CN114606431A - Process for producing low-carbon ferromanganese by using induction furnace - Google Patents
Process for producing low-carbon ferromanganese by using induction furnace Download PDFInfo
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- CN114606431A CN114606431A CN202210199116.7A CN202210199116A CN114606431A CN 114606431 A CN114606431 A CN 114606431A CN 202210199116 A CN202210199116 A CN 202210199116A CN 114606431 A CN114606431 A CN 114606431A
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- induction furnace
- manganese
- induction
- heating
- carbon ferromanganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
- C22C33/06—Making ferrous alloys by melting using master alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C22/00—Alloys based on manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C35/00—Master alloys for iron or steel
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
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Abstract
The invention provides a process for producing low-carbon ferromanganese by using an induction furnace, which comprises the following steps: adding production raw materials of manganese-silicon alloy and manganese ore into an induction furnace, electrifying the induction furnace, heating the induction furnace, and melting the manganese-silicon alloy and the manganese ore in the induction furnace; the induction furnace is induction heating equipment which has the highest heating efficiency and the fastest heating speed to metal materials, has low energy consumption and environmental protection, greatly reduces the production cost, can achieve the aim of adjusting and controlling the power supply time and power during working, is convenient to adjust and control, converts electric energy into heat energy through electromagnetic induction, and generates strong stirring when materials formed by the melted materials are acted by electromagnetic force.
Description
Technical Field
The invention relates to an alloy smelting method, in particular to a process for producing low-carbon ferromanganese by using an induction furnace.
Background
The raw materials for producing the low-carbon ferromanganese comprise manganese-silicon alloy, manganese ore, lime, fluorite and the like, and the raw materials adopted by the oxygen blowing decarburization method are mainly high-carbon ferromanganese. In order to produce low-carbon ferromanganese meeting the standard requirements, good technical and economic indexes are obtained, and all raw materials must meet certain quality requirements. The main methods for producing the low-carbon ferromanganese include an electro-silicothermic method, a rocking furnace production method, an oxygen blowing production method, a Boren method and a Udakang rotary furnace method. The raw material requirements are as follows: the production of medium-low carbon ferromanganese mainly based on an electro-silicothermic method and a rocking furnace method of the silicon-manganese alloy requires the use of the manganese-silicon alloy; manganese ore and low-carbon ferromanganese production have requirements on manganese ore that the ferromanganese ratio is high, the phosphorus-manganese ratio is low, and the silicon dioxide content is low; lime, wherein the lime for smelting the low-carbon ferromanganese requires that the content of calcium oxide is more than 85 percent, and the content of the granularity of 10-60 mm in the furnace is more than 80 percent.
The induction furnace is an induction heating device which has the highest heating efficiency and the fastest heating speed to metal materials, has low energy consumption and environmental protection, and high-frequency large current flows to a heating coil which is wound into a ring shape or other shapes. As a result, a strong magnetic flux whose polarity is instantaneously changed is generated in the coil, and when an object to be heated such as a metal is placed in the coil, the magnetic flux penetrates the entire object to be heated, and a large eddy current is generated in the opposite direction to the heating current in the object to be heated. Since the resistance exists in the object to be heated, a large amount of joule heat is generated to rapidly raise the temperature of the object itself, thereby achieving the purpose of heating all metal materials.
Disclosure of Invention
The present invention has been made to solve the above problems occurring in the prior art, and an object of the present invention is to provide a process for producing low carbon ferromanganese using an induction furnace, which has high heating efficiency and high heating speed when in use.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: a process for producing low-carbon ferromanganese by using an induction furnace comprises the following steps: adding manganese-silicon alloy and manganese ore which are raw materials into an induction furnace, electrifying the induction furnace, heating the induction furnace, and melting the manganese-silicon alloy and the manganese ore in the induction furnace; after melting, adding lime into the induction furnace according to the amount of manganese-silicon alloy and manganese ore in the induction furnace, adjusting the alkalinity of slag in the induction furnace to 1.4-1.6, and continuously heating and refining the induction furnace, wherein the power of the induction furnace is 1500-6000 kilovolt-ampere; after the refining is finished, pouring out slag on the surface; and after the sampling detection is qualified, casting the alloy in the induction furnace to obtain a finished product.
As an improvement, the temperature of the induction furnace is 1400-1700 ℃.
As an improvement, the manganese content of the produced low-carbon ferromanganese is 72-95%, and the iron content is 5-25%.
