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Anti-scouring tapping hole sleeve brick

A taphole and anti-scouring technology, applied in the field of refractory materials, can solve the problems of frequent replacement of taphole sleeve bricks and low taphole life, achieve good anti-scouring and anti-oxidation performance, improve high-temperature strength, and shorten replacement The effect of frequency

Inactive Publication Date: 2015-07-01
营口东邦环保科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is used to solve the situation that the service life of the taphole is too low and the sleeve brick of the taphole is replaced frequently

Method used

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  • Anti-scouring tapping hole sleeve brick
  • Anti-scouring tapping hole sleeve brick
  • Anti-scouring tapping hole sleeve brick

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] An anti-erosion taphole sleeve brick is made of the following raw materials according to the ratio:

[0022] Fused magnesia 62kg

[0023] Corundum 15kg

[0024] Magnesium aluminum spinel 5kg

[0025] Graphite 12kg

[0026] High temperature asphalt 2kg

[0027] Aluminum powder 2kg

[0028] Resin powder 2kg.

[0029] Liquid resin (as a binder) 3kg

Embodiment 2

[0031] An anti-erosion taphole sleeve brick is made of the following raw materials according to the ratio:

[0032] Fused magnesia 51kg

[0033] Corundum 20kg

[0034] Magnesium aluminum spinel 10kg

[0035] Graphite 14kg

[0036] High temperature asphalt 2kg

[0037] Aluminum powder 2kg

[0038] Resin powder 1kg

[0039] Liquid resin (as a binder) 2kg

Embodiment 3

[0041] An anti-erosion taphole sleeve brick is made of the following raw materials according to the ratio:

[0042] Fused magnesia 57kg

[0043] Corundum 15kg

[0044] Magnesium aluminum spinel 10kg

[0045] Graphite 12kg

[0046] High temperature asphalt 1kg

[0047] Metal aluminum powder 3kg

[0048] Resin powder 2kg

[0049] Liquid resin (as a binder) 1kg

[0050] The preparation process of the anti-erosion taphole sleeve brick described in the above-mentioned embodiments 1-3 is as follows: detection of chemical composition of raw materials-weighing and batching-mixing and stirring-machine pressing forming-drying-bonding.

[0051] A. Material selection and preparation:

[0052] Fused magnesia: MgO content in fused magnesia ≥ 97.0%, particle size ≤ 5mm; fused magnesia follows the standard YB / T5266-2004, and fused magnesia with grades FM970, FM975, FM980, FM985, FM990 can be used ,. When in use, detect the chemical composition MgO, SiO2, CaO; the detection requiremen...

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Abstract

The invention relates to an anti-scouring tapping hole sleeve brick, which comprises the following components by weight part: 50-65 parts of fused magnesia, 15-25 parts of corundum, 5-10 parts of magnesium aluminate spinel, 12-14 parts of graphite, 1-2 parts of high temperature asphalt, 1.5-3 parts of metal aluminium powder, 1-2 parts of resin-oatmeal, and 1-3 parts of binder. According to the invention, corundum is a high-grade aluminium raw material which has anti-scouring effect; and the added magnesium aluminate spinel is capable of increasing the high temperature intensity of sleeve brick. The sleeve brick has good anti-scouring and antioxidation effects under high temperature state, service life is greatly increased, and replacing frequency is shortened. The average service life can reach more than 300 heat.

Description

technical field [0001] The invention relates to an improvement of the formula of an anti-erosion taphole brick, and belongs to the technical field of refractory materials. Background technique [0002] Since the outbreak of the financial crisis in 2008, the world's steel demand has dropped sharply, and steel companies have been severely impacted, and steel prices have been frequently lowered. Leading to serious losses of steel mills. Therefore, under the test of the severe situation, all steel mills have begun to reduce costs in production and management. As a result, in terms of raw materials, the quality of iron ore has seriously declined, and in terms of smelting, steel mills have greatly reduced the amount of lime added, and even lowered the grade of lime, resulting in too long blowing time, and even a drop in the pouring rate. Too many times of spot blowing will lead to serious overoxygen phenomenon in the furnace, which seriously affects the service life of the tappi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 陈树村于林辉王伟宇罗勇
Owner 营口东邦环保科技股份有限公司
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