Titaniferous-spinel-added gunning mix for steel converter

A steel-making converter and spinel technology, applied in the field of refractory materials, can solve the problems of poor erosion resistance and erosion resistance, short service life, low use efficiency, etc., so as to improve the erosion resistance and erosion resistance, and reduce production. The effect of improving cost and production efficiency

Active Publication Date: 2013-10-30
攀枝花市银江金勇工贸有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problems of poor corrosion resistance and erosion resistance, short service life, low efficiency and high cost of gunning materials in the prior art, and to provide a steel-making converter with titanium-containing spinel. Gunning material

Method used

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  • Titaniferous-spinel-added gunning mix for steel converter
  • Titaniferous-spinel-added gunning mix for steel converter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] According to the performance index and particle size requirements of the raw materials, by weight percentage, 50% of magnesia, 5% of titanium-containing spinel as aggregate, 10% of titanium-containing spinel as matrix material, 21% of magnesium fire clay, cement 1.5%, silicon micropowder 2%, clay 3%, sodium tripolyphosphate 0.5%, sodium hexametaphosphate 4%, borax 3%, first add magnesia and titanium spinel to the mixing equipment, and then sieve the borax Then add it together with magnesium fire mud, and finally add sodium hexametaphosphate, sodium tripolyphosphate, cement, silica micropowder and clay fine powder. After fully stirring, the finished gunning material for steelmaking converter is obtained after inspection and packaging.

Embodiment 2

[0067] According to the performance index and particle size requirements of the raw materials, 60% of magnesia, 4% of titanium-containing spinel as aggregate, 6% of titanium-containing spinel as matrix material, 20% of magnesium fire clay, cement 2%, 3% silicon micropowder, 1% clay, 1% sodium tripolyphosphate, 1% sodium hexametaphosphate, 2% borax, first add magnesia and titanium spinel to the mixing equipment, and then sieve the borax Then add it together with magnesium fire mud, and finally add sodium hexametaphosphate, sodium tripolyphosphate, cement, silica micropowder and clay fine powder. After fully stirring, the finished gunning material for steelmaking converter is obtained after inspection and packaging.

Embodiment 3

[0069] According to the performance index and particle size requirements of raw materials, by weight percentage, 53% of magnesia, 6% of titanium-containing spinel as aggregate, 8% of titanium-containing spinel as matrix material, 20% of magnesium fire clay, cement 1.4%, silicon micropowder 4%, clay 1.5%, sodium tripolyphosphate 0.1%, sodium hexametaphosphate 2%, borax 4%, first add magnesia and titanium spinel in the mixing equipment, and then sieve the borax Then add it together with magnesium fire mud, and finally add sodium hexametaphosphate, sodium tripolyphosphate, cement, silica micropowder and clay fine powder. After fully stirring, the finished gunning material for steelmaking converter is obtained after inspection and packaging.

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Abstract

The invention relates to a titaniferous-spinel-added gunning mix for a steel converter, belonging to the field of refractory materials. The gunning mix comprises the following raw materials in percentage by weight: 50-60% of magnesia, 4-8% of titaniferous spinel as aggregate, 6-15% of titaniferous spinel as substrate, 20-30% of magnesium fireclay, 1-5% of cement, 2-4% of silicon micropowder, 1-3% of clay, 0.1-1% of sodium tripolyphosphate, 1-4% of sodium hexametaphosphate and 2-4% of borax. The raw materials are evenly mixed in a mixing plant to obtain the finished product. The byproduct titaniferous spinel of the ferrotitanium ferroalloy smelting product is used instead of part of magnesia and magnesium fireclay as the aggregate and substrate, thereby lowering the production cost, solving the problem of comprehensive utilization of the byproduct in the ferrotitanium production as well as the problem of environmental protection, and greatly prolonging the service life of the gunning mix. Every time the spray repair is carried out, the titaniferous-spinel-added gunning mix can be used by 8-12 furnaces, so the production efficiency of the steel converter is greatly enhanced.

Description

technical field [0001] The invention relates to a gunning material for a converter, in particular to a gunning material for a steel-making converter added with titanium-containing spinel, and belongs to the field of refractory materials. Background technique [0002] The gunning material is composed of refractory materials with certain particle gradation, chemical binders and admixtures. Steelmaking converter gunning material is mainly used for the repair of converter lining, and the semi-dry gunning material with magnesia as aggregate is mainly used at this stage, but the following outstanding problems were found in the use process: 1. Use The service life is short. Generally, only 4 to 8 furnaces can be used for each gunning, so the use efficiency of the steelmaking converter is affected. 2. Due to the serious hydration problem of magnesia, the anti-erosion ability of gunning material is poor. 3. Due to the high production cost of fused magnesia, high-quality sintered ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66
Inventor 何金勇蒲芝明许华林
Owner 攀枝花市银江金勇工贸有限责任公司
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