CN116970814A - Method for improving growth of copper matte particles in copper slag - Google Patents
Method for improving growth of copper matte particles in copper slag Download PDFInfo
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- CN116970814A CN116970814A CN202310985377.6A CN202310985377A CN116970814A CN 116970814 A CN116970814 A CN 116970814A CN 202310985377 A CN202310985377 A CN 202310985377A CN 116970814 A CN116970814 A CN 116970814A
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- Prior art keywords
- copper
- slag
- concentrate
- growth
- smelting
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- 239000002893 slag Substances 0.000 title claims abstract description 137
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 128
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 128
- 239000010949 copper Substances 0.000 title claims abstract description 128
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000002245 particle Substances 0.000 title claims abstract description 26
- 238000003723 Smelting Methods 0.000 claims abstract description 42
- 239000012141 concentrate Substances 0.000 claims abstract description 35
- 239000000446 fuel Substances 0.000 claims abstract description 27
- 238000003756 stirring Methods 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 238000011084 recovery Methods 0.000 claims abstract description 11
- 239000011261 inert gas Substances 0.000 claims abstract description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000000155 melt Substances 0.000 claims abstract description 4
- 230000001737 promoting effect Effects 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- BWFPGXWASODCHM-UHFFFAOYSA-N copper monosulfide Chemical compound [Cu]=S BWFPGXWASODCHM-UHFFFAOYSA-N 0.000 claims description 6
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 claims description 5
- 239000003830 anthracite Substances 0.000 claims description 5
- 239000003245 coal Substances 0.000 claims description 5
- 238000004939 coking Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 6
- 239000011707 mineral Substances 0.000 abstract description 6
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 abstract description 3
- 239000005751 Copper oxide Substances 0.000 abstract description 3
- 229910000431 copper oxide Inorganic materials 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 3
- 239000013078 crystal Substances 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- HYXXTUOWDIJLPS-UHFFFAOYSA-N copper;sulfane Chemical compound S.[Cu+2] HYXXTUOWDIJLPS-UHFFFAOYSA-N 0.000 description 2
- 229910000563 Arsenical copper Inorganic materials 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229910052947 chalcocite Inorganic materials 0.000 description 1
- 229910052951 chalcopyrite Inorganic materials 0.000 description 1
- DVRDHUBQLOKMHZ-UHFFFAOYSA-N chalcopyrite Chemical compound [S-2].[S-2].[Fe+2].[Cu+2] DVRDHUBQLOKMHZ-UHFFFAOYSA-N 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910001779 copper mineral Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 238000009856 non-ferrous metallurgy Methods 0.000 description 1
- 239000010450 olivine Substances 0.000 description 1
- 229910052609 olivine Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000006163 transport media Substances 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
Classifications
-
- 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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/005—Preliminary treatment of 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
- C22B15/00—Obtaining copper
- C22B15/0002—Preliminary treatment
- C22B15/001—Preliminary treatment with modification of the copper constituent
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a method for improving growth of copper matte particles in copper slag, which comprises the steps of adding copper-containing slag concentrate and fuel recovered by ore dressing into a slag discharge chute, a slag ladle or a depletion furnace in the copper smelting slag discharge process, introducing inert gas for stirring, preserving heat for more than 1 hour in a liquid state, and improving the recovery rate of copper in the copper slag by promoting growth of copper matte particles in the copper smelting slag; according to the invention, copper slag concentrate is added into copper smelting slag, so that sufficient raw materials are provided for the growth of copper-containing minerals, and the effect of providing seed crystals is achieved; mixing copper slag concentrate, fuel and copper smelting slag by using inert gas; meanwhile, the mode of pneumatic conveying can be that nitrogen and materials are mixed and continuously input below the liquid level of the melt, so that the mixing is more favorable, copper matte particles in copper smelting slag can be further grown, meanwhile, the content of copper oxide in the slag is further reduced, the recovery rate of copper in subsequent copper slag beneficiation can be improved, and the copper content of slag tailings is reduced.
Description
Technical Field
The invention relates to the field of nonferrous metallurgy, in particular to a method for improving growth of copper matte particles in copper slag.
Background
The copper smelting slag is actually an artificial copper ore, the main elements in the slag are Fe and SiO2, the CU, al2O3 and Zn, caO, mgO, S, other small elements are K, na, as, mn, P, sb, tiO2 and the like, olivine, silicate mixture, magnetite and the like account for more than 95% of the main components, copper ore mainly exists in the form of arsenical copper ore/metallic copper, chalcocite, chalcopyrite, cupronite and the like, and for the recovery of copper in the copper smelting slag, a fire depletion method and a mineral separation recovery method are mainly adopted at present. The growth of copper matte particles is one of the key factors for improving recovery rate, whether the method is a fire depletion method or a beneficiation recovery method.