As an improvement, the produced low-carbon ferromanganese contains 0.05-0.5% of carbon.
The invention has the beneficial effects that: the induction furnace is energy-saving environment-friendly induction heating equipment with highest heating efficiency and fastest heating speed on metal materials, low consumption, production cost is greatly reduced, the temperature can be adjusted and controlled by adjusting and controlling power supply time and power during working, adjustment and control are convenient, the induction furnace converts electric energy into heat energy through electromagnetic induction, heats, melts and heats materials, the materials formed by the melted materials are intensively stirred under the action of electromagnetic force, the materials are quickly melted, the burning loss of alloy elements is less, the strong stirring is also beneficial to deoxidation, degasification, inclusion removal and the like, the purity of the materials is high, chemical components are easy to adjust and good in component uniformity control, the induction furnace does not have the phenomena of recarburization and resulfurization in the melting process, the melting process can be slagged to cover the molten iron, and silicon in the molten iron can be prevented to a certain extent, Manganese and alloy elements are oxidized, and the absorption of gas from furnace gas by molten iron is reduced, so that the molten iron is relatively pure, and the temperature control system can realize accurate control on temperature and improve the product quality and the qualification rate.
Detailed Description
The invention is illustrated below by means of specific examples, without being restricted thereto.
The production process specifically comprises the following steps:
adding raw materials of manganese-silicon alloy and manganese ore required by production into an induction furnace, electrifying the induction furnace, heating the raw materials of manganese-silicon alloy and manganese ore in the induction furnace, and carrying out melting operation, wherein the temperature of the induction furnace is controlled to be 1400-1700 ℃ in the heating process, the power of the induction furnace is 1500-6000 kilovolt-ampere, and the induction furnace melts the manganese-silicon alloy and the manganese ore inside; after melting, adding a certain amount of lime into the induction furnace according to the amount of manganese-silicon alloy and manganese ore in the induction furnace, wherein the ratio is controlled to be 1: 0.5-1: 2, adjusting the alkalinity of the manganese-silicon alloy and the manganese ore melted in the induction furnace to 1.4-1.6 by lime put into the induction furnace, and continuously heating and refining the induction furnace; the refining time is about 10 minutes, and after the refining is finished, slag on the surface of the induction furnace is poured out through a machine; sampling and detecting the smelted alloy, and pouring the alloy in the induction furnace to obtain a finished product after the alloy is qualified, wherein the manganese content in the produced low-carbon ferromanganese is 72-95%, the iron content is 5-25%, and the carbon content is 0.05-0.5%.
When the invention works, the smelting of the induction furnace has the advantages that the phenomena of carburetion and sulfur increase are avoided in the smelting process, the smelting process can cover molten iron by slagging, the oxidation of silicon, manganese and alloy elements in the molten iron can be prevented to a certain extent, and the absorption of gas from furnace gas by the molten iron is reduced, so that the molten iron is relatively pure. The induction furnace has the advantages of high heating speed, high production efficiency, less oxidation and decarburization, material saving and forging die cost saving, uniform heating in the heating mode, and extremely small temperature difference of a core surface, so that the service life of the forging die is greatly prolonged in the forging aspect, and the roughness of the surface of a forging piece is less than 50 mu m; the induction heating furnace has the advantages that the heating is uniform, the temperature difference of the core surface is extremely small, the temperature control precision is high, compared with a coal furnace, workers can not be baked and smoked by the coal furnace under burning sun, the requirements of various indexes of an environmental protection department can be met, and the induction heating is a most energy-saving heating mode in the electric heating furnace, wherein the power consumption of a ton forged piece heated from room temperature to 1100 ℃ is less than 360 ℃; the heating is even, and the core table difference in temperature is minimum, and the control by temperature change precision is high, so the heating is even so its heat self produces in the work piece of induction heating, and the core table difference in temperature is minimum, and application temperature control system can realize improving product quality and qualification rate to the accurate control of temperature.
