CN115369261A - Preparation method of nickel anode plate with low plate breakage rate - Google Patents
Preparation method of nickel anode plate with low plate breakage rate Download PDFInfo
- Publication number
- CN115369261A CN115369261A CN202210978101.0A CN202210978101A CN115369261A CN 115369261 A CN115369261 A CN 115369261A CN 202210978101 A CN202210978101 A CN 202210978101A CN 115369261 A CN115369261 A CN 115369261A
- Authority
- CN
- China
- Prior art keywords
- nickel
- anode plate
- nickel anode
- plate
- low
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
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
- C22B23/00—Obtaining nickel or cobalt
- C22B23/02—Obtaining nickel or cobalt by dry processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
-
- 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
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
A preparation method of a nickel anode plate with low plate breakage rate belongs to the technical field of producing the nickel anode plate by non-ferrous metal smelting, and comprises the following steps of reasonable material preparation, converter blowing, nickel anode plate casting, nickel anode plate demoulding and nickel anode plate heat preservation. The invention controls the mass ratio of nickel to copper of the material fed into the furnace to be 4.5:1 above, the low nickel matte melt with the nickel content between 28 and 29 percent is obtained. And blowing the low-grade nickel matte melt through a converter to obtain a high-grade nickel matte melt and pouring a nickel anode plate. Demoulding the nickel anode plate at 650-700 ℃ and taking out the nickel anode plate, and slowly cooling the nickel anode plate in a heat preservation pit for 48 hours to finish the beta Ni treatment 3 S 2 To beta' Ni 3 S 2 The phase change of the nickel anode plate can reduce the plate breaking quantity of the nickel anode plate, the plate breaking rate is from 2.55% to 1.15%, and the product yield is improved. Less broken plates circulate in the production system, haveThe energy consumption is effectively saved, and the production cost is reduced.
Description
Technical Field
The invention belongs to the technical field of nickel anode plates produced by non-ferrous metal smelting, and particularly relates to a preparation method of a nickel anode plate with a low plate breakage rate.
Background
The smelting plant adopts an Ausmelt furnace oxygen-enriched top blowing technology, and air and fuel are sprayed into the smelting plant through a spray gun to provide heat for the smelting plant; controlling the oxidation and reduction reactions of the charge by adjusting the ratio of fuel to oxygen and the proportion of reduced coal in the feed; and discharging the furnace burden after melting to form slag and nickel melt into a settling electric furnace, and settling and separating by the settling electric furnace to obtain the low-grade nickel matte melt. Discharging the low-grade nickel matte melt from the front of the furnace, conveying the low-grade nickel matte melt into a converter through a nickel matte ladle for converting, conveying the obtained high-grade nickel matte melt into a heat preservation furnace, and obtaining a nickel anode plate through a casting process. In the process of producing the nickel anode plate, the quality of the nickel anode plate is influenced by various factors such as material complexity, smelting grade fluctuation, blowing end point control, blowing temperature change, converter cold charge blowing degree and the like, and the plate breakage rate of the nickel anode plate cannot be ensured.
Therefore, there is a need in the art for a new solution to solve this problem.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the preparation method of the nickel anode plate with the low plate breakage rate is provided for solving the technical problem that the plate breakage rate of the nickel anode plate cannot be ensured due to the fact that the quality of the nickel anode plate is influenced by various factors such as material complexity, smelting grade fluctuation, blowing end point control, blowing temperature change, converter cold charge blowing degree and the like in the process of producing the nickel anode plate at present.
