CN1049012C - Leaching extraction electrodeposition method for treating copper oxide ore - Google Patents
Leaching extraction electrodeposition method for treating copper oxide ore Download PDFInfo
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- CN1049012C CN1049012C CN96120047A CN96120047A CN1049012C CN 1049012 C CN1049012 C CN 1049012C CN 96120047 A CN96120047 A CN 96120047A CN 96120047 A CN96120047 A CN 96120047A CN 1049012 C CN1049012 C CN 1049012C
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- copper
- leaching
- extraction
- electrodeposition
- copper oxide
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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
Abstract
A leaching extraction electrodeposition method for treating copper oxide ores relates to a leaching extraction electrodeposition hydrometallurgy process for recovering metal copper from copper oxide ores, and is particularly suitable for treating dispersed copper oxide ores with more ore points and less ore quantity. The method is characterized in that: heap leaching the copper oxide ore by using sulfuric acid, and neutralizing the leaching solution by using alkali to enable copper in the leaching solution to become copper hydroxide precipitate to prepare filter residue; then sulfuric acid is used for re-dissolving the filter residue to prepare a copper sulfate solution, and then the conventional extraction-electrodeposition copper preparation process is carried out. Its advantages are use of dispersed in-situ leaching, concentrated extraction-electrodeposition, change of existing ore transportation to filter residue transportation, greatly reduced transportation cost, low investment and high effect.
Description
A kind of leaching extraction electrodeposition method of handling copper oxide ore relates to from copper oxide ore and to reclaim the leaching extraction electrodeposition hydrometallurgical processes that metallic copper adopts, and is specially adapted to that ore deposit point is many, measure less in the ore deposit, the processing of decentralized copper oxide ore.
At present, handle low-grade cupric oxide both at home and abroad and all adopt dump leaching-extraction-electrodeposition Wet-process metallurgy method of (also claiming L-SX-EW factory), its principle process is the low grade copper oxide ore with extraction, soak with certain density sulfuric acid, produce leached mud and leach liquor, leach liquor is through the extraction operation, output raffinate and load organic phases, raffinate returns dump leaching and makes leach liquor, and load organic phases is through the back extraction operation, the organic phase of must regenerating and rich copper electrolyte.The regeneration organic phase is returned the extraction operation, makes extraction agent and uses.Rich copper electrolyte gets electrolytic copper and waste electrolyte returns the back extraction operation through electrolysis process, makes strip liquor.Its advantage of method of the present invention is that leach liquor, organic phase, electrolytic solution all recycle the formation loop line, reduced pollution to environment, but leaching, extraction, three operations of electrodeposition are tight successive, are difficult to separately, and this has just limited applying of this method widely.Particularly to some decentralized, low grade copper oxide ore that reserves are little, found the factory on the spot because be subjected to ore deposit amount, industrial scale, the investment of founding the factory, the length of service limit, remote area, most of in addition mine, water power, transportation condition are very poor, do not possess the condition of design leaching, extraction electrodeposition factory, influenced the development and use of these regional copper oxide ores.The expansion scale if found the factory in a concentrated in addition ground, again because the dispersion of ore deposit point, it is very far away to be separated by between the point of ore deposit, low grade copper oxide ore (general cupric only is 0.5～0.6%) ore on exploitation ground to be transported to leaching-extraction-electrodeposition factory processes, trucking costs is very high, cause the production cost of ton copper to increase, make simultaneously hydrometallurgy factory increase ore and waste residue stacking factory site again, make plant area's floor space very big, increased land expropriation cost widely, make production cost very high, and because in the acidleach process, the chlorine in the ore is particularly for containing the high copper mine of cupric chloride, chlorion can enter in the leach liquor in a large number, and extraction-electrolytic deposition process is produced adverse influence.
The objective of the invention is to seek a kind of cost low, be convenient to dysgenic, the effective Wet-process metallurgy method that is fit to the small-sized copper oxide ore of processing dispersive of chlorion in transportation, the effectively reduction process to extraction-electrolytic deposition process.
The objective of the invention is to be achieved through the following technical solutions.
A kind of small-sized dispersion copper oxide ore leaching extraction electrodeposition method comprises cupric oxide ore is carried out dump leaching with sulfuric acid; Routine extraction-electrodeposition system copper the process that copper sulfate leaching liquid is carried out, it is characterized in that: a. will neutralize with alkali with the cupric leach liquor that makes behind the sulfuric acid dump leaching copper oxide ore, and the control endpoint pH is 7～8, make copper wherein become the copper hydroxide precipitation, make filter residue after the filtration; B. the copper hydroxide filter residue that makes is returned moltenly with sulfuric acid again, make copper-bath, after pH to 2～3 are transferred in dilution, enter conventional extraction-electrodeposition system copper process at last.
