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Blast furnace tuyere inner wall cleaning grinding head device and recycling method thereof

A tuyere and blast furnace technology, which is applied in the direction of grinding/polishing safety devices, devices for fixing grinding wheels, grinding machines, etc., can solve the problems of failure to reach the expected target, low operating efficiency, and harsh operating environment, etc., to improve the cleaning effect, The effect of reducing consumption and speeding up work efficiency

Pending Publication Date: 2020-02-28
MAANSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For a long time, the high-temperature slag and iron charge in this area has been manually cleaned. The operating environment in this area is extremely harsh, not only high temperature but also accompanied by gas, dust, water vapor, etc., and the operating efficiency is low. The mechanical cleaning equipment developed in the prior art, although it can Reduce the labor intensity of on-site operations, but the consumption of the grinding head inserted into the furnace for cleaning is large and needs to be replaced continuously, and the efficiency of the operation has not reached the expected goal

Method used

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  • Blast furnace tuyere inner wall cleaning grinding head device and recycling method thereof
  • Blast furnace tuyere inner wall cleaning grinding head device and recycling method thereof
  • Blast furnace tuyere inner wall cleaning grinding head device and recycling method thereof

Examples

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Effect test

Embodiment 1

[0035] from Figure 1-4 It can be seen that a device for cleaning the inner wall of a blast furnace tuyere in this embodiment includes a grinding disc main body 3, and the outer ring of the grinding disc main body 3 is equidistantly spaced with alloy T-shaped grooves 2 and alloy T-shaped grooves 2. A T-shaped sharpening blade 1 is arranged in the slot hole, and the grinding disc main body 3 is composed of a primary grinding disc 5 and a secondary grinding disc 6. The diameter of the primary grinding disc 5 is the diameter of the front part of the small sleeve in the air outlet 90% to 105%, the diameter of the secondary grinding disc 6 is 90% to 95% of the tail diameter of the small sleeve in the tuyere, the mechanical grinding head is suitable for the size of the tuyere, the primary grinding disc 5 and the secondary grinding disc 6 The surface is provided with installation positioning holes 4, and the installation positioning holes 4 are distributed symmetrically on the surfac...

Embodiment 2

[0044] from Figure 5 It can be seen that a device for cleaning the inner wall of a blast furnace tuyere in this embodiment includes a grinding disc main body 3, and the outer ring of the grinding disc main body 3 is equidistantly spaced with alloy T-shaped grooves 2 and alloy T-shaped grooves 2. A T-shaped sharpening blade 1 is arranged in the slot hole of the T-shaped sharpening blade 1, and a double-layer buffer clamping pad 12 is installed on the bottom of the T-shaped sharpening blade 1. The inner groove surface of the T-shaped groove 2 is flexibly fitted, and the elastic force of the double-layer buffer clamping pad 12 produces a clamping effect on both sides, which can not only buffer the force of the T-shaped sharpening blade 1, but also protect the alloy T-shaped groove 2. At the same time, prevent impurities in the furnace from entering the gap between the T-shaped grinding blade 1 and the alloy T-shaped groove 2. The double-layer buffer clamping pad 12 is made of he...

Embodiment 3

[0047] from Image 6 It can be seen that a device for cleaning the inner wall of a blast furnace tuyere in this embodiment includes a grinding disc main body 3, and the outer ring of the grinding disc main body 3 is equidistantly spaced with alloy T-shaped grooves 2 and alloy T-shaped grooves 2. There is a T-shaped sharpening blade 1 in the slot hole. The T-shaped sharpening blade 1 uses a titanium alloy grinding head. The titanium alloy material has high strength, good corrosion resistance, high heat resistance, and has the advantages of long life. The T-shaped sharpening blade The front end of 1 is irregular and linear. Due to the uncertainty and inhomogeneity of the distribution of the high-temperature slag-iron charge in the blast furnace, a cutter head with irregularities and a larger working coverage is selected. When the cutter head is working, the working area is wider. The cleaning effect is better. Compared with the traditional conical cutter head, the cleaning time ...

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Abstract

The invention discloses a blast furnace tuyere inner wall cleaning grinding head device and a recycling method thereof, and belongs to the technical field of blast furnace cleaning. The blast furnacetuyere inner wall cleaning grinding head device comprises a grinding disc body, alloy T-shaped grooves are formed in an outer ring of the grinding disc body at equal intervals, and T-shaped grinding edges are arranged in groove holes of the alloy T-shaped grooves. The grinding disc body is composed of a primary grinding disc and a secondary grinding disc, and steam-through holes are separately andevenly formed in the surface of the primary grinding disc and the surface of the secondary grinding disc. According to the blast furnace tuyere inner wall cleaning grinding head device and the recycling method thereof, furnace inner cleaning is carried out through the T-shaped grinding edges on the surface of the grinding disc body, accumulated materials in the furnace can be cleaned at a time, the requirements of tuyere installation are met, and the consumption is greatly reduced; the requirement of uniform cooling of water spray are met during operation, quick cooling is realized, heat accumulation is avoided, and the structure of the device body can be recycled; and by selecting the T-shaped grinding edges of different materials and different shapes, the cleaning effect is improved, the working efficiency is improved, and the grinding disc body is enabled to adapt to the high temperature and bad environment in a blast furnace.

Description

technical field [0001] The invention relates to the technical field of blast furnace cleaning, and more specifically relates to a blast furnace tuyere inner wall cleaning grinding pin head device and a recycling method thereof. Background technique [0002] In modern large-scale blast furnace ironmaking production, 30 to 40 air supply devices are equipped to send hot air evenly around the garden-shaped furnace body into the blast furnace for blast furnace ironmaking and smelting production. The end of the air supply device is equipped with a large set, a middle set and a small set of the tuyere. The large set is fixed on the furnace shell, and the middle set and the small set extend into the furnace. The middle set and the small set are made of copper and need to be replaced frequently. The steps are: first pull out the damaged tuyere small sleeve and the middle sleeve in sequence, manually clean the high-temperature slag and iron charge in this area, and then install the sm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B27/00B24B27/033B24B41/04B24B45/00B24B55/02
CPCB24B27/0076B24B27/033B24B41/04B24B45/003B24B55/02
Inventor 廖海欧高鹏郑作宝江济
Owner MAANSHAN IRON & STEEL CO LTD