CN114657401A - Production method of 4J29 alloy - Google Patents
Production method of 4J29 alloy Download PDFInfo
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- CN114657401A CN114657401A CN202210252456.1A CN202210252456A CN114657401A CN 114657401 A CN114657401 A CN 114657401A CN 202210252456 A CN202210252456 A CN 202210252456A CN 114657401 A CN114657401 A CN 114657401A
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- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 90
- 239000000956 alloy Substances 0.000 title claims abstract description 90
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 31
- 239000002893 slag Substances 0.000 claims abstract description 89
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 47
- 239000010941 cobalt Substances 0.000 claims abstract description 47
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 47
- 230000009467 reduction Effects 0.000 claims abstract description 31
- 239000000203 mixture Substances 0.000 claims abstract description 30
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 29
- 230000004907 flux Effects 0.000 claims abstract description 28
- 238000004321 preservation Methods 0.000 claims abstract description 20
- 238000003723 Smelting Methods 0.000 claims abstract description 19
- 230000005484 gravity Effects 0.000 claims abstract description 8
- 238000006722 reduction reaction Methods 0.000 claims description 36
- 239000000126 substance Substances 0.000 claims description 20
- 239000000571 coke Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 10
- 239000000428 dust Substances 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical group [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 7
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 7
- 235000019738 Limestone Nutrition 0.000 claims description 7
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 7
- 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 7
- 239000003830 anthracite Substances 0.000 claims description 7
- 239000002802 bituminous coal Substances 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 239000006260 foam Substances 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 7
- 239000003077 lignite Substances 0.000 claims description 7
- 239000004571 lime Substances 0.000 claims description 7
- 239000006028 limestone Substances 0.000 claims description 7
- 229910044991 metal oxide Inorganic materials 0.000 claims description 7
- 150000004706 metal oxides Chemical class 0.000 claims description 7
- 229910052976 metal sulfide Inorganic materials 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- 150000003568 thioethers Chemical class 0.000 claims description 7
- 238000010891 electric arc Methods 0.000 abstract description 8
- 238000003912 environmental pollution Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000011084 recovery Methods 0.000 description 6
- 239000010949 copper Substances 0.000 description 5
- 229910052759 nickel Inorganic materials 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 230000003185 calcium uptake Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 2
- 229910000833 kovar Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- CFOAUMXQOCBWNJ-UHFFFAOYSA-N [B].[Si] Chemical compound [B].[Si] CFOAUMXQOCBWNJ-UHFFFAOYSA-N 0.000 description 1
- NEIHULKJZQTQKJ-UHFFFAOYSA-N [Cu].[Ag] Chemical compound [Cu].[Ag] NEIHULKJZQTQKJ-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
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- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 238000010310 metallurgical process Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
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- 229910052710 silicon Inorganic materials 0.000 description 1
- 229910000679 solder Inorganic materials 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
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
-
- 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
- C22B7/001—Dry processes
-
- 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
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
- C22C30/02—Alloys containing less than 50% by weight of each constituent containing copper
Abstract
The invention discloses a production method of a 4J29 alloy, which comprises the steps of (1) mixing cobalt-containing slag with the granularity of 5-45 mm, a reducing agent and a calcareous flux according to the proportion of 100: 8-20: 10-25, and then adding the mixture into a direct current electric arc furnace through a charging opening; (2) reducing and smelting the molten slag pool for 0.5-1.0 h at 1450-1550 ℃; (3) after the heat preservation is finished, the alloy and the reducing slag produced by reduction are automatically layered due to different specific gravities, the alloy and the reducing slag are respectively discharged, and the alloy is cast to obtain the 4J29 alloy. Aiming at the problems of the current state of the cobalt-containing slag treatment technology, the invention utilizes the direct-current electric arc furnace to reduce and treat the cobalt-containing slag, and the reducing agent and the calcareous flux are added for reduction smelting to produce the 4J29 alloy, thereby effectively reducing the production cost of the alloy, improving the production efficiency and reducing the environmental pollution caused by the piling of the cobalt-containing slag.
