CN101903543A - The method that is used for refining copper concentrate - Google Patents
The method that is used for refining copper concentrate Download PDFInfo
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- CN101903543A CN101903543A CN2008801211657A CN200880121165A CN101903543A CN 101903543 A CN101903543 A CN 101903543A CN 2008801211657 A CN2008801211657 A CN 2008801211657A CN 200880121165 A CN200880121165 A CN 200880121165A CN 101903543 A CN101903543 A CN 101903543A
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- Prior art keywords
- electric furnace
- furnace
- slag
- suspension smelting
- copper
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 94
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 58
- 239000010949 copper Substances 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 41
- 239000012141 concentrate Substances 0.000 title claims abstract description 23
- 238000007670 refining Methods 0.000 title claims abstract description 10
- 238000003723 Smelting Methods 0.000 claims abstract description 74
- 239000000725 suspension Substances 0.000 claims abstract description 62
- 239000002893 slag Substances 0.000 claims abstract description 61
- 239000002184 metal Substances 0.000 claims abstract description 38
- 229910052751 metal Inorganic materials 0.000 claims abstract description 38
- 238000006243 chemical reaction Methods 0.000 claims abstract description 20
- 239000007789 gas Substances 0.000 claims abstract description 15
- 239000002699 waste material Substances 0.000 claims abstract description 13
- 230000002829 reductive effect Effects 0.000 claims abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 8
- 230000004907 flux Effects 0.000 claims abstract description 8
- 239000000376 reactant Substances 0.000 claims abstract description 7
- 230000009467 reduction Effects 0.000 claims description 27
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 239000000571 coke Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 29
- 229910052742 iron Inorganic materials 0.000 description 13
- 230000008569 process Effects 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 239000003500 flue dust Substances 0.000 description 6
- 239000002912 waste gas Substances 0.000 description 6
- 239000002245 particle Substances 0.000 description 5
- 239000002918 waste heat Substances 0.000 description 5
- 230000003203 everyday effect Effects 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 239000005864 Sulphur Substances 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 239000012716 precipitator Substances 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 229910000906 Bronze Inorganic materials 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000005275 alloying Methods 0.000 description 2
- 238000010923 batch production Methods 0.000 description 2
- 239000010974 bronze Substances 0.000 description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000011946 reduction process Methods 0.000 description 2
- 229960001866 silicon dioxide Drugs 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000001117 sulphuric acid Substances 0.000 description 2
- 235000011149 sulphuric acid Nutrition 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
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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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/04—Working-up slag
-
- 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
- C22B15/00—Obtaining copper
- C22B15/0026—Pyrometallurgy
- C22B15/0028—Smelting or converting
- C22B15/005—Smelting or converting in a succession of furnaces
-
- 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
- C22B15/00—Obtaining copper
- C22B15/0026—Pyrometallurgy
- C22B15/0028—Smelting or converting
- C22B15/0047—Smelting or converting flash smelting or converting
-
- 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
- C22B15/00—Obtaining copper
-
- 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
- C22B15/00—Obtaining copper
- C22B15/0026—Pyrometallurgy
- C22B15/0028—Smelting or converting
- C22B15/0052—Reduction smelting or converting
-
- 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
- C22B15/00—Obtaining copper
- C22B15/0026—Pyrometallurgy
- C22B15/0054—Slag, slime, speiss, or dross treating
Abstract
The present invention relates to be used for the method for refining copper concentrate.In the method, copper ore concentrates (1), flux (2) and reactant gases (3) are sent into together the reaction shaft (5) of suspension smelting furnace (4), for example be supplied to the reaction shaft (5) of flash smelting furnace, and in suspension smelting furnace (4), produce phase separately, be i.e. blister copper (13) and slag (14).In the method, to be directed to from the slag (14) of suspension smelting furnace in the electric furnace (16), and in electric furnace (16), handle slag (14) from suspension smelting furnace with reductive agent, make in electric furnace (16), to produce the phase of separating, i.e. bottom metal (17) and waste residue (18); Remove electric furnace bottom metal (17) from electric furnace (16), electric furnace bottom metal (17) is granulated, and obtain granulous electric furnace bottom metal (22); And the reaction shaft (5) that granulous electric furnace bottom metal (22) is supplied to suspension smelting furnace (4).
Description
Technical field
The present invention relates to method preamble, that be used for refining copper concentrate according to claim 1.
