摘要
万年银金矿混合精矿系高砷精矿。经实验室详细研究,该精矿中的砷经细菌氧化处理后可脱除90％以上(即可使精矿含砷量由原近20％降至<2％)。关键因素是选用菌种要能对毒砂氧化力强、必须伴有Fe^(3+)7～8g/L的酸性硫酸高铁溶液、精矿粒度要细(至少-320目占80％以上)以及矿浆浓度较低(5～6％)。
The silver-gold concentrate of Wan-Nian Silver-Gold Mine is of high content of arsenic. Through bacterial oxidation, the arsenic can be removed over 90% from concentrate (the arsenic content can be reduced to <2%) The key point is that the oxidizability of the selected bacterial species on arsenical pyrite must be high. Besides,it must be accompanied with ferric sulfate solution (Fe8+ content must comes up to 7-8g/L),fine grain of concentrate (at least -320 mesh amounts to 80%) and low pulp density (5-6W/V)
出处
《黄金》
CAS
北大核心
1991年第6期24-29,共6页
Gold
基金
国家自然科学基金资助课题
关键词
含砷银金精矿
细菌代谢
毒砂
arsenic-bearing silver-gold concentrate
arsenical pyrite
bacterial oxidation
removal rate of arsenic
