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Production process of copper-containing steel

A production process, copper and steel technology, applied in the field of alloy steel smelting, can solve the problems of high economic cost, complicated preparation, and large amount of material consumption, and achieve the effects of reducing economic investment, optimizing production process, and saving smelting and production processes

Inactive Publication Date: 2013-04-10
河北节能耐火材料集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention improves the production of copper-containing steel, but basically follows the traditional copper-added iron alloy steel as the raw material. The preparation in the early stage of the process is complicated, consumes a lot of materials, and the economic cost is high.

Method used

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  • Production process of copper-containing steel
  • Production process of copper-containing steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Taking the preparation of copper-containing steel with a copper content of 0.3% as an example, the production process of such copper-containing steel includes the following steps:

[0027] (1) Preparation of molten iron

[0028] Obtain 4t molten iron with a temperature of 1470℃ in the blast furnace;

[0029] (2) Transfer of molten iron

[0030] Put the molten iron ladle obtained in step (1) into the electric furnace;

[0031] (3) Add copper ore

[0032] Add 400 kg of copper ore with a copper oxide content of 3.0% to the electric furnace described in step (2) to fully contact the molten iron;

[0033] (4) Smelting

[0034] The molten iron and copper ore obtained in step (3) are heated, the temperature is increased to 1550°C, and the temperature is maintained at 1550°C for 10 minutes.

[0035] In the above embodiment:

[0036] In the step (1), the mass percentage of the components of the obtained molten iron is: 2.7% Si, 4.1% C, and the balance is Fe;

[0037] In the step (3), the copper...

Embodiment 2

[0045] Taking the preparation of copper-containing steel with a copper content of 0.3% as an example, the production process of this copper-containing steel is the same as in Example 1, except that in the step (3), the added copper ore is pre-reduced The copper-containing minerals; the steps of pre-reduction treatment of copper ore are:

[0046] (3.1) After crushing the copper ore and mixing it with a reducing agent, the particle size of the mixture is 20mm-150mm;

[0047] (3.2) Roast the resulting mixture at 600°C for 3h;

[0048] Wherein, the reducing agent is carbon powder, and the mass of carbon in the reducing agent is 5% of the mass of copper in the copper-containing mineral.

[0049] In the above embodiment, through the pre-reduction treatment of the copper ore, part of the copper oxide contained in it is reduced, and part of the chemical bond is in a different degree of activation state, so that it will be contacted with high temperature molten iron in step (4). It is quickly...

Embodiment 3

[0052] Taking the preparation of copper-containing steel with a copper content of 0.3% as an example, the production process steps of this kind of copper-containing steel are the same as in Example 1, except that:

[0053] In step (1), 4t molten iron with a temperature of 1400°C is obtained in the blast furnace;

[0054] In step (4), the molten iron and copper ore of step (3) are heated, the temperature is increased to 1400°C, and the temperature is maintained at 1400°C for 8 minutes.

[0055] In the above embodiment:

[0056] In the step (1), the mass percentage of the components of the obtained molten iron is: 2.0% Si, 3.6% C, and the balance is Fe;

[0057] In the step (3), the particle size of the copper ore is 40 mm to 60 mm;

[0058] In the step (4), the heating rate for heating the mixture of copper-containing minerals and molten iron is 10° C. / min.

[0059] The copper content of the copper-containing steel obtained by the above-mentioned copper-containing steel production process ...

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Abstract

The invention relates to a production process of copper-containing steel. The production process comprises the following steps: preparing molten iron at the temperature of 1400 DEG C-1520 DEG C in a blast furnace, transferring the molten iron into a converter or an electric furnace, and adding copper-containing minerals into the converter or the electric furnace to enable the copper-containing minerals to be in contact with the molten iron; and heating the copper-containing minerals and the molten iron to 1400 DEG C-1600 DEG C for smelting. According to the production process disclosed by the invention, the traditional production process of the copper-containing steel can be fully optimized, the smelting and the production processes can be saved, copper-containing ores are used for replacing a copper-iron alloy, the yield of copper can be ensured, the production cost is greatly reduced, the production efficiency is improved, the economic input is reduced, a large number of raw materials can be saved, and the production process is suitable for popularization and application in the field of related smelting of the copper-containing steel.

Description

Technical field [0001] The invention relates to an alloy steel smelting method, in particular to a copper-containing steel production process. Background technique [0002] At present, copper-containing steel is widely used for its excellent corrosion resistance and other physical and mechanical properties, such as vehicles and container plates. The smelting process is mainly used in steelmaking (iron ore → sintering → blast furnace ironmaking → molten iron desulfurization → converter (Or electric furnace) → adding alloy → to LF furnace or RH or other refining equipment to fine-tune the composition → continuous casting → rolling → finished steel) in the converter or electric furnace stage for alloying treatment, that is, adding copper-iron alloy to the converter or electric furnace to achieve The required components of steel grades consume a lot of copper metal in this process, and the production cost of copper-iron alloys is high. Correspondingly, a large amount of economic inve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C33/04C22C38/16
Inventor 崔东瑞
Owner 河北节能耐火材料集团有限公司
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