CN102634680A - Method for comprehensively recovering magnesium during process of extracting gold from magnesium-containing gold ore pile - Google Patents
Method for comprehensively recovering magnesium during process of extracting gold from magnesium-containing gold ore pile Download PDFInfo
- Publication number
- CN102634680A CN102634680A CN2012101326682A CN201210132668A CN102634680A CN 102634680 A CN102634680 A CN 102634680A CN 2012101326682 A CN2012101326682 A CN 2012101326682A CN 201210132668 A CN201210132668 A CN 201210132668A CN 102634680 A CN102634680 A CN 102634680A
- Authority
- CN
- China
- Prior art keywords
- magnesium
- gold
- ore
- magnesium sulfate
- dump leaching
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a method for comprehensively recovering magnesium during a process of extracting gold from a magnesium-containing gold ore pile. The method comprises four steps of preparing pickle liquor, preparing crude salt, purifying magnesium sulfate and processing products, wherein the step of preparing pickle liquor is as follows: spraying a sulfuric acid solution onto the ore pile, washing out carbonate minerals in the gold ore and dissolving partial soluble magnesium into the pickle liquor; the step of preparing crude salt is as follows: evaporating and crystallizing magnesium-containing biological dump leaching effluent, thereby obtaining the crude magnesium sulfate containing impurities; the step of purifying magnesium sulfate is as follows: removing the impurities, such as iron and calcium, contained in crude magnesium sulfate; and the step of processing products is as follows: processing the magnesium sulfate crystal after being purified, thereby obtaining a magnesium sulfate product meeting the standard. According to the method disclosed by the invention, the valuable metal element in the pickle liquor is recycled, the partial acid consumption cost of the gold ore during the biological dump leaching process is made up, and the problem of environmental pollution caused by directly discharging pickle liquor is solved.
Description
Technical field
The present invention relates to a kind of method of comprehensive utilization of resources, particularly a kind of method that from the spent pickle liquor that contains magnesium Gold Ore biological dump leaching process, comprehensively reclaims magnesium.
Technical background
China is pan big country, and China kept gold output the first in the world in continuous 5 years from 2007 to 2011.Along with continually developing of gold Mineral resources; The resource that is prone to processing, GOOD TASTE reduces day by day; Low, the unmanageable gold ore resource of grade proportion in explored resource reserve is increasing, the biological dump leaching gold extraction technology be exactly handle that this type of is low-grade, one of the most promising technology of difficult-treating gold mine resource.
Because Gold Ore generally contains carbonate minerals, cause the oxidation cycle of biological dump leaching process long, leaching yield that oxidation effectiveness is thorough, not golden is low, need carry out s.t. in advance and remove carbonate and could eliminate disadvantageous effect.Acid consumption in the s.t. process directly influences production cost; And produce a large amount of pickle solutions; Part metals in the ore such as magnesium then enter into pickle solution with the ionic state, comprehensively reclaim these metals and promptly can partly remedy acid consumption cost, can make resource obtain comprehensive utilization again.
Summary of the invention
The purpose of this invention is to provide a kind of comprehensive method that reclaims magnesium in the magnesium Gold Ore dump leaching gold-extracting process that contains; This method is from the pickle solution that contains magnesium Gold Ore biological dump leaching, to reclaim magnesium; Remedy the part acid consumption cost of Gold Ore in the biological dump leaching process, solved the recycling and the direct problem of environmental pollution that discharges of pickle solution of valuable metal element in the pickle solution.
Principle of the present invention is: adjust the pH value of crude salt solution through adding Natural manganese dioxide or magnesia unslacked; Make the impurity that contains in the crude salt solution; Be precipitated out like Fe, Ca, remove impurity through hot suction filtration again, obtain the purity height, contain assorted low magnesium sulfate crystals through concentrated and decrease temperature crystalline again.
