CN117051254A - Slag type optimizing agent for smelting copper and preparation method and application thereof - Google Patents
Slag type optimizing agent for smelting copper and preparation method and application thereof Download PDFInfo
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- CN117051254A CN117051254A CN202311088904.XA CN202311088904A CN117051254A CN 117051254 A CN117051254 A CN 117051254A CN 202311088904 A CN202311088904 A CN 202311088904A CN 117051254 A CN117051254 A CN 117051254A
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- China
- Prior art keywords
- smelting
- copper
- slag
- optimizing agent
- slag type
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- 238000003723 Smelting Methods 0.000 title claims abstract description 92
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 86
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 86
- 239000010949 copper Substances 0.000 title claims abstract description 86
- 239000002893 slag Substances 0.000 title claims abstract description 80
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 49
- 238000002360 preparation method Methods 0.000 title abstract description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 67
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000006004 Quartz sand Substances 0.000 claims abstract description 28
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 23
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 23
- 239000004571 lime Substances 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 21
- 238000007580 dry-mixing Methods 0.000 claims abstract description 6
- 239000012141 concentrate Substances 0.000 claims description 16
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 14
- 239000001301 oxygen Substances 0.000 claims description 14
- 229910052760 oxygen Inorganic materials 0.000 claims description 14
- 230000001276 controlling effect Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 239000000377 silicon dioxide Substances 0.000 claims description 5
- 239000000428 dust Substances 0.000 abstract description 7
- 238000002156 mixing Methods 0.000 abstract description 7
- 239000000779 smoke Substances 0.000 abstract description 7
- 238000002844 melting Methods 0.000 abstract description 4
- 230000008018 melting Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 description 9
- 239000007789 gas Substances 0.000 description 7
- 238000005457 optimization Methods 0.000 description 7
- 229910004298 SiO 2 Inorganic materials 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000009853 pyrometallurgy Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- XWHPIFXRKKHEKR-UHFFFAOYSA-N iron silicon Chemical compound [Si].[Fe] XWHPIFXRKKHEKR-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910052728 basic metal Inorganic materials 0.000 description 1
- 150000003818 basic metals Chemical class 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 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
- C22B15/00—Obtaining copper
- C22B15/0026—Pyrometallurgy
- C22B15/006—Pyrometallurgy working up of molten copper, e.g. refining
-
- 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
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/10—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals with refining or fluxing agents; Use of materials therefor, e.g. slagging or scorifying agents
- C22B9/103—Methods of introduction of solid or liquid refining or fluxing agents
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a slag-type optimizing agent for smelting copper, and a preparation method and application thereof. The preparation method comprises the step of dry-mixing sodium hydroxide, lime and quartz sand in a formula ratio for 20-40min. The slag optimizing agent is applied to the copper smelting slag and lead in matte process regulation and control in the copper smelting process. The addition of the slag type optimizing agent for smelting copper has the advantages of low melting point, high melting speed, good slag fluidity, small slag entrainment quantity of Pb, and the like during smelting, so that the method for adding the slag type optimizing agent for smelting copper during copper smelting has good slag mixing and Pb removal improving effects, reduces Pb content in copper smelting slag, improves Pb content in smoke dust, and lays a foundation for recycling of the copper smelting slag.
Description
Technical Field
The invention belongs to the technical field of copper smelting, and particularly relates to a slag type optimizing agent for smelting copper, and a preparation method and application thereof.
Background
Lead is one of the most important basic metals in national economy, and is widely applied to the industries of batteries, cable jackets, automobile manufacturing, military industry and the like. The lead-acid storage battery is a main consumption field of lead, and the lead consumption amount accounts for more than 80% of the whole lead demand. With the rapid development of national economy, the social demand of industrial raw materials is increasingly increased along with the continuous exploitation of world resources, concentrate resources are also continuously deficient, and therefore lead resources are also considered to be obtained from other associated minerals.