The preparation method of the nickel anode plate with low plate breakage rate comprises the following steps which are sequentially carried out,
step one, batching
Controlling the mass ratio of nickel to copper of the materials fed into the furnace to be 4.5:1, putting the mixture into an Ausmelt furnace, smelting the mixture in the Ausmelt furnace to obtain a metal melt with the nickel content of 28-29%, and sending the low-ice nickel melt obtained by settling and separating the metal melt in a settling electric furnace into a horizontal converter;
step two, blowing in a horizontal converter
The master control personnel of the converter set the temperature of the horizontal converter, and then the feeding of the low nickel matte melt is carried out, and the air volume is 11800Nm 3 /h～12000Nm 3 Adding quartz with the granularity of 15-20 mm, adding cold material with the nickel grade of 2-5 percent, and performing slag discharge operation to obtain high-nickel matte melt;
step three, casting the nickel anode plate
Sending the high nickel matte melt into a holding furnace, discharging the high nickel matte melt from a discharge port of the holding furnace, and casting the high nickel matte melt into a casting mold of a linear casting machine through a launder and a casting ladle to obtain a nickel anode plate;
step four, demoulding the nickel anode plate
Cooling the cast nickel anode plate in a casting mould to 650-700 ℃, demoulding, taking out, hoisting the nickel anode plate into a trolley for loading the anode plate, and sending the nickel anode plate into a heat preservation pit for heat preservation;
step five, heat preservation of the nickel anode plate
Hoisting the nickel anode plate into a heat preservation pit for slow cooling to finish the beta Ni 3 S 2 -β′Ni 3 S 2 After the nickel anode plate is slowly cooled for 48 hours, the temperature of the anode plate is reduced to 150-200 ℃, and then the nickel anode plate is cooled to room temperature in the air, so that the nickel anode plate with low plate breakage rate is obtained.
The temperature of the horizontal converter is set to be 1200-1250 ℃.
The thickness of the nickel anode plate obtained in the third step is 50mm, and the weight of each nickel anode plate is 100kg.
Through the design scheme, the invention can bring the following beneficial effects:
the invention controls the mass ratio of nickel to copper of the material fed into the furnace to be 4.5:1 above, the low nickel matte melt with the nickel content between 28 and 29 percent is obtained. And blowing the low-grade nickel matte melt through a converter to obtain a high-grade nickel matte melt and pouring a nickel anode plate. Demoulding and taking out the nickel anode plate at 650-700 ℃, and slowly cooling the heat-preservation pit for 48 hours to finish the treatment of beta Ni 3 S 2 To beta' Ni 3 S 2 The phase change of the nickel anode plate can reduce the plate breaking quantity of the nickel anode plate, the plate breaking rate is from 2.55% to 1.15%, and the product yield is improved. Less broken plates circulate in the production system, thereby effectively saving energy consumption and reducing production cost.
Drawings
The invention is further described with reference to the following figures and detailed description:
FIG. 1 is a flow chart of a method for preparing a nickel anode plate with low plate breakage rate according to the invention.
Detailed Description
The first embodiment,
A preparation method of a nickel anode plate with low plate breakage rate is shown in figure 1 and comprises the following steps which are sequentially carried out:
step one, reasonable proportioning
Feeding a metal melt with the nickel content of 28% obtained by smelting the materials in an Australian furnace to obtain a low-ice nickel melt, and carrying out settling separation on the low-ice nickel melt in a settling electric furnace to obtain a low-ice nickel melt, wherein the nickel-copper mass ratio of the materials in the furnace is 4.5;
step two, converter blowing
The converter master control personnel set the converter blowing temperature to be controlled at 1200 ℃, control the Fe content of the nickel anode plate to be 2-4.5 percent, and control the feeding of the low-grade nickel matte melt and the open air volume to be 11800Nm 3 The granularity of the quartz stone is 15mm, the nickel grade of the cooling material is 2%, and operations such as slag discharge and the like are carried out to obtain a high-nickel matte melt;
step three, casting the nickel anode plate
Feeding the high-nickel matte melt into a holding furnace, discharging the high-nickel matte melt from a discharge port of the holding furnace at the temperature of more than or equal to 1200 ℃, and casting the high-nickel matte melt into a casting mold of a linear casting machine through a launder and a casting ladle to obtain a nickel anode plate;
the number of casting molds of the linear casting machine is 112, the casting time of the linear casting machine is 65-75 min, the moving speed of the casting molds is 4.53m/min, the casting speed is 12-22.5 s/block, an intermittent operation mode is adopted, the casting temperature is not less than 950 ℃, the thickness of the obtained nickel anode plate is 50mm, and the weight of each nickel anode plate is 100kg;
step four, demoulding the nickel anode plate
Cooling the cast nickel anode plate in a casting mould to 700 ℃, demoulding, taking out, hoisting the nickel anode plate into a trolley for loading the anode plate, and sending the nickel anode plate into a heat preservation pit for heat preservation;
step five, heat preservation of the nickel anode plate
The nickel anode plate is lifted and conveyed to a heat preservation pit to be slowly cooled so as to finish the beta Ni 3 S 2 To beta' Ni 3 S 2 After the phase change is slowly cooled for 48 hours, the temperature of the anode plate is reduced to 200 ℃, and the anode plate is cooled to room temperature in the air, so that the nickel anode plate with low plate breakage rate is obtained.