A kind of leaching extraction electrodeposition method of handling copper oxide ore of the present invention, copper oxide ore (general copper content is 0.4～1.0%) can be sprayed dump leaching (comprising drill traverse) with sulphuric acid soln on the spot behind mining, can obtain leach liquor and leached mud, the leach liquor cupric is about 4～6g/l, the pH value is 1.5～2.5, use in the alkali again and leach liquor, the pH value of its terminal point is about 7～8, make the copper in the leach liquor precipitate into copper hydroxide, filtration obtains the copper hydroxide filter residue, the filter residue that contains copper hydroxide like this can be transported to the hydrometallurgy factory of having extraction-electrodeposition operation easily and concentrate, earlier through the anti-molten copper-bath that makes of acidleach, produce electrolytic copper through extraction-electrodeposition more again.
Advantage of the present invention is that (1) can adopt decentralized to leach on the spot, concentrate extraction-electrodeposition, change existing ore transportation into the filter residue transportation, trucking costs reduces significantly, is example with the L-SX-EW factory of 1 ton of electrolytic copper of existing daily output, need transport 100 tons of ores every day, if ore is apart from the 100km of factory, then the ore freight charges are 5000 yuan, if adopt method of the present invention only to transport the leaching filter residue, then freight charges only are 162 yuan.(2) adopt in the alkali and leach liquor, can make cupric ion enter into filter residue, and the chlorion in the leach liquor is still stayed in the filtrate, does not enter in the copper hydroxide filter cake, for later extraction electrodeposition process creates favorable conditions.(3) adopt method of the present invention help promoting dispersive, contain copper grade low, be positioned at backwoodsman mining area and do not possess the development and use of the copper mine of setting up L-SX-EW factory again.(4) make full use of the extraction electrodeposition equipment of the L-SX-EW factory that has built up, avoid a large amount of overlapping investment to found the factory, bring into play the production potential of its maximum, obtain good economic benefit.Be widely used in and from copper oxide ore, reclaim copper, particularly be applicable to and disperse development and use small-sized, low-grade copper oxide ore.
Description of drawings
Fig. 1 is a kind of leaching extraction electrodeposition method process flow sheet of handling copper oxide ore of the present invention.
Below in conjunction with example a kind of leaching extraction electrodeposition method of processing cupric oxide ore of the present invention is further described.
Process of the present invention will be adopted to such an extent that cupric oxide ore is that 20 grams per liter dilute sulfuric acids spray dump leaching (or drill traverse) on exploitation ground with concentration for (1), the control solid-to-liquid ratio is 0.75, get the leachate of cupric 4～6 grams per liters, (2) at normal temperatures, stir and add NaOH or calcium oxide, in and 2 hours, it is 7～8 to make copper in the solution generate cupric oxide to precipitate that the control terminal point has pH value, after the filtration, filter residue is transported to has extraction-factory of electrodeposition disposal ability, (3) in extraction-electrodeposition factory, get copper-bath with the sulfuric acid dissolution filter residue, it returns molten process conditions is liquid-solid ratio 40～50: 1, solution acidity is 20～30 grams per liters, mixing speed is 250 rev/mins, and the time is 2 hours, and temperature is normal temperature. (4) will return molten copper-bath through traditional extraction-electrodeposition smelting process, make cathode copper.
Embodiment
1. embodiment is with copper oxide ore multielement analysis table 1
| Element | Cu | Fe | Pb | Zn | S | CaO | MgO | SiO 2 | Al 2O 3 |
| Weight % | 0.8 | 7.98 | 0.011 | 0.040 | 0.88 | 0.40 | 0.55 | 61.06 | 7.33 |
2. leach
Leaching process is got copper oxide ore 2000g, and granularity is＜-10mm, use 20g/l H
2SO
4Solution sprays leaching repeatedly, and the time is 20 days,
Leach the result
Leach liquor volume: 1500ml, leach liquor composition: table 2
| Element | Cu | Fe | Cl | SiO 2 | Al 2O 3 | MgO | CaO |
| Concentration g/l | 6.97 | 1.69 | 0.17 | 0.16 | 0.85 | 0.48 | 0.59 |
3. neutralization
Get leach liquor 150ml, with 2 hours time, 250 rev/mins of stirring velocitys got filtrate 175ml among the 20%NaOH 10ml, filter residue 3.6g, and the filtrate composition is as follows
Table 3
| Element | Cu | Fe | Cl | SiO 2 | Al 2O 3 | MgO | CaO |
| Concentration g/l | ＜0.001 | ＜0.001 | 0.16 | 0.0041 | 0.10 | 0.013 | 0.11 |
Herewith as can be known, control above integrated condition, copper is precipitated effectively, and the chlorion overwhelming majority is still stayed in the filtrate.
