Environment-friendly water-based large fabric for converter fettling

A kind of large-scale, environmentally friendly technology, applied in the field of metallurgy, can solve the problems of human damage to the environment, endanger human health, long sintering time, etc., and achieve the effects of good corrosion resistance, accident avoidance, and short sintering time

Inactive Publication Date: 2020-10-16
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] Because it contains asphalt and resin, it dissolves and volatilizes benzene, aldehyde compounds and a large amount of smoke at high temperature, which is easy to cause harm to the human body and pollute the environment
[0004] A new type of environment-friendly water-based large fabric for converter repairing provided by the present invention can solve the problem that the sintering time of the current large fabric combined with asphalt and resin is too long, and the sintering process releases poison, black smoke, pollutes the environment, endangers human health, and has a long service life. too short

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

[0025] An environment-friendly water-based fabric for repairing the converter, which includes magnesia, binder, slaked lime, and bentonite. The mass parts of the components of magnesia, binder, slaked lime and bentonite are respectively: 80 parts of magnesia, 10 parts of binder, 1 part of slaked lime and 1 part of bentonite.

[0026] The mass percentage of MgO in the magnesia is 85%, wherein the mass ratio of magnesia particle size is: 35 parts of magnesia with a particle size of 0-1 mm, and 25 parts of magnesia with a particle size of 1-5 mm. The mass percent content of sodium calcium hydroxide in the slaked lime is 90%. The particle size of the bentonite powder is sieved through a 200-mesh sieve. The binding agent contains sodium hexametaphosphate, sodium hexametaphosphate, and sodium tripolyphosphate, wherein the mass parts of each component are: 5 parts of sodium hexametaphosphate, 3 parts of sodium hydroxide, and 2 parts of sodium tripolyphosphate.

[0027] The specific...

specific Embodiment 2

[0030] An environment-friendly water-based fabric for repairing the converter, which includes magnesia, binder, slaked lime, and bentonite. The mass parts of the components of magnesia, binder, slaked lime and bentonite are respectively: 90 parts of magnesia, 6 parts of binder, 0.5 part of slaked lime and 0.5 part of bentonite.

[0031] The mass percentage of MgO in the magnesia is 90%, wherein the mass ratio of magnesia particle size is: 25 parts of magnesia with a particle size of 0-1 mm, and 35 parts of magnesia with a particle size of 1-5 mm. The mass percent content of sodium calcium hydroxide in the slaked lime is 95%. The particle size of the bentonite powder is sieved through a 150-mesh sieve. The binding agent contains sodium hexametaphosphate, sodium hexametaphosphate, and sodium tripolyphosphate, wherein the mass parts of each component are: 3 parts of sodium hexametaphosphate, 3 parts of sodium hydroxide, and 2 parts of sodium tripolyphosphate.

[0032] The speci...

specific Embodiment 3

[0035] An environment-friendly water-based fabric for repairing the converter, which includes magnesia, binder, slaked lime, and bentonite. The parts by mass of the magnesia, binder, hydrated lime and bentonite are respectively: 85 parts of magnesia, 8 parts of binder, 0.5 part of hydrated lime and 0.5 part of bentonite.

[0036] The mass percentage of MgO in the magnesia is 95%, wherein the mass ratio of magnesia particle size is: 35 parts of magnesia with a particle size of 0-1 mm, and 35 parts of magnesia with a particle size of 1-5 mm. The mass percent content of sodium calcium hydroxide in the slaked lime is 95%. The particle size of the bentonite powder is sieved with 170 mesh. The binding agent contains sodium hexametaphosphate, sodium hexametaphosphate and sodium tripolyphosphate, wherein the mass parts of each component are: 4 parts of sodium hexametaphosphate, 3 parts of sodium hydroxide and 2 parts of sodium tripolyphosphate.

[0037] The specific operation proces...

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 environment-friendly water-based large fabric for converter fettling. The fabric comprises the following components in parts by weight: 80-90 parts of magnesia, 6-10 partsof binding agent, 0.5-1 part of slaked lime and 0.5-1 part of bentonite. The preparation method comprises the steps: adding water into the supplementary material, stirring to form porridge, pouring the stirred material into a position needing to be repaired in the converter, burning for 15-25 minutes at 800-1350 DEG C, and finishing the repair when the supplementary material is large and the surface material turns red. Compared with a common converter large-area fettling material, the sintering time is shortened by about 30 minutes; during sintering, no smoke, no odor and no harmful volatile matter exist, and no harm is caused to human bodies and the environment; and during sintering, gunning operation can be carried out so that the steelmaking efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to an environment-friendly water-based large fabric for repairing a converter. Background technique [0002] The converter is an important equipment for steelmaking. The maintenance and service life of the converter are also of great concern. The steel facing surface, tapping surface and furnace bottom of the converter are in high temperature for a long time, and are subject to mechanical impact and repeated erosion by slag. Its structure is extremely vulnerable to damage. At present, most of the maintenance converters use large surface self-flowing materials combined with asphalt and resin. This material is directly put into the converter. Under the action of high temperature, the asphalt and resin melt and have good fluidity, but the sintering time is too long Sintering is about 50 minutes, and the service life is too short. Generally, it can be used for 24 hours a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/043C04B35/622C21C5/44C04B35/63C04B35/64
CPCC04B35/043C04B35/622C04B35/6303C04B35/6306C04B35/6316C04B35/64C04B2235/3208C04B2235/3418C04B2235/349C04B2235/447C21C5/44C21C5/441
Inventor 陈东风
Owner 鞍山赛诺新材料有限公司
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