Background technology
When refining copper concentrate in the suspension smelting furnace of for example flash smelting furnace, from the two-phase of suspension smelting furnace acquisition as product, i.e. blister copper (blister copper) and suspended smelting slag.
After suspension smelting furnace in anode furnace further refining subsequently casting in bronze is become copper anode from the blister copper that suspension smelting furnace obtains, and by utilizing described copper anode, further refined matte electrolytically in electrolyzer.
Yet, be not that all copper that is contained in the copper ore concentrates all is transferred to blister copper from copper ore concentrates in suspension smelting furnace, and comprise a large amount of copper that usually even reach 20%, these copper can be by various slag purifying methods recovery from the slag of suspension smelting furnace.
Two kinds of diverse ways are applied to slag and purify.First method is based on the slag of partial reduction in electric furnace from suspension smelting furnace.In the method, the copper metal that obtains from electric furnace is very pure, even can send into anode furnace with the blister copper that obtains from suspension smelting furnace.In the partial reduction process from the slag of suspension smelting furnace in electric furnace, also comprise copper as the slag of the so-called partial reduction second product beyond the copper removal metal, that obtain from electric furnace.Yet, in order to reclaim the copper that is included in from electric furnace slag that obtain, partial reduction, must in concentrating (concentration) device, handle slag from the partial reduction of electric furnace, this all is expensive on process cost and investment cost.
In the method for second kind of industrial application, in electric furnace as batch process reduction slag from suspension smelting furnace, make that after reduction process the copper content of suspended smelting slag is very low, make except that bottom metal from the further processing of the waste residue of electric furnace acquisition infeasible economically.Yet, after carrying out reduction step very fully, the bottom metal that forms in the electric furnace process (or alloy) comprises a large amount of iron, make that it is disadvantageous that the electric furnace bottom metal is supplied to anode furnace with the blister copper from suspension smelting furnace, and before must being supplied to anode furnace at the copper in will being contained in the electric furnace bottom metal, at first in so-called iron converter, in independent conversion process, remove iron.
Therefore, the above-mentioned example of slag purifying method all comprises two steps.
Summary of the invention
The objective of the invention is to propose the improved method of refining copper concentrate.
Realize purpose of the present invention by method according to independent claim 1.
The preferred embodiment of the method for the present invention of giving chapter and verse in the dependent claims.
In this innovation, introduce a kind of layout, itself have two steps, but it is in cost of investment and especially more economical than above-mentioned layout on process cost.In electric furnace, in, further handle the slag that in suspension smelting furnace, generates with operate continuously method or the separate unit that works as batch processes.Suspension smelting furnace slag partly reducing in electric furnace, perhaps reduce then and make that the slag that generates is so-called deniable (refusable) waste residue in electric furnace, be that its copper content is very low, make that the remaining copper of recovery is infeasible economically in separate processes.For example the metal alloy (being bottom metal) that obtains from electric furnace is granulated by water.The alloying pellet that forms is supplied to the reaction shaft of suspension smelting furnace with copper ore concentrates, flux and reactant gases, make alloying pellet melt, and when advancing, reach and form the similar thermodynamic(al)equilibrium of blister copper by concentrate with slag by the slag in the subsider of suspension smelting furnace.At this moment, make the iron oxidation that is contained in the particle and become slag, make and directly in anode furnace, advantageously handle the blister copper that obtains from suspension smelting furnace as product.Because it is low to be included in the amount of the slagging component (mainly being iron) in the described granulated copper, so the amount of slag does not increase substantially, therefore and can not cause any excessive copper to be circulated back in the electric furnace, but the major part that is contained in the copper in the particle directly forwards to as the blister copper of product from the suspended smelting process.
In the middle of the advantage of this method, except that reducing operation and cost of investment, can also point out following feature:
Compare with existing two-step approach, reduce the copper circulation;
Only a kind of blister copper of quality is sent into anode furnace, under these circumstances, the operation of anode furnace becomes and is easier to;
In direct blister copper melting, usually produce a large amount of heat, making must the restriction oxygen enrichment.Because described heat itself is used for the melted alloy particle at this in this method, so smelting furnace can be with higher oxygen enrichment levels operation, the result obtains bigger smelting furnace capacity (so perhaps smelting furnace, reaction shaft especially can be less), and the capacity of gas tube can be less.