Method of the present invention comprises following four steps:
One, pickle solution produces
Prepare certain density sulphuric acid soln; Sulphuric acid soln is pumped to the ore deposit heap from collecting tank to spray with the carbonate minerals the eccysis ore; The effusive solution in heap bottom, ore deposit turns back to collecting tank; Continuous circulated sprinkling is also added sulfuric acid, and the pH of heap bottom effluent is stabilized in 2.0 up to the ore deposit, and the part soluble magnesium in this process ore is dissolved out and enters into pickle solution; Afterwards ore spray bacterium liquid is carried out biological dump leaching, pickle solution collects the entering next step;
Two, crude salt preparation
After ore deposit heap spray pickling processing finishes, pickle solution is all focused on natural air drying in the collecting tank, obtain containing the crude salt of more impurity; Also can adopt the method for high temperature evaporation to obtain crude salt during conditions permit;
Three, sal epsom is purified
The crude salt that obtains is added water to be dissolved when 70 ℃ of temperature; Solid-to-liquid ratio is 5: 3, and the pH value of the crude salt solution after the dissolving is 3.0, adds pH adjustment agent and regulates pH7.0; Hot suction filtration obtains filtrating and filter residue; The filter residue high-temperature digestion is transferred pH7.0 after heat suction filtration, and the filtrating that twice hot suction filtration obtains is mixed, and carries out the evaporation concentration operation.In order to avoid introducing new impurity as much as possible, pH adjustment agent can be selected to consider cost factor with Natural manganese dioxide, Marinco H or magnesia unslacked etc., recommends to use magnesia unslacked.
Four, product processing
With sal epsom enriching soln decrease temperature crystalline, sift out crystallization and, can obtain purity at seven water and wastewater industry sal epsom products more than 99% 45 ℃ of temperature oven dry.Adjust different bake out temperatures and can prepare the sal epsom product that contains different crystal water.
Sift out after the crystallization rest solution and can be used as mother liquor and join the crude salt dissolving step, Returning process continues to use, and forms closed circuit.
Beneficial effect of the present invention: valuable metal element in the pickle solution is recycled, remedied the part acid consumption cost of Gold Ore in the biological dump leaching process, solved the directly problem of environmental pollution of discharging of pickle solution.
Embodiment
Embodiment 1:
One, pickle solution produces
Compound concentration is the sulphuric acid soln of 20-50g/l; Be pumped to the ore deposit heap from collecting tank and spray operation; PH raise because sulfuric acid and ore react after solution flowed out from heap bottom, ore deposit; Add sulfuric acid and continuous circulated sprinkling, stop spray 2.0, pickle solution is collected in the collecting tank up to the pH of solution value stabilization.
Two, crude salt preparation
Air-dry thick sal epsom, the MgSO of preparing of pickle solution
47H
2The content of O is 85.8%.
Three, sal epsom is purified
Take by weighing a certain amount of thick sal epsom, add water and be warmed to 70 ℃ of stirring and dissolving by 5: 3 solid-to-liquid ratios.Adding magnesia unslacked adjustment pH value is 7.0, and 10 minutes after heat suction filtrations of stirring reaction, filter residue repeat above-mentioned steps and dissolve, transfer pH7.0 and hot suction filtration, the filtrating mixing that twice hot suction filtration obtained, and carry out evaporation concentration and operate.
Four, product processing
With the slow decrease temperature crystalline of sal epsom liquid concentrator that evaporation concentration obtains, reduced to room temperature in 8 hours, slowly stir in the temperature-fall period, stirring velocity 50-60 rev/min, liquid concentrator is reduced to the room temperature after-filtration and is sifted out crystallization, and crystallization is at 45 ℃ of oven dry down, the MgSO that obtains purifying
47H
2O, the recovery 64.6%.MgSO in the sal epsom product
47H
2The content of O is 99.2%, and the content of iron is 0.003%, and the content of Cl is 0.05%, meets the standard of industrial MAGNESIUM SULPHATE HEPTAHYDRATE 99.5 acceptable end product.
Embodiment 2:
One, pickle solution produces
Compound concentration is the sulphuric acid soln of 20-50g/l; Be pumped to the ore deposit heap from collecting tank and spray operation; PH raise because sulfuric acid and ore react after solution flowed out from heap bottom, ore deposit; Add sulfuric acid and continuous circulated sprinkling, stop spray 2, pickle solution is collected in the collecting tank up to the pH of solution value stabilization.
Two, crude salt preparation
Air-dry thick sal epsom, the MgSO of preparing of spent pickle liquor
47H
2The content of O is 85.8%.
Three, sal epsom is purified
Take by weighing a certain amount of thick sal epsom, add water and be warmed to 70 ℃ of stirring and dissolving by 5: 3 solid-to-liquid ratios.Adding Natural manganese dioxide adjustment pH value is 7.0, and 10 minutes after heat suction filtrations of stirring reaction, filter residue repeat above-mentioned steps and dissolve, transfer pH7.0 and hot suction filtration, the filtrating mixing that twice hot suction filtration obtained, and carry out evaporation concentration and operate.