Description
Technical Field
The invention relates to the technical field of alloy production, in particular to a production method of a 4J29 alloy.
Background
The 4J29 alloy is also known as Kovar (Kovar) alloy. The alloy has a linear expansion coefficient close to that of silicon boron hard glass at the temperature of 20-450 ℃, is very similar to ceramics and glass in thermal expansion coefficient and characteristics, has good processability, is suitable for materials such as glass packaging, photoelectric communication component packaging, image tube parts, IC conductive frames and the like, and is widely used in the electronic industry.
In addition to the requirement for expansion performance and low-temperature structural stability, the 4J29 alloy must have various other characteristics, such as excellent formability, weldability, electroplating performance, resistance to silver-copper solder penetration, vacuum tightness, and oxidation performance, which are basically determined by the chemical composition of the alloy, as a structural material for electric vacuum devices and semiconductor devices. The alloy comprises the following chemical components: less than or equal to 0.03 percent of C, less than or equal to 0.50 percent of Mn, less than or equal to 0.30 percent of Si, less than or equal to 0.020 percent of P, less than or equal to 0.020 percent of S, less than or equal to 0.20 percent of Cu, less than or equal to 0.20 percent of Cr, less than or equal to 0.20 percent of Mo, 28.5 to 29.5 percent of Ni, 16.8 to 17.8 percent of Co, and the balance of Fe.
The production process of the 4J29 alloy is to melt pure metal raw materials of nickel, cobalt and iron in a vacuum induction furnace and re-melt the pure metal raw materials in a vacuum consumable electrode furnace or an electroslag furnace to obtain a qualified product. However, in the cobalt production process, a large amount of cobalt-containing slag is often generated, and the main chemical components are as follows: SiO22.0-4.0%, Cu0.1-0.2%, Ni31.0-35.0%, Co8.0-12.0%, Fe10.0-18.0%. At present, the cobalt-containing slag is used as an intermediate raw material to be treated by entering the production process again, the defects of large disturbance to a normal production system and more loss of metals such as nickel, copper and the like exist, and the production process is difficult to control. And long-term accumulation stacking not only occupies a large amount of land, but also influences the surrounding ecological environment, and causes serious waste of economic resources. If the cobalt-containing slag can be reused in the production of the 4J29 alloy, the production cost of the 4J29 alloy can be reduced, the solid waste produced in the cobalt production process can be effectively utilized, and the risk of environmental pollution is reduced.
Disclosure of Invention
Aiming at the technical problems, the invention provides a production method of a 4J29 alloy, aiming at the technical current situation and the existing problems of cobalt-containing slag treatment, the invention utilizes a direct-current electric arc furnace to reduce and treat the cobalt-containing slag, and a reducing agent and a calcareous flux are added to carry out reduction smelting to produce the 4J29 alloy, thereby effectively reducing the production cost of the alloy, improving the production efficiency and reducing the environmental pollution caused by the stockpiling of the cobalt-containing slag.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
a method of producing a 4J29 alloy, comprising:
(1) mixing cobalt-containing slag with the particle size of 5-45 mm, a reducing agent and a calcareous flux according to the proportion of 100: 8-20: 10-25, adding the mixture into a direct-current arc furnace through a feeding port, carrying out arc striking by using coke, heating to 1450-1550 ℃ after 1.5-4.0 h, and forming a free-flowing molten slag pool;
(2) reducing and smelting the molten slag pool for 0.5-1.0 h at 1450-1550 ℃, carrying out reduction reaction on metal oxides and sulfides to generate metal simple substances, further forming an intersoluble alloy, and then carrying out reduction and heat preservation, wherein the current and the voltage are adjusted and controlled according to the intensity of the reaction, so that the generated foam slag is prevented from overflowing, and meanwhile, 1-3% of reducing agent and calcium flux can be added through a feed inlet for process adjustment;
(3) after heat preservation is finished, the alloy and the reducing slag produced by reduction are automatically layered due to different specific gravities, the alloy and the reducing slag are respectively discharged, the alloy is cast to obtain 4J29 alloy, the alloy composition obtained by reduction smelting meets the standard requirement of the chemical composition of the 4J29 alloy, and the generated flue gas forms tail gas after being dedusted by a dust collector and is discharged into the atmosphere.
