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Long life tuyere small sleeve

A technology with small tuyeres and long life, which is applied in the direction of tuyeres, etc., can solve the problems of reducing the blast furnace operation rate, hidden dangers in production safety, and increasing coke consumption, so as to improve the blast furnace operation rate, prolong the life of the hearth, and reduce atypical damage Effect

Pending Publication Date: 2018-06-01
SHAGANG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Leakage from the small tuyere into the furnace not only increases the consumption of coke, but is also a hidden danger in safe production
To replace the damaged tuyere cover, the blast furnace needs to be shut down, which reduces the operation rate of the blast furnace and increases fuel consumption

Method used

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  • Long life tuyere small sleeve

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Embodiment Construction

[0013] The technical solutions in the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0014] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred de...

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Abstract

The invention discloses a long life tuyere small sleeve. The long life tuyere small sleeve is installed in a furnace wall between a bosh and a hearth, and extends into the furnace, and includes a tuyere small sleeve body, the center of the tuyere small sleeve body is a circular air supply passage, the rear end face of the tuyere small sleeve body is a vertical face, the front end face of the tuyere small sleeve body is an inclined plane with the upper part tilting to the furnace wall, the included angle between the front end face and the rear end face of the tuyere small sleeve body is alpha,and the included angle alpha and the bosh angle are mutually complementary angles. The long life tuyere small sleeve provided by the invention can effectively suppress the erosion of high speed rotating scorched particles and pulverized coal at the tuyere and molten furnace charge, and fundamentally eliminates the situation of shattering of the tuyere small sleeve caused by slag skin shedding.

Description

technical field [0001] The application relates to an ironmaking blast furnace, in particular to a small long-life tuyere sleeve. Background technique [0002] Blast furnace tuyere is an important process part used for air supply and coal injection in ironmaking blast furnace. It is composed of three parts: large sleeve, middle sleeve and small sleeve. It is installed in the innermost part of the furnace wall and extends into the furnace. It is the terminal equipment that sends hot air above 1100°C into the blast furnace. The small tuyere sleeve is used in an extremely harsh environment, not only to withstand high temperatures, but also to withstand the tuyere swing area The erosion of high-speed rotating coke particles, coal powder and molten furnace material makes the small tuyere cover wear quickly, especially when the furnace condition is not smooth or the slag skin falls off, the small tuyere cover is damaged more frequently. Water leakage from the small tuyeres into th...

Claims

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Application Information

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IPC IPC(8): C21B7/16
CPCC21B7/16
Inventor 刘俭方音顾琰王卫东
Owner SHAGANG GROUP
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