In a preferred embodiment, use two electric furnaces in succession.In first electric furnace, the reduction of suspension smelting furnace slag only reaches the level of about 4% Cu, it is the level that the rest parts reduced blast furnace comprises about 4% copper, and under these circumstances, be contained in from the iron in the slag of suspension smelting furnace do not reduce as yet be transferred to first electric furnace in bottom metal mutually, but be retained in first electric furnace as the slag of so-called partial reduction.As product from first electric furnace owing to do not contain iron from the blister copper of first electric furnace, so the blister copper that obtains can directly in anode furnace, use so that further handle and be fed in the anode furnace.In second electric furnace, continued reduction from the slag of the partial reduction of first electric furnace, so that reclaim the remaining copper that is included in the slag, and under these circumstances, equally with the blister copper reduced iron; The reaction shaft that makes this ferruginous bottom metal granulate and supply back suspension smelting furnace is so make iron oxidized there in the above described manner.
Description of drawings
Describe several preferred embodiments of the present invention in detail below with reference to accompanying drawing, wherein
Fig. 1 illustrates first embodiment of this method, and
Fig. 2 illustrates second embodiment of this method.
Embodiment
Fig. 1 illustrates the method that is used for refining copper concentrate 1.
In the method, send into the reaction shaft 5 of suspension smelting furnace 4 together, for example be supplied to the reaction shaft of flash smelting furnace with copper ore concentrates 1, flux 2 with such as the reactant gases 3 of oxygen-rich air.
Also flue dust 9 can be sent into the reaction shaft 5 of suspension smelting furnace 4, flue dust obtains from waste heat boiler 8, from the waste gas 7 of cooling by raised shaft 6 discharges of suspension smelting furnace 4, and/or the electric precipitator of flue dust 9 after being arranged on waste heat boiler 8 obtains.
The material of sending into the reaction shaft 5 of suspension smelting furnace 4 reacts together, and forms phase separately on the bottom 12 of the subsider 11 of suspension smelting furnace 4: blister copper 13 and at the slag 14 at blister copper 13 tops.
The waste gas 7 that produces in suspension smelting furnace is expelled to waste heat boiler 8 by raised shaft 6, reclaims the heat energy of waste gas 7 there.Waste gas cooled 7 is directed to the electric precipitator 10 from waste heat boiler 8, there flue dust 9 and waste gas 7 is separated, and flue dust 9 is looped back the reaction shaft 5 of suspension smelting furnace 4.Derive waste gas 7 from electric precipitator 10, so that for example further handle, to reclaim sulfurous gas at the sulphuric acid plant (not shown).
To guide to anode furnace 15 from the blister copper 13 that suspension smelting furnace obtains, so that pyrorefining (pyrometallurgic refining).In anode furnace 15, at first be included in a spot of sulphur in the blister copper 13 by oxidation removal, subsequently, remove the oxygen that is included in the blister copper 13 by reduction.After anode furnace 15, in anode casting device (not shown), casting in bronze is become copper anode, and by utilizing described anode, the further electrorefining of copper (being copper anode) that will be contained in the copper anode at the electrolyzer (not shown) becomes electrolytic copper.
Will be preferably but not necessarily under molten state, be directed in the electric furnace 16 from the slag 14 of suspension smelting furnace, owing to when arriving electric furnace 16, be in molten state from the slag of suspension smelting furnace 14, so this saves energy.
In reduction furnace, use such as the reductive agent of coke and handle slag, make in electric furnace 16, to form phase separately, i.e. bottom metal 17 and waste residue 18 from suspension smelting furnace 14 such as electric furnace 16.Preferably but not necessarily, in electric furnace 16 by means of the slag 14 of the coke reduction of sending into electric furnace 16 from suspension smelting furnace.
Preferably but not necessarily, also will send into electric furnace 16 from the anode furnace slag 19 of anode furnace 15.
Preferably but not necessarily, reduction makes that from the slag 14 of suspension smelting furnace the copper content in the electric furnace waste residue 18 keeps below 2% in electric furnace 16, the most advantageously is lower than 1%.
Remove the bottom metal 17 of electric furnace from electric furnace 16, and in granulating device 21, for example electric furnace bottom metal 17 is granulated by water 20.Beyond the copper removal, electric furnace bottom metal 17 especially comprises iron.
Granulous electric furnace bottom metal 22 is supplied to the reaction shaft 5 of suspension smelting furnace 4 with copper ore concentrates 1, flux 2 and reactant gases 3.
Fig. 2 illustrates another embodiment of present method, wherein replaces only electric furnace of describing in Fig. 1, uses two electric furnaces, i.e. first electric furnace 23 and second electric furnace 24 here.
