钨绿色冶炼工艺研究方向和技术进展

钨绿色冶炼工艺研究方向和技术进展

万林生1,邓登飞1,赵立夫2,李红超2,徐国钻2,梁勇1,3

(1.江西理工大学冶金与化学工程学院,江西赣州341000;2.崇义章源钨业股份有限公司,江西崇义341300;

3.钨资源高效开发及应用技术教育部工程研究中心,江西赣州341000)

摘要:我国钨冶炼技术世界领先,但由于Na +和Cl -无法闭路循环,沿袭百年的碱(酸)浸出-净化-铵盐转型湿法工艺难以达到废水零排放要求.“钨精矿火法直接制取碳化钨”和“熔盐电解直接制取碳化钨或金属钨”工艺,在金属提纯和分离杂质方面存在难以克服的缺陷,同时存在酸洗废液排放的问题.铵盐不变体系白钨闭路冶炼工艺研究结果表明,与现行白钨碱法-离子交换工艺相比,全流程金属回收率提高2.6%,达到98.1%,APT 产品加工成本下降30%,可实现白钨无酸碱闭路冶炼和杂质元素的绿色分离,过程无废水排放.

关键词:钨;绿色冶炼;白钨闭路冶炼;钨冶炼技术进展

中图分类号:TF841.1文献标志码:A

Research direction and technical progress of green tungsten metallurgy WAN Lin-sheng 1,DENG Deng-fei 1,ZHAO Li-fu 2,LI Hong-chao 2,XU Guo-zuan 2,LIANG Yong 1,3

(1.School of Metallugry and Chemical Engineering,Jiangxi University of Science and Technology,Ganzhou 34100,China;2.Chongyi Zhangyuan Tungsten Co.,Ltd ,Chongyi 341300,China;3.Engineering Research Center of High-efficiency Development and Application Technology of

Tungsten Resources,Ministry of Education P.R China,Ganzhou 341000,China)

Abstract:Although a world leader in tungsten metallurgy,the acid and alkali leaching-chemical purification-ammonium salt transformation wet processing technology applied in China tungsten industry for hundreds of years failed to achieve zero waste water discharge due to the Na +and Cl -problems.The pyrogenic method for making tungsten carbide directly from tungsten concentrates and the process for making tungsten carbide or metallic tungsten directly by fused salt electrolysis have some insurmountable faults in metal purification and the separation of impurities.One of the bottle-neck problems is the waste acid and alkali water discharge.The results shows that,comparing with traditional technological process,the total yield of WO 3is 98.1%,up 2.6%.The cost has been reduced by 30%in this process.The technology has realized green scheelite smelting with acid and alkali-free with no waste water discharge.

Key words:tungsten;green extraction;research direction;technical progres

收稿日期:2013-03-08

基金项目:国家高技术研究发展计划(863计划)资助项目(2012AA061902);国家自然科学基金资助项目(51244005)

作者简介:万林生(1950-),男,教授,井冈学者特聘教授,主要从事钨钼湿法冶炼理论及工艺方面的研究,E-amil :wls4015@https://www.360docs.net/doc/d41727376.html,.文章编号:1674-9669(2013)05-0015-04

1钨冶炼绿色分离问题的提出

根据国家环境保护部2008年3月发布的新规,钨冶炼为一类元素排放废水,强制执行零排放要求.

虽然我国钨冶炼技术世界领先,但现有技术难以达到零排放要求[1-2],随着国家环保政策日趋严厉沿袭百年的钨冶炼工艺已经走到尽头,必须进行整体工艺的有色金属科学与工程第4卷第5期

2013年10月Vol.4,No.5Oct.2013Nonferrous Metals Science and Engineering

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