Recovery of Lead from Sulfide Concentrate after Mechanochemical Activation Using Nitric Acid

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Recovery of Lead from Sulfide Concentrate after Mechanochemical Activation Using Nitric Acid

A.G.Kholmogorov^a; O.N.Kononova^b; G.L.Pashkov^a; L.V.Shashina^a; V.P.Plekhanov^a; A.A.Sabetskiy^b

a Institute of Chemistry and Chemical Technology, Siberian Department of the Academy of Science, KarlMarxPr., 42, 660049 Krasnoyarsk, Russia
b Department of Chemistry, Krasnoyarsk State University, Svobodny Pr., 79, 660041 Krasnoyarsk, Russia

Received:1900-01-01 Revised:1900-01-01 Online:2005-02-28 Published:2005-02-28
Contact: A.G.Kholmogorov

利用硝酸回收机械化学活化后的硫化物浓缩液中的铅

A.G.Kholmogorov^a; O.N.Kononova^b; G.L.Pashkov^a; L.V.Shashina^a; V.P.Plekhanov^a; A.A.Sabetskiyb

^a Institute of Chemistry and Chemical Technology, Siberian Department of the Academy of Science, KarlMarxPr., 42, 660049 Krasnoyarsk, Russia
^b Department of Chemistry, Krasnoyarsk State University, Svobodny Pr., 79, 660041 Krasnoyarsk, Russia

通讯作者: A.G.Kholmogorov

Abstract

Abstract: Decomposition of lead sulfide concentrates in nitric acidic solutions after ferric (Ⅲ) nitrate addition and mechanical preparation has been investigated. It was found out that the decomposition can be achieved in HNO3 solution (>1.5 mol·L^-1) at the temperature above 85℃. The leaching rate of lead can be increased by means of mechanochemical activation. The use of [Fe(NO3)3-HNO3-H2O] aqueous salt system allows the decomposition of lead sulfide concentrate at room temperature and in this case the concentration of HNO3 does not exceed 0.05-0.1 mol.L^-1, The degree of lead recovery into solution from PbS concentrate reaches 99.3%-99.6c70 with the mechanochemical activation of this concentrate. The insoluble residues after the leaching contain SiO2, S^0, FeCO3 and PbSO4.

Key words: lead, sulfide concentrates, nitric acidic solutions, mechanochemical activation

摘要： Decomposition of lead sulfide concentrates in nitric acidic solutions after ferric (Ⅲ) nitrate addition and mechanical preparation has been investigated. It was found out that the decomposition can be achieved in HNO3 solution (>1.5 mol·L^-1) at the temperature above 85℃. The leaching rate of lead can be increased by means of mechanochemical activation. The use of [Fe(NO3)3-HNO3-H2O] aqueous salt system allows the decomposition of lead sulfide concentrate at room temperature and in this case the concentration of HNO3 does not exceed 0.05-0.1 mol.L^-1, The degree of lead recovery into solution from PbS concentrate reaches 99.3%-99.6c70 with the mechanochemical activation of this concentrate. The insoluble residues after the leaching contain SiO2, S^0, FeCO3 and PbSO4.

关键词: 硫化物;活化作用;机械化学;硝酸;浓缩技术;铅;湿法冶金技术

A.G.Kholmogorov,O.N.Kononova,G.L.Pashkov,L.V.Shashina,V.P.Plekhanov,A.A.Sabetskiy. Recovery of Lead from Sulfide Concentrate after Mechanochemical Activation Using Nitric Acid[J]. .

A.G.Kholmogorov,O.N.Kononova,G.L.Pashkov,L.V.Shashina,V.P.Plekhanov,A.A.Sabetskiyb. 利用硝酸回收机械化学活化后的硫化物浓缩液中的铅[J]. CIESC Journal.

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