CN103785526A - Beneficiation method of gold ore - Google Patents
Beneficiation method of gold ore Download PDFInfo
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- CN103785526A CN103785526A CN201410031959.1A CN201410031959A CN103785526A CN 103785526 A CN103785526 A CN 103785526A CN 201410031959 A CN201410031959 A CN 201410031959A CN 103785526 A CN103785526 A CN 103785526A
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- desliming
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Abstract
The invention discloses a beneficiation method of gold ore. According to the method, exploited ore is subjected to the working procedures of raw ore crushing, ore grinding, precipitation fractionation, desulfurization flotation and desliming iodine leaching, so that beneficiation operation is completed. After flotation, iodine and iodide are used as a leaching agent of obtained tailings, nontoxicity is achieved, industrial pollution is avoided, the method is simple, beneficiation time is short, recovery cost is low, and recovery efficiency is high.
Description
Technical field
The present invention relates to a kind of beneficiation method, be specifically related to a kind of beneficiation method of gold mine.
Background technology
China finds and utilizes the history of gold very long, and at present the 4th, the gold output Yi Ju world of China enters the ranks of pan big country of the world.In existing technology, most gold mines adopt floatation or extraction of gold by cyanidation.But floatation ore dressing is thorough, the rate of recovery is low.Though cyaniding has ore strong adaptability, method is simple, and the rate of recovery is high, and when ore dressing, speed is slower, and emission has severe toxicity, is detrimental to health, and environmental pollution is larger.For the day by day barren present situation of domestic gold resource, develop the beneficiation method making new advances, make full use of resource to realize, environmental protection is ore dressing fast, significant.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of beneficiation method of gold mine, and the method ore dressing leaching rate is high, and the time is short, and method is simple, has fewer environmental impacts.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
A beneficiation method for gold mine, is that the ore of exploitation is leached to operation through crushing raw ore, ore grinding, precipitation fractionation, desulfurization flotation and desliming, and its processing step is as follows:
1) crushing raw ore: raw ore is tentatively broken through jaw crusher after exploiting out, crosses 150 object rubber sieves, obtains breeze;
2) ore grinding: breeze is evenly sent into ball mill via elevator, rock feeder and carried out ore grinding, being milled to particle diameter is 180 object fine powders;
3) precipitation fractionation: fine powder is poured in flowing water, and the speed different principle that in liquid precipitate different according to the proportion of solid particle, to ore mix clean, classification, obtain desilting;
4) desulfurization flotation: adding mass concentration in desilting is sulfuric acid solution 1.5～2.5Kg/t of 90～95%, and stir with mixer, normal temperature flotation 4～8 minutes, obtains mine tailing;
5) desliming is leached: mine tailing is put into after cyclone desliming, adds iodine and iodide solution to stir, and leaches 4～10 hours under normal temperature, completes ore-dressing practice.
In step 5), in described iodine and iodide solution, content of iodine is 0.6～1%.Described iodide are one or both mixing in KI or sodium iodide.
In step 5), when described leaching, regulate pH value to 6～8.
The invention has the advantages that: the present invention is after flotation, and the mine tailing obtaining is used through iodine and iodide as leaching agent, nontoxic, without industrial pollution, method is simple, and the ore dressing time is short, and cost recovery is low, and organic efficiency is high.
The specific embodiment
Be described further with specific embodiment below, but the present invention is not limited to these embodiment.
Embodiment 1
A beneficiation method for gold mine, its processing step is as follows:
1) crushing raw ore: raw ore is tentatively broken through jaw crusher after exploiting out, crosses 150 object rubber sieves, obtains breeze;
2) ore grinding: breeze is evenly sent into ball mill via elevator, rock feeder and carried out ore grinding, being milled to particle diameter is 180 object fine powders;
3) precipitation fractionation: fine powder is poured in flowing water, and the speed different principle that in liquid precipitate different according to the proportion of solid particle, to ore mix clean, classification, obtain desilting;
4) desulfurization flotation: adding mass concentration in desilting is 93% sulfuric acid solution 2Kg/t, and stir with mixer, normal temperature flotation 6 minutes, obtains mine tailing;
5) desliming is leached: mine tailing is put into after cyclone desliming, adds iodine and KI or IodineSodium Solution to stir, and wherein in iodine and KI or IodineSodium Solution, content of iodine is 0.8%, regulates pH value to 7, leaches 7 hours under normal temperature, completes ore-dressing practice.
Embodiment 2
A beneficiation method for gold mine, its processing step is as follows:
1) crushing raw ore: raw ore is tentatively broken through jaw crusher after exploiting out, crosses 150 object rubber sieves, obtains breeze;
2) ore grinding: breeze is evenly sent into ball mill via elevator, rock feeder and carried out ore grinding, being milled to particle diameter is 180 object fine powders;
3) precipitation fractionation: fine powder is poured in flowing water, and the speed different principle that in liquid precipitate different according to the proportion of solid particle, to ore mix clean, classification, the desilting obtaining;
4) desulfurization flotation: adding mass concentration in desilting is 95% sulfuric acid solution 1.5Kg/t, and stir with mixer, normal temperature flotation 4 minutes, obtains mine tailing;
5) desliming is leached: mine tailing is put into after cyclone desliming, adds iodine and KI or IodineSodium Solution to stir, and wherein in iodine and KI or IodineSodium Solution, content of iodine is 0.6%, regulates pH value to 8, leaches 10 hours under normal temperature, completes ore-dressing practice.
