Titaniferous-spinel-added gunning mix for steel converter

A steel-making converter and spinel technology, which is applied in the field of gunning materials and gunning materials for steel-making converters, can solve the problems of poor corrosion resistance and erosion resistance, low use efficiency, and short service life, and achieve improved Anti-erosion and erosion resistance, improved production efficiency, and reduced production costs

Active Publication Date: 2012-08-15
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 effi

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
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Example Embodiment

[0064] Example 1

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

Example Embodiment

[0066] Example 2

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

Example Embodiment

[0068] Example 3

[0069] According to the performance indicators and particle size requirements of the raw materials, in weight percentage, 53% magnesia, 6% titanium-containing spinel as aggregate, 8% titanium-containing spinel as matrix material, 20% magnesia fire clay, and cement 1.4%, silica powder 4%, clay 1.5%, sodium tripolyphosphate 0.1%, sodium hexametaphosphate 2%, borax 4%, first add magnesia, titanium-containing spinel to the mixing equipment, and then sieve the borax Then add it together with the magnesium fire clay, and finally add sodium hexametaphosphate, sodium tripolyphosphate, cement, silica powder and clay powder. After fully mixing, the finished gunning material for steelmaking converter can be 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 steelmaking 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 a certain particle size distribution, chemical binders and admixtures. It is an unshaped refractory material used when repairing the lining of thermal processing equipment by spraying construction methods. Gunning materials for steelmaking converters are mainly used for repairing the lining of converters, and the semi-dry gunning materials with magnesia as aggregate are mainly used at this stage, but some outstanding problems are found in the process of use: 1. The service life is short, and generally only 4 to 8 furnaces can be used for each gunning repair, so the efficiency of the steelmaking converter is affected. 2. Due to the serious hydration pr...

Claims

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Application Information

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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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