中国有色金属学报
中國有色金屬學報
중국유색금속학보
THE CHINESE JOURNAL OF NONFERROUS METALS
2014年
11期
2892-2899
,共8页
罗虹霖%刘维%覃文庆%刘瑞增%郑永兴%杨康%韩俊伟
囉虹霖%劉維%覃文慶%劉瑞增%鄭永興%楊康%韓俊偉
라홍림%류유%담문경%류서증%정영흥%양강%한준위
烟尘%氧化锌%铟%挥发
煙塵%氧化鋅%銦%揮髮
연진%양화자%인%휘발
fly ash%zinc oxide%indium%volatilization
针对含多种有价金属的还原挥发氧化锌烟尘,对各元素的挥发特性进行热力学平衡计算、实验室回转窑挥发和中试试验,验证铟镉铅选择性挥发效果,获得高铟物料和脱除氟氯的高锌焙砂的工艺路线。在实验室回转窑中,铟和铅的挥发率分别为93.20%和95.12%,同时,得到含锌67.36%、含氟0.013%和氯0.407%的焙砂。在中试试验中,挥发产物中铟的平均含量超过700g/t,较原料富集比超过2倍,铅的平均挥发率达到98.94%,焙砂中平均锌含量为64.16%,锌焙砂中氟和氯的含量分别降到了0.013%和0.211%,这说明从氧化锌烟尘中分离铟并获得可以满足电解锌要求的焙砂的挥发效果非常显著。
針對含多種有價金屬的還原揮髮氧化鋅煙塵,對各元素的揮髮特性進行熱力學平衡計算、實驗室迴轉窯揮髮和中試試驗,驗證銦鎘鉛選擇性揮髮效果,穫得高銦物料和脫除氟氯的高鋅焙砂的工藝路線。在實驗室迴轉窯中,銦和鉛的揮髮率分彆為93.20%和95.12%,同時,得到含鋅67.36%、含氟0.013%和氯0.407%的焙砂。在中試試驗中,揮髮產物中銦的平均含量超過700g/t,較原料富集比超過2倍,鉛的平均揮髮率達到98.94%,焙砂中平均鋅含量為64.16%,鋅焙砂中氟和氯的含量分彆降到瞭0.013%和0.211%,這說明從氧化鋅煙塵中分離銦併穫得可以滿足電解鋅要求的焙砂的揮髮效果非常顯著。
침대함다충유개금속적환원휘발양화자연진,대각원소적휘발특성진행열역학평형계산、실험실회전요휘발화중시시험,험증인력연선택성휘발효과,획득고인물료화탈제불록적고자배사적공예로선。재실험실회전요중,인화연적휘발솔분별위93.20%화95.12%,동시,득도함자67.36%、함불0.013%화록0.407%적배사。재중시시험중,휘발산물중인적평균함량초과700g/t,교원료부집비초과2배,연적평균휘발솔체도98.94%,배사중평균자함량위64.16%,자배사중불화록적함량분별강도료0.013%화0.211%,저설명종양화자연진중분리인병획득가이만족전해자요구적배사적휘발효과비상현저。
On the basis of zinc oxide fly ash bearing multiple valuable metals,thermodynamic equilibrium calculations, laboratory-scale rotary furnace volatilized experiments and pilot test concerning the volatilization of the metals Pb, Zn, In and Cd were carried out, which verified the processing route at the zinc oxide fly ash by selective volatilization of In, Cd and Pb to yield a high-In volatilized product and a high-Zn and removal fluorine and chlorine roasted product. In the laboratory-scale rotary furnace experiments, the volatilization rates of In and Pb are 93.20%and 95.12%, respectively, and the roasted product contains Zn 67.36%, F 0.013%and Cl 0.407%. In the pilot test, the volatilized product contains In more than 700 g/t, which enriches more than two times comparing with the fly ash, the volatilization rate of Pb is 98.94%, and the roasted product contains Zn 64.16%, F 0.013%and Cl 0.211%. The route have a prominent effect on separation In from zinc oxide fly ash, and the roasted product can completely meet the requirements of electrolytic zinc route.