CN116219182A - Manganese additive and preparation method thereof - Google Patents
Manganese additive and preparation method thereof Download PDFInfo
- Publication number
- CN116219182A CN116219182A CN202310007640.4A CN202310007640A CN116219182A CN 116219182 A CN116219182 A CN 116219182A CN 202310007640 A CN202310007640 A CN 202310007640A CN 116219182 A CN116219182 A CN 116219182A
- Authority
- CN
- China
- Prior art keywords
- manganese
- vacuum induction
- smelting device
- induction smelting
- vacuum
- 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
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
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/04—Refining by applying a vacuum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0006—Adding metallic additives
-
- 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
- C22B9/006—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals with use of an inert protective material including the use of an inert gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/041—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by mechanical alloying, e.g. blending, milling
-
- 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
- Y02P10/25—Process efficiency
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a preparation method of a manganese additive, wherein the chemical purity of the manganese additive is higher than 99.9%, and the preparation method comprises the following steps: s1, providing a vacuum induction smelting device; s2, transferring the electrolytic manganese metal into the vacuum induction smelting device, performing vacuum treatment on the vacuum induction smelting device, and filling inert gas into the vacuum induction smelting device until absolute air pressure is positive; s3, gradient increasing induction power at a rate of 1kW/min until the electrolytic manganese metal is completely melted to be in a liquid state, stirring for 2-10 min, and standing for 10-20 min; s4, cooling the liquid manganese to room temperature, crushing and screening to obtain the manganese additive. According to the preparation method, light metals such as sulfur, selenium, chlorine, magnesium, aluminum and the like and gas impurities are removed through vacuum induction smelting, meanwhile, manganese metal is densified, the specific surface area is reduced, adsorbed gas impurities are reduced, and the product quality is improved; simple operation, wide process range and wide applicability.
Description
Technical Field
The invention relates to the technical field of vacuum induction melting, in particular to a manganese additive and a preparation method thereof.
Background
Manganese is widely found in nature, for example: the soil contains 0.25% of manganese, and is ferrous metal with reserve next to iron element. The electrolytic manganese metal refers to elemental metal separated out by electrolysis after manganese ore is leached by acid to obtain manganese salt. The manganese content in the electrolytic manganese metal is more than 99.5%, the electrolytic manganese metal is silvery white or gray, has hard and brittle texture, is easy to oxidize in a humid environment, can increase the hardness of alloy materials due to high purity and low impurities, and can be widely used as an additive in the fields of iron and steel smelting, chemical industry, electronic technology, aerospace industry, nonferrous metallurgy and the like.
Along with the development of industry and technology upgrading iteration, the requirement of the high-end manufacturing field on manganese additives is higher and higher, the chemical purity of conventional industrial electrolytic manganese metal in China is 99.7% -99.9%, but the requirements cannot be met, and particularly, impurity elements such as sulfur (about 0.04%), selenium (about 0.1%), hydrogen (about 0.02%) and the like contained in the conventional industrial electrolytic manganese metal seriously influence the quality of the high-end alloy, so that the manganese product is required to be upgraded.
At present, the purification and upgrading are mainly carried out by improving the electrolysis mode, but additives such as sulfur or selenium dioxide and the like are inevitably added back, so that sulfur and selenium element are seriously out of standard, and meanwhile, the product inevitably contains hydrogen element and cannot meet the use requirement of high-end alloy.
Thus, there is a need for a manganese additive and a method of preparing the same.
Disclosure of Invention
The invention aims at overcoming the defects in the prior art and provides a manganese additive and a preparation method thereof.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
in a first aspect, the present invention provides a method for preparing a manganese additive having a chemical purity of greater than 99.9%, comprising the steps of:
s1, providing a vacuum induction smelting device;
s2, transferring the electrolytic manganese metal into the vacuum induction smelting device, performing vacuum treatment on the vacuum induction smelting device, and filling inert gas into the vacuum induction smelting device until absolute air pressure is positive;
s3, gradient increasing induction power at a rate of 1kW/min until the electrolytic manganese metal is completely melted to be in a liquid state, stirring for 2-10 min, and standing for 10-20 min;
s4, cooling the liquid manganese to room temperature, crushing and screening to obtain the manganese additive.
Preferably, the crucible in the vacuum induction melting apparatus is made of magnesium oxide or water-cooled copper.
