RU97103944A - METHOD FOR HYDROMETALLURGIC CONVERSION OF ZINC SULPHIDE TO SULFATE FROM ORES AND CONCENTRATES CONTAINING ZINC SULPHIDE - Google Patents

METHOD FOR HYDROMETALLURGIC CONVERSION OF ZINC SULPHIDE TO SULFATE FROM ORES AND CONCENTRATES CONTAINING ZINC SULPHIDE

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Publication number
RU97103944A
RU97103944A RU97103944/02A RU97103944A RU97103944A RU 97103944 A RU97103944 A RU 97103944A RU 97103944/02 A RU97103944/02 A RU 97103944/02A RU 97103944 A RU97103944 A RU 97103944A RU 97103944 A RU97103944 A RU 97103944A
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RU
Russia
Prior art keywords
conversion
sulfuric acid
solution
ore
concentration
Prior art date
Application number
RU97103944/02A
Other languages
Russian (ru)
Other versions
RU2135610C1 (en
Inventor
О'Брайен Н.Роберт
Петерс Эрнест
Original Assignee
Ар энд Оу Майнинг Проусесинг Лтд.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Ар энд Оу Майнинг Проусесинг Лтд. filed Critical Ар энд Оу Майнинг Проусесинг Лтд.
Priority claimed from PCT/CA1995/000473 external-priority patent/WO1996005329A1/en
Publication of RU97103944A publication Critical patent/RU97103944A/en
Application granted granted Critical
Publication of RU2135610C1 publication Critical patent/RU2135610C1/en

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Claims (8)

