低品位含锗褐煤烟尘二次富集提锗工艺研究  

Study on Secondary Enrichment and Extraction of Germanium from Low Grade Germanium-bearing Dust of Cyclone Furnace

作　　者：曹洪杨 陈冬冬 饶帅 高远 陈少纯 张魁芳 朱薇 刘志强 CAO Hong-yang;CHEN Dong-dong;RAO Shuai;GAO Yuan;CHEN Shao-chun;ZHANG Kui-fang;ZHU Wei;LIU Zhi-qiang(Guangdong Research Institute of Rare Metals,Guangzhou 510651,China;Guangdong Province Key Laboratory of Rare Earth Development and Application,Guangzhou 510651,China;State Key Laboratory of Separation and Comprehensive Utilization of Rare Metals,Guangzhou 510651,China;School of Environmental Science and Engineering,Guangdong University of Technology,Guangzhou 510006,China)

机构地区：[1]广东省稀有金属研究所,广州510651 [2]广东省稀土开发及应用研究重点实验室,广州510651 [3]稀有金属分离与综合利用国家重点实验室,广州510651 [4]广东工业大学环境科学与工程学院,广州510006

出　　处：《有色金属（冶炼部分）》2019年第12期29-32,43,共5页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家科技支撑计划项目[2015BAB02B03];广东省科学院专项项目（2019GDASYL-0302011,2019GDASYL-0402003,2019GDASYL-0105079,2018GDASCX-0110,2017G1FC0007）;广东省科技项目（2017B030314081）

摘　　要：考察了硫化剂黄铁矿精矿对含锗褐煤旋涡炉烟尘中低品位锗资源二次挥发富集效果的影响,并结合微观结构分析及热重分析,采用HSC软件分析了含锗烟尘二次挥发富集过程的机理。结果表明,随着黄铁矿精矿用量、硫化反应温度、硫化反应时间的增加,烟尘中含锗量逐渐下降。在硫化剂黄铁矿精矿添加量20%、反应温度1200℃、反应时间6 h条件下,烟尘中锗的挥发率为91.82%,获得的二次烟尘平均锗含量为15.22%,实现了低品位含锗烟尘中锗的二次富集。Effects of vulcanizing agent,i.e.pyrite concentrate,on secondary volatilization enrichment of germanium resources in germanium-bearing lignite dust of cyclone furnace were investigated.Mechanism of secondary volatilization enrichment of germanium-bearing dust was analyzed by adopting HSC software combining microstructures and TG-DTG analysis.The results show that germanium content in dust drops with the increase of dosage of vulcanizing agent,vulcanization temperature,and reaction time.Average germanium content in secondary dust is 15.22%,germanium volatilization rate is 91.82%,and secondary enrichment of germanium in low-grade germanium-bearing dust is realized under the conditions including dosage of sulfide pyrite concentrate of 20%,reaction temperature of 1200℃,and reaction time of 6 h.

关 键 词：低品位 旋涡炉含锗烟尘 硫化剂 二次富集 

分 类 号：TF843[冶金工程—有色金属冶金]