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《GEOCHIMICA》 1995-S1
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EXPERIMENTAL RESEARCH ON FUNCTION OF OXALIC ACID IN LEACHING OF Fe, Cu, Pb, Zn IN SEDIMENTARY STRATA

Li Zhaolin; Guo Hongzhong (Department of geology, Zhongshan University, Guangzhou 510275) Wang Yurong (Guangzhou institute of Geochemistry. The Chinese Academy of Sciences, Guangzhou)  
The metallogenic simulated experiments of the activation leaching of Fe, Cu,Pb, Zn in the sedimentary strata by oxalic acid have been studied using quasi-flowing hydrothermal reaction equipment. The results show that the oxalic acid has a strong ability to activate and to extract the metal elements in the strata and the best leaching temperature range is from 125℃ to 150℃. Based on the metal contents in liquid and solid phase, complex stability constant and the leaching sequence combined with metallogenic feature in Quren basin, it is suggested that the ore-forming elements exist mainly in organic complex. And the results show that the organism may play an important role in the formation of the superlarge lead-zinc deposit in Fankou, Guangdong Province.
【Fund】: 国家自然科学基金
【CateGory Index】: P595
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