某低品位伴生银铅锌多金属矿选矿工艺试验研究
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摘要
针对某低品位伴生银铅锌多金属硫化矿选别指标低、药剂制度不合理等问题,在分析原矿组成和矿石性质配矿的基础上,开展了一系列实验室选矿条件试验,确定了抑锌浮铅的优先浮选流程。将丁铵黑药和丁基黄药按照1∶1的配比组成组合药剂作为铅的捕收剂,Na_2S为硫诱导剂,CaO和Na_2CO_3为黄铁矿及磁铁矿的抑制剂,ZnSO_4和CuSO_4分别为锌的抑制剂及活化剂,丁基黄药为锌的捕收剂。通过两粗三精三扫的浮选闭路试验,可获得铅精矿铅品位为60.29%,回收率为92.02%,其中含银826.13×10~(-6),银的回收率为72.75%;锌精矿锌品位为48.32%,回收率为92.30%,其中含银61.71×10~(-6),银的回收率为19.19%,说明该工艺浮选指标良好,对此类矿石的选别具有指导意义。
A low grade polymetallic lead-zinc ore with associated silver has the problems of low selective indicators and unreasonable pharmacy system. Based on a series of condition experiments of mineral processing after analyzing composition and ore properties of raw ore and ore proportioning,preferential flotation process of zinc floating lead was determined. The lead mine were successfully separated from lead-zinc mineral under the conditions of that the collector was the combined reagent which with 1∶1 ratio of the ammonium dibutyl dithiophosphate and butyl xanthate,sodium sulfide as the sulfur inducer,lime and sodium carbonate as inhibitors of pyrite and magnetite. Zinc sulfate and copper sulfate are used as inhibitors and activators of zinc respectively.Under the conditions of two roughing,three scavenging,three cleaning of closed-circuit experiments,lead concentrate with lead grade of 60.29%,silver grade of 826.13 × 10~(-6) and lead recovery rate of 92.02%,silver recovery rate of 72.75% was obtained. The zinc concentrate with zinc grade of 48.32%,silver 61.71 × 10~(-6),zinc recovery rate of 92.30%,silver recovery rate of 19.19% also was obtained. It shows that the process has good flotation index and it can be instructive for the selection of such kind of ores.
A low grade polymetallic lead-zinc ore with associated silver has the problems of low selective indicators and unreasonable pharmacy system. Based on a series of condition experiments of mineral processing after analyzing composition and ore properties of raw ore and ore proportioning,preferential flotation process of zinc floating lead was determined. The lead mine were successfully separated from lead-zinc mineral under the conditions of that the collector was the combined reagent which with 1∶1 ratio of the ammonium dibutyl dithiophosphate and butyl xanthate,sodium sulfide as the sulfur inducer,lime and sodium carbonate as inhibitors of pyrite and magnetite. Zinc sulfate and copper sulfate are used as inhibitors and activators of zinc respectively.Under the conditions of two roughing,three scavenging,three cleaning of closed-circuit experiments,lead concentrate with lead grade of 60.29%,silver grade of 826.13 × 10~(-6) and lead recovery rate of 92.02%,silver recovery rate of 72.75% was obtained. The zinc concentrate with zinc grade of 48.32%,silver 61.71 × 10~(-6),zinc recovery rate of 92.30%,silver recovery rate of 19.19% also was obtained. It shows that the process has good flotation index and it can be instructive for the selection of such kind of ores.
引文
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[17]罗仙平,严群,谢明辉,等.某氧化铅锌矿浮选工艺试验研究[J].有色金属(选矿部分),2005(1):7-10.Luo Xianping,Yan Qun,Xie Minghui,et al.Experiment study of flotation process of lead-zinc oxide ore[J].Nonferrous Metals(Mineral Processing Section),2005(1):7-10.
[2]余新阳,王浩林,王强强,等.江西某伴生银难选铅锌矿浮选分离[J].有色金属工程,2016,6(5):49-54.Yu Xinyang,Wang Haolin,Wang Qiangqiang,et al.Flotation separation of a lead-zinc ore with associated silver from Jiangxi[J].Nonferrous Metals,2016,6(5):49-54.
[3]徐寒冰,李茂林,黄业豪.广东某铅锌矿工艺矿物学研究[J].矿产综合利用,2017,38(1):76-80.Xu Hanbing,Li Maolin,Huang Yehao.Study on process mineralogy analysis of certain lead-zinc ore in Guangdong[J].Multipurpose Utilization of Mineral Resources,2017,38(1):76-80.
