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Copper bearing steel production process

A production process and technology of copper steel, applied in the field of alloy steel smelting, can solve the problems of high economic cost, consumption of a large amount of materials, complicated preparation, etc., and achieve the effect of reducing economic investment, saving smelting and production process, and optimizing production process

Inactive Publication Date: 2019-07-09
青岛金越隆机械有限公司
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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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 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 includes the following steps:

[0028] (1) Preparation of molten iron

[0029] Obtain 4 tons of molten iron at a temperature of 1470°C in a blast furnace;

[0030] (2) Transfer molten iron

[0031] Add the molten iron obtained in step (1) into the electric furnace with a ladle;

[0032] (3) Add copper ore

[0033] Adding 400kg of copper ore with a copper oxide content of 3.0% in the electric furnace described in step (2), makes it fully contact with molten iron;

[0034] (4) Smelting

[0035] The molten iron and copper ore obtained in step (3) were heated to 1550°C and kept at 1550°C for 10 minutes.

[0036] In the above-mentioned embodiment:

[0037] In the step (1), the mass percent content of the components of the obtained molten iron is: 2.7% Si, 4.1% C, and the balance is Fe;

[0038] In the step (3), the coppe...

Embodiment 2

[0043] Taking the preparation of copper-containing steel with a copper content of 0.3% as an example, the production process steps of this copper-containing steel are the same as in Example 1, the difference is that in the step (3), the copper ore added is pre-reduced copper-containing minerals; the step of carrying out pre-reduction treatment on copper ore is:

[0044] (3.1) After pulverizing the copper ore and mixing it with a reducing agent, the particle size of the prepared mixture is 20mm-150mm;

[0045] (3.2) Roast the obtained mixture at 600°C for 3h;

[0046] Wherein, the reducing agent is carbon powder, and the mass of carbon contained in the reducing agent is 5% of the mass of copper in the copper-containing mineral.

[0047] In the above examples, through the pre-reduction treatment of copper ore, the copper oxide contained in it is partially reduced, and some chemical bonds are in different degrees of activation, so that after contacting with high-temperature molt...

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Abstract

The invention relates to a copper bearing steel production process. The copper bearing steel production process comprises the steps that molten iron with the temperature being 1400 DEG C-1520 DEG C isprepared in a blast furnace, the molten iron is transferred into a converter or an electric furnace, and copper bearing mineral is added into the converter or the electric furnace to make contact with the molten iron; and the copper bearing mineral and the molten iron are heated to 1400 DEG C-1600 DEG C to be smelted. According to the copper bearing steel production process, a traditional copperbearing steel production process is sufficiently optimized, the smelting and production processes of copper and iron are saved, a copper and iron alloy is replaced by copper ore, while the yield of copper is guaranteed, the production cost is greatly reduced, the production efficiency is improved, the economic input is reduced, a great number of raw materials are saved, and the copper bearing steel production process is suitable for being applied and popularized in the related field of copper bearing steel smelting.

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 physical and mechanical properties such as corrosion resistance, such as vehicle and container plates, etc., and its smelting process is mainly through steelmaking (iron ore→sintering→blast furnace ironmaking→hot metal desulfurization→converter (or electric furnace) → adding alloy → fine-tuning composition in LF furnace or RH or other refining equipment → continuous casting → rolling → finished steel) for alloying treatment in the converter or electric furnace stage, that is, adding copper-iron alloy in the converter or electric furnace to achieve In this process, a large amount of copper metal is consumed, and the production cost of copper-iron alloy is high. Correspondingly, a large amount of economic investment is required, especially...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C33/04C22C38/16C22C38/02
CPCC22C33/04C22C38/02C22C38/16
Inventor 崔锡恩
Owner 青岛金越隆机械有限公司
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