黄金科学技术
黃金科學技術
황금과학기술
GOLD SCIENCE AND TECHNOLOGY
2014年
4期
124-128
,共5页
碳质金矿%微波焙烧法%煤油掩蔽%提金工艺%预处理
碳質金礦%微波焙燒法%煤油掩蔽%提金工藝%預處理
탄질금광%미파배소법%매유엄폐%제금공예%예처리
carbonaceous gold ore%microwave roasting method%kerosene masking gold extraction process%pretreatment
试验样品采自黔西南某金矿，含金1.97×10-6，砷1.27%，有机碳1.62%，是典型的低品位含碳难处理金矿，直接氰化金浸出率＜3%。试验对比了碳浸法、煤油掩蔽法、次氯酸盐处理法和微波处理法的提金效果。碳浸氰化金浸出率仅为17.26%，添加煤油作为掩蔽剂磨矿-氰化后金的浸出率可提高到41%~42%，次氯酸盐预处理工艺效果不佳。微波处理工艺取得较好的结果，金浸出率可以达到82%以上，但需要在矿石中配入一定量的辅助药剂。
試驗樣品採自黔西南某金礦，含金1.97×10-6，砷1.27%，有機碳1.62%，是典型的低品位含碳難處理金礦，直接氰化金浸齣率＜3%。試驗對比瞭碳浸法、煤油掩蔽法、次氯痠鹽處理法和微波處理法的提金效果。碳浸氰化金浸齣率僅為17.26%，添加煤油作為掩蔽劑磨礦-氰化後金的浸齣率可提高到41%~42%，次氯痠鹽預處理工藝效果不佳。微波處理工藝取得較好的結果，金浸齣率可以達到82%以上，但需要在礦石中配入一定量的輔助藥劑。
시험양품채자검서남모금광，함금1.97×10-6，신1.27%，유궤탄1.62%，시전형적저품위함탄난처리금광，직접청화금침출솔＜3%。시험대비료탄침법、매유엄폐법、차록산염처리법화미파처리법적제금효과。탄침청화금침출솔부위17.26%，첨가매유작위엄폐제마광-청화후금적침출솔가제고도41%~42%，차록산염예처리공예효과불가。미파처리공예취득교호적결과，금침출솔가이체도82%이상，단수요재광석중배입일정량적보조약제。
T he samples were collected from a gold mine in southwest of Guizhou Province,which are all of the typical of low-grade refractory gold ore containing 1.97×10-6 Au,1.27%As and 1.62%organic carbon.The leaching rate of gold by cyanidation is lower than 3%.Reseasch on CIL,kerosene masking,hypochlorite pretreatment, microwave pretreatment was carried out to study the effect of leaching gold.The leaching rate of gold by CIL is 17.26%.By adding kerosene to grinding,cyanidation leaching rate of gold can be increased to 41%~42%.And the results of hypochlorite leaching are not good.The third process,microwave pretreatment achieve better results.After microwave pretreatment,the leaching rate of gold by cyanidation can be increased to over 82%,but need to add some special agents to the ore.
