CN-122006693-A - Method for producing nickel-chromium-iron alloy

Abstract

The invention discloses a method for producing nickel-chromium-iron alloy, belonging to the technical field of metal smelting. According to the invention, the smelting catalyst consisting of tantalum powder and yttrium nitride is used in the smelting process of the nickel-chromium-iron alloy, so that the reduction of power consumption is realized while the quality of a smelting product is not influenced, the problem of high energy consumption in the smelting process caused by high melting points of nickel, chromium and iron serving as main components in the nickel-chromium-iron alloy in the traditional process is solved, the energy conservation and consumption reduction are realized through the improvement of the technology, the green production and transformation upgrading of enterprises are facilitated, and the economic value and the social benefit are important.

Inventors

• LIU HONGSONG
• SHI JIATING
• Ma Shanguang

Assignees

• 山东鑫海科技股份有限公司

Dates

Publication Date

20260512

Application Date

20251226

Claims (9)

1. 1. A smelting catalyst for producing nickel-chromium-iron alloy is characterized in that the mass ratio of tantalum powder to yttrium nitride in the smelting catalyst is (0.5-0.75) kg.
2. 2. The smelting catalyst according to claim 1, wherein the tantalum powder is spherical and has a particle size of 50 to 200 μm.
3. 3. The smelting catalyst according to claim 1, wherein the yttrium nitride is polyhedral and has a specification of 100 to 300 mesh.
4. 4. Use of a smelting catalyst according to any one of claims 1 to 3 in the production of nichrome.
5. 5. A method for producing a nichrome, characterized by adding the smelting catalyst of any one of claims 1-3 to a base material, extruding into ore spheres, and heating for solidification to obtain a smelting material; The basic raw materials comprise nickel ore, chrome ore and iron ore.
6. 6. The method according to claim 5, wherein the nickel ore is laterite nickel ore, the chromium ore is olivine, the iron ore is hematite, and the mass ratio of laterite nickel ore, olivine and hematite ore is 10-20kg:10-30kg:3000-4000kg.
7. 7. The method according to claim 6, wherein the mass ratio of the base stock and the smelting catalyst is (4-5) t (1-2) kg.
8. 8. The method according to claim 6, wherein the smelting temperature is 1500-2500 ℃ and the smelting time is 3-10 hours.
9. 9. Use of the method of any one of claims 5-8 in the production of nichrome.

Description

Method for producing nickel-chromium-iron alloy Technical Field The invention relates to the technical field of metal smelting, in particular to a method for producing nickel-chromium-iron alloy. Background The ore-smelting furnace is also called as electric arc furnace or electric resistance furnace, and is mainly used for reducing and smelting raw materials of ore, carbonaceous reducing agent, solvent and the like, and is mainly used for producing ferroalloys of ferrosilicon, ferromanganese, ferrochrome, ferrotungsten, ferrosilicomanganese and the like, and is important industrial equipment in metallurgical industry. The main components of the nickel-chromium-iron alloy are nickel, chromium and iron, and simultaneously contain Si, S, P, C and other impurity elements. Nickel has good mechanical, physical and chemical properties, and adding nickel to iron can improve the oxidation resistance, corrosion resistance, high temperature strength and improve certain physical properties of the alloy. Compared with metallic nickel, the specific strength (the ratio of strength to density) of metallic chromium is high, and the addition of nickel to iron can lead the alloy to have good oxidation resistance and high-sulfur and seawater corrosion resistance. The nickel-chromium-iron alloy is a main stainless steel variety, is widely applied due to the excellent comprehensive performance, and the yield of the nickel-chromium-iron alloy is 60% -75% of the total yield of the stainless steel. However, the melting points of nickel, chromium and iron which are main components in the nickel-chromium-iron alloy are higher than 1450 ℃, so that the energy consumption is high in the smelting process, and the problem of important attention in the transformation upgrading process of enterprises is solved by improving the technology. Disclosure of Invention In view of the above prior art, it is an object of the present invention to provide a method for producing nichrome. In order to achieve the above purpose, the invention adopts the following technical scheme: In a first aspect of the invention, a smelting catalyst for producing nickel-chromium-iron alloy is provided, wherein the smelting catalyst comprises (0.5-0.75) kg of tantalum powder and yttrium nitride. Further, the tantalum powder is spherical and has a particle size of 50-200 microns. Further, the yttrium nitride is polyhedral and has a specification of 100-300 meshes. In a second aspect, the invention provides the application of the smelting catalyst in nickel-chromium-iron alloy production. In a third aspect of the invention, a method for producing nickel-chromium-iron alloy is provided, wherein the smelting catalyst is added into a basic raw material, extruded into ore spheres, and heated and solidified to be used as a smelting raw material; The basic raw materials comprise nickel ore, chrome ore and iron ore. Further, in the basic raw material, the nickel ore is laterite nickel ore, the chromium ore is olivine, the iron ore is hematite, and the mass ratio of the laterite nickel ore to the olivine to the hematite is 10-20kg:10-30kg:3000-4000kg. Further, the mass ratio of the base raw material to the smelting catalyst is (4-5) t (1-2) kg. Further, the smelting temperature is 1500-2500 ℃, and the smelting time is 3-10 hours. In a fourth aspect of the invention, there is provided the use of the method in the production of nichrome. The invention has the beneficial effects that: According to the invention, the smelting catalyst consisting of tantalum powder and yttrium nitride is used in the smelting process of the nickel-chromium-iron alloy, so that the reduction of power consumption is realized while the quality of a smelting product is not influenced, the problem of high energy consumption in the smelting process caused by high melting points of nickel, chromium and iron serving as main components in the nickel-chromium-iron alloy in the traditional process is solved, the energy conservation and consumption reduction are realized through the improvement of the technology, the green production and transformation upgrading of enterprises are facilitated, and the economic value and the social benefit are important. Detailed Description It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. In order to enable those skilled in the art to more clearly understand the technical scheme of the present application, the technical scheme of the present application will be described in detail with reference to specific embodiments. The test materials used in the examples of the present invention, which are not specifically described, are all conventional in the art and are commercially available. The tantalum powde