矿冶工程
礦冶工程
광야공정
2014年
4期
92-98
,共7页
电解锰阳极泥%有机还原剂%浸出%锰%铅
電解錳暘極泥%有機還原劑%浸齣%錳%鉛
전해맹양겁니%유궤환원제%침출%맹%연
anode slime from manganese electrorefining%organic reductant%leaching%Mn%Pb
选用玉米秆、木薯淀粉、甘蔗渣和废糖蜜4种有机还原剂对某电解锰阳极泥进行了还原浸出试验研究,并对有机还原剂浸出锰阳极泥的机理进行了探讨。结果表明,在获得相同锰浸出率条件下,还原剂用量排序如下:淀粉<玉米秆<废糖蜜<甘蔗渣(水解)。玉米秆用量虽比淀粉大,但其来源广价格低,在适宜水解和浸出条件下,阳极泥锰浸出率可达97.01%。浸出液经除杂后,净化液锰含量达40.96 g/L,锰回收率92.29%。净化液经碳化结晶可制得碳酸锰产品,产品达到行业标准,锰回收率92.10%。浸出渣经浸出除杂处理,铅品位可提高到60.79%,达到三级铅精矿要求,铅回收率为82.52%。
選用玉米稈、木藷澱粉、甘蔗渣和廢糖蜜4種有機還原劑對某電解錳暘極泥進行瞭還原浸齣試驗研究,併對有機還原劑浸齣錳暘極泥的機理進行瞭探討。結果錶明,在穫得相同錳浸齣率條件下,還原劑用量排序如下:澱粉<玉米稈<廢糖蜜<甘蔗渣(水解)。玉米稈用量雖比澱粉大,但其來源廣價格低,在適宜水解和浸齣條件下,暘極泥錳浸齣率可達97.01%。浸齣液經除雜後,淨化液錳含量達40.96 g/L,錳迴收率92.29%。淨化液經碳化結晶可製得碳痠錳產品,產品達到行業標準,錳迴收率92.10%。浸齣渣經浸齣除雜處理,鉛品位可提高到60.79%,達到三級鉛精礦要求,鉛迴收率為82.52%。
선용옥미간、목서정분、감자사화폐당밀4충유궤환원제대모전해맹양겁니진행료환원침출시험연구,병대유궤환원제침출맹양겁니적궤리진행료탐토。결과표명,재획득상동맹침출솔조건하,환원제용량배서여하:정분<옥미간<폐당밀<감자사(수해)。옥미간용량수비정분대,단기래원엄개격저,재괄의수해화침출조건하,양겁니맹침출솔가체97.01%。침출액경제잡후,정화액맹함량체40.96 g/L,맹회수솔92.29%。정화액경탄화결정가제득탄산맹산품,산품체도행업표준,맹회수솔92.10%。침출사경침출제잡처리,연품위가제고도60.79%,체도삼급연정광요구,연회수솔위82.52%。
Four kinds of organic reductants, including cornstalk, tapioca starch, bagasse and molasses were selected, respectively, for tests on reduction leaching of manganese electrowinning anode slime, and its corresponding mechanism was also investigated. Test results showed that in order to get the same leaching rate of Mn, the dosages of four reductants were in the following ascending order: tapioca starch<cornstalk<discarded molasse<bagasse. Although with more dosage than tapioca starch, cornstalk is characterized by low cost and wide availability. Using cornstalk as organic reductant, with an optimized hydrolysis and leaching conditions, the leaching rate of manganese from anode slime can reach 97.01%. Purification of the resulted leachate can produce a solution containing 40.96 g/L Mn, leading to the Mn recovery up to 92.29%. Then, carbonization of the purified solution produces MnCO3( industrial grade) with Mn recovery of 92.10%. And further removal of impurities from the reduction leaching residue can result in 82.52% Pb recovery to a third-grade Pb concentrate grading 60.79% Pb.