Preferably, the vacuum treatment comprises: absolute air pressure in the vacuum induction smelting device is not higher than 0.05Pa.
Preferably, the inert gas includes: argon gas.
Preferably, inert gas is filled into the vacuum induction smelting device until the absolute pressure is 10kPa-20kPa.
Preferably, when the induction power is increased to 40kW, the electrolytic manganese metal starts to melt to be in a liquid state, and after the induction power is increased to 50kW, the electrolytic manganese metal is stirred for 2-10 min.
Preferably, the cooling is water-cooling.
In a second aspect the invention provides a manganese additive obtainable by a process as hereinbefore described.
Compared with the prior art, the invention has the following technical effects:
according to the preparation method, light metals such as sulfur, selenium, chlorine, magnesium, aluminum and the like and gas impurities are removed through vacuum induction smelting, meanwhile, manganese metal is densified, the specific surface area is reduced, adsorbed gas impurities are reduced, and the product quality is improved; the crucible material does not pollute the material, and the vacuum induction melting has high heating speed and low overall energy consumption, thereby being beneficial to reducing the cost; the inert gas can avoid oxidation of manganese at high temperature, can avoid volatilization of manganese under smelting pressure, and simultaneously keeps a good vacuum refining effect, so that the product yield is improved; stirring can fully refine and remove impurities, and the uniformity of materials is maintained; the water cooling can quickly cool, so that pollution caused by heat diffusion is reduced, the production efficiency is improved, and the cost is reduced; based on the characteristics of manganese, namely hard and brittle, the jaw crushing can effectively crush manganese into particles, and is convenient to use as an additive; the whole operation is simple, the process range is wide, and the applicability is wide.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is shown, however, only some, but not all embodiments of the invention are shown. 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.
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
The invention will be further illustrated, but is not limited, by the following examples.
Examples
In a first aspect, the present invention provides a method for preparing a manganese additive having a chemical purity of greater than 99.9%, comprising the steps of:
s1, providing a vacuum induction melting furnace;
s2, transferring 50kg of electrolytic manganese metal into a water-cooled copper crucible of the vacuum induction smelting furnace, performing vacuum treatment on the vacuum induction smelting furnace (the absolute air pressure in the vacuum induction smelting furnace is not higher than 0.05 Pa), and filling argon into the vacuum induction smelting furnace until the absolute air pressure is 10kPa;
s3, gradient-increasing induction power at a rate of 10kW/10min, when the induction power is increased to 40kW, starting to melt the electrolytic manganese metal, and stirring for 5min and standing for 15min after the induction power is increased to 50kW (the temperature is 1250 ℃ through double colorimetric measurement);
s4, transferring liquid manganese into a water-cooled steel ingot mould, cooling to room temperature, transferring a manganese ingot into a jaw crusher, crushing to the required granularity, screening according to the requirement, and packaging to obtain the manganese additive, wherein the manganese additive is shown in the following table:
according to the table, after the electrolytic manganese metal is smelted by vacuum induction, S, se, H, O and other impurities are greatly reduced, and the requirement of additives for high-end alloys is met.
In summary, according to the preparation method disclosed by the invention, light metals and gas impurities such as sulfur, selenium, chlorine, magnesium, aluminum and the like are removed through vacuum induction smelting, meanwhile, manganese metal is densified, the specific surface area is reduced, the adsorbed gas impurities are reduced, and the product quality is improved; the crucible material does not pollute the material, and the vacuum induction melting has high heating speed and low overall energy consumption, thereby being beneficial to reducing the cost; the inert gas can avoid oxidation of manganese at high temperature, can avoid volatilization of manganese under smelting pressure, and simultaneously keeps a good vacuum refining effect, so that the product yield is improved; stirring can fully refine and remove impurities, and the uniformity of materials is maintained; the water cooling can quickly cool, so that pollution caused by heat diffusion is reduced, the production efficiency is improved, and the cost is reduced; based on the characteristics of manganese, namely hard and brittle, the jaw crushing can effectively crush manganese into particles, and is convenient to use as an additive; the whole operation is simple, the process range is wide, and the applicability is wide.
The foregoing description is only illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, and it will be appreciated by those skilled in the art that equivalent substitutions and obvious variations may be made using the teachings of the present invention, which are intended to be included within the scope of the invention.