Wherein the cobalt-containing slag is SiO in percentage by mass2 2.0～4.0% ，Cu0.1～0.2% ，Ni31.0～35.0% ，Co8.0～12.0%，Fe10.0～18.0%。
Wherein the reducing agent is one of massive or powdery lignite, anthracite, bituminous coal and coke, and the weight percentage of the reducing agent is 8.0-20.0% of the cobalt-containing slag.
Wherein the calcareous flux is one of massive or powdery limestone and lime, and the weight percentage of the calcareous flux is 10.0-25.0 percent of the cobalt-containing slag.
In the step (2), the temperature for reduction and heat preservation of the molten slag is 1450-1550 ℃, and the time for reduction and heat preservation is 0.5-1.0 h.
The invention has the beneficial effects that: the method comprises the steps of adding cobalt-containing slag into a direct current electric arc furnace, adding a reducing agent and a calcareous flux simultaneously to form mixed slag, heating the mixed slag to 1450-1550 ℃, carrying out reduction and heat preservation for 0.5-1.0 h, and adjusting the amount of the reducing agent, the amount of the flux and the reduction time to produce the 4J29 alloy. The invention can effectively reduce the production cost of the 4J29 alloy, realize the comprehensive recycling of valuable metals of nickel, cobalt and iron, and simultaneously can solve the problems of large amount of cobalt-containing slag stockpiling and environmental pollution. According to the raw material conditions of the cobalt-containing slag and the characteristics of the related smelting process, the cobalt-containing slag is reduced and treated by using a direct-current electric arc furnace, and the 4J29 alloy is produced by adding a reducing agent and a calcareous flux for reduction smelting. The invention brings great optimization to the process control of the metallurgical process, breaks through the conventional 4J29 alloy production process, has the characteristics of short process flow and high efficiency, and can effectively improve the technical and economic indexes of production operation. Meanwhile, the solid waste produced in the cobalt production process is effectively utilized, and the risk of environmental pollution is reduced.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
Example 1
As shown in fig. 1, a method for producing a 4J29 alloy includes:
(1) mixing cobalt-containing slag with the particle size of 5mm, a reducing agent and a calcium flux according to the proportion of 100:8:10, adding the mixture into a direct-current arc furnace through a feeding port, carrying out arc striking by using coke, heating to 1450 ℃ after 1.5h, and forming a molten slag pool capable of flowing freely;
(2) reducing and smelting the molten slag pool at 1450 ℃ for 0.5h, carrying out reduction reaction on metal oxides and sulfides to generate a metal simple substance so as to form an alloy which is mutually soluble, and then carrying out reduction and heat preservation, wherein the current and the voltage are adjusted and controlled according to the intensity of the reaction so as to prevent the generated foam slag from overflowing, and meanwhile, 1-3% of reducing agent and calcareous flux can be added through a feed inlet for process adjustment;
(3) after the heat preservation is finished, the alloy and the reducing slag produced by reduction are automatically layered due to different specific gravities, the alloy and the reducing slag are respectively discharged, the alloy is cast into ingots to obtain 4J29 alloy, the alloy composition obtained by reduction smelting meets the standard requirement of 4J29 alloy chemical components, and the generated flue gas forms tail gas after dust removal through a dust collector and is discharged into the atmosphere.
Wherein the cobalt-containing slag is SiO in percentage by mass2 2.0% ，Cu0.1% ，Ni31.0% ，Co8.0%，Fe10.0%。
Wherein the reducing agent is one of blocky or powdery lignite, anthracite, bituminous coal and coke, and the weight percentage is 8.0 percent of the cobalt-containing slag.
Wherein the calcareous flux is one of massive or powdery limestone and lime, and the weight percentage of the calcareous flux is 10.0 percent of the cobalt-containing slag.
In the step (2), the temperature for reducing and preserving the heat of the molten slag is 1450 ℃, and the time for reducing and preserving the heat is 0.5 h.
