ISSN: 1003-6326
CN: 43-1239/TG
CODEN: TNMCEW

Vol. 16    No. 3    June 2006

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Separation of silver from silver-manganese ore with cellulose as reductant
ZHANG Xiao-yun(张小云), TIAN Xue-da(田学达), ZHANG Dong-fang(张东方)
(College of Chemical Engineering, Xiangtan University, Xiangtan 411105, China)
Abstract:  The silver in some silver-manganese ore with a grade of 3.15×10−4 was concentrated by a combined beneficiation technique including magnetic separation, flotation, reducing leaching and gravity desliming. The major silver contained in manganese ore as isomorphism was concentrated by magnetic separation, while around 8.50% of the silver individual minerals were separated by flotation. The manganese in the mixed concentrate of both magnetic separation and flotation was dissolved in a reducing leaching, in which some cellulose reductant named CMK was used. Part of the slime contained in leach residue was removed by a laboratory desliming equipment. A silver concentrate with a grade of 4.96×10−3 Ag and a recovery of 84.25% were obtained.
Key words: silver; silver-manganese ore; magnetic separation; flotation; reducing leaching; desliming
Superintended by The China Association for Science and Technology (CAST)
Sponsored by The Nonferrous Metals Society of China (NFSOC)
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