Four, product processing
With the slow decrease temperature crystalline of sal epsom liquid concentrator that evaporation concentration obtains, reduced to room temperature in 8 hours, slowly stir in the temperature-fall period, stirring velocity 50-60 rev/min, liquid concentrator is reduced to the room temperature after-filtration and is sifted out crystallization, and crystallization is at 45 ℃ of oven dry down, the MgSO that obtains purifying
47H
2O, purity is more than 99.5%, the recovery 68.8%.MgSO in the sal epsom product
47H
2The content of O is 99.5%, and the content of iron is 0.002%, and the content of Cl is 0.05%, meets the standard of industrial MAGNESIUM SULPHATE HEPTAHYDRATE 99.5 acceptable end product.
Claims (4)
1. one kind contains the comprehensive method that reclaims magnesium in the magnesium Gold Ore dump leaching gold-extracting process, and this method may further comprise the steps:
(1), pickle solution produces
Preparation sulphuric acid soln spray ore deposit heap, the carbonate minerals in the eccysis ore, the soluble magnesium in this process ore is dissolved out and enters into pickle solution;
(2), crude salt preparation
Evaporate the thick sal epsom that water in the pickle solution obtains containing impurity;
(3), sal epsom is purified
Thick sal epsom is dissolved in water; Add pH adjustment agent adjustment pH7.0 and be settled out some impurity, carry out hot suction filtration, filter residue dissolves once more; Add pH adjustment agent adjustment pH7.0 and hot suction filtration to reclaim residual sal epsom, mix the filtrating that twice hot suction filtration obtain and carry out evaporation concentration;
(4), product processing
With the concentrated filtrate decrease temperature crystalline that step (3) obtains, sift out crystallization and 45 ℃ of oven dry and produce technical grade MAGNESIUM SULPHATE HEPTAHYDRATE 99.5 product.
2. a kind of comprehensive method that reclaims magnesium in the magnesium Gold Ore dump leaching gold-extracting process that contains according to claim 1, it is characterized in that: the evaporation mode of said step (2) is spontaneous evaporation or heating evaporation.
3. a kind of comprehensive method that reclaims magnesium in the magnesium Gold Ore dump leaching gold-extracting process that contains according to claim 1, it is characterized in that: the pH adjustment agent of said step (3) is an alkaline magnesium compound.
4. a kind of comprehensive method that reclaims magnesium in the magnesium Gold Ore dump leaching gold-extracting process that contains according to claim 4, it is characterized in that: said alkaline magnesium compound is Natural manganese dioxide or Marinco H or magnesia unslacked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101326682A CN102634680A (en) | 2012-05-03 | 2012-05-03 | Method for comprehensively recovering magnesium during process of extracting gold from magnesium-containing gold ore pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101326682A CN102634680A (en) | 2012-05-03 | 2012-05-03 | Method for comprehensively recovering magnesium during process of extracting gold from magnesium-containing gold ore pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102634680A true CN102634680A (en) | 2012-08-15 |
Family
ID=46619256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101326682A Pending CN102634680A (en) | 2012-05-03 | 2012-05-03 | Method for comprehensively recovering magnesium during process of extracting gold from magnesium-containing gold ore pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102634680A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1948522A (en) * | 2006-10-31 | 2007-04-18 | 辽宁石油化工大学 | Metho of recovering valuable metal in gold silver smelting furance waste lining brick |
| WO2007070973A1 (en) * | 2005-12-22 | 2007-06-28 | Bhp Billiton Ssm Development Pty Ltd | Magnesium oxide recovery |
| CN101250623A (en) * | 2008-03-10 | 2008-08-27 | 中国黄金集团公司技术中心 | Biological heap leaching metal technique for low grade unwieldiness gold ore |
| CN101760643A (en) * | 2008-12-24 | 2010-06-30 | 中国恩菲工程技术有限公司 | Improved method for recovering magnesium from magnesium sulfate solution |
| CN101760642A (en) * | 2008-12-24 | 2010-06-30 | 中国恩菲工程技术有限公司 | Process for recovering magnesium from magnesium sulfate solution |
| CN101760637A (en) * | 2008-12-24 | 2010-06-30 | 中国恩菲工程技术有限公司 | Leaching technology of magnesium-containing ore |
