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RU98100309A - METAL EXTRACTION METHOD - Google Patents

METAL EXTRACTION METHOD

Info

Publication number
RU98100309A
RU98100309A RU98100309/02A RU98100309A RU98100309A RU 98100309 A RU98100309 A RU 98100309A RU 98100309/02 A RU98100309/02 A RU 98100309/02A RU 98100309 A RU98100309 A RU 98100309A RU 98100309 A RU98100309 A RU 98100309A
Authority
RU
Russia
Prior art keywords
under pressure
sulfur
solution
raffinate
oxidation
Prior art date
Application number
RU98100309/02A
Other languages
Russian (ru)
Other versions
RU2179192C2 (en
Inventor
Дэвид Л. Джоунс
Original Assignee
Коминко Енджиниэринг Сэвисиз Элтиди
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.)
Filing date
Publication date
Priority claimed from US08/488,128 external-priority patent/US5650057A/en
Application filed by Коминко Енджиниэринг Сэвисиз Элтиди filed Critical Коминко Енджиниэринг Сэвисиз Элтиди
Publication of RU98100309A publication Critical patent/RU98100309A/en
Application granted granted Critical
Publication of RU2179192C2 publication Critical patent/RU2179192C2/en

Links

Claims (24)

1. Способ извлечения металла, в частности извлечения меди из сульфидной медной руды или концентрата, в котором сначала окисляют руду или концентрат вместе с источником ионов бисульфата или сульфата под давлением при температуре от 115°С до 160°С в присутствии кислорода и кислого раствора, содержащего ионы галогенида, с получением суспензии продукта окисления под давлением, затем разделяют полученную суспензию на жидкую и твердую фазы с получением раствора продукта окисления под давлением и твердого остатка, после чего извлекают медь из раствора продукта окисления под давлением или из твердого остатка, отличающийся тем, что раствор продукта окисления под давлением рециркулируют на стадию окисления под давлением, а содержание меди в рециркулируемом растворе продукта окисления под давлением поддерживают на заданном значении.1. A method for the extraction of metal, in particular the extraction of copper from sulfide copper ore or concentrate, in which the ore or concentrate is first oxidized together with a source of bisulfate or sulfate ions under pressure at a temperature of from 115 ° C to 160 ° C in the presence of oxygen and an acidic solution, containing halide ions, to obtain a suspension of the oxidation product under pressure, then divide the suspension into liquid and solid phases to obtain a solution of the oxidation product under pressure and a solid residue, after which copper is recovered from solution of the oxidation product under pressure or from a solid residue, characterized in that the solution of the oxidation product under pressure is recycled to the stage of oxidation under pressure, and the copper content in the recycled solution of the oxidation product under pressure is maintained at a predetermined value. 2. Способ по п. 1, отличающийся тем, что содержание меди в рециркулируемом растворе продукта окисления под давлением поддерживают в пределах диапазона значений от 10 до 15 г/л. 2. The method according to p. 1, characterized in that the copper content in the recycled solution of the oxidation product under pressure is maintained within the range of values from 10 to 15 g / l. 3. Способ по п. 1, отличающийся тем, что содержание меди в рециркулируемом растворе продукта окисления под давлением регулируют путем экстракции меди растворителем из этого раствора, проводимой перед рециркуляцией, с получением медного раствора и кислого рафината, и рециркуляции этого рафината. 3. The method according to p. 1, characterized in that the copper content in the recycled solution of the oxidation product under pressure is controlled by extracting copper with a solvent from this solution, carried out before recirculation, to obtain a copper solution and acid raffinate, and recycling this raffinate. 4. Способ по п. 3, отличающийся тем, что перед рециркуляцией рафината дополнительно частично нейтрализуют, по меньшей мере, некоторую часть рафината для снижения содержания ионов водорода в рафинате. 4. The method according to p. 3, characterized in that before recycling the raffinate, at least some of the raffinate is additionally partially neutralized to reduce the content of hydrogen ions in the raffinate. 5. Способ по п. 4, отличающийся тем, что для частичной нейтрализации используют известняк. 5. The method according to p. 4, characterized in that limestone is used for partial neutralization. 6. Способ по п. 4 или 5, отличающийся тем, что содержание меди в растворе продукта окисления под давлением регулируют путем регулирования содержания ионов водорода в рециркулируемом рафинате посредством частичной нейтрализации рафината. 6. The method according to p. 4 or 5, characterized in that the copper content in the solution of the oxidation product under pressure is controlled by controlling the content of hydrogen ions in the recycled raffinate by partially neutralizing the raffinate. 7. Способ по п. 1, отличающийся тем, что окисление под давлением проводят в присутствии поверхностно-активного вещества. 7. The method according to p. 1, characterized in that the oxidation under pressure is carried out in the presence of a surfactant. 8. Способ по п. 1, отличающийся тем, что на стадии окисления под давлением дополнительно уменьшают вязкость жидкой серы путем введения на стадию окисления под давлением поверхностно-активного вещества. 8. The method according to p. 1, characterized in that at the stage of oxidation under pressure, the viscosity of liquid sulfur is further reduced by introducing a surfactant into the stage of oxidation under pressure. 9. Способ по п. 8, отличающийся тем, что поверхностно-активное вещество вводят в раствор продукта окисления под давлением, рециркулируемый на стадию окисления под давлением. 9. The method according to p. 8, characterized in that the surfactant is introduced into the solution of the oxidation product under pressure, recycled to the stage of oxidation under pressure. 10. Способ по п. 9, отличающийся тем, что поверхностно-активное вещество добавляют в концентрации от 0,1 до 3 г/л. 10. The method according to p. 9, characterized in that the surfactant is added in a concentration of from 0.1 to 3 g / L. 11. Способ по пп. 7- 10, отличающийся тем, что поверхностно-активное вещество выбирают из сульфоната лигнина, квебрахо или их производных. 