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Studies on environmentally friendly leaching processes in China
Alternative TitleChin. J. Chem. Eng.
Chen, JY; Zhang, Y; Lu, KY; Gong, QA; Zhu, GC
2001-02-01
Source PublicationCHINESE JOURNAL OF CHEMICAL ENGINEERING
ISSN1004-9541
Volume9Issue:1Pages:5-11
AbstractThe newly developed green leaching processes for chromium, lead and gold extraction from ores or concentrates are described. The chromium is extracted from the iron chromite ore with fused sodium hydroxide at 500-550 degreesC as sodium chromate. The galena in lead sulfide concentrate is converted into lead carbonate in ammonium or sodium carbonate solution at 50-80 degreesC followed by the separation of lead carbonate formed from the unconverted sulfide ores by flotation. Gold associated with sulfide ore (such as pyrite and chalcopyrite) can be extracted into sodium thiosulfate solution without any pretreatment such as roasting, high pressure aqueous oxidation or bacteria pre-leaching.; The newly developed green leaching processes for chromium, lead and gold extraction from ores or concentrates are described. The chromium is extracted from the iron chromite ore with fused sodium hydroxide at 500-550 degreesC as sodium chromate. The galena in lead sulfide concentrate is converted into lead carbonate in ammonium or sodium carbonate solution at 50-80 degreesC followed by the separation of lead carbonate formed from the unconverted sulfide ores by flotation. Gold associated with sulfide ore (such as pyrite and chalcopyrite) can be extracted into sodium thiosulfate solution without any pretreatment such as roasting, high pressure aqueous oxidation or bacteria pre-leaching.
KeywordIron Chromite Ore Lead Sulfide Ore Gold Associated With Sulfides Leaching Pretreatment Fused Sodium Hydroxide Leaching Carbonate Conversion Of Lead Sulfide
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
URL查看原文
Indexed BySCI
Language英语
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000167502400002
Citation statistics
Cited Times:42[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/5793
Collection研究所(批量导入)
AffiliationChinese Acad Sci, Inst Chem Met, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Chen, JY,Zhang, Y,Lu, KY,et al. Studies on environmentally friendly leaching processes in China[J]. CHINESE JOURNAL OF CHEMICAL ENGINEERING,2001,9(1):5-11.
APA Chen, JY,Zhang, Y,Lu, KY,Gong, QA,&Zhu, GC.(2001).Studies on environmentally friendly leaching processes in China.CHINESE JOURNAL OF CHEMICAL ENGINEERING,9(1),5-11.
MLA Chen, JY,et al."Studies on environmentally friendly leaching processes in China".CHINESE JOURNAL OF CHEMICAL ENGINEERING 9.1(2001):5-11.
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