In the past, enterprises adopt high-quality copper concentrate to carry out copper smelting production, so that the produced matte basically does not have the problem of excessively high Pb content, and the trend of Pb in the smelting process does not pay excessive attention. In recent years, as copper raw material components become more complex, the content of Pb impurity in copper matte is more and more increased, pb often enters copper smelting slag and smoke dust by regulating and controlling to reduce the content of Pb in copper matte, the copper smelting slag is used as solid waste for ingredients of cement factories and as raw materials in the construction field of roadbeds and the like, metal Pb is wasted, and Pb entering the smoke dust can be recycled.
According to the prior published documents and patents, the valuable metal technology for recovering the copper smelting smoke dust is mature, but how to control Pb in the concentrate to enter the smoke dust as much as possible by regulating and controlling smelting parameters is not reported at present.
Disclosure of Invention
The first object of the invention is to provide a slag-type optimizing agent for smelting copper; the second aim is to provide a preparation method of the slag-type optimizing agent for smelting copper; a third object is to provide the use of said slag-type optimizing agent for copper smelting.
The first object of the invention is achieved in that the slag-type optimizing agent for smelting copper consists of sodium hydroxide, lime and quartz sand.
The second aim of the invention is realized by dry-mixing sodium hydroxide, lime and quartz sand in a formula ratio for 20-40min.
The third object of the invention is realized in that the slag type optimizing agent for smelting copper is applied to regulating and controlling the smelting slag and the lead-in-matte process in the copper smelting process.
The Pb content in the slag is reduced, the content of valuable metal Pb in the copper smelting slag is reduced through slag type regulation, pb volatilizes and enters smoke dust for comprehensive recycling, and the copper smelting slag with low Pb content is obtained.
The specific application is that slag type optimizing agent for smelting copper is added into copper concentrate according to proportion, and is smelted after being mixed evenly, and the oxygen concentration is 60-85% and the gas-material ratio is 160-190ml/g, and the smelting temperature is 1150-1600 ℃.
The slag type optimizing agent for smelting copper comprises the following components in percentage by mass of copper concentrate: 1% -5% of NaOH, 1% -4% of lime and quartz sand.
Preferably, the quartz sand contains 90% of SiO by mass percent 2 The addition amount is based on the silicon-iron ratio of quartz sand to copper concentrate: siO (SiO) 2 /Fe=0.6-0.95/1。
Preferably, the content of NaOH is more than 99% by mass, and the granularity is 1-2 mm;
preferably, the quartz sand SiO is calculated by mass percent 2 The content of (2) is more than 85%, and the granularity is 1-2 mm;
preferably, the lime content is more than 90% by mass, and the granularity is 1-2 mm;
preferably, the slag type optimizing agent for smelting copper comprises the following components in parts by weight: 1% -5% of NaOH, 1% -4% of lime and quartz sand.
Preferably, the quartz sand contains 90% of SiO by mass percent 2 The addition amount is according to the silicon-iron ratio of quartz sand to copper concentrate: siO (SiO) 2 /Fe=0.6-0.95/1。
Preferably, the gas-material ratio of the introduced oxygen is 180-190 ml/g.
Preferably, naOH, lime and quartz sand are dry blended in proportion for 20-40min.
Preferably, the granularity of the slag type optimizing agent for smelting copper obtained by mixing is 1-5 mm.
Preferably, the smelting time is 25-40min.
The slag type optimizing agent for copper smelting provided by the invention has the advantages of low melting point, high melting speed, good slag fluidity, small slag entrainment amount of Pb, and the like when being mixed with melt, so that the method for adding the slag type optimizing agent for copper smelting in the copper smelting process has good slag mixing and Pb removal improving effects, reduces Pb content in copper smelting slag, improves Pb content in smoke dust, and lays a foundation for recycling of the copper smelting slag. The slag modifier is convenient to use, the labor intensity of workers is not increased, and the impurity element removal capacity in the copper smelting process is improved, so that the production cost is reduced.
Drawings
FIG. 1 is a schematic diagram showing the effect of oxygen concentration on Pb content in different phases.
Detailed Description
The invention is further illustrated, but is not limited in any way, by the following examples, and any alterations or substitutions based on the teachings of the invention are within the scope of the invention.
The slag type optimizing agent for smelting copper consists of sodium hydroxide, lime and quartz sand.