11. The method according to PP. 7-10, characterized in that the surfactant is selected from lignin sulfonate, quebracho or their derivatives. 12. Способ по п. 1, отличающийся тем, что галогенидом является хлорид или бромид. 12. The method according to p. 1, characterized in that the halide is chloride or bromide. 13. Способ по п. 12, отличающийся тем, что галогенидом является хлорид, а содержание ионов хлорида в кислом растворе составляет около 12 г/л. 13. The method according to p. 12, characterized in that the halide is chloride, and the content of chloride ions in the acidic solution is about 12 g / L. 14. Способ по п. 3, отличающийся тем, что при обработке руды или концентрата, содержащих вместе с медью цинк, дополнительно проводят экстракцию цинка экстрагентом цинка из рафината от экстракции меди, проводимую перед рециркуляцией этого рафината, с получением концентрированного цинкового раствора, пригодного для электрохимического извлечения. 14. The method according to p. 3, characterized in that when processing an ore or concentrate containing zinc together with copper, zinc is additionally extracted with zinc extractant from the raffinate from copper extraction, carried out before recirculation of this raffinate, to obtain a concentrated zinc solution suitable for electrochemical extraction. 15. Способ по п. 14, отличающийся тем, что перед экстракцией цинка растворителем он дополнительно нейтрализуют рафинат. 15. The method according to p. 14, characterized in that before the extraction of zinc with a solvent, it further neutralizes the raffinate. 16. Способ по пп.1-15, отличающийся тем, что при обработке руды или концентрата, содержащих также благородные металлы, дополнительно удаляют элементарную серу из твердого остатка от окисления под давлением, с получением остатка с низким содержанием элементарной серы, затем проводят окислительное выщелачивание остатка с низким содержанием элементарной серы для окисления элементарной серы и сульфидных минералов, присутствующих в остатке с низким содержанием серы, с получением остатка, пригодного для извлечения из него благородных металлов. 16. The method according to claims 1-15, characterized in that when processing ore or concentrate also containing precious metals, elementary sulfur is additionally removed from the solid residue from oxidation under pressure to obtain a residue with a low content of elemental sulfur, then oxidative leaching is carried out a low elemental sulfur content residue for oxidizing elemental sulfur and sulfide minerals present in the low sulfur content residue to obtain a residue suitable for recovering precious metals from it. 17. Способ по п. 16, отличающийся тем, что удаление серы проводят пенной флотацией твердого остатка от окисления под давлением, с получением богатого флотационного серного концентрата и обедненных по сере флотационных хвостов, последующей экстракцией серы из флотационного концентрата подходящим экстрагентом, с получением остатка с низким содержанием элементарной серы. 17. The method according to p. 16, characterized in that the sulfur is removed by foam flotation of the solid residue from oxidation under pressure, to obtain rich flotation sulfur concentrate and sulfur-depleted flotation tailings, followed by extraction of sulfur from flotation concentrate with a suitable extractant, to obtain a residue with low elemental sulfur content. 18. Способ по п. 17, отличающийся тем, что обедненные по сере флотационные хвосты разделяют на жидкую и твердую фазы с получением жидкости, которую рециркулируют на пенную флотацию, и твердой фазы, которую подвергают окислительному выщелачиванию. 18. The method according to p. 17, characterized in that the sulfur-depleted flotation tails are separated into liquid and solid phases to obtain a liquid that is recycled to foam flotation, and a solid phase, which is subjected to oxidative leaching. 19. Способ по п. 17, отличающийся тем, что извлечение серы из флотационного концентрата проводят при температуре 90-150oС.19. The method according to p. 17, characterized in that the extraction of sulfur from the flotation concentrate is carried out at a temperature of 90-150 o C. 20. Способ по п. 19, отличающийся тем, что экстрагент серы выбирают из группы, содержащей керосин и тетрахлорэтилен. 20. The method according to p. 19, characterized in that the sulfur extractant is selected from the group consisting of kerosene and tetrachlorethylene. 21. Способ по п. 16, отличающийся тем, что окислительное выщелачивание проводят в кислых условиях при температуре 200-220°С и парциальном давлении кислорода 500-1200 кПа. 21. The method according to p. 16, characterized in that the oxidative leaching is carried out under acidic conditions at a temperature of 200-220 ° C and a partial oxygen pressure of 500-1200 kPa. 22. Способ по п. 16, отличающийся тем, что перед удалением серы суспензию продукта окисления под давлением выпускают в две стадии со стадии окисления под давлением с понижением давления до атмосферного, при этом температура первой стадии выпуска превышает точку затвердевания элементарной серы. 22. The method according to p. 16, characterized in that before the removal of sulfur, the suspension of the oxidation product under pressure is released in two stages from the oxidation stage under pressure with a decrease in pressure to atmospheric pressure, while the temperature of the first release stage exceeds the solidification point of elemental sulfur. 23. Способ по п. 22, отличающийся тем, что первую стадию выпуска проводят при температуре 120 - 130°С и давлении пара 170 - 240 кПа. 23. The method according to p. 22, characterized in that the first stage of release is carried out at a temperature of 120 - 130 ° C and a vapor pressure of 170 - 240 kPa. 24. Способ по п. 22 или 23, отличающийся тем, что вторую стадию выпуска проводят при температуре 90 - 100°С и атмосферном давлении. 24. The method according to p. 22 or 23, characterized in that the second stage of release is carried out at a temperature of 90-100 ° C and atmospheric pressure.
RU98100309A 1995-06-07 1996-01-19 Method of extraction of metal RU2179192C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/488,128 1995-06-07
US08/488,128 US5650057A (en) 1993-07-29 1995-06-07 Chloride assisted hydrometallurgical extraction of metal

