废钨钴硬质合金资源化回收技术研究进展  

Research Progress of Recycling Waste Tungsten-cobalt Carbide Resources

作　　者：褚倩倩 刘兵兵 韩桂洪[1] 黄艳芳[1] 孙虎 CHU Qianqian;LIU Bingbing;HAN Guihong;HUANG Yanfang;SUN Hu(School of Chemical Engineering,Zhengzhou University,Zhengzhou 450001,Henan,China)

机构地区：[1]郑州大学化工学院,河南郑州450001

出　　处：《中国钨业》2023年第1期65-78,共14页China Tungsten Industry

基　　金：国家自然科学基金(52174263);河南省优秀青年基金(222300420075);河南省高校科技创新人才(23HASTIT004)。

摘　　要：中国钨资源储量丰富,但其二次利用率与国外存在较大差距。钴资源储量较少,钴原料极度依赖进口。废硬质合金中含有较多钨钴资源,其二次利用对解决资源供应问题具有重要意义。钨、钴作为稀有难熔金属,具有耐高温、耐腐蚀、硬度高等优异性能,但也造成了废钨钴硬质合金资源化回收难度大的问题。文章综述了以机械破碎法、惰性气体焙烧法为主的预处理方法,湿法、电化学法、固态焙烧法、火法-湿法联合工艺及废钨钴硬质合金直接产品化为主的分离方法。主要介绍了分离方法的基本原理和研究现状,并且分析了各种方法的优缺点和应用前景。可为废硬质合金中钨钴资源的分离回收和循环利用提供思路与技术支撑。The secondary utilization rate of tungsten in China lags far behind that of industrialized countries in spite of the rich tungsten reserve in the country.At the same time,the supply of cobalt is extremely dependent on overseas resources due to the small cobalt resource reserves in the country.Waste cemented carbide contains more tungsten and cobalt resources,and its secondary utilization is of great significance to solve the problem of resource supply.As rare refractory metals,tungsten and cobalt have excellent properties such as high temperature resistance,corrosion resistance and high hardness,but it also makes it difficult to recycle waste tungsten-cobalt cemented carbide.In this paper,the pretreatment methods such as mechanical crushing and inert gas roasting,the combined process of wet method,electrochemical method,solid roasting method and pyrometallurgical method,and the separation methods such as direct production of waste tungsten-cobalt cemented carbide are summarized.This paper mainly introduces the basic principle and research status of separation methods,and analyzes the advantages and disadvantages and application prospects of various methods.It can provide ideas and technical support for the separation,recovery and recycling of tungsten and cobalt resources in waste cemented carbide.

关 键 词：废硬质合金 钨钴资源 资源化 回收 分离 

分 类 号：X765[环境科学与工程—环境工程]