CN110295289A - Method for gold separation by cyaniding and leaching of gold ore - Google Patents
Method for gold separation by cyaniding and leaching of gold ore Download PDFInfo
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- CN110295289A CN110295289A CN201910452994.3A CN201910452994A CN110295289A CN 110295289 A CN110295289 A CN 110295289A CN 201910452994 A CN201910452994 A CN 201910452994A CN 110295289 A CN110295289 A CN 110295289A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B11/00—Obtaining noble metals
- C22B11/08—Obtaining noble metals by cyaniding
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Abstract
The invention discloses a gold-separating method by cyaniding, leaching and gold-separating of gold ore, which comprises the steps of ore grinding, raw ore cyclone classification, regrinding and reasonable configuration, wherein the raw ore cyclone is adopted to classify two types of coarse fraction raw ore (+ 0.090 mm) and fine fraction raw ore (-0.090 mm). The coarse fraction raw ore is reground and then combined with the fine fraction raw ore to be subjected to cyaniding leaching test, so that the gold recovery is realized. And lime and cyanide are mixed and stirred to carry out a cyanide leaching test process, so that the gold leaching rate reaches 91.14-93.70%. The beneficiation method is simple in process and easy to operate on site.
Description
Technical field
The present invention relates to a kind of beneficiation method, in particular to a kind of gold mine cyaniding leaches the golden method of choosing.
Background technique
General gold mine cyaniding leaches choosing gold under certain grinding fineness, recycles gold mineral using direct cyaniding.Direct cyanogen
Change to leach to recycle and on the one hand causes the relatively thick gold loss of a small amount of granularity, it is direct additionally, due to the presence such as raw ore needs of coarse grain diameter gold
More difficult recycling after fine grinding causes higher cost part mustard gold to refine, affects golden recycling.
Summary of the invention
The purpose of the present invention is to provide a kind of methods that gold mine cyaniding leaches choosing gold, to solve traditional Cyanide Leaching choosing
The problem of gold mineral is recycled using direct Cyanide Leaching in gold process, affects gold recycling.
Technical solution of the present invention: a kind of method that gold mine cyaniding leaches choosing gold comprises the steps of:
(1) ore grinding: carrying out ore grinding to raw ore, and adding water to size mixing to concentration is 30~40%(mass concentration).Preferably, by raw ore
It is milled to the mass ratio 70% that fineness is -0.090mm grade；
(2) cyclone classification: raw ore is used into cyclone classification, is classified as coarse fraction raw ore (+0.090mm) and fine fraction raw ore
Two kinds of (- 0.090mm), coarse fraction raw ore is regrinded；
(3) it regrinds: coarse fraction raw ore is regrinded, rear raw ore will be regrinded and be milled to the mass ratio that fineness is -0.090mm grade
100%, the raw ore after regrinding carries out Cyanide Leaching test after merging with fine fraction raw ore.Device therefor includes ball mill when ore grinding,
Grinding machine again.
(4) Cyanide Leaching test: the raw ore after regrinding merge with fine fraction raw ore after ore pulp in sequentially add lime, cyanogen
Compound size mixing stirring under conditions of carry out Cyanide Leaching test.Additive amount is based on raw ore per ton, 3000~5000 g/t of lime, cyanogen
500~800 g/t of compound, leaching cycle are 24~36 hours, and leaching concentration is 30~40%(mass concentration), after washing three times
It obtains and your liquid and leached mud is leached；
The invention has the advantages that (1) this method passes through ore grinding, regrinds, raw ore cyclone classification reasonable disposition, raw ore is used first
Cyclone classification goes out coarse fraction raw ore (+0.090mm) and two kinds of fine fraction raw ore (- 0.090mm).Coarse fraction raw ore is carried out again
Cyanide Leaching test is carried out after merging after mill with fine fraction raw ore realizes the recycling of gold；(2) size mixing and stir using lime, cyanide
It mixes and carries out Cyanide Leaching test process, improve gold leaching rate；(3) the beneficiation method process flow result is simple, and scene is easy to pipe
Reason operation, beneficiation cost is lower, and mineral processing index is preferable.Gold leaching rate reaches 91.14~93.70%.
Detailed description of the invention
Fig. 1 is flow chart of the invention.
Specific embodiment
In order to better understand the present invention, below with reference to the embodiment content that the present invention is furture elucidated, but it is of the invention
Content is not limited solely to embodiment.
Following embodiment selects certain gold mine sample, and major metal mineral are less in ore, is sampled, is divided to representative sample ore
Analysis, Cu:0.12%, Pb:0.23%, Zn:0.25%, S:0.5%, Au:3.65 g ton.