In Fig. 2, at first will be directed in the electric furnace 23 from the slag 14 of suspension smelting furnace.With suspension smelting furnace slag 14 preferably but not necessarily under molten state, guide to first electric furnace 23 from suspension smelting furnace 4.
In first electric furnace 23, suspension smelting furnace slag 14 stands partial reduction by reductive agent, makes to form phase separately in first electric furnace 23 blister copper 13 and comprise about 4% slag 25 copper, partial reduction.
To be supplied to anode furnace 15 from first electric furnace 23 from the blister copper 13 of first electric furnace.The blister copper 13 that will obtain from first electric furnace 23 preferably but not necessarily be supplied to anode furnace 15 from first electric furnace 23 under molten state.As product from first electric furnace 23, acquisition can be used for the further blister copper 13 of processing in anode furnace 15, and it is because the blister copper that obtains from first electric furnace does not comprise iron that blister copper can be supplied to anode furnace 15, only suspension smelting furnace slag 14 is carried out partial reduction in first electric furnace 23.
With the slag 25 of partial reduction preferably but not necessarily under molten state, be supplied to second electric furnace 24 from first electric furnace 23.
In second electric furnace 24, stand reduction from slag 25 first electric furnace, partial reduction by reductive agent, make and form phase separately in second electric furnace 24: bottom metal 17 and waste residue 18, remaining copper content is lower than 2% in this waste residue 18, the most advantageously is lower than 1%.
Beyond the copper removal, equally especially comprise iron from the bottom metal 17 of second electric furnace.Described bottom metal 17 is granulated, and it is supplied to the reaction shaft 5 of suspension smelting furnace 4 with copper ore concentrates 1, flux 2 and reactant gases 3.
Example
That sends into suspension smelting furnace has:
Copper ore concentrates (concentrate) 111.0t/h
Flue dust (DBF dust) 19.6t/h
Slag forming agent, be flux (silica flux) 9.9t/h
Granulous bottom metal (electric stove metal) 16.6t/h
Add up to 157.2t/h
Copper ore concentrates is analyzed:
Copper Cu 34.8%
Iron Fe 26.0%
Sulphur S 29.1%
Silicon-dioxide SiO
25.0%
In addition, the oxygen-rich air of 60680Nm3 is sent into suspension smelting furnace, degree of enrichment is 46.2%.
Because the blister copper particle that the heat that sulphur that comprises in concentrate and the reaction between the iron oxygen produce is enough to melt concentrate (producing blister copper and slag) and has fine granulation is so oxygen-rich air is used for suspended smelting.Because high relatively oxygen enrichment, so generation has high content of sulfur dioxide (about 36%SO
2) gas, the total amount of comparing described gas with the situation of using lower degree of enrichment is lower.With about 66, the speed of 900Nm3/h is also discharged gas with 1,320 ℃ temperature from smelting furnace.Gas is guided to thermoelectric fly-ash separator and further guide to be used to reclaim the sulphuric acid plant of sulfurous gas before, in waste heat boiler, reclaim the major portion of the heat energy of gas.
The product that obtains from suspension smelting furnace is blister copper (speed is about 1,280 ℃ for per hour 39 tons, temperature) and slag (speed is per hour about 77 tons).
The copper content of the slag that obtains from suspension smelting furnace is 20% Cu, and in order to reclaim described copper, slag is sent into electric furnace under molten state, and therefore the slag amount of handling there is 1,830 ton of every day.In addition, a small amount of anode furnace slag (20 tons of every days) and the required every day about 91 tons coke of reducing are sent into electric furnace.As the reductive result, produce waste residue, the copper content of waste residue is very low, makes it handle further that infeasible economically [1,365 ton of every day, iron (Fe) is about 51%, silicon-dioxide (SiO
2) about 26%].As product, with every day about 400 tons speed produce bottom metal, and the iron level in the bottom metal is about 8%, all the other mainly are copper.Under 1,240 ℃ temperature, bottom metal is granulated, and make the particle exsiccation and supply backflash fast thawing furnace with concentrate.
Therefore, in this process, form blister copper as mentioned above, and in anode furnace, can advantageously described blister copper further be processed into anode copper.
It will be apparent to those skilled in the art that development, can realize main thought of the present invention in many different modes along with technology.Therefore, the present invention and various embodiment thereof are not limited to above-mentioned example, but they can change within the scope of the appended claims.
