CN107904394A - The dump leaching method for pre-oxidizing of primary gold ore stone - Google Patents
The dump leaching method for pre-oxidizing of primary gold ore stone Download PDFInfo
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- CN107904394A CN107904394A CN201711245750.5A CN201711245750A CN107904394A CN 107904394 A CN107904394 A CN 107904394A CN 201711245750 A CN201711245750 A CN 201711245750A CN 107904394 A CN107904394 A CN 107904394A
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- China
- Prior art keywords
- gold ore
- ore stone
- spray
- oxidation
- primary gold
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Classifications
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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
-
- 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
- C22B11/04—Obtaining noble metals by wet processes
-
- 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
Abstract
The invention discloses a kind of dump leaching method for pre-oxidizing of primary gold ore stone, with Fe3+Salt is oxidant, primary gold ore stone is carried out to build heap spray pre-oxidation treatment, and using sodium nitrite as catalyst, the oxidant Fe in spray recovered liquid is made using air or oxygen3+Salt circular regeneration is simultaneously continuously increased, return again to spray primary gold ore stone, persistently pyrite sulfides are carried out with pre-oxidation in cycles with this, circulate operation makes the pyrite sulfides oxygenolysis that gold is wrapped up in primary gold ore stone, then can leach out by gold using traditional heap Leaching.Since the present invention utilizes air or oxygen to make oxidant circular regeneration, catalyst consumption is few, thus production cost is extremely low, while technique is simple, few without pollution, construction investment.Using the present invention a large amount of low-grade primary gold mines can be allow to be produced using heap Leaching, take full advantage of resource, more rich profit is won for enterprise.
Description
Technical field
The invention belongs to gold ore technical field, more particularly to a kind of dump leaching-method for pre-oxidizing of primary gold ore stone.
Background technology
In primary gold ore stone, gold mineral is mainly wrapped in pyrite sulfides, generally use ore extraction-broken
The technology paths such as broken-ore grinding-ore dressing-smelting are utilized.However, for a large amount of low-grade primary gold ores, due to useful group
The content divided is low, just profitless if still recycled according to above-mentioned technology path.Therefore, it is a large amount of low-grade both at home and abroad
Primary gold ore also just into unserviceable " slow-witted ore deposit ".
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of cost is extremely low, technique is simple, few without pollution, construction investment
Primary gold ore stone dump leaching-method for pre-oxidizing.
In order to solve the above technical problems, the present invention uses following technical scheme：Dump leaching-pre-oxidation side of primary gold ore stone
Method, with Fe3+Salt is oxidant, and primary gold ore stone is carried out to build heap spray pre-oxidation treatment, and using sodium nitrite as catalyst, profit
Make the oxidant Fe in spray recovered liquid with air or oxygen3+Salt circular regeneration is simultaneously continuously increased, and returns again to spray primary gold ore
Stone, circulate operation make the pyrite sulfides oxygenolysis that gold is wrapped up in primary gold ore stone.
Dump leaching-method for pre-oxidizing of above-mentioned primary gold ore stone, comprises the following steps：
<1>Prepare oxidation solution
Water is contained in container 1, adds acid for adjusting pH value to be less than 7, adds Fe3+Salt, it is 1%~50% to obtain mass concentration
Oxidation solution；
<2>Spray oxidation
By liquid-solid ratio 1: 1~1: 6, step is used<1>Oxidation solution spray primary gold ore clitter at the top of, returned from ore storage bottom
The solution of stream is recycled in container 2；
<3>Inflation oxidation
Toward step<2>Spray recovered liquid in add sodium nitrite, its mass concentration is filled with air up to 1%~50%
Or oxygen is sufficiently stirred, regenerate oxidation solution；
<4>By step<3>In regenerated oxidation solution return to step<2>Use, circulate operation makes to wrap up in primary gold ore stone
The pyrite sulfides oxygenolysis of gold.
Fe3+Salt is iron chloride.