The mass ratio of the sodium hydroxide to the lime to the quartz sand is (1-5): (1-4): (91-98).
The mass ratio of the sodium hydroxide to the lime to the quartz sand is (2-4): (2-3): (93-96).
The silica sand has the silica content of more than 85% and the granularity of 1-2 mm.
The content of the silica in the quartz sand is more than 90% by mass percent.
The lime content is more than 90% by mass, and the granularity is 1-2 mm.
The sodium hydroxide content is more than 99% by mass, and the granularity is 1-2 mm.
The preparation method of the slag type optimizing agent for smelting copper is to dry mix sodium hydroxide, lime and quartz sand in a formula ratio for 20-40min.
The application of the slag optimizing agent for smelting copper is the application of the slag optimizing agent for smelting copper in the process of regulating and controlling smelting slag and lead in matte in the copper smelting process.
The application of the slag optimizing agent for smelting copper in the process of regulating and controlling smelting slag and lead in matte in the copper smelting process is that the slag optimizing agent for smelting copper is added into copper concentrate, and after being uniformly mixed, the copper concentrate is smelted for 25-40min at the temperature of 1150-1600 ℃ under the conditions that the oxygen concentration is 60-85 percent and the gas-material ratio is 160-190 ml/g.
The invention is further illustrated by the following examples:
example 1
Copper concentrate 2wt% NaOH, 3wt% lime and SiO 2 And (3) dry-mixing the quartz sand with Fe=0.9/1 for 30min, and mixing to obtain the slag type optimizing agent for smelting copper, wherein the granularity of the slag type optimizing agent is 1-5 mm. Wherein the quartz sand contains 85% SiO 2 The granularity is 1-2 mm; the content of NaOH is more than 99%, and the granularity is 1-2 mm; lime content is more than 90%, and granularity is 1-2 mm;
adding the slag type optimizing agent for smelting copper into prepared copper concentrate, uniformly mixing to prepare smelting raw materials, smelting at 1300 ℃, introducing 70% oxygen in the smelting process, and smelting for 25-40min, wherein the ratio of the amount of oxygen to the gas-material ratio of the smelting raw materials is 186 ml/g.
The slag type optimizing agent for smelting copper prepared in the embodiment is used in the pyrometallurgy of copper, and Pb contents in a slag phase, a gas phase and a matte phase before and after slag type optimization are compared, as shown in Table 1.
TABLE 1 Pb content% in the different phases before and after slag optimization
Example 2
Copper concentrate 5wt% NaOH, 2wt% lime and SiO 2 And (3) dry-mixing the quartz sand with Fe=0.8/1 for 40min to obtain the slag type optimizing agent for smelting copper, wherein the granularity of the slag type optimizing agent is 1-5 mm. Wherein the quartz sand contains 85% SiO 2 The granularity is 1-2 mm; the content of NaOH is more than 99%, and the granularity is 1-2 mm; lime content is more than 90%, and granularity is 1-2 mm;
adding the slag type optimizing agent for smelting copper into prepared copper concentrate, uniformly mixing to prepare smelting raw materials, smelting at 1600 ℃, introducing 65% oxygen in the smelting process, and smelting for 25-40min, wherein the ratio of the amount of the introduced oxygen to the gas-material ratio of the smelting raw materials is 189 ml/g.
The slag type optimizing agent for smelting copper prepared in the embodiment is used in the pyrometallurgy of copper, and Pb contents in a slag phase, a gas phase and a matte phase before and after slag type optimization are compared, as shown in Table 2.
TABLE 2 Pb content% in the different phases before and after slag optimization
Example 3
Copper concentrate 1wt% NaOH, 4wt% lime and SiO 2 And (3) dry-mixing the quartz sand with Fe=0.95/1 for 20min to obtain the slag type optimizing agent for smelting copper, wherein the granularity of the slag type optimizing agent is 1-5 mm. Wherein the quartz sand contains 85% SiO 2 The granularity is 1-2 mm; the content of NaOH is more than 99%, and the granularity is 1-2 mm; lime content is more than 90%, and granularity is 1-2 mm;
adding the slag type optimizing agent for smelting copper into prepared copper concentrate, uniformly mixing to prepare smelting raw materials, smelting at 1200 ℃, introducing oxygen with the concentration of 60% in the smelting process, and smelting for 25-40min, wherein the ratio of the amount of the introduced oxygen to the gas material of the smelting raw materials is 180 ml/g.
