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Utilization of gold-bearing and iron-rich pyrite cinder via a chlorination-volatilization process
Ding, Jian1,2; Han, Pei-wei1; Lu, Cui-cui1,2; Qian, Peng1; Ye, Shu-feng1; Chen, Yun-fa1
2017-11-01
发表期刊INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
ISSN1674-4799
卷号24期号:11页码:1241-1250
摘要

The chlorination-volatilization process has been adopted to make full use of gold-bearing and iron-rich pyrite cinder. However, problems of low recovery rate, pulverization of pellets, and ring formation have been encountered during the industrialization of this process. The effects of various parameters on the volatilization rates of valuable metals and on the compressive strength of roasted pellets were investigated in this paper. The parameters include the CaCl2 dosage, heating temperature, and holding time. The results show that heating temperature is the most important parameter for the recovery of target metals. More CaCl2 was needed for the recovery of zinc than for the recovery of gold, silver, and lead. CaCl2 started to react with sulfides/SO2/SiO2 at temperatures below the melting point of CaCl2 to generate Cl-2/HCl. Gaseous CaCl2 was formed at higher temperatures and could react with any of the components. The compressive strength of roasted CaCl2-bearing pellets first decreased slowly with increasing temperature at temperatures lower than 873 K, which could result in the pulverization of pellets during heating. Their compressive strength increased dramatically with increasing temperature at temperatures greater than 1273 K. Certain quantities of CaCl2 and Fe(II) could improve the compressive strength of the roasted pellets; however, the addition of excessive CaCl2 decreased the compressive strength of pellets.

关键词Pyrite Cinder Gold Chlorination Oxidized Pellets Compressive Strength
文章类型Article
WOS标题词Science & Technology ; Technology ; Physical Sciences
DOI10.1007/s12613-017-1516-0
收录类别SCI
语种英语
关键词[WOS]Calcium-chloride ; Kinetics ; System ; Metals
WOS研究方向Materials Science ; Metallurgy & Metallurgical Engineering ; Mining & Mineral Processing
WOS类目Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Mining & Mineral Processing
项目资助者National Natural Science Foundation of China(51202249) ; National High-Tech Research and Development Program of China(2011AA06A104) ; Projects in the National Science & Technology Pillar Program during the 12th Five-year Plan Period(2012BAB08B04)
WOS记录号WOS:000416175800005
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/23444
专题多相复杂系统国家重点实验室
作者单位1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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GB/T 7714
Ding, Jian,Han, Pei-wei,Lu, Cui-cui,et al. Utilization of gold-bearing and iron-rich pyrite cinder via a chlorination-volatilization process[J]. INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS,2017,24(11):1241-1250.
APA Ding, Jian,Han, Pei-wei,Lu, Cui-cui,Qian, Peng,Ye, Shu-feng,&Chen, Yun-fa.(2017).Utilization of gold-bearing and iron-rich pyrite cinder via a chlorination-volatilization process.INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS,24(11),1241-1250.
MLA Ding, Jian,et al."Utilization of gold-bearing and iron-rich pyrite cinder via a chlorination-volatilization process".INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS 24.11(2017):1241-1250.
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