The problem of for current a large amount of low-grade primary gold mine processing hardly possiblies, inventor establishes a kind of oxidation side
Method, with Fe3+Salt is oxidant, and primary gold ore stone is carried out to build heap spray pre-oxidation treatment, and using sodium nitrite as catalyst, profit
Make the oxidant Fe in spray recovered liquid with air or oxygen3+Salt circular regeneration is simultaneously continuously increased, and returns again to spray primary gold ore
Stone, persistently carries out pyrite sulfides with this pre-oxidation in cycles, and circulate operation makes to wrap up gold in primary gold ore stone
Pyrite sulfides oxygenolysis, then gold can be leached out using traditional heap Leaching.Due to profit of the invention
Make oxidant circular regeneration with air or oxygen, catalyst consumption is few, thus production cost is extremely low, while technique is simple, does not have
Pollution, construction investment are few.Using the present invention a large amount of low-grade primary gold mines can be allow to be produced using heap Leaching, fully
Resource is make use of, more rich profit is won for enterprise.
Embodiment
Column leaching test 1
<1>Certain mine primary gold ore stone sample 10Kg (sulfur-bearing 11.3%, containing golden 1.31g/t) is gathered, it is small to be crushed to particle diameter
In 20mm, load in leaching column；
<2>Water is contained in container 1, adds acid for adjusting pH value to be less than 7, adds iron chloride, obtains oxidation solution；
<3>By liquid-solid ratio 1: 2, step is used<2>Oxidation solution pour into leaching column, immersion releases solution to container 2 after 1 day
In, sodium nitrite is added into container 2, air is passed through and is sufficiently stirred, regenerate oxidation solution；
<4>By liquid-solid ratio 1: 3, step is used<2>Oxidation solution pour into leaching column in, soak 1d after release solution into container 3,
Sodium nitrite is added into container 3, air is passed through and is sufficiently stirred, regenerate oxidation solution；
<5>Afterwards, by step<3>With<4>In regenerating oxidation liquid return in turn leaching column in immersion, and inflate oxidation again
It is raw, circulate operation 60 days.
After 60 days, leached 60 days using conventional cyanidation method.Sample drying, weigh, be levigate, chemical examination.As a result：Sample dry weight
9.03Kg, sulfur-bearing 1.44%, containing golden 0.47g/t, sulfur oxidation rate 88.5%, gold leaching rate 67.6%.
Column leaching test 2
<1>Certain mine primary gold ore stone sample 10Kg (sulfur-bearing 8.1%, containing golden 0.98g/t) is gathered, particle diameter is crushed to and is less than
20mm, loads in leaching column；
<2>Water is contained in container 1, adds acid for adjusting pH value to be less than 7, adds iron chloride, obtains oxidation solution；
<3>By liquid-solid ratio 1: 5, step is used<2>Oxidation solution pour into leaching column, immersion releases solution to container 2 after 1 day
In, sodium nitrite is added into container 2, air is passed through and is sufficiently stirred, regenerate oxidation solution；
<4>By liquid-solid ratio 1: 4, step is used<2>Oxidation solution pour into leaching column in, soak 1d after release solution into container 3,
Sodium nitrite is added into container 3, air is passed through and is sufficiently stirred, regenerate oxidation solution；
<5>Afterwards, by step<3>With<4>In regenerating oxidation liquid return in turn leaching column in immersion, and inflate oxidation again
It is raw, circulate operation 63 days.
After 63 days, leached 84 days using conventional cyanidation method.Sample drying, weigh, be levigate, chemical examination.As a result：Sample dry weight
9.66Kg, sulfur-bearing 1.23%, containing golden 0.32g/t, sulfur oxidation rate 85.3%, gold leaching rate 68.5%.
Claims (3)
- A kind of 1. dump leaching-method for pre-oxidizing of primary gold ore stone, it is characterised in that：With Fe3+Salt is oxidant, to primary gold ore stone Carry out building heap spray pre-oxidation treatment, and using sodium nitrite as catalyst, make the oxygen in spray recovered liquid using air or oxygen Agent Fe3+Salt circular regeneration is simultaneously continuously increased, and returns again to spray primary gold ore stone, and circulate operation makes to wrap up gold in primary gold ore stone Pyrite sulfides oxygenolysis.