Publications (2)

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RU98100309A true RU98100309A (en) 1999-10-27
RU2179192C2 RU2179192C2 (en) 2002-02-10

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RU98100436A RU2178007C2 (en) 1995-06-07 1996-01-04 Method of recovering nickel and/or cobalt from ore or concentrate
RU98100309A RU2179192C2 (en) 1995-06-07 1996-01-19 Method of extraction of metal
RU98100271A RU2174562C2 (en) 1995-06-07 1996-06-07 Nickel and/or cobalt recovery method (options)

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RU98100436A RU2178007C2 (en) 1995-06-07 1996-01-04 Method of recovering nickel and/or cobalt from ore or concentrate

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RU98100271A RU2174562C2 (en) 1995-06-07 1996-06-07 Nickel and/or cobalt recovery method (options)

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US (1) US5650057A (en)
EP (5) EP0832302B1 (en)
JP (3) JP4180655B2 (en)
KR (1) KR100426231B1 (en)
CN (3) CN1057344C (en)
AU (3) AU694960C (en)
BG (3) BG62180B1 (en)
BR (3) BR9608624A (en)
CA (6) CA2456772A1 (en)
DE (5) DE69610208T2 (en)
DK (3) DK0832302T3 (en)
ES (3) ES2153950T3 (en)
FI (2) FI116145B (en)
GT (2) GT199600014A (en)
NO (1) NO975707D0 (en)
OA (1) OA10643A (en)
PE (2) PE30096A1 (en)
PL (3) PL323593A1 (en)
RU (3) RU2178007C2 (en)
TR (5) TR199701570T1 (en)
TW (2) TW408186B (en)
WO (3) WO1996041026A1 (en)
ZA (1) ZA964866B (en)

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