A cooling method and cooling system for converter lining

A cooling method and converter lining technology, which is applied in the manufacture of converters, etc., can solve the problems of long working cycle of the converter, unfavorable high-efficiency production, and slow cooling rate of the converter lining, so as to shorten the working cycle, ensure high-efficiency production, The effect of accelerating the cooling rate

Active Publication Date: 2022-04-19
SHOUGANG CORPORATION
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  • 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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  • A cooling method and cooling system for converter lining
  • A cooling method and cooling system for converter lining
  • A cooling method and cooling system for converter lining

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]

Embodiment 2

[0067] 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:

[0068] Table 2: Converter Cooling Control Parameters of Embodiment 2

[0069]

Embodiment 3

[0071] 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:

[0072] Table 3: Converter Cooling Control Parameters of Embodiment 3

[0073]

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Abstract

The invention discloses a cooling method for the lining of a converter, which includes: after the converter is shut down, controlling the dust removal fan to keep on; determining M oxygen lance positions, where M≥3 and is a positive integer; performing the first cooling operation, and the second A cold furnace operation includes: according to the first gas supply intensity and the first gas supply time, control the oxygen lance from bottom to top, and spray cooling gas on each oxygen lance position in turn; perform the second cold furnace operation, the second cooling Furnace operation includes: according to the second gas supply intensity and the second gas supply time, control the oxygen lance from bottom to top, and spray cooling gas on each oxygen lance position in turn; wherein, the first gas supply time is longer than the second gas supply time Time; repeat the second cooling furnace operation N times until the converter lining is cooled to the preset temperature. The above method can speed up the cooling rate of the converter lining, shorten the working cycle of the converter, and ensure the high-efficiency production of the converter and subsequent smelting processes.

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 Patents(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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