Blast furnace with high-temperature-resistant and wear-resistant oxygen and pulverized coal tuyere

Abstract

The invention discloses a blast furnace with a high-temperature-resistant and wear-resistant oxygen and pulverized coal tuyere. The blast furnace comprises a foundation, a blast furnace body, a pulverized coal input assembly, an anti-blocking assembly, an anti-seepage assembly and a coal gas collecting assembly, the blast furnace body is installed on the foundation, and the circumferential bottom of the blast furnace body is sleeved with the pulverized coal input assembly. The anti-blocking assembly is arranged on the pulverized coal input assembly, and the anti-seepage assembly and the coal gas collecting assembly are both installed at the top end of the blast furnace body. The pulverized coal input assembly provides pulverized coal and air for a worker to smelt iron in the blast furnace body. The anti-blocking assembly is used for preventing the bent part of the pulverized coal input assembly from being blocked after the pulverized coal input assembly works for a long time. The anti-seepage assembly prevents coal gas produced in the blast furnace body in the iron smelting process from entering the external atmosphere through the furnace charge lowering position to form coal gas leakage, the external atmosphere is prevented from being polluted by the coal gas, and meanwhile economic losses caused by coal gas leakage are reduced.

Description

technical field [0001] The invention relates to the technical field of blast furnace ironmaking. Specifically, it is a blast furnace with high temperature resistance, wear resistance, oxygen and pulverized coal tuyere. Background technique [0002] When using a blast furnace for iron smelting, it is necessary to use the tuyeres to inject pulverized coal into the furnace. The pulverized coal is blown into the furnace from the external environment through the medium of hot air. However, in the case of long-term operation of the blast furnace, the granular coal powder is easy It will cause wear and tear on the tuyere of the blast furnace, and it is prone to blockage at the bend; there are other by-products in the iron smelting process, such as blast furnace gas, etc., and the blast furnace gas is collected through the top of the blast furnace. The mouth is also on the top of the blast furnace, and the blast furnace gas can easily enter the outside atmosphere through the inlet ...

AI Technical Summary

Problems solved by technology

[0002] When using a blast furnace for iron smelting, it is necessary to use the tuyeres to inject pulverized coal into the furnace. The pulverized coal is blown into the furnace from the external environment through the medium of hot air. However, in the case of long-term operation of the blast furnace, the granular coal powder is easy It will cause wear and tear on the tuyere of the blast furnace, and it is prone to blockage at the bend; there are other by-products in the iron smelting process, such as blast furnace gas, etc., and the blast furnace gas is collected through the top of the blast furnace. The mouth is also on the top of the blast furnace, and the blast furnace gas can easily enter the outside atmosphere through the inlet of the furnace charge below, reducing the air quality of the outside environment

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