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High-strength abrasion-resistant compound castable

A high-temperature wear-resistant and castable technology, which is applied in the field of refractory materials, can solve the problems of hidden dangers in the safety production of molten salt furnaces, poor fluidity of castables, and low bonding strength, so as to improve oxidation resistance, continuous and reliable construction performance, and Effect of improving thermal shock resistance

Inactive Publication Date: 2016-11-09
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-strength abrasion-resistant compound castable

Examples

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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 silicon nitride 10 parts of powder, 5 parts of 325 mesh cutting powder, 5 parts of zinc silicate 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 , plus the 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 silicon nitride 8 parts of 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, 6 parts of CA60 cement , plus the 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 silicon nitride 9 parts of 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, 4 parts of CA60 cement , 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-strength abrasion-resistant castable which has relatively strong CO erosion resistance in a strong reducing atmosphere, and also has better abrasion resistance and good construction performance. In addition, the condition that the castable has relatively high strength and excellent overall performance in the whole temperature stage from low temperature to medium temperature and then to high temperature is ensured, and the defect that the original castable only has better 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 high-temperature wear-resistant composite 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 linin...

Claims

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Application Information

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IPC IPC(8): C04B35/66
CPCC04B35/66
Inventor 万燕杰
Owner 万燕杰
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