The induction furnace is induction heating equipment which has the highest heating efficiency and the fastest heating speed for metal materials, has low energy consumption and environmental protection, greatly reduces the production cost, can achieve the aim of adjusting and controlling the power supply time and power during working, is convenient to adjust and control, converts electric energy into heat energy through electromagnetic induction, heats, melts and heats the materials, and the materials formed by the melted materials are intensively stirred under the action of electromagnetic force, so that the materials are quickly melted, the burning loss of alloy elements is less, the strong stirring is also beneficial to deoxidation, degassing, inclusion removal and the like, the material purity is high, the chemical components are easy to adjust, and the uniformity of the control components is good.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (4)
1. A process for producing low-carbon ferromanganese by using an induction furnace is characterized by comprising the following steps:
(1) adding manganese-silicon alloy and manganese ore which are raw materials into an induction furnace, electrifying the induction furnace, heating the induction furnace, and melting the manganese-silicon alloy and the manganese ore in the induction furnace;
(2) after melting, adding lime into the induction furnace according to the amount of manganese-silicon alloy and manganese ore in the induction furnace, adjusting the alkalinity of slag in the induction furnace to 1.4-1.6, and continuously heating and refining the induction furnace, wherein the power of the induction furnace is 1500-6000 kilovolt-ampere;
(3) after the refining is finished, pouring out slag on the surface;
(4) and after the sampling detection is qualified, casting the alloy in the induction furnace to obtain a finished product.
2. The process for producing low carbon ferromanganese according to claim 1, wherein the temperature of the electric induction furnace is between 1400 ℃ and 1700 ℃.
3. The process for producing low carbon ferromanganese by using an induction furnace according to claim 1, wherein the manganese content of the produced low carbon ferromanganese is 72-95% and the iron content is 5-25%.
4. The process for producing low carbon ferromanganese by using an induction furnace according to claim 1, wherein the carbon content of the produced low carbon ferromanganese is 0.05-0.5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210199116.7A CN114606431A (en) | 2022-03-02 | 2022-03-02 | Process for producing low-carbon ferromanganese by using induction furnace |
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| CN202210199116.7A CN114606431A (en) | 2022-03-02 | 2022-03-02 | Process for producing low-carbon ferromanganese by using induction furnace |
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| CN114606431A true CN114606431A (en) | 2022-06-10 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4808220A (en) * | 1987-03-11 | 1989-02-28 | Thyssen Stahl Ag | Process for the preparation of refined ferromanganese |
| CN1373231A (en) * | 2001-03-05 | 2002-10-09 | 朱兴发 | Method for smelting middle-or low-carbon ferromanganese by frequency-conversion induction furnace |
| CN1382824A (en) * | 2002-02-28 | 2002-12-04 | 湖南特种金属材料厂 | Process for preparing low-carbon ferromanganese by induction furnace |
| CN1554792A (en) * | 2003-12-25 | 2004-12-15 | 新余钢铁有限责任公司 | New process for smelting medium and low carbon ferro-mangenese by blast furnace-refining furnace method |
| CN101016596A (en) * | 2007-02-15 | 2007-08-15 | 刘巍 | Process of producing iron alloy with low carbon and manganese |
| CN105177210A (en) * | 2015-08-28 | 2015-12-23 | 钦州西北冶金设备有限公司 | Method for smelting low/simplex carbon ferromanganese |
| WO2021221528A1 (en) * | 2020-04-29 | 2021-11-04 | Vigdorchikov Oleg Valentinovich | Method of producing ingots of low-carbon ferromanganese |
-
2022
- 2022-03-02 CN CN202210199116.7A patent/CN114606431A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4808220A (en) * | 1987-03-11 | 1989-02-28 | Thyssen Stahl Ag | Process for the preparation of refined ferromanganese |
| CN1373231A (en) * | 2001-03-05 | 2002-10-09 | 朱兴发 | Method for smelting middle-or low-carbon ferromanganese by frequency-conversion induction furnace |
| CN1382824A (en) * | 2002-02-28 | 2002-12-04 | 湖南特种金属材料厂 | Process for preparing low-carbon ferromanganese by induction furnace |
| CN1554792A (en) * | 2003-12-25 | 2004-12-15 | 新余钢铁有限责任公司 | New process for smelting medium and low carbon ferro-mangenese by blast furnace-refining furnace method |
| CN101016596A (en) * | 2007-02-15 | 2007-08-15 | 刘巍 | Process of producing iron alloy with low carbon and manganese |
| CN105177210A (en) * | 2015-08-28 | 2015-12-23 | 钦州西北冶金设备有限公司 | Method for smelting low/simplex carbon ferromanganese |
| WO2021221528A1 (en) * | 2020-04-29 | 2021-11-04 | Vigdorchikov Oleg Valentinovich | Method of producing ingots of low-carbon ferromanganese |
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Application publication date: 20220610 |