Claims (8)
1. A method for preparing a manganese additive having a chemical purity of greater than 99.9%, comprising the steps of:
s1, providing a vacuum induction smelting device;
s2, transferring the electrolytic manganese metal into the vacuum induction smelting device, performing vacuum treatment on the vacuum induction smelting device, and filling inert gas into the vacuum induction smelting device until absolute air pressure is positive;
s3, gradient increasing induction power at a rate of 1kW/min until the electrolytic manganese metal is completely melted to be in a liquid state, stirring for 2-10 min, and standing for 10-20 min;
s4, cooling the liquid manganese to room temperature, crushing and screening to obtain the manganese additive.
2. The method according to claim 1, wherein the crucible in the vacuum induction melting apparatus is made of magnesium oxide or water-cooled copper.
3. The method of manufacturing according to claim 1, wherein the vacuum treatment comprises: absolute air pressure in the vacuum induction smelting device is not higher than 0.05Pa.
4. The method of manufacturing according to claim 1, wherein the inert gas comprises: argon gas.
5. The production method according to claim 1, wherein the inert gas is charged into the vacuum induction melting apparatus to an absolute pressure of 10kPa to 20kPa.
6. The method according to claim 1, wherein when the induction power is raised to 40kW, the electrolytic manganese metal starts to melt to a liquid state, and after the induction power is raised to 50kW, the mixture is stirred for 2 to 10 minutes.
7. The method of claim 1, wherein the cooling is water-cooling.
8. A manganese additive produced by the method of any one of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310007640.4A CN116219182A (en) | 2023-01-04 | 2023-01-04 | Manganese additive and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310007640.4A CN116219182A (en) | 2023-01-04 | 2023-01-04 | Manganese additive and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116219182A true CN116219182A (en) | 2023-06-06 |
Family
ID=86590275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310007640.4A Pending CN116219182A (en) | 2023-01-04 | 2023-01-04 | Manganese additive and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116219182A (en) |
-
2023
- 2023-01-04 CN CN202310007640.4A patent/CN116219182A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103276261A (en) | Preparation method of high-conductivity aluminum alloy | |
| JP2004537491A (en) | High-purity metallic silicon and its smelting method | |
| CN111826545B (en) | Copper-iron alloy material and preparation method and application thereof | |
| CN110629076B (en) | High-conductivity aluminum alloy rod material and preparation method thereof | |
| CN102212712A (en) | Beryllium copper alloy, copper bush for amorphous and/or nano crystal strip production equipment and preparation method | |
| CN115216637A (en) | Preparation method of alloy ingot for precise kovar alloy foil | |
| CN105525117A (en) | Aluminum alloy material capable of being used for manufacturing cylinder cover and preparation method for aluminum alloy material | |
| CN1271024A (en) | Preparation of boronic aluminium alloy with high conductivity | |
| Meng et al. | Enrichment and separation behaviors of impurities from stripped copper wire with super-gravity fields | |
| CN112063866B (en) | Method for preparing aluminum-scandium alloy with high scandium content | |
| CN113234945A (en) | Titanium-nickel shape memory alloy target material and preparation method thereof | |
| CN111809051A (en) | Refining and purifying method of beryllium copper waste residue | |
| CN116219182A (en) | Manganese additive and preparation method thereof | |
| CN113502408B (en) | High-conductivity copper alloy containing tellurium and nickel and preparation method thereof | |
| CN113265558B (en) | Copper-iron alloy with excellent bending resistance and processing method thereof | |
| CN111809074B (en) | Lanthanum-carbon-magnesium composite material, tellurium-copper alloy material and preparation method thereof | |
| CN114737089A (en) | Aluminum alloy material and preparation method and application thereof | |
| CN110616338B (en) | Impurity removal method for copper melt and preparation method for high-purity high-conductivity copper | |
| CN111411245A (en) | Preparation method of high-silicon aluminum silicon intermediate alloy ingot | |
| CN112030046A (en) | Aluminum alloy material for manufacturing mobile phone frame | |
| CN105018800A (en) | Aluminum alloy material with good high-temperature resistance for cylinder head and preparation method of aluminum alloy material | |
| CN104556044A (en) | Method for quickly removing boron from silicon by introducing gas to Al-Si alloy | |
| CN104862547A (en) | High-strength aluminum alloy material for engine cylinder cover and manufacturing method of material | |
| CN115572843B (en) | Preparation method of high-purity metal tantalum | |
| CN116987976B (en) | Iron-nickel-based precise alloy material for FMM mask, alloy strip and smelting method |
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 |