Claims (10)
1. method that is used for refining copper concentrate, in the method
-copper ore concentrates (1), flux (2) and reactant gases (3) are sent into the reaction shaft (5) of suspension smelting furnace (4) together, such as the reaction shaft (5) of flash smelting furnace, and
Generate phase separately in suspension smelting furnace (4), promptly blister copper (13) and slag (14) is characterized in that,
-will be directed to from the slag (14) of suspension smelting furnace in the electric furnace (16),
-in electric furnace (16), handle slag (14) from suspension smelting furnace with reductive agent, make in electric furnace (16), to generate the phase of separating, i.e. bottom metal (17) and waste residue (18),
-remove electric furnace bottom metal (17) from electric furnace (16),
-electric furnace bottom metal (17) is granulated, and obtain granulous electric furnace bottom metal (22), and
-granulous electric furnace bottom metal (22) is supplied to the reaction shaft (5) of suspension smelting furnace (4).
2. method according to claim 1 is characterized in that, will be directed under molten state in the electric furnace (16) from the slag (14) of suspension smelting furnace.
3. method according to claim 1 and 2 is characterized in that, by water (20) bottom metal (17) from electric furnace is granulated.
4. according to each described method among the claim 1-3, it is characterized in that, in electric furnace (16) by means of the slag (14) of the coke reduction of sending into electric furnace (16) from suspension smelting furnace.
5. according to each described method among the claim 1-4, it is characterized in that, will send into electric furnace (16) from the anode furnace slag (19) of anode furnace (15).
6. according to each described method among the claim 1-5, it is characterized in that reduction makes that from the slag (14) of suspension smelting furnace the copper content in the electric furnace waste residue (18) is lower than 2% in electric furnace (16), is preferably lower than 1%.
7. method according to claim 1 is characterized in that,
-in described method, use two electric furnaces, i.e. first electric furnace (23) and second electric furnace (24),
-at first will guide to first electric furnace (23) from the slag (14) of suspension smelting furnace,
-in first electric furnace (23), suspension smelting furnace slag (14) stands partial reduction by reductive agent, make in first electric furnace (23) to generate phase separately, i.e. and blister copper (13) and comprise about 4% slag copper, partial reduction (25),
-will send into second electric furnace (24) from first electric furnace (23) from slag first electric furnace, partial reduction (25),
-in second electric furnace (24), the slag (25) of the partial reduction that obtains from first electric furnace stands reduction by reductive agent, make and in second electric furnace (24), generate phase separately, be bottom metal (17) and waste residue (18), in waste residue (18), the copper content reservation is lower than 2% copper, the most advantageously is lower than 1% copper
-remove the bottom metal (17) of second electric furnace from second electric furnace (24),
-bottom metal (17) from second electric furnace is granulated, and obtain granulous electric furnace bottom metal (22), and
-granulous electric furnace bottom metal (22) is supplied to the reaction shaft (5) of suspension smelting furnace (4).
8. method according to claim 7 is characterized in that, will send into anode furnace (15) from the blister copper (13) that first electric furnace obtains.
9. according to claim 7 or 8 described methods, it is characterized in that, will under molten state, guide to first electric furnace (23) from the slag (14) of suspension smelting furnace from suspension smelting furnace (4).