Therefore, a method for improving the growth of copper matte particles in copper slag is provided to achieve the aim of further improving the recovery rate.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a method for improving the growth of copper matte particles in copper slag.
The technical scheme of the invention is as follows:
a method for increasing the growth of copper sulfonium particles in copper slag includes such steps as adding ore dressing and recovering copper-contained slag concentrate and fuel in slag discharge slot, slag ladle or depletion furnace, introducing inertial gas, stirring, and holding the temp for more than 1 hr.
The method specifically comprises the following steps:
s1, drying copper slag concentrate obtained by concentrating and recovering copper-smelting slag to ensure that the moisture of the copper slag concentrate is lower than 0.5%;
s2, mixing the dried copper slag concentrate with fuel according to the mass ratio of (1-10): 1;
s3, continuously adding the mixed materials into a copper smelting slag discharge chute, a slag ladle or a depletion furnace, and fully stirring to uniformly mix the mixed materials with copper smelting slag;
s4, introducing inert gas into the slag discharge launder, the slag ladle or the depletion furnace, and stirring for 0-30 min;
s5, maintaining the mixture obtained in the step S4 in a liquid state for more than 1 hour, and ensuring the growth of copper-sulfur particles in the copper smelting slag.
Wherein the copper content in the copper slag concentrate in the step S1 is more than 10 percent.
Wherein the fuel added in the step S2 is anthracite or coking coal; the fuel contains no water or less than 0.5% water.
Wherein, in the step S3, the mixture of the copper slag concentrate and the fuel is continuously conveyed to the position below the melt liquid level of the copper smelting slag discharging launder, the slag ladle or the depletion furnace by utilizing nitrogen gas in a pneumatic manner, and the proportion of the mixture of the copper slag concentrate and the fuel is 0.5-5% of copper smelting slag in the copper smelting slag discharging launder, the slag ladle or the depletion furnace.
The invention has the following beneficial effects:
1. the invention creatively proposes that the copper slag concentrate is added into the copper smelting slag, the copper mineral content in the copper smelting slag is increased, sufficient raw materials are provided for the growth of copper-containing minerals, and the copper slag concentrate plays a role of providing seed crystals, and as the copper slag concentrate contains a certain amount of sulphide minerals, part of sulphide minerals can further react with oxidizing minerals such as copper oxide and the like in the copper smelting slag, the copper oxide content in the slag is reduced, and the selectivity of the slag is improved;
2. according to the invention, the reducing fuel with low water content is added into the copper smelting slag, so that heat can be provided for keeping the copper smelting slag in a molten state, meanwhile, oxides in the slag can be reduced, the viscosity of the slag is reduced, the collision probability of copper matte particles in the slag is improved, and further growth of copper matte is realized;
3. the invention mixes copper slag concentrate, fuel and copper smelting slag by using inert gas, and simultaneously adopts a pneumatic conveying mode to mix nitrogen and materials and continuously input the mixture below the liquid level of a melt, thereby being more beneficial to full mixing, improving recovery rate and having better technical effect, and aiming at enabling the copper slag concentrate, the fuel and the slag to be more uniformly mixed and promoting uniform reaction; the CO2, SO2 and other gases can be generated in the stirring process, SO that the adding and stirring processes are required to be carried out in a place with a fume collecting hood, and a slag discharging port can be generally selected for operation; the invention uses nitrogen as a transport medium and a stirring medium for ensuring the mixing effect.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
A method for increasing the growth of copper sulfonium particles in copper slag includes such steps as adding ore dressing and recovering copper-contained slag concentrate and fuel in slag discharge slot, slag ladle or depletion furnace, introducing inertial gas, stirring, and holding the temp for more than 1 hr.
Example 1
A method for improving growth of copper matte particles in copper slag comprises the following steps:
s1, drying copper slag concentrate obtained by concentrating and recovering copper-smelting slag to ensure that the moisture of the copper slag concentrate is lower than 0.5%, and the content of copper in the selected copper slag concentrate is more than 10%;
s2, mixing the dried copper slag concentrate with fuel according to a mass ratio of 1:1, and simultaneously, selecting anthracite or coking coal as the added fuel; and ensuring that the fuel does not contain water or contains less than 0.5% of water;
s3, continuously adding the mixed materials into a copper smelting slag discharge chute, a slag ladle or a depletion furnace, and fully stirring to uniformly mix the mixed materials with copper smelting slag;
s4, introducing inert gas into the slag discharge launder, the slag ladle or the depletion furnace, and stirring for 0-30 min;
s5, maintaining the mixture obtained in the step S4 in a liquid state for more than 1 hour, and ensuring the growth of copper-sulfur particles in the copper smelting slag.
