CAS OpenIR
Simultaneous extraction of gold and zinc from refractory carbonaceous gold ore by chlorination roasting process
Wang, Hong-jun1; Feng, Ya-li1; Li, Hao-ran2; Kang, Jin-xing1
2020-04-01
Source PublicationTRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
ISSN1003-6326
Volume30Issue:4Pages:1111-1123
AbstractA novel process based on chlorination roasting was proposed to simultaneously recover gold and zinc from refractory carbonaceous gold ore by using NaCl as chlorination agent. The effects of roasting temperature, roasting time and NaCl content on the volatilization rates of gold and zinc were investigated. The reaction mechanism and the phase transition process were also analyzed by means of SEM, EDS and XRD. The results demonstrated that under the optimal conditions of NaCl content of 10%, roasting temperature of 800 degrees C, roasting time of 4 h and gas flow rate of 1 L/min, the rates of gold and zinc were 92% and 92.56%, respectively. During low-temperature chlorination roasting stage, a certain content of sulfur was beneficial to the chlorination reactions of gold and zinc; and during high-temperature chlorination roasting stage, the crystal structure of vanadium-bearing mica was destroyed, and the vanadium-containing oxides were beneficial to the chlorinating volatilization of gold and zinc. Eventually, the chlorinated volatiles of gold and zinc could be recovered by alkaline solution.
Keywordrefractory carbonaceous gold ore chlorination roasting thermodynamic calculation gold zinc
DOI10.1016/S1003-6326(20)65282-7
Language英语
WOS KeywordVALUABLE METALS ; RECOVERY ; CYANIDE ; SILVER ; PRETREATMENT ; MATTER ; IRON ; BIOOXIDATION ; BEHAVIOR ; VANADIUM
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000531812800024
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/40483
Collection中国科学院过程工程研究所
Corresponding AuthorFeng, Ya-li
Affiliation1.Univ Sci & Technol Beijing, Sch Civil & Resources Engn, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Wang, Hong-jun,Feng, Ya-li,Li, Hao-ran,et al. Simultaneous extraction of gold and zinc from refractory carbonaceous gold ore by chlorination roasting process[J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,2020,30(4):1111-1123.
APA Wang, Hong-jun,Feng, Ya-li,Li, Hao-ran,&Kang, Jin-xing.(2020).Simultaneous extraction of gold and zinc from refractory carbonaceous gold ore by chlorination roasting process.TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,30(4),1111-1123.
MLA Wang, Hong-jun,et al."Simultaneous extraction of gold and zinc from refractory carbonaceous gold ore by chlorination roasting process".TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA 30.4(2020):1111-1123.
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