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High-property fireproof casting material

A refractory castable, high-performance technology, applied in the field of refractory materials, can solve the problems of hidden dangers in molten salt furnace production safety, poor fluidity of castables, low bonding strength, etc., to achieve improved oxidation resistance, continuous and reliable construction performance, Effect of improving thermal shock resistance

Inactive Publication Date: 2017-01-04
万燕杰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of castable has low hardness and poor wear resistance; at the same time, the castable has poor fluidity, solidifies too quickly, and has low early bonding strength, which seriously affects the performance of the product at medium and low temperatures below 900 °C, which poses a threat to the safety of molten salt furnaces. Production brings great hidden dangers. In addition, it is not easy to construct, so it still needs to be improved

Method used

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  • High-property fireproof casting material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Example 1, 50 parts of 12-5mm A88 homogenized material, 10 parts of 5-3mm silicon carbide, 5 parts of 3-1mm calcium hexaaluminate, 4 parts of 1-0mm andalusite, 1 part of 200 mesh Yongji clay, 325 mesh A88 10 parts of chemical powder, 5 parts of 325 mesh cutting powder, 5 parts of zinc silicate zirconium powder, 3 parts of 800 mesh andalusite powder, 1 part of 1000 mesh iron-zinc spinel powder, 3 parts of 1000 mesh zinc oxide powder, CA60 cement 3 parts, plus additive REFPAC ® 100 1 part, plus fluidity improving additive Peramin ® 0.1 part of AL 200, plus 0.1 part of nanocellulose.

Embodiment 2

[0068] Example 2, 50 parts of 12-5mm A88 homogenized material, 7 parts of 5-3mm silicon carbide, 5 parts of 3-1mm calcium hexaaluminate, 3 parts of 1-0mm andalusite, 1 part of 200 mesh Yongji clay, 325 mesh A88 8 parts of chemical powder, 6 parts of 325 mesh cutting powder, 5 parts of zinc silicate zirconium powder, 3 parts of 800 mesh andalusite powder, 1 part of 1000 mesh iron-zinc spinel powder, 5 parts of 1000 mesh zinc oxide powder, CA60 cement 6 parts, plus additive REFPAC ® 100 1 part, plus fluidity improving additive Peramin ® 0.1 part of AL 200, plus 0.1 part of nanocellulose.

Embodiment 3

[0069] Example 3, 55 parts of 12-5mm A88 homogenized material, 8 parts of 5-3mm silicon carbide, 5 parts of 3-1mm calcium hexaaluminate, 3 parts of 1-0mm andalusite, 2 parts of 200 mesh Yongji clay, 325 mesh A88 9 parts of chemical powder, 3 parts of 325 mesh cutting powder, 3 parts of zinc silicate powder, 4 parts of 800 mesh andalusite powder, 1 part of 1000 mesh iron-zinc spinel powder, 3 parts of 1000 mesh zinc oxide powder, CA60 cement 4 parts, plus the additive REFPAC ® 100 1 part, plus fluidity improving additive Peramin ® 0.1 part of AL 200, plus 0.1 part of nanocellulose.

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Abstract

The invention provides a high-property fireproof casting material. The high-property fireproof casting material can have strong CO erosion resistance in strong reducing atmosphere, and also has good abrasion-proof properties and favorable workability; and besides, the condition that the casting material has high intensity and excellent comprehensive properties in the entire temperature stage from low temperature to moderate temperature and to high temperature is also guaranteed, and the defect that a conventional fireproof casting material is only good in high temperature property is overcome.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a high-performance refractory castable. Background technique [0002] Due to the characteristics of high alumina, high silicon, poor grindability and difficult dissolution in my country's durasite-type bauxite, it has brought a lot of trouble to the alumina production process. For now, the pipeline dissolution method has gradually become a The development trend, and the molten salt furnace is the most critical heating equipment in the pipeline dissolution system. [0003] At present, the hearth of the molten salt furnace in an alumina plant is usually integrally cast with high-alumina refractory castables, which makes the structure of the furnace lining very loose or even cracked. In the process of use, the strong erosion of high-temperature flue gas and coal ash, and the fluctuation of furnace temperature will cause serious erosion of the furnace lining ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
CPCC04B35/66
Inventor 万燕杰
Owner 万燕杰
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