1. Гидрометаллургический способ превращения сульфида цинка в руде, содержащей сульфид цинка, включающий химическое превращение сульфида цинка при высоких температурах в ZnSO4 • H2O, который кристаллируется по существу в виде моногидрата ZnSO4 • H2O в конверсионном растворе, имеющем высокую концентрацию H2SO4, усовершенствование которого состоит в: i) выборе руды, содержащей как сульфид цинка, так и сульфид меди, при этом указанная руда содержит более 1 вес.% меди, ii) контактировании указанной руды, содержащей сульфиды цинка и меди, с конверсионным раствором, имеющим концентрацию серной кислоты, выбранную в интервале от приблизительно 45 вес.% до приблизительно 70 вес. % относительно конверсионного раствора, и при повышенной температуре в интервале от 90oC до температуры ниже точки кипения конверсионного раствора для выбранной концентрации серной кислоты, iii) обеспечении в конверсионном растворе условий для восстановления посредством концентрации H2SO4, температуры и поддержания атмосферного давления с целью непрерывного образования количества H2S, достаточного для предотвращения окисления сульфида меди, iv) поддержании конверсионного раствора при указанной высокой температуре и в указанном интервале концентрации серной кислоты с целью обеспечения постоянного образования кристаллов ZnSO4 • H2O до тех пор, пока по существу весь имеющийся ZnS не подвергнется химическому превращению, и v) отделении кристаллов ZnSO4 • H2O и оставшихся твердых веществ в руде от конверсионного раствора.1. Hydrometallurgical method for the conversion of zinc sulfide in ore containing zinc sulfide, including the chemical conversion of zinc sulfide at high temperatures to ZnSO 4 • H 2 O, which crystallizes essentially in the form of ZnSO 4 • H 2 O monohydrate in a conversion solution having a high concentration H 2 SO 4 , the improvement of which consists in: i) selecting an ore containing both zinc sulfide and copper sulfide, wherein said ore contains more than 1 wt.% Copper, ii) contacting said ore containing zinc and copper sulfides with conversion m solution having a sulfuric acid concentration selected in the range from about 45 wt.% to about 70 wt. % relative to the conversion solution, and at an elevated temperature in the range of 90 o C to a temperature below the boiling point of the conversion solution for the selected concentration of sulfuric acid, iii) ensuring the conditions in the conversion solution for recovery by concentration of H 2 SO 4 , temperature and maintaining atmospheric pressure with the purpose of the continuous formation of an amount of H 2 S sufficient to prevent the oxidation of copper sulfide, iv) maintaining the conversion solution at the indicated high temperature and in the specified range at a concentration of sulfuric acid in order to ensure permanent formation of ZnSO 4 • H 2 O crystals until essentially all of the available ZnS undergoes chemical conversion, and v) separation of ZnSO 4 • H 2 O crystals and the remaining solids in the ore from the conversion solution. 2. Способ по п. 1, в котором указанная концентрация серной кислоты находится в интервале 50 - 65 вес.% относительно указанного конверсионного раствора. 2. The method according to p. 1, in which the specified concentration of sulfuric acid is in the range of 50 - 65 wt.% Relative to the specified conversion solution. 3. Способ по п. 1, в котором серную кислоту и тепло добавляют и сообщают по необходимости в указанную смесь во время химического превращения сульфида цинка с целью обеспечения непрерывного образования кристаллов. 3. The method according to p. 1, in which sulfuric acid and heat are added and reported, if necessary, in the specified mixture during the chemical conversion of zinc sulfide in order to ensure continuous formation of crystals. 4. Способ по п. 1, дополнительно включающий растворение указанных кристаллов с целью отделения ZnSO4 • H2O в гидратированном виде от твердых веществ, оставшихся в указанной руде.4. The method of claim 1, further comprising dissolving said crystals to separate ZnSO 4 • H 2 O in hydrated form from the solids remaining in said ore. 5. Способ по п. 4, в котором указанные кристаллы растворяют в растворе, имеющем низкую, концентрацию серной кислоты. 5. The method of claim 4, wherein said crystals are dissolved in a solution having a low concentration of sulfuric acid. 6. Способ по п. 5, в котором указанный раствор, имеющий низкую концентрацию серной кислоты, является электролитом из электролитной ванны для восстановления цинка. 6. The method of claim 5, wherein said solution having a low concentration of sulfuric acid is an electrolyte from an electrolyte bath for zinc reduction. 7. Способ по одному любому из пп. 1 - 6, в котором указанную руду тонко измельчают. 7. The method according to any one of paragraphs. 1 to 6, in which the specified ore is finely ground. 8. Способ по пп. 1 - 6, в которых указанная руда представляет собой концентрат. 8. The method according to PP. 1 to 6, in which the specified ore is a concentrate.
RU97103944A 1994-08-15 1995-08-09 Method of hydrometallurgical zinc sulfide-into-zinc sulfate conversion from zinc sulfide-containing ores and concentrates RU2135610C1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US29020694A 1994-08-15 1994-08-15
US08/290,206 1994-08-15
PCT/CA1995/000473 WO1996005329A1 (en) 1994-08-15 1995-08-09 Hydrometallurgical conversion of zinc sulfide to sulfate from zinc sulfide containing ores and concentrates

Publications (2)

Publication Number Publication Date
RU97103944A true RU97103944A (en) 1999-03-10
RU2135610C1 RU2135610C1 (en) 1999-08-27

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RU97103944A RU2135610C1 (en) 1994-08-15 1995-08-09 Method of hydrometallurgical zinc sulfide-into-zinc sulfate conversion from zinc sulfide-containing ores and concentrates

Country Status (16)

Country Link
US (1) US5711922A (en)
EP (1) EP0776378B1 (en)
JP (1) JPH10504060A (en)
CN (1) CN1045625C (en)
AT (1) ATE175726T1 (en)
AU (1) AU698137B2 (en)
BR (1) BR9508598A (en)
CA (1) CA2196981C (en)
CZ (1) CZ45297A3 (en)
DE (1) DE69507308T2 (en)
ES (1) ES2130630T3 (en)
FI (1) FI970628A (en)
NO (1) NO970693L (en)
PL (1) PL318754A1 (en)
RU (1) RU2135610C1 (en)
WO (1) WO1996005329A1 (en)

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