| CN101760646A (en) * | 2008-12-24 | 2010-06-30 | 中国恩菲工程技术有限公司 | Leaching method of magnesium-containing ore |
-
2012
- 2012-05-03 CN CN2012101326682A patent/CN102634680A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007070973A1 (en) * | 2005-12-22 | 2007-06-28 | Bhp Billiton Ssm Development Pty Ltd | Magnesium oxide recovery |
| CN1948522A (en) * | 2006-10-31 | 2007-04-18 | 辽宁石油化工大学 | Metho of recovering valuable metal in gold silver smelting furance waste lining brick |
| CN101250623A (en) * | 2008-03-10 | 2008-08-27 | 中国黄金集团公司技术中心 | Biological heap leaching metal technique for low grade unwieldiness gold ore |
| CN101760643A (en) * | 2008-12-24 | 2010-06-30 | 中国恩菲工程技术有限公司 | Improved method for recovering magnesium from magnesium sulfate solution |
| CN101760642A (en) * | 2008-12-24 | 2010-06-30 | 中国恩菲工程技术有限公司 | Process for recovering magnesium from magnesium sulfate solution |
| CN101760637A (en) * | 2008-12-24 | 2010-06-30 | 中国恩菲工程技术有限公司 | Leaching technology of magnesium-containing ore |
| CN101760646A (en) * | 2008-12-24 | 2010-06-30 | 中国恩菲工程技术有限公司 | Leaching method of magnesium-containing ore |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103922416B (en) | A kind of method of Separation and Recovery iron from red mud | |
| CN100469697C (en) | Method for producing low-magnesium battery-stage lithium carbonate from lithium sulfate solution | |
| CN102127657B (en) | Comprehensive recovery method for extracting ferrovanadium from stone coal acid immersion liquid | |
| CN102515220B (en) | Method for extracting alumina and gallium oxide from pulverized fuel ash to prepare aluminum oxide nanometer and polymeric ferric silicate sulfate | |
| CN113336246B (en) | Resource treatment method of waste salt | |
| WO2012163200A1 (en) | Method for separating rare earth from phosphorus ore | |
| CN103553138A (en) | Comprehensive utilization method for separating, concentrating and purifying manganese sulfate, magnesium sulfate and calcium sulfate in high-salt waste water | |
| CN108396158A (en) | A kind of processing method of the complex salt crystal object of electrolytic manganese process | |
| CN109081375A (en) | The technique that the Ammonia recovery ammonium and waste water of a kind of vanadium processed are recycled | |
| CN104261433A (en) | Method for producing potassium sulfate from potassium/chlorine-ion-containing solid waste | |
| CN114314625B (en) | Method for recovering fluoride salt from complex aluminum electrolyte | |
| CN101920998A (en) | Method for preparing manganese sulfate from waste byproducts obtained in the production of titanium white and low-grade pyrolusite | |
| CN102701263B (en) | Method for preparing copper sulfate in mode that stanniferous copper slag is leached in selective mode and free of evaporation | |
| CN113772696A (en) | Method for producing various lithium products by processing lepidolite through nitric acid pressurization method | |
| CN110510648A (en) | A method of separating and recovering aluminium, potassium and ammonium from the mixed solution of sulfur acid aluminium, potassium sulfate and ammonium sulfate | |
| CN102206748A (en) | Method for extracting potassium, rubidium, caesium and vanadium | |
| CN103539165A (en) | Method for producing potassium sulfate by utilizing insoluble rocks containing potassium | |
| CN114538471B (en) | Comprehensive utilization method of sodium sulfate-sodium chloride mixed salt | |
| CN103408046A (en) | Method for separating sodium and magnesium from laterite-nickel ore smelting primary wastewater | |
| CN101407325B (en) | Method for separating boric acid and magnesium sulphate in boric acid production mother liquor by using magnesium sulphate | |
| CN114262797B (en) | Method for effectively separating and recovering iron and aluminum from sodium roasting slag of red mud | |
| CN103031442A (en) | Method for comprehensively utilizing arsenious waste liquor produced in copper-smelting process | |
| CN112125325A (en) | Process for producing alumina by aluminosilicate mineral acid method | |
| CN102634680A (en) | Method for comprehensively recovering magnesium during process of extracting gold from magnesium-containing gold ore pile | |
| CN103991851A (en) | New process for green and cyclic production of hydrazine hydrate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120815 |