Converter lining cooling method and cooling system

A cooling method and converter lining technology, applied in the manufacture of converters, etc., can solve the problems of slow cooling rate of converter lining, long working cycle of converter, unfavorable high-efficiency production, etc.

Active Publication Date: 2020-10-02
SHOUGANG CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a cooling method and a cooling system for the converter lining to solve or partly solve the technical problem that the existing converter lining has a slow cooling rate, which leads to a long working period of the converter and is not conducive to high-efficiency production

Method used

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  • Converter lining cooling method and cooling system
  • Converter lining cooling method and cooling system
  • Converter lining cooling method and cooling system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] For a 210t converter, during the cooling process of the converter, the angle of the converter is controlled to be 0°; the operating control parameters of the cold furnace are shown in Table 1, where the row of the cell whose oxygen lance position is empty represents two adjacent oxygen lances interval between bits.

[0064] Table 1: Converter cooling control parameters of Example 1

[0065]

[0066]

Embodiment 2

[0068] For a 100t converter, during the cooling process of the converter, the angle of the converter is controlled to be 0°; the operating control parameters of the cold furnace are shown in Table 1:

[0069] Table 2: Converter Cooling Control Parameters of Embodiment 2

[0070]

[0071]

Embodiment 3

[0073] For the 300t converter, during the cooling process of the converter, the angle of the converter is controlled to be 0°; the operating control parameters of the cold furnace are shown in Table 1:

[0074] Table 3: Converter Cooling Control Parameters of Embodiment 3

[0075]

[0076]

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PUM

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Abstract

The invention discloses a converter lining cooling method. The method includes the steps that a dust removal fan is controlled to keep on after a converter is shut down; M oxygen lance positions are determined, wherein M is greater than or equal to three and M is a positive integer; first converter cooling operation is executed, and the first converter cooling operation includes the steps that according to first air feed intensity and first air feed time, oxygen lances are controlled to blow cooling air to the oxygen lance positions successively from bottom to top; second converter cooling operation is executed, and the second converter cooling operation includes the steps that according to second air feed intensity and second air feed time, the oxygen lances are controlled to blow coolingair to the oxygen lance positions successively from bottom to top; the first air feed time is longer than the second air feed time; and the second converter cooling operation is executed N times until converter lining is cooled to a preset temperature. The method can accelerate the cooling efficiency of the converter lining, the period of converter service is shortened, and efficient production of a converter and subsequent smelting processes can be guaranteed.

Description

technical field [0001] The present application relates to the technical field of converter steelmaking, in particular to a converter lining cooling method and a cooling system. Background technique [0002] When the converter refractories have been in service for a certain period of time, they no longer meet the production and safety requirements. At this time, furnace operation is required. The so-called furnace operation refers to the demolition of old refractory materials and the construction of new refractory materials. During the working process of the converter, the temperature of the converter lining needs to be cooled from about 1600 °C at high temperature to about 200 °C or room temperature for the next step of manual removal and other operations. [0003] The traditional cooling mode of the converter lining is natural cooling, which means that it takes about 24 hours or even longer from the shutdown of the converter to the cooling of the converter lining temperatu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C5/44C21C5/46
CPCC21C5/4646C21C5/4606C21C5/441C21C2005/4626
Inventor 高攀黄桂斌郭玉明马文俊韩凯峰江腾飞张宝富于广义赵丽明郑全赵晓东孙永林朱克然刘道正
Owner SHOUGANG CORPORATION
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