Steel ladle brick cup joint filler and preparation method thereof

A joint filler and ladle seat technology, which is applied in the field of ladle seat brick joint sealant and its preparation, can solve problems such as easy penetration of molten steel, ladle off-line, gas leakage, etc., reduce labor intensity, improve production efficiency, and solve intolerance erosion effect

Inactive Publication Date: 2019-02-19
ANHUI PROVINCE XIAO COUNTRY HUALONG REFRACTORY MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, most of the corundum self-flowing materials are used for caulking around the block bricks in steel factories. After the corundum self-flowing material is sintered at high temperature, it is easy to shrink and produce gaps. The protective effect on the seat bricks will affect the service life of the seat bricks, resulting in the phenomenon of cross gas, and the ladle is forced to go offline, affecting production

Method used

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  • Steel ladle brick cup joint filler and preparation method thereof
  • Steel ladle brick cup joint filler and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A ladle seat brick joint filler, raw materials: corundum, Al 2 O 3 Powder, fused magnesia, cement, composite additives in parts by weight, the Al 2 O 3 Powder by a-Al 2 O 3 Powder and ρ-Al 2 O 3 Powder composition.

[0023] Preferably, the a-Al 2 O 3 Powder is 500 mesh a-Al 2 O 3 Powder and 1 um a-Al 2 O 3 Mixture of powder.

[0024] The composite additive is composed of silicon micropowder, high-efficiency composite water reducer and explosion-proof fiber.

Embodiment 2

[0026] As a design of embodiment 1, the weight ratio of the raw materials: corundum 75-80%, Al 2 O 3 Powder 10-14%, cement 3-7%, fused magnesia 3-7%, compound additive 0.1-1%.

[0027] Preferably, the composite additive is composed of 55-70% silicon micropowder, 15-30% high-efficiency composite water reducer, and 10-20% explosion-proof fiber.

[0028] Preferably, the corundum is composed of corundum aggregate and corundum powder, wherein the corundum aggregate: corundum powder=4-5:1, and the corundum powder is 300-350 mesh.

Embodiment 3

[0030] A ladle seat brick joint filler is weighed according to the proportion, and then produced according to the following production process.

[0031] 1) Preparation of raw materials: corundum aggregate (5-3, 3-1, 0-1) 62.25%, corundum powder 325 mesh 15%, alumina powder 12% (a-Al 2 O 3 Powder and ρ-Al 2 O 3 Powder, a-Al 2 O 3 Powder is 500 mesh a-Al 2 O 3 Powder and 1 um a-Al 2 O 3 Mixture of powder), 70 cement 5%, 200 mesh fused magnesia 5%, composite additives (silicon powder 0.5%, high-efficiency composite water reducing agent 0.15%, explosion-proof fiber 0.1%);

[0032] 2) Preparation of pre-mixed powder: evenly mix the powder and compound additives for later use;

[0033] 3) Mixing: Add the aggregate in step 1) and the pre-mixed powder in step 2) to the mixer and stir for 1-2 minutes, then add 4.5% water, and stir for 3-5 minutes to release the material;

[0034] 4) Put the mixed material into a standard 40mm*40mm*160mm abrasive tool for sample preparation;

[0035] 5) Demouldin...

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Abstract

The invention discloses a steel ladle brick cup joint filler which is prepared from raw materials: by weight parts, corundum, Al2O3 powder, fused magnesite, cement and composite additive, wherein Al2O3 powder is mixed from alpha-Al2O3 powder and rou-Al2O3 powder. The joint filler of new design and its construction solve the problem of air leakage of the steel ladle thoroughly, also solve the problem that corundum fluid has poor corrosion resistance and has poor protective effect to the periphery of the brick cup, improve production efficiency of steel mills, and reduce labor intensity.

Description

Technical field [0001] The invention relates to a ladle seat brick joint filler and a preparation method thereof, and belongs to the technical field of steelmaking equipment. Background technique [0002] At present, most of the steel mill seat bricks use corundum self-flowing material to fill the joints. After high temperature sintering, the corundum self-flowing material is easy to shrink and create gaps. After a period of use, the molten steel will easily penetrate into the joints, causing the surrounding bricks to not lift. In order to protect the bricks, the service life of the bricks will be affected, the gas leakage will be caused, and the ladle will be forced off the assembly line, affecting production. [0003] In order to solve the problem of gas leakage around the ladle block, it is necessary to develop a high-performance joint filler. Summary of the invention [0004] In order to solve the above problems, one of the objectives of the present invention is to provide a ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/101
CPCC04B35/101C04B2235/3206C04B2235/3418C04B2235/77C04B2235/96C04B2235/9607
Inventor 李捷金昭珍常绍刚朱广斌李贺
Owner ANHUI PROVINCE XIAO COUNTRY HUALONG REFRACTORY MATERIALS
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