Experimental Study on Comprehensive Recovery of Molybdenum, Sulfur and Copper from Alkaline Leaching Molybdenum Sludge

YANG Wei; LIU Jinrui; REN Qian

doi:10.13779/j.cnki.issn1001-0076.2021.04.010

2021 Vol. 41, No. 4

Article Contents

Article navigation > Conservation and Utilization of Mineral Resources > 2021 > 41(4): 78-84

Next Article Previous Article

YANG Wei, LIU Jinrui, REN Qian. Experimental Study on Comprehensive Recovery of Molybdenum, Sulfur and Copper from Alkaline Leaching Molybdenum Sludge[J]. Conservation and Utilization of Mineral Resources, 2021, 41(4): 78-84. doi: 10.13779/j.cnki.issn1001-0076.2021.04.010

Citation:

YANG Wei, LIU Jinrui, REN Qian. Experimental Study on Comprehensive Recovery of Molybdenum, Sulfur and Copper from Alkaline Leaching Molybdenum Sludge[J]. Conservation and Utilization of Mineral Resources, 2021, 41(4): 78-84. doi: 10.13779/j.cnki.issn1001-0076.2021.04.010

Experimental Study on Comprehensive Recovery of Molybdenum, Sulfur and Copper from Alkaline Leaching Molybdenum Sludge

Chengdu Hongbo molybdenum Co., Ltd., Chengdu 610300, Sichuan, China

More Information

Corresponding author: REN Qian, ren.qian@cxtc.com

Received Date: 13 March 2021

Publish Date: 25 August 2021

Abstract

Abstract

In order to comprehensively recover molybdenum, sulfur, and copper from molybdenum removal residues from tungsten smelting, this paper proposes the idea of alkaline leaching molybdenum removal residues to separate copper and molybdenum, and oxidation of S^2- in the leaching solution to separate sulfur and molybdenum. This article investigates in detail the influence of sodium hydroxide dosage, temperature, reaction time, liquid-solid ratio and other process conditions on the molybdenum leaching rate and S^2-residual rate in the alkaline leaching process. The test results show that when the normal pressure alkaline leaching temperature is 85 ℃, the sodium hydroxide dosage is 1.1 times the theoretical amount, the reaction is 180 minutes, and the liquid-solid mass ratio is 3 GA6FA 1, the molybdenum leaching rate is 99.48%, and the copper leaching rate is less than 0.1% The S^2-residual rate is higher than 98%. When sulfuric acid and sodium chlorate are used as oxidants to oxidize the alkali leaching filtrate, the S^2-residual rate is lower than 0.2%. When high-pressure oxygen alkaline leaching is at a temperature of 85 ℃, the amount of sodium hydroxide is 1.1 times the theoretical amount, the reaction is 180 minutes, and the mass ratio of liquid to solid is 3 GA6FA 1, the molybdenum leaching rate is 99.82%, the copper leaching rate is less than 0.5%, and the S^2-residual rate As low as 0.35%; both processes can achieve deep separation of molybdenum from copper and sulfur, providing a practical solution for the comprehensive utilization of molybdenum removal sludge.
- copper Molybdenum sludge /
- alkaline leaching /
- oxidation of low sulfur /
- separation of sulfur and molybdenum

FullText(HTML)

References

[1]	霍广生, 赵中伟, 李洪桂, 等. 不同金属硫化物从钨酸盐溶液中除钼的效果[J]. 中国有色金属学报, 2004, 14(2): 302-305. doi: 10.3321/j.issn:1004-0609.2004.02.027 CrossRef Google Scholar
[2]	霍广生. 钨冶炼过程中钨钼分离新工艺及其理论研究[D]. 长沙: 中南大学, 001.76.http://cdmd.cnki.com.cn/article/cdmd-10533-2002060683.htm Google Scholar
[3]	肖超, 吴海国. 陈化除钼渣处理工艺试验研究[J]. 中国钼业, 2012, 36(6): 25-28. doi: 10.3969/j.issn.1006-2602.2012.06.006 CrossRef Google Scholar
[4]	黄美萍, 朱同浩. 从硫化除钼沉淀渣中回收钨的试验[J]. 中国钨业, 1992(7): 18-19. Google Scholar
[5]	付维琴, 杨大锦. 从除钼渣中浸出钨钼试验研究[J]. 湿法冶金, 2015, 34(3): 193-195. Google Scholar
[6]	龚丹丹, 黄泽辉, 赵立夫, 等. 钼渣处理工艺试验研究[J]. 中国钨业, 2015(3): 38-42. doi: 10.3969/j.issn.1009-0622.2015.03.009 CrossRef Google Scholar
[7]	孙铭, 王嘉, 江英英, 等. APT铜钼渣回收工艺过程及环境影响分析[J]. 广东化工, 2012, 39(7): 145-147. doi: 10.3969/j.issn.1007-1865.2012.07.078 CrossRef Google Scholar
[8]	贾利攀, 刘旭恒等. 除钼渣浸出行为的热力学分析[J]. 稀有金属, 2019, 43(5): 526-531. Google Scholar
[9]	唐忠阳. 从除钼渣中回收铜、钼新工艺的研究[D]. 长沙: 中南大学, 2002.http://cdmd.cnki.com.cn/article/cdmd-10533-2006036810.htm Google Scholar
[10]	李洪桂, 羊建高, 李昆. 钨冶金学[M]. 长沙: 中南大学出版社, 2010.217. Google Scholar
[11]	张义忠. 钨钼分离理论及新工艺研究[D]. 昆明: 昆明理工大学, 2002.https://d.wanfangdata.com.cn/thesis/Y482305 Google Scholar
[12]	朱传贵, 等. 钼渣中有价金属的回收. 中国钼业, 2000, 24(2): 40-41 doi: 10.3969/j.issn.1006-2602.2000.02.015 CrossRef Google Scholar
[13]	向铁根, 杨伯华. 钼冶金[M]. 长沙: 中南大学出版社, 2009. Google Scholar
[14]	汪洋. 从硫废料中回收相的生产实践. 中国钼业, 1999, 23(2): 30-31. Google Scholar
[15]	李洪桂. 稀有金属冶金学. 北京: 冶金工业出版社. 1989. Google Scholar
[16]	黄万抚. 从铜精矿中回收铂的试验研究. 中国钨业. 15(2): 21-23http://www.cnki.com.cn/Article/CJFDTotal-ZGWU200002007.htm Google Scholar
[17]	张邦胜, 蒋开喜, 等. 酸性加压氧化分解辉钼精矿的试验研究[J]. 稀有金属, 2007, 31(3): 384-392. doi: 10.3969/j.issn.0258-7076.2007.03.021 CrossRef Google Scholar
[18]	杨立斌, 杜娟, 沙作良, 等. 十水硫酸钠冷却结晶动力学的研究[J]. 无机盐工业. 2009.41(4): 18-20. doi: 10.3969/j.issn.1006-4990.2009.04.006 CrossRef Google Scholar
[19]	任倩, 刘锦锐, 杨伟. 一种从除钼渣中提取钼制钼酸钠的方法: CN108893611B[P]. 2020-01-21. Google Scholar
[20]	刘锦锐, 任倩, 杨伟. 一种以除钼渣为原料制取钼酸铁的方法: CN 108977672 B[P]. 2020-09-25. Google Scholar