Blast furnace tuyere equipment for blast furnace ironmaking

Abstract

The invention discloses blast-furnace tuyere equipment for blast-furnace ironmaking, and belongs to the technical field of blast-furnace ironmaking. The equipment comprises a mounting frame, an outerfurnace jacket is detachably connected to one side of the mounting frame, an inner furnace jacket is detachably connected into the outer furnace jacket, a mounting ring is fixedly connected to one endof the inner furnace jacket, and the surface of the mounting ring is detachably connected with a fastening bolt B and is connected to the mounting frame through the fastening bolt B. According to theequipment, a blast furnace tuyere adopts a combined structure of the inner furnace jacket and the outer furnace jacket, the outer furnace jacket plays a role in supporting and fixing the inner furnace jacket, when the inner furnace jacket is abraded, the fastening bolt B can be screwed out to pull out the inner furnace jacket from the outer furnace jacket for replacement, the outer furnace jacketdoes not need to be replaced, compared with the situation that a traditional integrated structure needs to be integrally replaced, the equipment has the advantages that the use and maintenance cost is lowered, the connecting position between the inner furnace jacket and the mounting frame is located outside the mounting frame, disassembling is convenient and fast, replacement is more time-savingand labor-saving, and the influence on production is reduced.

Description

technical field [0001] The invention relates to the technical field of blast furnace ironmaking, in particular to blast furnace tuyere equipment used for blast furnace ironmaking. Background technique [0002] The blast furnace uses a steel plate as the furnace shell, and the shell is lined with refractory bricks. The blast furnace body is divided into five parts from top to bottom: throat, furnace body, furnace waist, furnace bolly and hearth. Due to the good technical and economic indicators of blast furnace ironmaking, The process is simple, the production volume is large, the labor production efficiency is high, and the energy consumption is low. Therefore, the iron produced by this method accounts for the vast majority of the world's total iron production. The high temperature hot air is one of the important components in blast furnace ironmaking. [0003] Patent No. CN 201908098 U discloses a blast furnace tuyere device for blast furnace ironmaking, a gas injection ri...

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Problems solved by technology

[0004] The above-mentioned blast furnace tuyere used for blast furnace ironmaking has the following disadvantages during use: 1. The traditional blast furnace tuyere is an integrated structure. In actual use, when the tuyere needs to be replaced, it must be replaced as a whole. The outer furnace jacket was severely damaged, and the overall replacement increased the use and maintenance costs; 2. When cooling the tuyere of the blast furnace, air cooling and water cooling are mainly used. After cooling, the cooling medium is directly discharged, which will cause waste of resources. Moreover, a large amount of heat in the blast furnace tuyere will be wasted. Therefore, we propose a blast furnace tuyere equipment for blast furnace ironmaking

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