4. the acid of filter residue dissolving
Use 20g/l H
2SO
4Solution 150ml, dissolving 3.6g filter cake, after stirring in 2 hours, filter residue all dissolves, and gets lysate 145ml, and its composition is as follows:
Table 4
Cl in the solution has only 0.038g/l, can not influence the extraction electrodeposition process, and lysate pumps into the extraction electrodeposition operation and produces electrolytic copper after the dilution adjust pH is 2～3.
| Element | Cu | Fe | Cl |
| Concentration g/l | 7.12 | 1.74 | 0.038 |
Consider the reasonableness of the cost of industrial use, on the industrial-scale production, preferably use calcium oxide to make neutralizing agent.
Claims (3)
1. leaching extraction electrodeposition method of handling copper oxide ore is characterized in that:
A. will neutralize with alkali with the cupric leach liquor that makes behind the sulfuric acid dump leaching copper oxide ore, the control endpoint pH is 7～8, makes copper wherein become the copper hydroxide precipitation, makes filter residue after the filtration
B. the copper hydroxide filter residue that makes is returned with sulfuric acid more molten, make copper-bath after, after dilution transfers pH to be 2～3, carry out conventional extraction-electrodeposition system copper process again.
2. method according to claim 1 is characterized in that: the used alkali of the N-process of leach liquor is sodium hydroxide.
3. method according to claim 1 is characterized in that: the used alkali of the N-process of leach liquor is calcium oxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96120047A CN1049012C (en) | 1996-10-14 | 1996-10-14 | Leaching extraction electrodeposition method for treating copper oxide ore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96120047A CN1049012C (en) | 1996-10-14 | 1996-10-14 | Leaching extraction electrodeposition method for treating copper oxide ore |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1157856A CN1157856A (en) | 1997-08-27 |
| CN1049012C true CN1049012C (en) | 2000-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96120047A Expired - Fee Related CN1049012C (en) | 1996-10-14 | 1996-10-14 | Leaching extraction electrodeposition method for treating copper oxide ore |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073634C (en) * | 1994-02-01 | 2001-10-24 | 昆明理工大学 | Membrane powersupplyless electrolysis process |
| CN100342042C (en) * | 2002-08-15 | 2007-10-10 | 北京有色金属研究总院 | Acid balance method in biometallugical process |
| CN101435021B (en) * | 2007-11-13 | 2010-10-20 | 北京有色金属研究总院 | Acid heap leaching process for cupric oxide ore |
| CN101736152B (en) * | 2008-11-24 | 2011-08-17 | 北京有色金属研究总院 | Acid washed ore leaching process for low-grade copper oxide ores with high mud content |
| CN101857917B (en) * | 2010-05-24 | 2012-05-09 | 云南铜业(集团)有限公司 | Method of classified leaching of oxidized ore with abundant mud |
| CN103184334A (en) * | 2011-12-30 | 2013-07-03 | 北京有色金属研究总院 | Selection-smelting combined technology for treating mixed ore containing molybdenum, oxygen, sulfur and copper |
| KR102198415B1 (en) * | 2013-10-23 | 2021-01-06 | 비에이치피 칠레 인크 | Heap leaching of copper |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1067269A (en) * | 1992-03-31 | 1992-12-23 | 湖北省黄石市东风石油化工厂 | With delafossite wet method direct production copper sulfate process |
| CN1072961A (en) * | 1991-12-04 | 1993-06-09 | 江容广 | Utilize the multi-impurity low-grade copper oxide ore to produce the method for high-quality copper sulfate |
-
1996
- 1996-10-14 CN CN96120047A patent/CN1049012C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1072961A (en) * | 1991-12-04 | 1993-06-09 | 江容广 | Utilize the multi-impurity low-grade copper oxide ore to produce the method for high-quality copper sulfate |
| CN1067269A (en) * | 1992-03-31 | 1992-12-23 | 湖北省黄石市东风石油化工厂 | With delafossite wet method direct production copper sulfate process |
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| Publication number | Publication date |
|---|---|
| CN1157856A (en) | 1997-08-27 |
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