Lime, cyanide is added in embodiment 1-4 to size mixing stirring, under conditions of control mixing time and pulp density into
The test of row Cyanide Leaching.For additive amount based on raw ore per ton, actual conditions and dosing are shown in Table 1.
Embodiment 1
(1) ore grinding: carrying out ore grinding to raw ore, and raw ore is milled to the mass ratio 70% that fineness is -0.090mm grade；
(2) cyclone classification: raw ore is used into cyclone classification, is classified as coarse fraction raw ore (+0.090mm) and fine fraction raw ore
Two kinds of (- 0.090mm), coarse fraction raw ore is regrinded；
(3) it regrinds: coarse fraction raw ore is regrinded, rear raw ore will be regrinded and be milled to the mass ratio that fineness is -0.090mm grade
100%, the raw ore after regrinding carries out Cyanide Leaching test after merging with fine fraction raw ore；
(4) Cyanide Leaching test: the raw ore after regrinding merge with fine fraction raw ore after ore pulp in sequentially add lime, cyanide
It sizes mixing and carries out Cyanide Leaching test under conditions of stirring.Additive amount is based on raw ore per ton, 3000 g/t of lime, 500 g/ of Cymag
T, leaching cycle are 24 hours, and leaching concentration 30%, washing obtains your liquid and leached mud leached three times afterwards.
Embodiment 2
(1) ore grinding: carrying out ore grinding to raw ore, and raw ore is milled to the mass ratio 70% that fineness is -0.090mm grade；
(2) cyclone classification: raw ore is used into cyclone classification, is classified as coarse fraction raw ore (+0.090mm) and fine fraction raw ore
Two kinds of (- 0.090mm), coarse fraction raw ore is regrinded；
(3) it regrinds: coarse fraction raw ore is regrinded, rear raw ore will be regrinded and be milled to the mass ratio that fineness is -0.090mm grade
100%, the raw ore after regrinding carries out Cyanide Leaching test after merging with fine fraction raw ore；
(4) Cyanide Leaching test: the raw ore after regrinding merge with fine fraction raw ore after ore pulp in sequentially add lime, cyanide
It sizes mixing and carries out Cyanide Leaching test under conditions of stirring.Additive amount is based on raw ore per ton, 3500 g/t of lime, 600 g/ of Cymag
T, leaching cycle are 27 hours, and leaching concentration 33%, washing obtains your liquid and leached mud leached three times afterwards.
Embodiment 3
(1) ore grinding: carrying out ore grinding to raw ore, and raw ore is milled to the mass ratio 70% that fineness is -0.090mm grade；
(2) cyclone classification: raw ore is used into cyclone classification, is classified as coarse fraction raw ore (+0.090mm) and fine fraction raw ore
Two kinds of (- 0.090mm), coarse fraction raw ore is regrinded；
(3) it regrinds: coarse fraction raw ore is regrinded, rear raw ore will be regrinded and be milled to the mass ratio that fineness is -0.090mm grade
100%, the raw ore after regrinding carries out Cyanide Leaching test after merging with fine fraction raw ore；
(4) Cyanide Leaching test: the raw ore after regrinding merge with fine fraction raw ore after ore pulp in sequentially add lime, cyanide
It sizes mixing and carries out Cyanide Leaching test under conditions of stirring.Additive amount is based on raw ore per ton, 4000 g/t of lime, 700 g/ of Cymag
T, leaching cycle are 30 hours, and leaching concentration 35%, washing obtains your liquid and leached mud leached three times afterwards.
Embodiment 4
(1) ore grinding: carrying out ore grinding to raw ore, and raw ore is milled to the mass ratio 70% that fineness is -0.090mm grade；
(2) cyclone classification: raw ore is used into cyclone classification, is classified as coarse fraction raw ore (+0.090mm) and fine fraction raw ore
Two kinds of (- 0.090mm), coarse fraction raw ore is regrinded；
(3) it regrinds: coarse fraction raw ore is regrinded, rear raw ore will be regrinded and be milled to the mass ratio that fineness is -0.090mm grade
100%, the raw ore after regrinding carries out Cyanide Leaching test after merging with fine fraction raw ore；
(4) Cyanide Leaching test: the raw ore after regrinding merge with fine fraction raw ore after ore pulp in sequentially add lime, cyanide
It sizes mixing and carries out Cyanide Leaching test under conditions of stirring.Additive amount is based on raw ore per ton, 5000 g/t of lime, 800 g/ of Cymag
T, leaching cycle are 36 hours, and leaching concentration 40%, washing obtains your liquid and leached mud leached three times afterwards.
