurry concentration of 33% and pH of 11.5,2 h alkali treatment and CG505 dosage of 10 kg/t,resulting in the leaching rate of gold reaching 69.45%and 69.92%respectively.It is shown that the fluidized bed roasting can bring in a better gold extraction result.This research results can provide a technical basis for recovery of valuable elements from sulfur concentrate.

关 键 词：硫精矿 沸腾焙烧 固定床焙烧 金 

分 类 号：TF831[冶金工程—有色金属冶金]