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Anhydrous converter large fabric with self-flowing effect

A large material and converter technology, applied in the field of metallurgy, can solve the problems of complicated operation of water-based large material, poor environmental protection and safety hazards of asphalt large material, and achieve the effects of shortening sintering time, improving steelmaking efficiency and reducing labor intensity

Active Publication Date: 2021-04-27
鞍山赛诺新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the above problems, provide a water-free converter large fabric with self-flowing effect, and solve the problems of poor environmental protection of asphalt large fabrics, complicated operation of water-based large fabrics and potential safety hazards in the prior art

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0019] The utility model relates to an anhydrous converter large fabric with self-flowing effect, which includes fused magnesia, flow agent, sintering agent, slaked lime, bentonite, sodium hexametaphosphate, and sodium tripolyphosphate. Among them, 800kg of fused magnesia, 50kg of flow agent, 10kg of sintering agent, 10kg of slaked lime, 10kg of bentonite, 5kg of sodium hexametaphosphate, and 5kg of sodium tripolyphosphate. The flow agent is a mixture of stearic acid and polyvinyl alcohol, and the mass ratio of stearic acid to polyvinyl alcohol is 0.3:3. The above-mentioned materials are stirred and mixed evenly, and then packed into bags for later use.

[0020] The fused magnesia is of industrial purity, the mass percentage of MgO in the fused magnesia is 95.0%, the fused magnesia is sieved with a 14-mesh sieve, and the particle size is 0-1.165 mm. The mass percent content of calcium hydroxide in the slaked lime is 95.0%. The bentonite powder is sieved with a 4-mesh sieve, ...

specific Embodiment 2

[0023] The utility model relates to an anhydrous converter large fabric with self-flowing effect, which includes fused magnesia, flow agent, sintering agent, slaked lime, bentonite, sodium hexametaphosphate, and sodium tripolyphosphate. Among them, 900kg of fused magnesia, 50kg of flow agent, 5kg of sintering agent, 5kg of slaked lime, 5kg of bentonite, 10kg of sodium hexametaphosphate, and 5kg of sodium tripolyphosphate. The flowing agent is a mixture of stearic acid and polyvinyl alcohol, and the mass ratio of stearic acid to polyvinyl alcohol is 1:5. The above-mentioned materials are stirred and mixed evenly, and then packed into bags for later use.

[0024] The fused magnesia is of industrial purity, the mass percentage of MgO in the fused magnesia is 99.0%, the fused magnesia is sieved with a 20-mesh sieve, and the particle size is 0-0.83 mm. The mass percent content of calcium hydroxide in the slaked lime is 90.0%. The bentonite powder is sieved with a 7-mesh sieve, an...

specific Embodiment 3

[0027] The utility model relates to an anhydrous converter large fabric with self-flowing effect, which includes fused magnesia, flow agent, sintering agent, slaked lime, bentonite, sodium hexametaphosphate, and sodium tripolyphosphate. Among them, 800kg of fused magnesia, 80kg of flow agent, 7kg of sintering agent, 7kg of slaked lime, 7kg of bentonite, 7kg of sodium hexametaphosphate, and 7kg of sodium tripolyphosphate. The flow agent is a mixture of stearic acid and polyvinyl alcohol, and the mass ratio of stearic acid to polyvinyl alcohol is 0.3:5. The above-mentioned materials are stirred and mixed evenly, and then packed into bags for later use.

[0028] The fused magnesia is of industrial purity, the mass percentage of MgO in the fused magnesia is 95.0%, the fused magnesia is sieved with a 14-mesh sieve, and the particle size is 0-1.165 mm. The mass percent content of calcium hydroxide in the slaked lime is 95.0%. The bentonite powder is sieved with a 4-mesh sieve, and...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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PUM

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Abstract

The invention relates to an anhydrous converter large fabric with a self-flowing effect, which comprises the following components in parts by mass: 80-90 parts of fused magnesite, 5-8 parts of a flowing agent, 0.5-1 part of a sintering agent, 0.5-1 part of slaked lime, 0.5-1 part of bentonite, 0.5-1 part of sodium hexametaphosphate and 0.5-1 part of sodium tripolyphosphate. The invention has the advantages of short sintering time, no smoke, no odor and no harmful volatile matters; stirring is not needed during sintering, and labor intensity of workers is reduced; water is not required to be added in the sintering process, a high-temperature furnace body is not corroded, the splashing phenomenon is avoided, and the steelmaking efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a waterless converter large fabric with self-flowing effect. Background technique [0002] Converter large fabrics are mainly used to repair the charging side, tapping hole side and furnace bottom of the converter. Repairing the furnace with large material is a necessary means to prolong the life of the converter. At present, the large fabrics used in the market are divided into two categories, one is asphalt combined large fabrics, and the other is environmentally friendly water-based large fabrics. Asphalt-bonded large fabrics have disadvantages such as serious smoke emission, environmental pollution, long sintering time, and short service life during use. With the improvement of the country's environmental protection requirements, traditional large asphalt fabrics have gradually withdrawn from the market. Environmentally friendly water-based large fabrics hav...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/043C04B35/634
CPCC04B35/043C04B35/63416C04B2235/3208C04B2235/349C04B2235/5427
Inventor 陈东风
Owner 鞍山赛诺新材料有限公司
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