Example II,
The preparation method of the nickel anode plate with low plate breakage rate comprises the following steps in sequence:
step one, reasonable proportioning
The mass ratio of nickel to copper of the materials to be fed into the furnace is 4.8:1, smelting the materials in an Australian furnace to obtain a metal melt with 28 percent of nickel content, and sending the low-grade nickel melt obtained by settling and separating in a settling electric furnace into a horizontal converter;
step two, converter blowing
The converter master control personnel set the converter blowing temperature to be controlled at 1220 ℃, control the Fe content of the nickel anode plate to be 2-4.5%, and control the feeding and the open air volume to be 11900Nm through the feeding of the low-grade nickel matte melt 3 The solvent is quartz stone, the granularity is 18mm, the nickel grade of the cooling material is 3 percent, and the operations such as slag discharge and the like are carried out to obtain high-nickel matte melt;
step three, casting the nickel anode plate
Feeding the high-nickel matte melt into a holding furnace, discharging the high-nickel matte melt from a discharge port of the holding furnace at the temperature of more than or equal to 1200 ℃, and casting the high-nickel matte melt into a casting mold of a linear casting machine through a launder and a casting ladle to obtain a nickel anode plate;
the number of casting moulds of the linear casting machine is 112, the casting time of the linear casting machine is 65-75 min for one circle, the moving speed of the casting mould is 4.53m/min, the casting speed is 12-22.5 s/block, an intermittent operation mode is adopted, the casting temperature is not less than 950 ℃, the thickness of the obtained nickel anode plate is 50mm, and the weight of each nickel anode plate is 100kg;
step four, demoulding the nickel anode plate
Cooling the cast nickel anode plate in a casting mould to 680 ℃, demoulding, taking out, hoisting the nickel anode plate into a trolley for containing the anode plate, and sending the nickel anode plate into a heat preservation pit for heat preservation;
step five, nickel anode plate heat preservation
The nickel anode plate is lifted and conveyed to a heat preservation pit to be slowly cooled so as to finish the beta Ni 3 S 2 To beta' Ni 3 S 2 After the phase change is slowly cooled for 48 hours, the temperature of the anode plate is reduced to 180 ℃, and the anode plate is cooled to room temperature in the air, so that the nickel anode plate with low plate breakage rate is obtained.
Example III,
The preparation method of the nickel anode plate with low plate breakage rate comprises the following steps in sequence:
step one, reasonable proportioning
The mass ratio of nickel to copper of the materials fed into the furnace is 5.0:1, smelting the materials in an Australian furnace to obtain a metal melt with 29 percent of nickel content, and sending the low-grade nickel melt obtained by settling and separating the metal melt in a settling electric furnace into a horizontal converter;
step two, converter blowing
The converter master control personnel set the converter blowing temperature to be controlled at 1230 ℃, control the Fe content of the nickel anode plate to be 2-4.5 percent, and control the feeding and the open air volume to be 11950Nm through the feeding of the low-grade nickel matte melt 3 The solvent is quartz stone, the granularity is 19mm, the nickel grade of the cooling material is 4 percent, and the operations of slag discharge and the like are carried out to obtain high-nickel matte melt;
step three, casting the nickel anode plate
Feeding the high-nickel matte melt into a holding furnace, discharging the high-nickel matte melt from a discharge port of the holding furnace at the temperature of more than or equal to 1200 ℃, and casting the high-nickel matte melt into a casting mold of a linear casting machine through a launder and a casting ladle to obtain a nickel anode plate;
the number of casting molds of the linear casting machine is 112, the casting time of the linear casting machine is 65-75 min, the moving speed of the casting molds is 4.53m/min, the casting speed is 12-22.5 s/block, an intermittent operation mode is adopted, the casting temperature is not less than 950 ℃, the thickness of the obtained nickel anode plate is 50mm, and the weight of each nickel anode plate is 100kg;
step four, demoulding the nickel anode plate
Cooling the cast nickel anode plate in a casting mold to 650 ℃, demolding, taking out, hoisting the nickel anode plate into a trolley for loading the anode plate, and conveying the nickel anode plate into a heat preservation pit for heat preservation;
step five, heat preservation of the nickel anode plate
The nickel anode plate is lifted and conveyed to a heat preservation pit to be slowly cooled so as to finish the beta Ni 3 S 2 To beta' Ni 3 S 2 After the nickel anode plate is slowly cooled for 48 hours, the temperature of the anode plate is reduced to 150 ℃, and the nickel anode plate is cooled to room temperature in the air, so that the nickel anode plate with low plate breakage rate is obtained.