Lime, cyanide are added in above step.
The test result of embodiment 1-4 is shown in Table 2, the results show that Cyanide Leaching test gold leaching rate reaches 90~96%.
1 embodiment 1-4 actual conditions of table and dosing/(g/t raw ore)
。
2 embodiment Cyanide Leaching test result of table
。
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Any modification, equivalent replacement, improvement and so within principle, should all be included in the protection scope of the present invention.
Claims (3)
1. a kind of method that gold mine cyaniding leaches choosing gold, it is characterised in that comprise the steps of:
(1) ore grinding: carrying out ore grinding to raw ore, and raw ore is milled to 70% or more the mass ratio that fineness is -0.090mm grade；
(2) cyclone classification: using cyclone classification for raw ore, is classified as the coarse fraction raw ore of+0.090mm with -0.090mm's
Two kinds of fine fraction raw ore, coarse fraction raw ore is regrinded；
(3) it regrinds: coarse fraction raw ore is regrinded, rear raw ore will be regrinded and be milled to the mass ratio that fineness is -0.090mm grade
100%, the raw ore after regrinding carries out Cyanide Leaching test after merging with fine fraction raw ore；
(4) Cyanide Leaching test: the raw ore after regrinding merge with fine fraction raw ore after ore pulp in sequentially add lime, cyanide
It sizes mixing and carries out Cyanide Leaching test under conditions of stirring, additive amount is based on raw ore per ton, 3000~5000 g/t of lime, cyanide
500~800 g/t, leaching cycle be 24~36 hours, leaching concentration be 30~40%, washing three times afterwards obtain leach your liquid and
Leached mud.
2. the method that a kind of gold mine cyaniding according to claim 1 leaches choosing gold, it is characterised in that: ore grinding device therefor packet
Include ball mill, again grinding machine.
3. the method that a kind of gold mine cyaniding according to claim 1 leaches choosing gold, it is characterised in that: the step (1) will
Raw ore is milled to the mass ratio 70% that fineness is -0.090mm grade.
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| CN201910452994.3A CN110295289A (en) | 2019-05-28 | 2019-05-28 | Method for gold separation by cyaniding and leaching of gold ore |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2434064C1 (en) * | 2010-07-26 | 2011-11-20 | Общество с ограниченной ответственностью "Научно-исследовательский центр "Гидрометаллургия" | Procedure for processing refractory sulphide gold containing raw stock |
| CN103028495A (en) * | 2012-12-19 | 2013-04-10 | 青岛平度市旧店金矿 | Method for improving gold mine flotation and flotation concentrate cyaniding leaching recovery rate |
| CN104152711A (en) * | 2014-08-06 | 2014-11-19 | 哈巴河金坝矿业有限公司 | Method and device for performing all-mud cyaniding recycling on gold ores |
| CN108677030A (en) * | 2018-04-26 | 2018-10-19 | 灵宝金源矿业股份有限公司 | Golden recovery method in a kind of iron cap gold ores |
| CN109731668A (en) * | 2019-02-15 | 2019-05-10 | 赤峰柴胡栏子黄金矿业有限公司 | The method of tailings total cyanogen concentration is reduced in a kind of gold mine ore dressing process |
-
2019
- 2019-05-28 CN CN201910452994.3A patent/CN110295289A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2434064C1 (en) * | 2010-07-26 | 2011-11-20 | Общество с ограниченной ответственностью "Научно-исследовательский центр "Гидрометаллургия" | Procedure for processing refractory sulphide gold containing raw stock |
| CN103028495A (en) * | 2012-12-19 | 2013-04-10 | 青岛平度市旧店金矿 | Method for improving gold mine flotation and flotation concentrate cyaniding leaching recovery rate |
| CN104152711A (en) * | 2014-08-06 | 2014-11-19 | 哈巴河金坝矿业有限公司 | Method and device for performing all-mud cyaniding recycling on gold ores |
| CN108677030A (en) * | 2018-04-26 | 2018-10-19 | 灵宝金源矿业股份有限公司 | Golden recovery method in a kind of iron cap gold ores |
| CN109731668A (en) * | 2019-02-15 | 2019-05-10 | 赤峰柴胡栏子黄金矿业有限公司 | The method of tailings total cyanogen concentration is reduced in a kind of gold mine ore dressing process |
Non-Patent Citations (1)
| Title |
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| 刘洪萍: "《湿法冶金 浸出技术 第2版》", 31 July 2016, 冶金工业出版社 * |
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