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Biooxidaton and cyanidation of arsenic-bearing gold ore in percolation columns

Xiang Lan;et al.(Institute of Chemical Metallurgy,Academia Sinica,Beijing)  
The biooxidation and cyanidation of Long-wang jiang arsenic-bearing gold ore in percolation columns was studied in this paper.Based on the experiments of rotary shaker,the percolation leaching of this ore in the scale of 9 kg ore/column was conducted.The influence of panical sizes,percolation ways and the activities of bacteria on the percolation leaching process were investigated.The experimental results indicated that the biooxidation of Long-wang-jiang arsenic-bearing gold ore was carried out selectively.66.8% of gold were extracted in the cyanidation process when 38.4% of arsenic were removed by bacteria,while further increase of arsenic removal had little effeet on the cyanidation pro-cess.
【Fund】: 国家自然科学基金
【CateGory Index】: TD953
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