SU256264A1 - Method of autoclaving leaching of high-magnetically oxidized nickel-cobalt ores - Google Patents
Method of autoclaving leaching of high-magnetically oxidized nickel-cobalt oresInfo
- Publication number
- SU256264A1 SU256264A1 SU1047179A SU1047179A SU256264A1 SU 256264 A1 SU256264 A1 SU 256264A1 SU 1047179 A SU1047179 A SU 1047179A SU 1047179 A SU1047179 A SU 1047179A SU 256264 A1 SU256264 A1 SU 256264A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- leaching
- autoclaving
- oxidized nickel
- cobalt
- cobalt ores
- Prior art date
Links
- 238000000034 method Methods 0.000 title description 13
- 238000002386 leaching Methods 0.000 title description 7
- QXZUUHYBWMWJHK-UHFFFAOYSA-N [Co].[Ni] Chemical compound [Co].[Ni] QXZUUHYBWMWJHK-UHFFFAOYSA-N 0.000 title description 3
- 229910052760 oxygen Inorganic materials 0.000 description 6
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 6
- 229910052683 pyrite Inorganic materials 0.000 description 6
- 239000011028 pyrite Substances 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000012736 aqueous medium Substances 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 235000010269 sulphur dioxide Nutrition 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009854 hydrometallurgy Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Description
Изобретение относитс к области извлечени никел и кобальта из магнезиальных окисленных никель-кобальтовых руд методами гидрометаллургии. Известен способ автоклавного выщелачивани таких руд в водной среде с введением в пульпу выш,елачивани сернистого газа. Однако при известном способе наблюдаютс значительный расход тепловой энергии на регенерацию сернистого ангидрида и неизбежные потери его с отвальными продуктами.This invention relates to the field of the extraction of nickel and cobalt from magnesian oxidized nickel-cobalt ores by the methods of hydrometallurgy. There is a method of autoclaving leaching of such ores in an aqueous medium with the introduction into the pulp above, leaching of sulfur dioxide. However, with the known method, a significant consumption of thermal energy for the regeneration of sulfurous anhydride and its inevitable loss with waste products are observed.
Предлагаемый способ отличаетс от известного тем, что выщелачивание осуществл ют с введением в пульпу кислорода и пирита в количестве не менее ЗОо/о от веса руды. При этом достигаетс автогенность процесса.The proposed method differs from the known one in that the leaching is carried out with the introduction of oxygen and pyrite into the pulp in an amount of at least 30 ° / o from the weight of the ore. At the same time, the process is autogenous.
По данному способу руда перерабатываетс вместе с пиритом при температуре 200-270°С в атмосфере кислорода или воздуха. При этом в результате окислени пирита образуетс серна кислота, котора , в свою очередь, реагирует с рудой. Скорость процесса зависит от температуры и давлени кислорода. При определенных услови х (например, температура 250°С и давление 20 ата) врем выщелачивани сокращаетс до 1 час. При этом в раствор извлекаетс до 99% никел и кобальта. Цветные металлы, содержащиес в пирите, также |нереход т в раствор.In this method, the ore is processed with pyrite at a temperature of 200-270 ° C in an oxygen or air atmosphere. As a result of pyrite oxidation, sulfuric acid is formed, which, in turn, reacts with the ore. The speed of the process depends on the temperature and pressure of the oxygen. Under certain conditions (for example, a temperature of 250 ° C and a pressure of 20 atm), the leaching time is reduced to 1 hour. At the same time, up to 99% of nickel and cobalt are recovered in the solution. Non-ferrous metals contained in pyrite are also not dissolved.
Преимуществами предлагаемого способа вл ютс : значительна интенсификаци процесса выщелачивани ; отсутствие затрат реагентов , за исключением кислорода или воздуха отсутствие затрат тепла ввиду экзотермиче ского характера процессов окислени пирита; устойчивость нроцссса и возможность его автоматизации .The advantages of the proposed method are: a significant intensification of the leaching process; no reagent costs, with the exception of oxygen or air; no heat costs due to the exothermic nature of pyrite oxidation processes; sustainability of nootss and the possibility of its automation.
Предмет -изобретени Subject matter
Способ автоклавного выщелачивани высокомагнезиальиых окисленных никель-кобальтовых руд в водной среде, отличающийс тем, что, с целью достижени автогенности нроцесса , в иульиу ввод т пирит, в количестве не менее ЗОо/о от веса руды, и кислород.The method of autoclave leaching of highly oxidized oxidized nickel-cobalt ores in an aqueous medium, characterized in that, in order to achieve the autogenicity of the process, pyrite is introduced in an amount of not less than 30% O from the weight of the ore and oxygen.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU256264A1 true SU256264A1 (en) |
Family
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5229088A (en) * | 1992-03-06 | 1993-07-20 | Intevep, S.A. | Process for recovery of nickel and magnesium from a naturally occurring material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5229088A (en) * | 1992-03-06 | 1993-07-20 | Intevep, S.A. | Process for recovery of nickel and magnesium from a naturally occurring material |
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