Embodiment 3
A beneficiation method for gold mine, its processing step is as follows:
1) crushing raw ore: raw ore is tentatively broken through jaw crusher after exploiting out, crosses 150 object rubber sieves, obtains breeze;
2) ore grinding: breeze is evenly sent into ball mill via elevator, rock feeder and carried out ore grinding, being milled to particle diameter is 180 object fine powders;
3) precipitation fractionation: fine powder is poured in flowing water, and the speed different principle that in liquid precipitate different according to the proportion of solid particle, to ore mix clean, classification, the desilting obtaining;
4) desulfurization flotation: adding mass concentration in desilting is 90% sulfuric acid solution 2.5Kg/t, and stir with mixer, normal temperature flotation 8 minutes, obtains mine tailing;
5) desliming is leached: mine tailing is put into after cyclone desliming, adds iodine and KI or IodineSodium Solution to stir, and wherein in iodine and KI or IodineSodium Solution, content of iodine is 1%, regulates pH value to 6, leaches 4 hours under normal temperature, completes ore-dressing practice.
Embodiment 4
A beneficiation method for gold mine, its processing step is as follows:
1) crushing raw ore: raw ore is tentatively broken through jaw crusher after exploiting out, crosses 150 object rubber sieves, obtains breeze;
2) ore grinding: breeze is evenly sent into ball mill via elevator, rock feeder and carried out ore grinding, being milled to particle diameter is 180 object fine powders;
3) precipitation fractionation: fine powder is poured in flowing water, and the speed different principle that in liquid precipitate different according to the proportion of solid particle, to ore mix clean, classification, the desilting obtaining;
4) desulfurization flotation: adding mass concentration in desilting is 92% sulfuric acid solution 2.2Kg/t, and stir with mixer, normal temperature flotation 5 minutes, obtains mine tailing;
5) desliming is leached: mine tailing is put into after cyclone desliming, adds iodine and KI or IodineSodium Solution to stir, and wherein in iodine and KI or IodineSodium Solution, content of iodine is 0.7%, regulates pH value to 7, leaches 6 hours under normal temperature, completes ore-dressing practice.
Claims (4)
1. a beneficiation method for gold mine, is characterized in that: be that the ore of exploitation is leached to operation through crushing raw ore, ore grinding, precipitation fractionation, desulfurization flotation and desliming, its processing step is as follows:
1) crushing raw ore: raw ore is tentatively broken through jaw crusher after exploiting out, crosses 150 object rubber sieves, obtains breeze;
2) ore grinding: breeze is evenly sent into ball mill via elevator, rock feeder and carried out ore grinding, being milled to particle diameter is 180 object fine powders;
3) precipitation fractionation: fine powder is poured in flowing water, and the speed different principle that in liquid precipitate different according to the proportion of solid particle, to ore mix clean, classification, obtain desilting;
4) desulfurization flotation: adding mass concentration in desilting is sulfuric acid solution 1.5～2.5Kg/t of 90～95%, and stir with mixer, normal temperature flotation 4～8 minutes, obtains mine tailing;
5) desliming is leached: mine tailing is put into after cyclone desliming, adds iodine and iodide solution to stir, and leaches 4～10 hours under normal temperature, completes ore-dressing practice.
2. method according to claim 1, is characterized in that: in described iodine and iodide solution, content of iodine is 0.6～1%.
3. method according to claim 1, is characterized in that: described iodide are one or both mixing in KI or sodium iodide.
4. method according to claim 1, is characterized in that: when described leaching, regulate pH value to 6～8.
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| CN201410031959.1A CN103785526A (en) | 2014-01-23 | 2014-01-23 | Beneficiation method of gold ore |
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| CN201410031959.1A CN103785526A (en) | 2014-01-23 | 2014-01-23 | Beneficiation method of gold ore |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114534907A (en) * | 2022-03-09 | 2022-05-27 | 中国矿业大学 | Enrichment method and system of low-grade gold ore |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1042947A (en) * | 1988-12-01 | 1990-06-13 | 西安有色金属研究所 | From low-grade gold, reclaim the processing method of gold |
| CN102031390A (en) * | 2010-12-23 | 2011-04-27 | 紫金矿业集团股份有限公司 | Process for extracting gold from low-grade difficultly-treatable gold ore containing arsenic and carbon |
| CN103031434A (en) * | 2013-01-16 | 2013-04-10 | 山东黄金归来庄矿业有限公司 | Refractory gold ore desulfurizing and dearsenifying method |
| 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 |
-
2014
- 2014-01-23 CN CN201410031959.1A patent/CN103785526A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1042947A (en) * | 1988-12-01 | 1990-06-13 | 西安有色金属研究所 | From low-grade gold, reclaim the processing method of gold |
| CN102031390A (en) * | 2010-12-23 | 2011-04-27 | 紫金矿业集团股份有限公司 | Process for extracting gold from low-grade difficultly-treatable gold ore containing arsenic and carbon |
| 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 |
| CN103031434A (en) * | 2013-01-16 | 2013-04-10 | 山东黄金归来庄矿业有限公司 | Refractory gold ore desulfurizing and dearsenifying method |
Non-Patent Citations (1)
| Title |
|---|
| 李桂春等: "碘法浸金的研究", 《矿冶工程》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114534907A (en) * | 2022-03-09 | 2022-05-27 | 中国矿业大学 | Enrichment method and system of low-grade gold ore |
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Application publication date: 20140514 |