Novel environment-friendly converter rapid repair material

An environmentally friendly and repairing material technology, applied in the metallurgical field, can solve the problems of high cost and long time, and achieve the effects of high adhesion rate, short sintering time and long service life

Inactive Publication Date: 2020-10-20
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

The traditional repairing method is to repair the furnace through measures such as tar bricks and large fabrics, and each repair requires a long time for sintering, which takes about 40 minutes, which is long and expensive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0025] A novel environment-friendly quick repair material for converters, comprising magnesite block and graphite, the mass fraction of the magnesite block is 95 parts, and the mass fraction of the graphite is 5 parts. The size of the magnesite block is 80mm, and SiO in the magnesite block 2 The number of parts by mass is 6 parts, Al 2 o 3 The mass parts of MgO is 0.5 parts, and the mass parts of MgO is 50 parts. The particle size of the graphite is 80 mesh, and the mass percentage of carbon in the graphite is 90%.

[0026] The new environment-friendly converter quick repair material adjusts the slag system to the following state in the first batch before repairing the furnace:

[0027] The oxidative property of the terminal slag liquid is controlled at <700ppm;

[0028] The mass percentage composition of FeO is controlled at 8%;

[0029] The alkalinity of the terminal slag liquid is controlled at 2.8, and the alkalinity of the slag liquid is CaO and SiO 2 The mass ratio...

specific Embodiment 2

[0043] A novel environment-friendly quick repair material for converters, which comprises magnesite block and graphite, the mass fraction of the magnesite block is 97 parts, and the mass fraction of the graphite is 3 parts. The size of the magnesite block is 150mm, and SiO in the magnesite block 2 The number of parts by mass is 10 parts, Al 2 o 3 The mass parts of MgO is 0.1 parts, and the mass parts of MgO is 40 parts. The particle size of the graphite is 150 mesh, and the mass percentage of carbon in the graphite is 95%.

[0044] The new environment-friendly converter quick repair material adjusts the slag system to the following state in the first batch before repairing the furnace:

[0045] The oxidative property of the terminal slag liquid is controlled at <700ppm;

[0046] The mass percentage composition of FeO is controlled at 10%;

[0047] The basicity of the slag liquid at the end is controlled at 3.2, and the basicity of the slag liquid is CaO and SiO 2 The mas...

specific Embodiment 3

[0062] A novel environment-friendly quick repair material for converters, comprising magnesite blocks and graphite, the mass fraction of the magnesite blocks is 96 parts, and the mass fraction of the graphite is 4 parts. The size of the magnesite block is 100mm, and SiO in the magnesite block 2 The number of parts by mass is 8 parts, Al 2 o 3 The mass parts of MgO is 0.3 parts, and the mass parts of MgO is 45 parts. The particle size of the graphite is 100 mesh, and the mass percentage of carbon in the graphite is 95%.

[0063] The new environment-friendly converter quick repair material adjusts the slag system to the following state in the first batch before repairing the furnace:

[0064] The oxidative property of the terminal slag liquid is controlled at <700ppm;

[0065] The mass percentage composition of FeO is controlled at 9%;

[0066] The basicity of the slag liquid at the end is controlled at 3.0, and the basicity of the slag liquid is CaO and SiO 2 The mass rat...

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PUM

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Abstract

The invention relates to a novel environment-friendly converter rapid repair material, which comprises the following components in parts by mass: 95-97 parts of magnesite blocks and 3-5 parts of graphite, wherein the size of the magnesite blocks is 80-150mm, the particle size of the graphite is 80-150 meshes, and the mass percentage content of carbon in the graphite is not less than 90%. The repair material is prepared by mixing a refractory raw material (magnesite blocks) and an antioxidant (graphite), and has the characteristics of high adhesion rate, no smoke, short sintering time and longservice life.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a novel environment-friendly quick repair material for a converter. Background technique [0002] The furnace age of the converter is a comprehensive key economic and technical index in the converter steelmaking. Increasing the furnace life can stabilize production and increase converter productivity, reduce refractory consumption, and effectively reduce production costs. The main factor affecting the life of the converter is the rate at which the converter lining is eroded. In order to ensure the effectiveness of the furnace lining and increase the furnace life of the converter, it is necessary to carry out partial repairs to the furnace lining of the converter frequently. The traditional furnace repair method is to repair the furnace through measures such as tar bricks and large fabrics, and each repair requires a long time for sintering, which takes about 40 m...

Claims

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Application Information

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IPC IPC(8): C04B35/043C21C5/44
CPCC04B35/043C21C5/44C04B2235/3418C04B2235/3217C04B2235/425Y02P10/20
Inventor 陈东风
Owner 鞍山赛诺新材料有限公司
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