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Method for raising carburant absorptivity in cast iron synthesis technology

A technology for synthesizing cast iron and recarburizer, applied in the field of cast iron production, can solve the problem of low absorption rate of recarburizer, and achieve the effects of shortening the absorption time, increasing the absorption rate, and improving the water yield of scrap steel

Inactive Publication Date: 2018-07-17
XINXING CAST PIPE FUKANG ENERGY
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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 improving the absorption rate of carburizer in the process of synthetic cast iron, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the problem of low absorption rate of carburant in the existing method of adding carburant

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  • Method for raising carburant absorptivity in cast iron synthesis technology

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Embodiment 1

[0010] Embodiment 1: The method for improving the absorption rate of the recarburizer in the synthetic cast iron process is carried out as follows: the recarburizer is laid on the inner bottom of the equipment, and then the molten iron formed by scrap steel is washed into the bottom to lay the recarburizer Inside the equipment, the temperature of molten iron formed from steel scrap is 1450°C to 1550°C. After the molten iron formed from steel scrap is washed in, the molten iron formed from steel scrap absorbs the recarburizer to obtain carburized molten iron. The time for the molten iron formed from steel scrap to absorb the recarburizer is 1 minutes to 2 minutes.

[0011] The present invention adopts a carburant adding method different from the prior art, and adopts a bottom filling method (the carburant is placed on the bottom of the equipment, and then the molten iron formed from scrap steel is washed into the equipment at the bottom where the carburant is placed. ) to impro...

Embodiment 2

[0014] Example 2: As an optimization of the above example, the molten iron formed from scrap steel is obtained by the following method: melting scrap steel into molten iron, removing impurities on the surface of the molten iron, and heating the molten iron after removing impurities to 1450°C to 1550°C to obtain scrap steel into molten iron of molten iron.

Embodiment 3

[0015] Embodiment 3: The method for improving the absorption rate of recarburizer in the synthetic cast iron process is carried out as follows: the recarburizer is laid on the inner bottom of the equipment, and then the molten iron formed by scrap steel is washed into the bottom to lay the recarburizer Inside the equipment, the temperature of molten iron formed from steel scrap is 1450°C. After the molten iron formed from steel scrap is washed in, the molten iron formed from steel scrap absorbs the recarburizer to obtain carburized molten iron. The time for the molten iron formed from steel scrap to absorb the recarburizer is 2 minutes.

[0016] By adopting the method described in Example 3, the absorption rate of the carburant by molten iron can reach 97.96%.

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Abstract

The invention relates to the technical field of cast iron production, in particular to a method for raising the carburant absorptivity in a cast iron synthesis technology. The method comprises the steps that a carburant is laid at the bottom in equipment, then steel scrap is molten into molten iron to rush into the equipment with the carburant laid at the bottom, then the molten iron of the steelscrap absorbs the carburant, and thus recarburized molten iron is obtained. According to the method for raising the carburant absorptivity in the cast iron synthesis technology, the carburant absorptivity of the molten iron is raised, then the molten iron discharge rate of the steel scrap is raised, a guarantee is provided for later-stage cast iron production, and steel scrap recycling is realized. In addition, compared with a mode of adding the carburant and heating the steel scrap at the same time, the method for raising the carburant absorptivity in the cast iron synthesis technology can shorten the carburant absorption time, and based on the advantage, the method for raising the carburant absorptivity in the cast iron synthesis technology has wide technical application prospects.

Description

technical field [0001] The invention relates to the technical field of cast iron production, and relates to a method for improving the absorption rate of a recarburizer in a synthetic cast iron process. Background technique [0002] In recent years, with the rising prices of raw materials, especially the sharp rise in the price of pig iron, the cost of cast iron products is getting higher and higher. At the same time, with the increase of steel demand, the iron and steel waste that does not become products in the production process of iron and steel plants (such as trimming, cutting heads, etc.) and the iron and steel materials in equipment and components that are scrapped after use also increase. bigger and bigger. In order to maximize the utilization of scrap steel recovery rate, when scrap steel is smelted into molten iron, corresponding recarburizers are added to produce cast iron products. At present, there are two methods of adding recarburizer: scrap steel and recar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C7/00
CPCC21C7/0025Y02P10/20
Inventor 李东利石章志侯万朝高君合张震宋永明
Owner XINXING CAST PIPE FUKANG ENERGY
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