Example 2
As shown in fig. 1, a method for producing a 4J29 alloy includes:
(1) mixing cobalt-containing slag with the particle size of 45mm, a reducing agent and a calcareous flux according to the proportion of 100: 20: 25, adding the mixture into a direct-current arc furnace through a feeding port, striking an arc by using coke, heating the mixture to 1550 ℃ after 4.0h, and forming a free-flowing molten slag pool;
(2) reducing and smelting the molten slag pool for 1.0h at 1550 ℃, carrying out reduction reaction on metal oxides and sulfides to generate a metal simple substance so as to form an alloy which is mutually soluble, and then carrying out reduction and heat preservation, wherein the current and the voltage are adjusted and controlled according to the intensity of the reaction so as to prevent generated foam slag from overflowing, and meanwhile, 1-3% of reducing agent and calcareous flux can be added through a feed inlet for process adjustment;
(3) after heat preservation is finished, the alloy and the reducing slag produced by reduction are automatically layered due to different specific gravities, the alloy and the reducing slag are respectively discharged, the alloy is cast to obtain 4J29 alloy, the alloy composition obtained by reduction smelting meets the standard requirement of the chemical composition of the 4J29 alloy, and the generated flue gas forms tail gas after being dedusted by a dust collector and is discharged into the atmosphere.
Wherein the cobalt-containing slag is SiO in percentage by mass2 4.0% ，Cu0.2% ，Ni35.0% ，Co12.0%，Fe18.0%。
Wherein the reducing agent is one of blocky or powdery lignite, anthracite, bituminous coal and coke, and the weight percentage is 20.0 percent of the cobalt-containing slag.
Wherein the calcareous flux is one of massive or powdery limestone and lime, and the weight percentage is 25.0 percent of the cobalt-containing slag.
In the step (2), the temperature for reducing and preserving the heat of the molten slag is 1550 ℃, and the time for reducing and preserving the heat is 1.0 h.
Example 3
As shown in fig. 1, a method for producing the 4J29 alloy comprises the following steps:
(1) mixing cobalt-containing slag with the particle size of 5mm, a reducing agent and a calcareous flux according to the proportion of 100:8:10, adding the mixture into a 100kVA direct current electric arc furnace through a charging port, igniting the mixture by using coke, heating the mixture to 1500 ℃ after 2.5 hours, and forming a molten slag pool capable of flowing freely;
(2) reducing and smelting the molten slag pool at 1500 ℃ for 45min, carrying out reduction reaction on metal oxides and sulfides to generate a metal simple substance, further forming an alloy which is mutually soluble, and then carrying out reduction and heat preservation, wherein the current and the voltage are adjusted and controlled according to the intensity of the reaction to prevent the generated foam slag from overflowing, and simultaneously, 2% of reducing agent and calcareous flux can be added through a feed inlet for process adjustment;
(3) after heat preservation is finished, alloy and reducing slag produced by reduction are automatically layered due to different specific gravities, the alloy and the reducing slag are respectively discharged, the alloy is cast into ingots to obtain 4J29 alloy, the alloy composition obtained by reduction smelting meets the standard requirement of 4J29 alloy chemical composition, and generated flue gas forms tail gas after being dedusted by a dust collector and is discharged into the atmosphere, wherein the produced alloy comprises 0.10% of chemical composition Si, 0.20% of Cu0.85%, 28.85% of Ni28%, Co17.1%, Fe = balance, the recovery rate of Ni is 99.0%, and the recovery rate of Co is 98.5%.
Wherein the cobalt-containing slag is SiO in percentage by mass2 4.0% ，Cu 0.15% ，Ni33.5% ，Co12.0%，Fe16.0%。
Wherein the reducing agent is one of blocky or powdery lignite, anthracite, bituminous coal and coke, and the weight percentage is 10 percent of the cobalt-containing slag.
Wherein the calcareous flux is one of massive or powdery limestone and lime, and the weight percentage of the calcareous flux is 17 percent of that of the cobalt-containing slag.