- 2. dump leaching-method for pre-oxidizing of primary gold ore stone according to claim 1, it is characterised in that comprise the following steps：<1>Prepare oxidation solutionWater is contained in container 1, adds acid for adjusting pH value to be less than 7, adds Fe3+Salt, obtains the oxidation that mass concentration is 1%~50% Liquid；<2>Spray oxidationBy liquid-solid ratio 1: 1~1: 6, step is used<1>Oxidation solution spray primary gold ore clitter at the top of, from the reflux of ore storage bottom Solution is recycled in container 2；<3>Inflation oxidationToward step<2>Spray recovered liquid in add sodium nitrite, its mass concentration is filled with air or oxygen up to 1%~50% Gas is sufficiently stirred, and regenerates oxidation solution；<4>By step<3>In regenerated oxidation solution return to step<2>Use, circulate operation makes to wrap up gold in primary gold ore stone Pyrite sulfides oxygenolysis.
- 3. dump leaching-method for pre-oxidizing of primary gold ore stone according to claim 2, it is characterised in that：The Fe3+Salt is chlorine Change iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711245750.5A CN107904394A (en) | 2017-11-30 | 2017-11-30 | The dump leaching method for pre-oxidizing of primary gold ore stone |
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| CN201711245750.5A CN107904394A (en) | 2017-11-30 | 2017-11-30 | The dump leaching method for pre-oxidizing of primary gold ore stone |
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| CN201711245750.5A Pending CN107904394A (en) | 2017-11-30 | 2017-11-30 | The dump leaching method for pre-oxidizing of primary gold ore stone |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109112309A (en) * | 2018-07-24 | 2019-01-01 | 曹大平 | The non-cyanogen of non-ferrous metal rare precious metal extracts waste water complete alternation technique calcium hydroxide partition method |
| CN112981130A (en) * | 2021-02-07 | 2021-06-18 | 黄靖凯 | Environment-friendly gold extraction agent and preparation method thereof |
| WO2022261693A1 (en) * | 2021-06-15 | 2022-12-22 | Oxidation Technologies Pty Ltd | Ferric/ferrous coupling in mineral processing |
Citations (3)
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| JP2014198886A (en) * | 2013-03-29 | 2014-10-23 | Jx日鉱日石金属株式会社 | Recovery method of gold from gold ore containing iron pyrite |
| CN104379778A (en) * | 2011-05-02 | 2015-02-25 | 三金属矿业有限公司 | A method for recovering indium, silver, gold and other rare, precious and base metals from complex oxide and sulfide ores |
| CN105624398A (en) * | 2014-11-26 | 2016-06-01 | 生物地带有限公司 | Treatment process for extraction of precious, base and rare elements |
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2017
- 2017-11-30 CN CN201711245750.5A patent/CN107904394A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104379778A (en) * | 2011-05-02 | 2015-02-25 | 三金属矿业有限公司 | A method for recovering indium, silver, gold and other rare, precious and base metals from complex oxide and sulfide ores |
| JP2014198886A (en) * | 2013-03-29 | 2014-10-23 | Jx日鉱日石金属株式会社 | Recovery method of gold from gold ore containing iron pyrite |
| CN105624398A (en) * | 2014-11-26 | 2016-06-01 | 生物地带有限公司 | Treatment process for extraction of precious, base and rare elements |
Non-Patent Citations (3)
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| 《黄金生产工艺指南》编委会 编著: "《黄金生产工艺指南》", 31 January 2000, 地质出版社 * |
| 常青 编著: "《水处理絮凝学》", 30 April 2011, 化学工业出版社 * |
| 黎海燕 韩勇 著: "《化学选矿》", 30 June 1989, 中南工业大学出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109112309A (en) * | 2018-07-24 | 2019-01-01 | 曹大平 | The non-cyanogen of non-ferrous metal rare precious metal extracts waste water complete alternation technique calcium hydroxide partition method |
| CN109112309B (en) * | 2018-07-24 | 2020-03-17 | 曹大平 | Calcium hydroxide separation method for non-cyanide extraction wastewater full-cycle process of non-ferrous metal rare noble metal |
| CN112981130A (en) * | 2021-02-07 | 2021-06-18 | 黄靖凯 | Environment-friendly gold extraction agent and preparation method thereof |
| WO2022261693A1 (en) * | 2021-06-15 | 2022-12-22 | Oxidation Technologies Pty Ltd | Ferric/ferrous coupling in mineral processing |
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Application publication date: 20180413 |