文山州都龙复杂多金属高铟锌焙砂中性-还原联合浸出试验研究  

Study on Neutral-reduction Combined Leaching of Durong Complex Polymetallic High Indium Zinc Calcine from Wenshan Prefecture

作　　者：周家榕 杨仕教 姜家端 ZHOU Jiarong;YANG Shijiao;JIANG Jiaduan(School of Resources Environment and Safety Engineering,University of South China,Hengyang,Hunan 421001,China;Yunxi Wenshan Smelting Zinc&Indium Co.,Ltd.,Wenshan,Yunnan 663701,China)

机构地区：[1]南华大学资源环境与安全工程学院,湖南衡阳421001 [2]云锡文山锌铟冶炼有限公司,云南文山663701

出　　处：《南华大学学报（自然科学版）》2023年第3期19-23,29,共6页Journal of University of South China：Science and Technology

摘　　要：在高铟、高铁闪锌矿在火法焙烧过程中,产出的锌焙砂在常规浸出条件下浸出率低,本文以文山州都龙复杂多金属高铟锌焙砂为研究对象,开展中性-高压还原联合浸出试验研究,通过条件优化,在初始浸出酸度为110 g/L,温度105℃,反应时间2.5 h,SO_(2)通入量理论值的1.05倍、搅拌速度450 r/min的条件下,锌、铟浸出率达到了98.96%、95.7%,有效解决了传统浸出工艺中锌、铟浸出率低的问题。In the context of pyrometallurgical roasting,the leaching efficiency of zinc calcine derived from high indium and high iron sphalerite is typically hindered by low leaching rates under conventional conditions.This study focuses on the complex multi-metal high indium zinc calcine obtained from Dulong,Wenshan,and presents a rigorous investigation employing a neutral-high pressure reduction combined leaching approach to overcome this limitation.By systematically optimizing the experimental parameters,including an initial leaching acidity of 110 g/L,a temperature of 105 ℃,a reaction time of 2.5 hours,a sulfur dioxide(SO_2) input at 1.05 times the theoretical value,and a stirring speed of 450 r/min,remarkable leaching rates of 98.96% and 95.7% for zinc and indium,respectively,were achieved.It provides a significant advancement in addressing the challenge of low leaching rates of zinc and indium in conventional processes.

关 键 词：锌焙砂 锌 铟 浸出率 SO_(2) 

分 类 号：TF81[冶金工程—有色金属冶金]