Examples IV,
The preparation method of the nickel anode plate with the low plate breakage rate comprises the following steps in sequence:
step one, reasonably preparing materials, namely mixing the materials fed into a furnace with the nickel-copper mass ratio of 5.5:1, smelting the materials in an Australian furnace to obtain a metal melt with 29 percent of nickel content, and sending the low-grade nickel melt obtained by settling and separating the metal melt in a settling electric furnace into a horizontal converter;
step two, converter blowing
The converter master control personnel set the converter blowing temperature to be controlled at 1250 ℃, control the Fe content of the nickel anode plate to be 2-4.5 percent, and feed the low-grade nickel matte melt and open air volume to be 12000Nm 3 The solvent is quartz stone, the granularity is 20mm, the nickel grade of the cooling material is 5 percent, and the operations such as slag discharge and the like are carried out to obtain high-nickel matte melt;
step three, casting the nickel anode plate
Feeding the high-nickel matte melt into a holding furnace, discharging the high-nickel matte melt from a discharge port of the holding furnace at the temperature of more than or equal to 1200 ℃, and casting the high-nickel matte melt into a casting mold of a linear casting machine through a launder and a casting ladle to obtain a nickel anode plate;
the number of casting moulds of the linear casting machine is 112, the casting time of the linear casting machine is 65-75 min for one circle, the moving speed of the casting mould is 4.53m/min, the casting speed is 12-22.5 s/block, an intermittent operation mode is adopted, the casting temperature is not less than 950 ℃, the thickness of the obtained nickel anode plate is 50mm, and the weight of each nickel anode plate is 100kg;
step four, demoulding the nickel anode plate
Cooling the cast nickel anode plate in a casting mold to 650 ℃, demolding, taking out, hoisting the nickel anode plate into a trolley for loading the anode plate, and conveying the nickel anode plate into a heat preservation pit for heat preservation;
step five, nickel anode plate heat preservation
The nickel anode plate is lifted and conveyed to a heat preservation pit to be slowly cooled so as to finish the beta Ni 3 S 2 To beta' Ni 3 S 2 After the phase change is slowly cooled for 48 hours, the temperature of the anode plate is reduced to 150 ℃, and the anode plate is cooled to room temperature in the air, so that the nickel anode plate with low plate breakage rate is obtained.
Claims (3)
1. A preparation method of a nickel anode plate with low plate breakage rate is characterized by comprising the following steps: comprises the following steps which are sequentially carried out,
step one, batching
Controlling the mass ratio of nickel to copper of the materials fed into the furnace to be 4.5:1, putting the mixture into an Ausmelt furnace, smelting the mixture in the Ausmelt furnace to obtain a metal melt with the nickel content of 28-29%, and sending the low-ice nickel melt obtained by settling and separating the metal melt in a settling electric furnace into a horizontal converter;
step two, blowing in a horizontal converter
The master control personnel of the converter set the temperature of the horizontal converter, and then the feeding and the blowing air quantity of the low ice nickel melt are 11800Nm 3 /h～12000Nm 3 Adding quartz with the granularity of 15-20 mm, adding cold material with the nickel grade of 2-5 percent, and performing slag discharge operation to obtain high-nickel matte melt;
step three, casting the nickel anode plate
Sending the high-nickel matte melt into a heat preservation furnace, discharging the high-nickel matte melt from a discharge port of the heat preservation furnace, and casting the high-nickel matte melt into a casting mold of a linear casting machine through a launder and a casting ladle to obtain a nickel anode plate;
step four, demoulding the nickel anode plate
Cooling the cast nickel anode plate in a casting mould to 650-700 ℃, demoulding, taking out, hoisting the nickel anode plate into a trolley for loading the anode plate, and sending the nickel anode plate into a heat preservation pit for heat preservation;
step five, nickel anode plate heat preservation
Hoisting the nickel anode plate into the heat preservation pit for slow cooling to finish the beta Ni 3 S 2 To beta' Ni 3 S 2 After the nickel anode plate is slowly cooled for 48 hours, the temperature of the anode plate is reduced to 150-200 ℃, and then the nickel anode plate is cooled to room temperature in the air, so that the nickel anode plate with low plate breakage rate is obtained.
