Experimental Study on Mine Spoils During Superficial Geochemical Processes

Based on the mineral and chemical compositions of spoils taken from the Shilu Cu-Mo deposit and Hetai gold deposit ,the leaching and batch experiments were made on spoils taken from these two deposits using the leaching column designed by the authors.The experimental results showed that it is not al...

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Bibliographic Details
Published in:Acta geochimica 2002-10, Vol.21 (4), p.289-297
Main Author: 王一先 白正华
Format: Article
Language:English
Subjects:
Acidity
Amorphous materials
Chemical composition
Copper
Drainage water
Environmental restoration
Gangue
Geochemistry
Heavy metals
Hydroxides
Leaching
Metals
Mine drainage
Mineral assemblages
Mineralogy
Minerals
Mining
Preferential flow
Rehabilitation
Studies
Water pollution
表生地球化学
金属尾矿
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Summary:Based on the mineral and chemical compositions of spoils taken from the Shilu Cu-Mo deposit and Hetai gold deposit ,the leaching and batch experiments were made on spoils taken from these two deposits using the leaching column designed by the authors.The experimental results showed that it is not always true that the imine drainage is acidic.Its acidity depends on acid-buffering capacity of gangue,host rock and its alteration mineral assemblage.The composi-tion of the drainage water is related with the interaction between superficial or underground water and solid materials in the spoils,including minerals,hydroxides and amorphous substances.The leaching extent of the element is related with its occurrence form in the deposit.The prefer-ential flow results in leaching-out of heavy metals in large amounts.So it is important to prevent the generating of preferential flow in the system.The results will provide very important grounds for the comprehensive management of land and ecological rehabilitation of the mine site.
ISSN:1000-9426
2096-0956
1993-0364
2365-7499
DOI:10.1007/BF02831530