SU730848A1 - Method of bacterial leaching of metals - Google Patents
Method of bacterial leaching of metals Download PDFInfo
- Publication number
- SU730848A1 SU730848A1 SU772510707A SU2510707A SU730848A1 SU 730848 A1 SU730848 A1 SU 730848A1 SU 772510707 A SU772510707 A SU 772510707A SU 2510707 A SU2510707 A SU 2510707A SU 730848 A1 SU730848 A1 SU 730848A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- leaching
- lead
- oxidation
- solutions
- rate
- Prior art date
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Description
Изобретение относится к гидрометаллургии и может использоваться для извлечения металлов из свинцово-цинковых руд. 5The invention relates to hydrometallurgy and can be used to extract metals from lead-zinc ores. 5
Известен способ бактериального выщелачивания металлов из промпродуктов флотационного обогащения свинцово-цинковых руд растворами ThiobaciEE us fer rooxidans, по которому выщелачивание проводят при температуре до 40° [1] .A known method of bacterial leaching of metals from intermediate products of flotation concentration of lead-zinc ores with ThiobaciEE us fer rooxidans solutions, in which leaching is carried out at temperatures up to 40 ° [1].
Недостатком этого способа является низкая скорость процесса выщелачивания, продолжительность которого составляет несколько суток.The disadvantage of this method is the low speed of the leaching process, the duration of which is several days.
Цель изобретения — повышение ско- 13 рости окисления галенита в промпродукте.The purpose of the invention - an increase sko- 13 growth of the oxidation of galena in the middlings.
Поставленная цель достигается тем, что процесс ведут при 60—65°С. „This goal is achieved by the fact that the process is carried out at 60-65 ° C. „
Пример. Выщелачиванию подвер-ζυ гают пенный продукт свинцовой флотации, содержащий 10% свинца и 7% цинка, преимущественно (более 90%) в сульфидной форме - галенита и сфа- 25 лерита, и до 12% углерода в виде аморфного углистого вещества, обладающего высокой адсорбирующей способностью по отношению к клеткам бактерий. Материал крупностью 200 меш. _Example. Ζυ Leachate is a foam product of lead flotation containing 10% lead and 7% zinc, mainly (more than 90%) in sulfide form - galena and spha-25 lerite, and up to 12% carbon in the form of an amorphous carbonaceous substance with a high adsorbing ability in relation to bacterial cells. 200 mesh material. _
Процесс окисления сульфидов металлов в промпродукте проводят бактериальными растворами ThiobaclCEus ferrooxidans, содержащими 20—25 г/л железа при 60—65°С. Повышение температуры до 60—65 °C осуществляют после того, как прошел этап микробиологического окисления железа в мезофильных условиях.The oxidation of metal sulfides in the intermediate product is carried out with bacterial solutions of ThiobaclCEus ferrooxidans containing 20-25 g / l of iron at 60-65 ° C. A temperature increase to 60–65 ° C is carried out after the microbiological stage of iron oxidation under mesophilic conditions has passed.
Выщелачивание проводят в аппаратах с мешалками пропеллерного типа. Количество клеток Thiobacittus ferrooxidans в растворе (без твердой фазы) уменьшается при выщелачивании промпродукта в пульпе плотностью 10% от 107 - 10s до 10-102 в 1 мл. Сульфат свинца из кеков вымывают 26—28%-ными растворами хлористого натрия при Т:Ж* 5=1:10.Leaching is carried out in apparatuses with propeller-type mixers. The number of Thiobacittus ferrooxidans cells in the solution (without solid phase) decreases when the intermediate product is leached in a pulp with a density of 10% from 10 7 - 10 s to 10-10 2 in 1 ml. Lead sulfate from cakes is washed with 26–28% sodium chloride solutions at T: W * 5 = 1: 10.
Скорость окисления галенита в промпродукте бактериальными растворами Thiobaci^us ferrooxidans имеет оптимум при 60-65°С. За 3-5 ч выщелачивания достигается 96—98% извлечения свинца и 70% извлечения цинка из промпродукта в растворы. При этом скорость окисления галенита равна скорости химического выщелачивания при 95°С и на з 730848The oxidation rate of galena in the intermediate product by bacterial solutions of Thiobaci ^ us ferrooxidans has an optimum at 60-65 ° C. For 3-5 hours of leaching, 96–98% recovery of lead and 70% recovery of zinc from the intermediate in solutions is achieved. The rate of oxidation of galena is equal to the rate of chemical leaching at 95 ° C and on z 730848
20% выше по сравнению с бактериальны* выщелачиванием при 35° С.20% higher compared to bacterial * leaching at 35 ° C.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU772510707A SU730848A1 (en) | 1977-07-15 | 1977-07-15 | Method of bacterial leaching of metals |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU772510707A SU730848A1 (en) | 1977-07-15 | 1977-07-15 | Method of bacterial leaching of metals |
Publications (1)
Publication Number | Publication Date |
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SU730848A1 true SU730848A1 (en) | 1980-04-30 |
Family
ID=20719298
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU772510707A SU730848A1 (en) | 1977-07-15 | 1977-07-15 | Method of bacterial leaching of metals |
Country Status (1)
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SU (1) | SU730848A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001018266A1 (en) * | 1999-09-07 | 2001-03-15 | Billiton Intellectual Property B.V. | Recovery of zinc from zinc bearing sulphide minerals by bioleaching and electrowinning |
-
1977
- 1977-07-15 SU SU772510707A patent/SU730848A1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001018266A1 (en) * | 1999-09-07 | 2001-03-15 | Billiton Intellectual Property B.V. | Recovery of zinc from zinc bearing sulphide minerals by bioleaching and electrowinning |
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