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Method for preparing steel additive by taking waste steel as raw material

A technology for steel additives and raw materials, applied in the direction of improving process efficiency, can solve problems such as incomplete reduction, change in steel properties, poor steel toughness, etc., and achieve the effect of reducing impurity content, improving strength, and facilitating forming

Inactive Publication Date: 2019-02-12
LIAONING INST OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention provides a method for preparing iron and steel additives by using scrap steel as raw material, which can effectively solve the problem in the above-mentioned background technology that because the surface of scrap steel contains more oil stains and rust stains, rust components will be contained in the iron and steel additive after the production is completed. When it is in steel, it will lead to changes in the properties of steel, and in the process of using scrap steel to make steel additives, steel needs to be melted at ultra-high temperatures, and there may be problems that cannot be fully restored, resulting in poor toughness of steel. bad question

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  • Method for preparing steel additive by taking waste steel as raw material

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Embodiment 1

[0026] Embodiment 1: as figure 1 As shown, the present invention provides a technical solution, a steel additive, and the steel additive is made of the following raw materials in parts by weight: 95 parts of scrap steel, 15 parts of iron ore, 17 parts of metallic aluminum, 12 parts of graphite, and 13 parts of ferrosilicon powder , 25 parts of aluminum oxide, 7 parts of manganese silicide, 3 parts of bismuth and 5 parts of antimony trioxide.

[0027] A method for preparing iron and steel additives from scrap steel, comprising the steps of:

[0028] S1. Cleaning: use oxalic acid and oil cleaning agent to clean the rust and oil on the surface of scrap steel;

[0029] S2. Crushing: use the scrap steel crusher to crush the cleaned scrap steel;

[0030] S3. Magnetic separation: add the crushed steel scrap into the magnetic separator, and perform magnetic separation on the steel scrap;

[0031] S4. Preheating: use flame to bake the scrap steel to remove the grease and moisture on...

Embodiment 2

[0042] Embodiment 2: as figure 1 As shown, the present invention provides a technical solution, a steel additive, and the steel additive is made of the following raw materials in parts by weight: 90 parts of scrap steel, 10 parts of iron ore, 15 parts of metallic aluminum, 10 parts of graphite, and 10 parts of ferrosilicon powder , 20 parts of aluminum oxide, 5 parts of manganese silicide, 2 parts of bismuth and 3 parts of antimony trioxide.

[0043] A method for preparing iron and steel additives from scrap steel, comprising the steps of:

[0044] S1. Cleaning: use oxalic acid and oil cleaning agent to clean the rust and oil on the surface of scrap steel;

[0045] S2. Crushing: use the scrap steel crusher to crush the cleaned scrap steel;

[0046] S3. Magnetic separation: add the crushed steel scrap into the magnetic separator, and perform magnetic separation on the steel scrap;

[0047] S4. Preheating: use flame to bake the scrap steel to remove the grease and moisture on...

Embodiment 3

[0058] Embodiment 3: as figure 1 As shown, the present invention provides a technical solution, a steel additive, and the steel additive is made of the following raw materials in parts by weight: 100 parts of scrap steel, 20 parts of iron ore, 20 parts of metallic aluminum, 15 parts of graphite, and 15 parts of ferrosilicon powder , 30 parts of aluminum oxide, 10 parts of manganese silicide, 5 parts of bismuth and 7 parts of antimony trioxide.

[0059] A method for preparing iron and steel additives from scrap steel, comprising the steps of:

[0060] S1. Cleaning: use oxalic acid and oil cleaning agent to clean the rust and oil on the surface of scrap steel;

[0061] S2. Crushing: use the scrap steel crusher to crush the cleaned scrap steel;

[0062] S3. Magnetic separation: add the crushed steel scrap into the magnetic separator, and perform magnetic separation on the steel scrap;

[0063] S4. Preheating: use flame to bake the scrap steel to remove the grease and moisture ...

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Abstract

The invention discloses a method for preparing a steel additive by taking waste steel as a raw material. The steel additive is prepared from the following raw materials in parts by weight, 95 parts ofwaste steel, 15 parts of iron ore, 17 parts of metal aluminum, 12 parts of graphite, 13 parts of ferrosilicon powder, 25 parts of aluminum oxide, 7 parts of manganese silicide, 3 parts of bismuth and5 parts of antimony trioxide. The method has the advantages of being scientific and reasonable, the use is safe and convenient, the steel additive is prepared from the waste steel, the waste of steelresources can be effectively reduced, and the steel utilization rate is improved; the iron ores are added into the steel additives, so that the fierce effect of the decarbonization reaction is effectively promoted, the steel smelting is more sufficient, the impurity content in the steel is greatly reduced, and the performance of the steel is effectively improved; and the metal aluminum is added into the steel additive, so that the steel which needs to be smelted is subjected to sufficient deoxidation treatment, the oxygen content in the steel can be reduced, and the strength, the hardness andthe elasticity of the steel can be improved.

Description

technical field [0001] The invention relates to the technical field of scrap steel treatment, in particular to a method for preparing steel additives by using scrap steel as a raw material. Background technique [0002] Scrap steel refers to the iron and steel waste that does not become a product in the production process of the iron and steel plant and the iron and steel materials in the equipment and components that are scrapped after use. The composition of steel is called scrap steel, and the composition of pig iron is called scrap iron, collectively referred to as scrap steel. The utilization rate in the industry is low, which will cause a waste of resources. Therefore, people use scrap steel to make steel additives. However, in the process of using scrap steel to make steel additives, there are the following disadvantages: because the scrap steel surface contains more oil and rust. , will lead to iron and steel additives containing rust components after the production ...

Claims

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Application Information

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IPC IPC(8): C22C35/00C21C7/00C21C7/06C21C7/068C22C33/06
CPCC21C7/0006C21C7/06C21C7/068C22C33/06C22C35/00Y02P10/20
Inventor 张作良陈韧孙野
Owner LIAONING INST OF SCI & TECH
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