10. according to each described method among the claim 1-9, it is characterized in that the reactant gases (3) of sending into the reaction shaft (5) of suspension smelting furnace (4) comprises oxygen-rich air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610207726.1A CN105936980A (en) | 2007-12-17 | 2008-12-15 | Method for refining copper concentrate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI20075920 | 2007-12-17 | ||
| FI20075920A FI120157B (en) | 2007-12-17 | 2007-12-17 | A process for refining copper concentrate |
| PCT/FI2008/050735 WO2009077651A1 (en) | 2007-12-17 | 2008-12-15 | Method for refining copper concentrate |
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| CN201610207726.1A Division CN105936980A (en) | 2007-12-17 | 2008-12-15 | Method for refining copper concentrate |
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| Publication Number | Publication Date |
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| CN101903543A true CN101903543A (en) | 2010-12-01 |
| CN101903543B CN101903543B (en) | 2020-07-28 |
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| CN201610207726.1A Pending CN105936980A (en) | 2007-12-17 | 2008-12-15 | Method for refining copper concentrate |
| CN200880121165.7A Active CN101903543B (en) | 2007-12-17 | 2008-12-15 | Method for refining copper concentrate |
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| CN201610207726.1A Pending CN105936980A (en) | 2007-12-17 | 2008-12-15 | Method for refining copper concentrate |
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| JP (1) | JP2011506777A (en) |
| CN (2) | CN105936980A (en) |
| AU (1) | AU2008337430B2 (en) |
| BR (1) | BRPI0821242B1 (en) |
| CL (1) | CL2008003744A1 (en) |
| EA (1) | EA018279B1 (en) |
| FI (1) | FI120157B (en) |
| PE (1) | PE20091539A1 (en) |
| PL (1) | PL213990B1 (en) |
| WO (1) | WO2009077651A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103484689A (en) * | 2012-06-13 | 2014-01-01 | 奥图泰有限公司 | Method and arrangement for refining copper concentrate |
| US8771396B2 (en) | 2012-04-16 | 2014-07-08 | Xiangguang Copper Co., Ltd. | Method for producing blister copper directly from copper concentrate |
| CN104878216A (en) * | 2015-05-21 | 2015-09-02 | 金隆铜业有限公司 | Copper smelting slag depletion method and system |
| CN106164305A (en) * | 2014-04-17 | 2016-11-23 | 奥图泰(芬兰)公司 | The manufacture method of tough cathode |
| CN109477160A (en) * | 2016-07-22 | 2019-03-15 | 奥图泰(芬兰)公司 | The method for refining copper sulfide concentrate |
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| FI124912B (en) | 2012-04-16 | 2015-03-31 | Outotec Oyj | A method for treating metallurgical slags of non-ferrous metals |
| JP6032496B2 (en) * | 2013-12-06 | 2016-11-30 | 住友金属鉱山株式会社 | Method for producing selenium from copper electrolytic slime |
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| WO2016171613A1 (en) * | 2015-04-24 | 2016-10-27 | Val'eas Recycling Solutions Ab | Method and furnace equipment for production of black copper |
| CN105087955A (en) * | 2015-08-31 | 2015-11-25 | 桂林昌鑫机械制造有限公司 | Method for directly producing blister copper through copper concentrate |
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| CN110669945B (en) * | 2019-10-17 | 2022-03-22 | 宝武集团环境资源科技有限公司 | Method for treating copper slag by using direct reduction of rotary hearth furnace and smelting reduction of ore-smelting electric furnace |
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| CN1650037A (en) * | 2002-05-03 | 2005-08-03 | 奥托库姆普联合股份公司 | Method for refining concentrate containing precious metals |
| CN1720342A (en) * | 2002-12-05 | 2006-01-11 | 奥托库姆普联合股份公司 | Method for treating slag |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8771396B2 (en) | 2012-04-16 | 2014-07-08 | Xiangguang Copper Co., Ltd. | Method for producing blister copper directly from copper concentrate |
| CN103484689A (en) * | 2012-06-13 | 2014-01-01 | 奥图泰有限公司 | Method and arrangement for refining copper concentrate |
| CN106164305A (en) * | 2014-04-17 | 2016-11-23 | 奥图泰(芬兰)公司 | The manufacture method of tough cathode |
| CN106164305B (en) * | 2014-04-17 | 2018-10-09 | 奥图泰(芬兰)公司 | The manufacturing method of tough cathode |
| CN104878216A (en) * | 2015-05-21 | 2015-09-02 | 金隆铜业有限公司 | Copper smelting slag depletion method and system |
| CN109477160A (en) * | 2016-07-22 | 2019-03-15 | 奥图泰(芬兰)公司 | The method for refining copper sulfide concentrate |
Also Published As
| Publication number | Publication date |
|---|---|
| PL392792A1 (en) | 2011-02-28 |
| CL2008003744A1 (en) | 2009-11-27 |
| BRPI0821242B1 (en) | 2019-09-10 |
| AU2008337430A1 (en) | 2009-06-25 |
| JP2011506777A (en) | 2011-03-03 |
| FI20075920A0 (en) | 2007-12-17 |
| FI20075920A (en) | 2009-06-18 |
| EA018279B1 (en) | 2013-06-28 |
| BRPI0821242A2 (en) | 2015-06-16 |
| PE20091539A1 (en) | 2009-10-29 |
| FI120157B (en) | 2009-07-15 |
| PL213990B1 (en) | 2013-06-28 |
| CN105936980A (en) | 2016-09-14 |
| WO2009077651A1 (en) | 2009-06-25 |
| CN101903543B (en) | 2020-07-28 |
| AU2008337430B2 (en) | 2013-03-28 |
| EA201000893A1 (en) | 2010-12-30 |
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