In the step (2), the temperature for reducing and preserving the heat of the molten slag is 1500 ℃, and the time for reducing and preserving the heat is 45 min.
Example 4
As shown in fig. 1, a method for producing a 4J29 alloy includes:
(1) mixing cobalt-containing slag with the particle size of 5mm, a reducing agent and a calcareous flux according to the proportion of 100: 20: 25, adding the mixture into a 100kVA direct current electric arc furnace through a charging port, igniting the mixture by using coke, heating the mixture to 1500 ℃ after 2.5 hours, and forming a molten slag pool capable of flowing freely;
(2) reducing and smelting the molten slag pool at 1500 ℃ for 50min, carrying out reduction reaction on metal oxides and sulfides to generate a metal simple substance, further forming an alloy which is mutually soluble, and then carrying out reduction and heat preservation, wherein the current and the voltage are adjusted and controlled according to the intensity of the reaction to prevent the generated foam slag from overflowing, and simultaneously 1% of reducing agent and calcium flux can be added through a feed inlet to carry out process adjustment;
(3) after heat preservation is finished, alloy and reducing slag produced by reduction are automatically layered due to different specific gravities, the alloy and the reducing slag are respectively discharged, the alloy is cast into ingots to obtain 4J29 alloy, the alloy composition obtained by reduction smelting meets the standard requirement of the chemical composition of 4J29 alloy, and generated flue gas forms tail gas after being dedusted by a dust collector and is discharged into the atmosphere, wherein the produced alloy comprises 0.10% of chemical composition Si, 0.15% of Cu0.05%, Ni29.05%, Co16.95% and the balance of Fe =. The recovery rate of Ni was 98.9% and the recovery rate of Co was 99.1%.
Wherein the cobalt-containing slag is SiO in percentage by mass2 4.0% ，Cu 0.15% ，Ni33.5% ，Co 12.0%，Fe16.0%。
Wherein the reducing agent is one of massive or powdery lignite, anthracite, bituminous coal and coke, and the weight percentage is 15 percent of the cobalt-containing slag.
Wherein the calcareous flux is one of massive or powdery limestone and lime, and the weight percentage is 25.0 percent of the cobalt-containing slag.
In the step (2), the temperature for reducing and preserving the heat of the molten slag is 1500 ℃, and the time for reducing and preserving the heat is 50 min.
Example 5
As shown in fig. 1, a method for producing a 4J29 alloy includes:
(1) mixing cobalt-containing slag with the particle size of 5mm, a reducing agent and a calcareous flux according to the proportion of 100:10:20, adding the mixture into a 100kVA direct current electric arc furnace through a charging port, carrying out arc striking by using coke, heating to 1550 ℃ after 3 hours, and forming a free-flowing molten slag pool;
(2) reducing and smelting the molten slag pool at 1550 ℃ for 45min, carrying out reduction reaction on metal oxides and sulfides to generate a metal simple substance so as to form an alloy which is mutually soluble, and then carrying out reduction and heat preservation, wherein the current and the voltage are adjusted and controlled according to the intensity of the reaction so as to prevent generated foam slag from overflowing, and 3% of reducing agent and calcareous flux can be added through a feed inlet for process adjustment;
(3) after heat preservation is finished, alloy and reducing slag produced by reduction are automatically layered due to different specific gravities, the alloy and the reducing slag are respectively discharged, the alloy is cast into ingots to obtain 4J29 alloy, the alloy composition obtained by reduction smelting meets the standard requirement of 4J29 alloy chemical composition, and generated flue gas forms tail gas after being dedusted by a dust collector and is discharged into the atmosphere, wherein the produced alloy comprises 0.15% of chemical composition Si, 0.20% of Cu0.20%, 29.0% of Ni29%, Co17.35% and the balance of Fe =. The recovery rate of Ni was 99.5% and the recovery rate of Co was 99.1%.
Wherein the cobalt-containing slag is SiO in percentage by mass2 4.0% ，Cu 0.15% ，Ni33.5% ，Co 12.0%，Fe16.0%。
Wherein the reducing agent is one of blocky or powdery lignite, anthracite, bituminous coal and coke, and the weight percentage is 18 percent of the cobalt-containing slag.
