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28卷    第10期    总第235期    2018年10月

[PDF全文下载]        

    

文章编号:1004-0609(2018)-10-2086-08
锌精矿与锌浸渣协同浸出及氧化转化行为
付中梦,邓志敢,魏 昶,李兴彬,李存兄,樊 刚

(昆明理工大学 冶金与能源工程学院,昆明 650093)

摘 要: 锌精矿与锌浸渣协同浸出过程中利用Fe3+与锌精矿发生氧化还原反应,实现锌精矿与锌浸渣的同步溶解,且缓解溶液中高浓度Fe3+对锌浸渣溶解的抑制作用。对渣矿协同浸出的矿物溶解行为进行研究,同时也以单一矿物锌精矿为研究对象,研究了其在H2SO4-Fe2(SO4)3体系中的氧化转化行为。结果表明:渣矿协同浸出能有效提高有价金属的浸出率,且浸出液中Fe3+含量较低,便于后续处理;根据XRD、SEM和XPS分析,锌精矿在氧化转化过程中不断溶解,锌精矿中的硫主要被氧化成单质硫进入渣中,且单质硫在矿物颗粒表面形成包裹,使其溶解不充分。

 

关键字: 锌精矿;锌浸渣;协同浸出;氧化转化

Simultaneous leaching of zinc residue and zinc concentrate and oxidative conversion behavior
FU Zhong-meng, DENG Zhi-gan, WEI Chang, LI Xing-bin, LI Cun-xiong, FAN Gang

Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China

Abstract:Based on the redox reaction of Fe3+ and zinc concentrate, the method of the simultaneous leaching of zinc concentrate and zinc residue was proposed. The method achieved the dissolution of the zinc concentrate and the zinc residue, and also relieved the inhibitory effect of high concentration Fe3+ on the dissolution of zinc residue. The dissolution behavior of simultaneous leaching was studied, at the same time, taking zinc concentrate as the research object, the oxidative conversion behavior in H2SO4-Fe2(SO4)3 system was also studied. The results show that the simultaneous leaching process can effectively increase the leaching rate of valuable metals, and the content of Fe3+ in the leachate is low, which is convenient for subsequent treatment. According to the XRD, SEM and XPS analyses, zinc concentrate is continuously dissolved during the process of oxidative conversion. The sulphur of zinc concentrate is mainly oxidated into the elemental sulfur entered the residue. The elemental sulfur forms a wrap on the surface of the mineral particles, which results the zinc concentrate cannot fully dissolve.

 

Key words: zinc concentrate; zinc residue; simultaneous leaching; oxidation conversion

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