The slag type optimizing agent for smelting copper prepared in the embodiment is used in the pyrometallurgy of copper, and Pb contents in a slag phase, a gas phase and a matte phase before and after slag type optimization are compared, as shown in Table 3.
TABLE 3 Pb content% in different phases before and after slag optimization
Comparing the 9 groups of experimental results related to the three condition examples, the Pb content in the slag phase and the matte phase after slag type optimization is obviously reduced, and the Pb content in the gas phase is obviously increased.
Example 4
The experimental conditions were the same as in example 1, except that 5 experiments were conducted with oxygen at concentrations of 60%, 65%, 70%, 75%, 85% respectively during the smelting process.
The results in FIG. 1 show that the Pb content in the gas phase is substantially unchanged at an oxygen concentration of 60-70%, the Pb content in the slag phase is increased by about 10%, and the Pb content in the matte phase is decreased by about 10%. Under the condition that the oxygen concentration is 70-85%, the Pb content in the gas phase and the matte phase has a remarkable decreasing trend, and the Pb content in the slag phase is remarkably increased.
Claims (10)
1. The slag type optimizing agent for smelting copper is characterized by comprising sodium hydroxide, lime and quartz sand.
2. The slag type optimizing agent for smelting copper according to claim 1, wherein the mass ratio of sodium hydroxide to lime to quartz sand is (1-5): (1-4): (91-98).
3. The slag type optimizing agent for smelting copper according to claim 1, wherein the mass ratio of sodium hydroxide to lime to quartz sand is (2-4): (2-3): (93-96).
4. The slag type optimizing agent for copper smelting according to any one of claims 1 to 3, wherein the silica content of the quartz sand is more than 85% by mass percent, and the granularity is 1 to 2mm.
5. The slag type optimizing agent for smelting copper as defined in claim 4, wherein the silica content of the quartz sand is more than 90% by mass percent.
6. The slag type optimizing agent for copper smelting according to any one of claims 1 to 3, wherein the lime content is more than 90% by mass and the granularity is 1 to 2mm.
7. The slag type optimizing agent for copper smelting according to any one of claims 1 to 3, wherein the sodium hydroxide content is more than 99% by mass and the granularity is 1 to 2mm.
8. The method for preparing the slag type optimizing agent for copper smelting according to claim 1-7, which is characterized in that the slag type optimizing agent is prepared by dry mixing sodium hydroxide, lime and quartz sand in a formula ratio for 20-40min.
9. The use of the slag type optimizing agent for smelting copper according to claims 1-7, characterized in that the slag type optimizing agent for smelting copper is used in regulating and controlling the lead smelting slag and copper matte in the copper smelting process.
10. The application of the slag type optimizing agent for smelting copper according to claim 9, wherein the application in the process of regulating and controlling smelting slag and lead in matte in the copper smelting process is specifically that after the slag type optimizing agent for smelting copper is added into copper concentrate and mixed uniformly, smelting is carried out for 25-40min at the temperature of 1150-1600 ℃ under the conditions that the oxygen concentration is 60-85%, the gas-material ratio is 160-190 ml/g.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311088904.XA CN117051254A (en) | 2023-08-28 | 2023-08-28 | Slag type optimizing agent for smelting copper and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311088904.XA CN117051254A (en) | 2023-08-28 | 2023-08-28 | Slag type optimizing agent for smelting copper and preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117051254A true CN117051254A (en) | 2023-11-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311088904.XA Pending CN117051254A (en) | 2023-08-28 | 2023-08-28 | Slag type optimizing agent for smelting copper and preparation method and application thereof |
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| Country | Link |
|---|---|
| CN (1) | CN117051254A (en) |
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- 2023-08-28 CN CN202311088904.XA patent/CN117051254A/en active Pending
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