2. The method for preparing the nickel anode plate with low plate breakage rate as claimed in claim 1, wherein the method comprises the following steps: the temperature of the horizontal converter is set to be 1200-1250 ℃.
3. The method for preparing a nickel anode plate with low plate breakage rate as claimed in claim 1, wherein the method comprises the following steps: the thickness of the nickel anode plate obtained in the third step is 50mm, and the weight of each nickel anode plate is 100kg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210978101.0A CN115369261A (en) | 2022-08-16 | 2022-08-16 | Preparation method of nickel anode plate with low plate breakage rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210978101.0A CN115369261A (en) | 2022-08-16 | 2022-08-16 | Preparation method of nickel anode plate with low plate breakage rate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115369261A true CN115369261A (en) | 2022-11-22 |
Family
ID=84066349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210978101.0A Pending CN115369261A (en) | 2022-08-16 | 2022-08-16 | Preparation method of nickel anode plate with low plate breakage rate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115369261A (en) |
-
2022
- 2022-08-16 CN CN202210978101.0A patent/CN115369261A/en active Pending
Non-Patent Citations (2)
| Title |
|---|
| 司俊起等: "吉恩镍业转炉吹炼生产高冰镍生产实践", 中国有色冶金, pages 30 - 33 * |
| 邓文基等: "金川新型镍反射炉熔铸工艺的设计与投产", 有色冶炼, pages 37 - 40 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101748282B (en) | Electric slag liquid pouring method | |
| US20140102660A1 (en) | Combined furnace system for fire refining red impure copper | |
| CN102583389A (en) | Method for purifying industrial silicon through external refining | |
| CN110042238B (en) | Production method of high-quality FeV50 alloy | |
| CN110964916A (en) | Two-motor two-flow electron beam cooling bed smelting furnace | |
| CN111378850A (en) | Method for purifying high-purity aluminum by segregation | |
| CN101199991B (en) | Gravitational vacuum suction casting forming method | |
| CN102274955A (en) | Nitrogen protective oxygen-insulated whole-course quick cooling casting process and system for anode plates | |
| CN113560560B (en) | Aluminum liquid casting system and aluminum liquid casting method | |
| CN102851561A (en) | Lithium boron alloy production process, and device thereof | |
| CN114540729A (en) | Method for preparing alloy ingot for copper-chromium contact by adopting suspension smelting down-drawing process | |
| CN204185539U (en) | A kind of device of stokehold process titanium slag | |
| CN115369261A (en) | Preparation method of nickel anode plate with low plate breakage rate | |
| CN110607459B (en) | Method for converting high-grade matte by using horizontal converter | |
| CN114273629B (en) | Continuous casting device for metal composite material | |
| CN110195140A (en) | A kind of method of high-purity reduced iron vacuum melting vertical continuous casting production melting pure iron | |
| CN111591996B (en) | Method for preparing industrial silicon by using ferrosilicon | |
| CN115896603A (en) | Iron-copper-rare earth intermediate alloy and preparation method thereof | |
| CN109047685A (en) | A method of preparing steel ingot | |
| CN110616340B (en) | Method for preparing titanium ingot by hydrogenation and dehydrogenation of high-oxygen titanium reclaimed material | |
| CN109226729B (en) | Device and method for realizing continuous casting of vacuum induction furnace | |
| CN104190896A (en) | Electric arc smelting pressure casting method for amorphous alloy | |
| CN113686150A (en) | Automatic feeding system and vacuum induction smelting furnace | |
| CN211497740U (en) | Two-motor two-flow electron beam cooling bed smelting furnace | |
| CN111270081A (en) | Method for controlling gas element content in 9Ni steel ingot of more than 40 tons |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |