Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

您目前所在的位置:首页 - 期刊简介 - 详细页面

中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第16卷    第5期    总第86期    2006年5月

[PDF全文下载]        

    

文章编号:  1004-0609(2006)05-0914-05
银锰矿中银的回收新工艺
张小云, 田学达, 刘小玲, 张东方

(湘潭大学 化工学院, 湘潭 411105)

摘 要:  采用“浮选—磁选—还原浸出—重选脱泥”工艺处理银含量为3.15×10-4的某银锰矿。 银的独立矿物用浮选回收; 以类质同象分布于锰矿物中的银用磁选富集; 将浮选精矿和银锰磁选精矿合并, 用焙烧黄铁矿产生的SO2和纤维素还原剂进行还原浸出, 锰溶于液相中, 银在浸出渣中富集; 将浸出渣进行重选脱泥, 可得Ag含量为59.6×10-4的银精矿, Ag的总回收率大于90.68%。

 

关键字:  银; 银锰矿; 浮选; 磁选; 还原浸出; 脱泥

A novel technique for silver recovery from silver-manganese ore
ZHANG Xiao-yun, TIAN Xue-da, LIU Xiao-ling, ZHANG Dong-fang

Chemical Engineering College, Xiangtan University, Xiangtan 411105, China

Abstract: The silver in some oxidized silver-manganese ore with a grade of 3.15×10-4 Ag was concentrated with a novel technique including flotation, magnetic separation, reducing leaching and gravity desliming. Around 8.50% silver minerals were separated by flotation, and 91.50% silver contained in manganese ore through isomorphism was concentrated by magnetic separation. The manganese in the concentrate of both flotation and magnetic separation was dissolved in a reducing leaching, in which pyrite and some cellulose reductant were used. A silver concentrate with a grade of 59.6×10-4 and a recovery of 90.68% were obtained by a gravity desliming process.

 

Key words: silver; silver-manganese ore; flotation; magnetic separation; reducing leaching; desliming

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

主管:中国科学技术协会 主办:中国有色金属学会 承办:中南大学
湘ICP备09001153号 版权所有:《中国有色金属学报》编辑部
------------------------------------------------------------------------------------------
地 址:湖南省长沙市岳麓山中南大学内 邮编:410083
电 话:0731-88876765,88877197,88830410   传真:0731-88877197   电子邮箱:f_ysxb@163.com