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Method for randomly adjusting blast-furnace tuyere air inlet area

A technology of air inlet area and tuyere, applied in the direction of tuyere, blast furnace, blast furnace details, etc., can solve the problems of high labor intensity for workers and complicated adjustment operations

Inactive Publication Date: 2020-07-07
XINJIANG BAYI IRON & STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the adjustment operation is complicated and the labor intensity of the workers is high

Method used

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Embodiment Construction

[0010] A method that can adjust the air inlet area of ​​the blast furnace tuyere at will. 1) Make a tuyere bushing with an inner diameter of ∮100mm at the small opening in advance, and the tuyere bushing is in the shape of a cone; the shape, length and inner diameter of the tuyere bushing size to match;

[0011] 2) During blast furnace production, small tuyeres with an inner diameter of ∮125mm or ∮120mm are generally installed, and the blast furnace air inlet area is 0.368 square meters and 0.339 square meters respectively. If the blast furnace operation needs to reduce the air inlet area, install additional The inner diameter of the tuyere bushing is ∮100mm, so the inner diameter of the air inlet of the tuyere is changed from ∮120mm to ∮100mm, and the air inlet area of ​​the blast furnace is correspondingly reduced to 0.236 square meters;

[0012] 3) If the blast furnace needs to continue to adjust the air inlet area to 0.259 square meters, before installing the tuyere bushin...

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Abstract

The invention discloses a method for randomly adjusting blast-furnace tuyere air inlet area. The method comprises the following steps that 1) a tuyere sleeve is manufactured in advance for standby, wherein the inner diameter of the small port end of the tuyere sleeve is phi 100 mm; 2) during blast furnace production, a tuyere small sleeve with the inner diameter of phi 125 mm or phi 120 mm is generally arranged, if the air inlet area needs to be reduced during blast furnace operation, the tuyere sleeve with the inner diameter of phi 100 mm is additionally arranged; 3) if the air inlet area ofthe blast furnace needs to be continued to be adjusted to be 0.259 square meter, before the tuyere sleeve is additionally arranged, a brick cutting machine is used for cutting off the small end of thetuyere sleeve by 10 mm, and then the inner diameter of the tuyere sleeve is changed from phi 100 mm to phi 105 mm; and 4) according to the different requirements of the air inlet area of the blast furnace, the brick cutting machine is used for sequentially cutting off the small end of the tuyere sleeve by the length of 10 mm so that the tuyere sleeve can be changed into tuyere small sleeves withdifferent inner diameter such as phi 105 mm, phi 110 mm, phi 115 mm, phi 120 mm and phi 125 mm, the different requirements of blast furnace operation are met, and the requirement of blast furnace production is met.

Description

technical field [0001] The invention relates to a method for freely adjusting the air inlet area of ​​a tuyere of a blast furnace. Background technique [0002] In the past, when the blast furnaces A, B, and C in Bayi Iron and Steel New District needed to adjust the air supply area, they often used the opportunity of wind down to replace the small tuyere cover to achieve it. For example, replace the small tuyere sleeve with an inner diameter of ∮125mm with a small tuyere sleeve of ∮120mm or ∮115mm, so as to adjust the air inlet area of ​​the blast furnace tuyere to meet the operation requirements of the blast furnace. However, the adjustment operation is complicated and the labor intensity of the workers is high. Contents of the invention [0003] The purpose of the present invention is to provide a method for freely adjusting the air inlet area of ​​the tuyere of the blast furnace, which can be adjusted and changed at will according to the production needs of the blast f...

Claims

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Application Information

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IPC IPC(8): C21B5/00C21B7/16
CPCC21B5/00C21B7/16
Inventor 王宗乐任贵河阿吾肯李胜强
Owner XINJIANG BAYI IRON & STEEL
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