Embodiment two:
a method for improving growth of copper matte particles in copper slag comprises the following steps:
s1, drying copper slag concentrate obtained by concentrating and recovering copper-smelting slag to ensure that the moisture of the copper slag concentrate is lower than 0.5%, and the content of copper in the selected copper slag concentrate is more than 10%;
s2, mixing the dried copper slag concentrate with fuel according to a mass ratio of 5:1, and simultaneously, selecting anthracite or coking coal as the added fuel; and ensuring that the fuel does not contain water or contains less than 0.5% of water;
s3, continuously adding the mixed materials into a copper smelting slag discharge chute, a slag ladle or a depletion furnace, and fully stirring to uniformly mix the mixed materials with copper smelting slag;
s4, introducing inert gas into the slag discharge launder, the slag ladle or the depletion furnace, and stirring for 0-30 min;
s5, maintaining the mixture obtained in the step S4 in a liquid state for more than 1 hour, and ensuring the growth of copper-sulfur particles in the copper smelting slag.
Example III
A method for improving growth of copper matte particles in copper slag comprises the following steps:
s1, drying copper slag concentrate obtained by concentrating and recovering copper-smelting slag to ensure that the moisture of the copper slag concentrate is lower than 0.5%, and the content of copper in the selected copper slag concentrate is more than 10%;
s2, mixing the dried copper slag concentrate with fuel according to a mass ratio of 10:1, and simultaneously, selecting anthracite or coking coal as the added fuel; and ensuring that the fuel does not contain water or contains less than 0.5% of water;
s3, continuously adding the mixed materials into a copper smelting slag discharge chute, a slag ladle or a depletion furnace, and fully stirring to uniformly mix the mixed materials with copper smelting slag;
s4, introducing inert gas into the slag discharge launder, the slag ladle or the depletion furnace, and stirring for 0-30 min;
s5, maintaining the mixture obtained in the step S4 in a liquid state for more than 1 hour, and ensuring the growth of copper-sulfur particles in the copper smelting slag.
According to the invention, copper matte particles in the copper smelting slag can be further grown, the recovery rate of copper in the subsequent copper slag beneficiation is effectively improved, and the copper content of slag tailings is reduced.
The foregoing description is only illustrative of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims, or any equivalent structural or procedural changes, or direct or indirect application to other related arts.
Claims (5)
1. A method for improving growth of copper matte particles in copper slag is characterized by comprising the following steps: copper-containing slag concentrate and fuel recovered by ore dressing are added into a slag discharge launder, a slag ladle or a depletion furnace in the slag discharge process of copper smelting, inert gas is introduced into the slag discharge launder, the slag ladle or the depletion furnace for stirring, and the temperature is maintained for more than 1 hour in a liquid state, so that the copper recovery rate of copper in the copper slag is improved by promoting the growth of copper-sulfur particles in the copper smelting slag.
2. A method for increasing copper recovery in copper slag according to claim 1, comprising the steps of:
s1, drying copper slag concentrate obtained by concentrating and recovering copper-smelting slag to ensure that the moisture of the copper slag concentrate is lower than 0.5%;
s2, mixing the dried copper slag concentrate with fuel according to the mass ratio of (1-10): 1;
s3, continuously adding the mixed materials into a copper smelting slag discharge chute, a slag ladle or a depletion furnace, and fully stirring to uniformly mix the mixed materials with copper smelting slag;
s4, introducing inert gas into the slag discharge launder, the slag ladle or the depletion furnace, and stirring for 0-30 min;
s5, maintaining the mixture obtained in the step S4 in a liquid state for more than 1 hour, and ensuring the growth of copper-sulfur particles in the copper smelting slag.
3. The method for improving the growth of copper matte particles in copper slag according to claim 1, which is characterized in that: the copper content in the copper slag concentrate in the step S1 is more than 10 percent.
4. The method for improving the growth of copper matte particles in copper slag according to claim 1, which is characterized in that: the fuel added in the step S2 is anthracite or coking coal; the fuel contains no water or less than 0.5% water.
5. The method for improving the growth of copper matte particles in copper slag according to claim 1, which is characterized in that: in the step S3, the mixture of the copper slag concentrate and the fuel is continuously conveyed to be below the liquid level of the melt of the copper smelting slag discharging launder, the slag ladle or the depletion furnace by utilizing nitrogen gas in a pneumatic mode, wherein the proportion of the mixture of the copper slag concentrate and the fuel is 0.5-5% of copper smelting slag in the copper smelting slag discharging launder, the slag ladle or the depletion furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310985377.6A CN116970814A (en) | 2023-08-07 | 2023-08-07 | Method for improving growth of copper matte particles in copper slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310985377.6A CN116970814A (en) | 2023-08-07 | 2023-08-07 | Method for improving growth of copper matte particles in copper slag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116970814A true CN116970814A (en) | 2023-10-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310985377.6A Pending CN116970814A (en) | 2023-08-07 | 2023-08-07 | Method for improving growth of copper matte particles in copper slag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116970814A (en) |
-
2023
- 2023-08-07 CN CN202310985377.6A patent/CN116970814A/en active Pending
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