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Wear-resistant anti-erosion castable

A castable and anti-corrosion technology, which is applied in the field of refractory materials, can solve the problems of hidden dangers in molten salt furnace production safety, poor fluidity of castables, and low bonding strength, etc., to achieve improved oxidation resistance, continuous and reliable construction performance, and improved Effect of 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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  • Wear-resistant anti-erosion castable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Example 1, 50 parts of 12-5mm chrome corundum, 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 chrome corundum powder 10 parts, 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, 3 parts of CA60 cement, 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 chrome corundum, 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 chromium corundum powder 8 parts, 325 mesh cutting powder 6 parts, zinc silicate zirconium powder 5 parts, 800 mesh andalusite powder 3 parts, 1000 mesh iron zinc spinel powder 1 part, 1000 mesh zinc oxide powder 5 parts, CA60 cement 6 parts, 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 chrome corundum, 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 chrome corundum powder 9 parts, 3 parts of 325 mesh cutting powder, 3 parts of zinc silicate zirconium 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, 4 parts of CA60 cement, 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 wear-resistant anti-erosion castable. The castable has great ability of resisting CO corrosion in a strong reduction atmosphere and is good in wear resistance and excellent in construction performance. High strength and excellent overall performance of the castable are ensured in the entire temperature stage from the low temperature to the medium temperature and to the high temperature. The defect that the original castable only has good high-temperature performance is overcome.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a wear-resistant and anti-erosion castable. Background technique [0002] The characteristics of high alumina, high silicon, poor grindability and difficult dissolution in my country's durasite-type bauxite have brought great troubles 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 and caus...

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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