[4]焦科诚.贵州某铅锌矿选矿试验研究[J].湖南有色金属,2017,33(1):23-26.Jiao Kecheng.Experiment research on a certain leadzinc mine in Guizhou[J].Hunan Nonferrous Metals,2017,33(1):23-26.
[5]韦晶晶.碳酸钠、硫酸锌混合溶液在铅锌分离浮选中的研究与应用[J].南方国土资源,2004(11):106-107.Wei Jingjing.Sodium carbonate mixed with zinc sulfate solution research and application of lead and zinc separation flotation[J].Land and Resources of Southern China,2004(11):106-107.
[6]冯博,朱贤文,彭金秀,等.有色金属硫化矿中伴生金银资源回收研究进展[J].贵金属,2016,37(2):70-76.Feng Bo,Zhu Xianwen,Peng Jinxiu,et al.Research progress in recovering associated gold and silver from nonferrous metal sulfide ores[J].Precious Metals,2016,37(2):70-76.
[7]王春光.云南某铅锌矿伴生银的综合回收研究[J].中国矿业,2017,26(4):131-134.Wang Chunguang.Comprehensive recovery of associated silver from a lead-zinc ore in Yunnan Province[J].China Mining Magazine,2017,26(4):131-134.
[8]胡元,钟宏,王帅,等.铅锌矿的浮选工艺和浮选药剂研究进展[J].河南化工,2013,30(7):21-24.Hu Yuan,Zhong Hong,Wang Shuai,et al.Research progress of lead-zinc ore flotation and its collectors[J].Henan Chemical Industry,2013,30(7):21-24.
[9]王伊杰,文书明,刘建,等.铅锌分离中锌矿物的抑制剂和活化剂及作用机理[J].矿冶,2012,21(4):21-25.Wang Yijie,Wen Shuming,Liu Jian,et al.Introduction of zinc depressants and activators and their function mechanism in lead-zinc separation[J].Mining and Metallurgy,2012,21(4):21-25.
[10]贺翔.宝山铅锌银多金属矿工艺流程改造与生产实践[J].湖南有色金属,2015,31(3):21-25.He Xiang.Beneficiation processing flow sheet optimization and practice of multi metallic lead-zinc-silver ore[J].Hunan Nonferrous Metals,2015,31(3):21-25.
[11]罗仙平,周贺鹏,周跃,等.提高某复杂铅锌矿伴生银选矿指标新工艺研究[J].矿冶工程,2011,31(3):35-39.Luo Xianping,Zhou Hepeng,Zhou Yue,et al.New technique to improve dressing indexes of associated silver in complex lead-zinc ore[J].Mining and Metallurgical Engineering,2011,31(3):35-39.
[12]孙水裕,刘如意.电位调控浮选技术选别南京铅锌银矿的实验室研究和生产实践[J].广东工业大学学报,2000,17(3):1-5.Sun Shuiyu,Liu Ruyi.A study on potenti-controlled flotation technology and its application in Nanjing leadzinc-silver mine[J].Journal of Guangdong University of Technology,2000,17(3):1-5.
[13]郭才虞.硫化钠在浮选中的作用机理[J].云南冶金,1981,9(3):20-26.Guo Caiyu.The mechanism of sodium sulfide in flotation[J].Yunnan Metallurgy,1981,9(3):20-26.
[14]田学达,李隆峰.硫化钠在硫化矿浮选分离中的作用[J].湖南有色金属,1995,11(1):29-31.Tian Xueda,Li Longfeng.The role of sodium sulfide in flotation separation of sulfide ore[J].Hunan Nonferrous Metals,1995,11(1):29-31.
[15]孟克礼,杨瑞瑛.硫酸锌在多金属硫化矿分选中的应用[J].有色金属(选矿部分),1986(5):13-18.Meng Keli,Yang Ruiying.Application of ainc sulfate in separation of multi-metal sulfide ore[J].Nonferrous Metals(Mineral Processing Section),1986(5):13-18.
[16]韦晶晶.石灰、纯碱在铅锌矿浮选中的应用[J].南方国土资源,2017,34(1):27-28.Wei Jingjing.Application of lime and soda ash in flotation of lead-zinc[J].Land and Resources of Southern China,2017,34(1):27-28.
[17]罗仙平,严群,谢明辉,等.某氧化铅锌矿浮选工艺试验研究[J].有色金属(选矿部分),2005(1):7-10.Luo Xianping,Yan Qun,Xie Minghui,et al.Experiment study of flotation process of lead-zinc oxide ore[J].Nonferrous Metals(Mineral Processing Section),2005(1):7-10.