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Magnetic iron powder and preparation method thereof

A technology of magnetic iron and raw materials, applied in the field of metallurgy, can solve the problems of insufficient magnetic flux of magnets, waste of resources, environmental pollution, etc., achieve good economic and social benefits, solve stockpiling problems, and improve economic benefits

Inactive Publication Date: 2019-07-19
徐州润锋新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, in the production process of cold-rolled thin plates in steel mills, the thin plates are cleaned with hydrochloric acid before galvanizing, and a large amount of ferrous chloride solution is produced. In order to protect the environment and reduce costs, steel mills calcinate ferrous chloride at high temperature and recover chlorine gas to produce Hydrochloric acid produces a large amount of iron oxide red at the same time. Due to the limitation of technological conditions, its technical indicators such as content, color, and fineness cannot meet the requirements of commercial iron oxide red. It is currently stockpiled or used with low value, causing environmental pollution and resource waste
[0003] The magnets produced by the existing magnetic iron powder usually have insufficient magnetic flux, and the produced magnets are prone to cracks in the process of production because of their poor compression resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A magnetic iron powder, the magnetic iron powder raw material is composed of the following components in parts by weight: 12.5 parts of potassium pyrosulfate, 2 parts of polypropylene, 15.5 parts of non-ferrous metallurgical slag, 2.5 parts of red mud, 10.5 parts of calcium carbide slag, iron powder 6 parts, polyethylene fiber 11 parts, sodium perborate monohydrate 5 parts, rubber resin 1.5 parts.

[0019] Further, the preparation method:

[0020] A, according to the raw material weight component screening preparation;

[0021] B. First mix potassium pyrosulfate, polypropylene, and non-ferrous metallurgical slag into the silo and connect the first mixture inlet with the first pellet outlet to obtain the first mixture and set aside;

[0022] C. Then put red mud, carbide slag, iron powder, polyethylene fiber, sodium perborate monohydrate and rubber resin into the red mud inlet through a twin-shaft mixer, and connect the carbide slag inlet and the second mixture outlet to...

Embodiment 2

[0029] A magnetic iron powder, the magnetic iron powder raw material is composed of the following components in parts by weight: 14 parts of potassium pyrosulfate, 3.5 parts of polypropylene, 16.5 parts of non-ferrous metallurgical slag, 4.5 parts of red mud, 11 parts of calcium carbide slag, iron powder 7.5 parts, polyethylene fiber 13 parts, sodium perborate monohydrate 5.5 parts, rubber resin 2.5 parts.

[0030] Further, the preparation method:

[0031] A, according to the raw material weight component screening preparation;

[0032] B. First mix potassium pyrosulfate, polypropylene, and non-ferrous metallurgical slag into the silo and connect the first mixture inlet with the first pellet outlet to obtain the first mixture and set aside;

[0033] C. Then put red mud, carbide slag, iron powder, polyethylene fiber, sodium perborate monohydrate and rubber resin into the red mud inlet through a twin-shaft mixer, and connect the carbide slag inlet and the second mixture outlet ...

Embodiment 3

[0040] A magnetic iron powder, the magnetic iron powder raw material is composed of the following components in parts by weight: 15.5 parts of potassium pyrosulfate, 5 parts of polypropylene, 17.5 parts of non-ferrous metallurgical slag, 6.5 parts of red mud, 11.5 parts of calcium carbide slag , 9 parts of iron powder, 15 parts of polyethylene fiber, 6 parts of sodium perborate monohydrate, 3.5 parts of rubber resin.

[0041] Further, the preparation method:

[0042] A, according to the raw material weight component screening preparation;

[0043] B. First mix potassium pyrosulfate, polypropylene, and non-ferrous metallurgical slag into the silo and connect the first mixture inlet with the first pellet outlet to obtain the first mixture and set aside;

[0044] C. Then put red mud, carbide slag, iron powder, polyethylene fiber, sodium perborate monohydrate and rubber resin into the red mud inlet through a twin-shaft mixer, and connect the carbide slag inlet and the second mixt...

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PUM

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Abstract

The invention discloses a preparation method of magnetic iron powder, and relates to the technical field of metallurgy. The raw material of the magnetic iron powder comprises the constituents based onparts by weight: 12.5-15.5 parts of potassium pyrosulfate, 2-5 parts of polypropylene, 15.5-17.5 parts of nonferrous metallurgy slag, 2.5-6.5 parts of red mud, 10.5-11.5 parts of carbide slag, 6-9 parts of iron powder, 11-15 parts of polyethylene fiber, 5-6 parts of sodium perborate monohydrate and 1.5-3.5 parts of rubber resin. According to the preparation method of the magnetic iron powder, various types of industrially-produced slag are comprehensively utilized, the characteristics of mass production of iron oxide powder and resource utilization can be achieved, the problem of industrial solid waste stockpiling is solved, the preparation method has favorable economic and social benefit, an environment is effectively protected, and the economic benefit is improved.

Description

technical field [0001] The invention relates to a preparation method of magnetic iron powder, and relates to the technical field of metallurgy. Background technique [0002] At present, in the production process of cold-rolled thin plates in steel mills, the thin plates are cleaned with hydrochloric acid before galvanizing, and a large amount of ferrous chloride solution is produced. In order to protect the environment and reduce costs, steel mills calcinate ferrous chloride at high temperature and recover chlorine gas to produce Hydrochloric acid produces a large amount of iron oxide red at the same time. Due to the limitation of technological conditions, its technical indicators such as content, color, and fineness cannot meet the requirements of commercial iron oxide red. It is currently stockpiled or used at low value, causing environmental pollution and resource waste. [0003] The magnets manufactured by the existing magnetic iron powder usually have insufficient magn...

Claims

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Application Information

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IPC IPC(8): H01F1/03H01F41/00C01G49/06
CPCC01G49/06H01F1/0315H01F41/00
Inventor 刘力强
Owner 徐州润锋新材料有限公司