Preparation method of glucose combined magnesia carbon brick

A technology of glucose binding and glucose binding agent, which is applied in the field of preparation of glucose-bonded magnesia-carbon bricks, can solve environmental and human health hazards and other problems, and achieve strong slag erosion resistance, reduced production costs, and good thermal shock stability.

Inactive Publication Date: 2017-10-13
CHINA UNIV OF GEOSCIENCES (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention is based on the fact that the commonly used binders for magnesia-carbon bricks are phenolic resin and coal tar pitch, which will release harmful gases such as formaldehyde and phenolic compounds in the process of research and development, pr

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A production process of glucose-bonded magnesia-carbon bricks:

[0020] Raw materials: The quality requirement of fused magnesia is MgO content greater than 97.0%, other CaO, SiO 2 , Fe 2 o 3 The total content of other impurities is less than 3.0%, and the particle sizes are 1mm-3mm, 0mm-1mm, and 0.074mm, respectively. The amount of fused magnesia particles with a particle size of 1mm to 3mm is 30%, the amount of fused magnesia particles with a particle size of 0mm to 1mm is 35%, and the amount of fused magnesia fine powder with a particle size of 0.074mm is 23%. The total addition of magnesia is 88% (mass percentage). The quality requirements of flake graphite are that the carbon content is greater than 99.0%, the total content of other impurities is less than 1.0%, the particle size is 0.15mm, and the total addition amount is 9.0%. The additive uses metal aluminum powder, and the quality requirement of metal aluminum powder is Al 2 o 3 The content is greater than...

Embodiment 2

[0026] A production process of glucose-bonded magnesia-carbon bricks:

[0027] Raw materials: The quality requirement of fused magnesia is MgO content greater than 97.0%, other CaO, SiO 2 , Fe 2 o 3 The total content of other impurities is less than 3.0%, and the particle sizes are 1mm-3mm, 0mm-1mm, and 0.074mm, respectively. The amount of fused magnesia particles with a particle size of 1mm to 3mm is 30%, the amount of fused magnesia particles with a particle size of 0mm to 1mm is 35%, and the amount of fused magnesia fine powder with a particle size of 0.074mm is 23%. The total addition of magnesia is 88% (mass percentage). The quality requirements of flake graphite are that the carbon content is greater than 99.0%, the total content of other impurities is less than 1.0%, the particle size is 0.15mm, and the total addition amount is 9.0%. The additive uses metal aluminum powder, and the quality requirement of metal aluminum powder is Al 2 o 3 The content is greater than...

Embodiment 3

[0033] A production process of glucose-bonded magnesia-carbon bricks:

[0034] Raw materials: The quality requirement of fused magnesia is MgO content greater than 97.0%, other CaO, SiO 2 , Fe 2 o 3 The total content of other impurities is less than 3.0%, and the particle sizes are 1mm-3mm, 0mm-1mm, and 0.074mm, respectively. The amount of fused magnesia particles with a particle size of 1mm to 3mm is 30%, the amount of fused magnesia particles with a particle size of 0mm to 1mm is 35%, and the amount of fused magnesia fine powder with a particle size of 0.074mm is 23%. The total addition of magnesia is 88% (mass percentage). The quality requirements of flake graphite are that the carbon content is greater than 99.0%, the total content of other impurities is less than 1.0%, the particle size is 0.15mm, and the total addition amount is 9.0%. The additive uses metal aluminum powder, and the quality requirement of metal aluminum powder is Al 2 o 3 The content is greater than...

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Abstract

Belonging to the technical field of refractory material preparation, the invention relates to a preparation method of a glucose combined magnesia carbon brick. The method adopts magnesite (fused magnesite or sintered magnesite) and a carbon raw material (flake graphite, carbon black or electrode chip) as the main raw materials, glucose is added as a binding agent and other additives are added, and by means of compounding, mixing, aging, molding, drying and other technological processes are carried out to obtain a non-fired magnesia carbon brick. The refractory material provides low temperature strength through the glucose binding agent, and the glucose binding agent undergoes thermal decomposition and carbonization to form a carbon structure so as to provide medium and high temperature strength. Compared with the traditional phenolic resin combined magnesia carbon brick, the glucose combined magnesia carbon brick has the advantages of environmental friendliness and low cost. The preparation method also provides the technical and theoretical basis for application of glucose binding agent to other high-temperature resistant materials.

Description

Technical field: [0001] The invention relates to a method for preparing glucose-bonded magnesia-carbon bricks, belonging to the technical field of refractory material preparation. Background technique: [0002] Carbon-containing refractories are high-performance refractories developed to adapt to new iron and steel metallurgical technologies and new processes. Magnesia-carbon bricks are an important part of the refractory system. It has both the high melting point of MgO and carbon and excellent chemical stability. At the same time, the introduction of carbon overcomes the shortcomings of MgO's high thermal expansion coefficient, easy wetting by slag, and poor spalling resistance, making magnesia carbon bricks have corrosion resistance, good thermal shock resistance and good resistance to metal melts and high-temperature slag It has the advantages of strong impermeability and other advantages, and is mainly used in clean steel smelting ladles, casthouses, molten iron storage...

Claims

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Application Information

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IPC IPC(8): C04B35/66
CPCC04B35/66C04B2235/3206C04B2235/402C04B2235/425C04B2235/48C04B2235/77C04B2235/96
Inventor 朱凌黄朝晖吴小文
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
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