Wherein the calcareous flux is one of massive or powdery limestone and lime, and the weight percentage is 25.0 percent of the cobalt-containing slag.
In the step (2), the temperature for reducing and preserving the heat of the molten slag is 1550 ℃, and the time for reducing and preserving the heat is 45 min.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (5)
1. A method of producing a 4J29 alloy, comprising:
(1) mixing cobalt-containing slag with the particle size of 5-45 mm, a reducing agent and a calcareous flux according to the proportion of 100: 8-20: 10-25, adding the mixture into a direct-current arc furnace through a feeding port, carrying out arc striking by using coke, heating to 1450-1550 ℃ after 1.5-4.0 h, and forming a free-flowing molten slag pool;
(2) reducing and smelting the molten slag pool at 1450-1550 ℃ for 0.5-1.0 h, carrying out reduction reaction on metal oxides and sulfides to generate metal simple substances, further forming an alloy which is mutually soluble, and then carrying out reduction and heat preservation, wherein the current and the voltage are adjusted and controlled according to the intensity of the reaction, so that the generated foam slag is prevented from overflowing, and meanwhile, 1-3% of reducing agent and calcareous flux can be added through a feeding port for process adjustment;
(3) after heat preservation is finished, the alloy and the reducing slag produced by reduction are automatically layered due to different specific gravities, the alloy and the reducing slag are respectively discharged, the alloy is cast to obtain 4J29 alloy, the alloy composition obtained by reduction smelting meets the standard requirement of the chemical composition of the 4J29 alloy, and the generated flue gas forms tail gas after being dedusted by a dust collector and is discharged into the atmosphere.
2. The method for producing the 4J29 alloy, according to claim 1, wherein: the cobalt-containing slag is SiO in percentage by mass2 2.0～4.0% ，Cu0.1～0.2% ，Ni31.0～35.0% ，Co8.0～12.0%，Fe10.0～18.0%。
3. The method for producing the 4J29 alloy, according to claim 1, wherein: the reducing agent is one of massive or powdery lignite, anthracite, bituminous coal and coke, and the weight percentage of the reducing agent is 8.0-20.0% of the cobalt-containing slag.
4. The method for producing the 4J29 alloy according to claim 1, wherein: the calcareous flux is one of massive or powdery limestone and lime, and the weight percentage of the calcareous flux is 10.0-25.0% of the cobalt-containing slag.
5. The method for producing the 4J29 alloy according to claim 1, wherein: in the step (2), the temperature for reduction and heat preservation of the molten slag is 1450-1550 ℃, and the time for reduction and heat preservation is 0.5-1.0 h.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210252456.1A CN114657401A (en) | 2022-03-15 | 2022-03-15 | Production method of 4J29 alloy |
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| CN202210252456.1A CN114657401A (en) | 2022-03-15 | 2022-03-15 | Production method of 4J29 alloy |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020126573A1 (en) * | 2000-10-02 | 2002-09-12 | Gerrit Schubert | Housing for plastics, metal powder, ceramic powder or food processing machines |
| CN101144135A (en) * | 2007-10-19 | 2008-03-19 | 深圳市格林美高新技术股份有限公司 | Technique for producing environment-friendly nickel/cobalt/iron alloy and system thereof |
| CN111778408A (en) * | 2020-05-22 | 2020-10-16 | 金川集团股份有限公司 | Method for producing alloy by treating self-heating furnace slag with direct-current electric arc furnace |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020126573A1 (en) * | 2000-10-02 | 2002-09-12 | Gerrit Schubert | Housing for plastics, metal powder, ceramic powder or food processing machines |
| CN101144135A (en) * | 2007-10-19 | 2008-03-19 | 深圳市格林美高新技术股份有限公司 | Technique for producing environment-friendly nickel/cobalt/iron alloy and system thereof |
| CN111778408A (en) * | 2020-05-22 | 2020-10-16 | 金川集团股份有限公司 | Method for producing alloy by treating self-heating furnace slag with direct-current electric arc furnace |
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