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Castable specially used for coal-injection ducts of cement kilns

A coal-injection pipe and castable technology, which is applied in the field of high-temperature materials for building materials, can solve problems such as uneven distribution of pores, segregation of castables, and poor workability, so as to improve corrosion resistance, prolong service life, and improve thermal shock resistance Effect

Active Publication Date: 2015-02-18
晋城山水合聚水泥有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a castable for coal injection pipes, which solves the defects of poor constructability and castable segregation, many pores and uneven distribution of pores caused by poor constructability

Method used

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  • Castable specially used for coal-injection ducts of cement kilns
  • Castable specially used for coal-injection ducts of cement kilns

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] A special castable for cement kiln coal injection pipe, the weight percentage of the components contained in it is:

[0063] Aluminum titanate 25%

[0064] Synthetic moissanite 20%

[0065] Brown fused alumina 25%

[0066] Strontium titanate powder 8%

[0067] Zirconium carbonate powder 5%

[0068] Andalusite Powder 1%

[0069] Zinc silicate 3%

[0070] Alumina fine powder 5%

[0071] Pure calcium aluminate cement 6%

[0072] Terbium oxide 2%

[0073] C 5 h 10 N 6 o 2 0.2%

[0074] Heat-resistant steel fiber 0.5%

[0075] Sulfonated styrene-maleic anhydride copolymer 0.05%

[0076] Polyether polycarboxylic acid 0.1%

Embodiment 2

[0078] A special castable for cement kiln coal injection pipe, the weight percentage of the components contained in it is:

[0079] Aluminum titanate 15%

[0080] Synthetic moissanite 20%

[0081] Brown fused alumina 30%

[0082] Strontium titanate powder 10%

[0083] Zirconium carbonate powder 8%

[0084] Andalusite Powder 2%

[0085] Zinc silicate 3%

[0086] Alumina fine powder 5%

[0087] Pure calcium aluminate cement 6%

[0088] Terbium oxide 1%

[0089] C 5 h 10 N 6 o 2 0.2%

[0090] Heat-resistant steel fiber 0.5%

[0091] Sulfonated styrene-maleic anhydride copolymer 0.05%

[0092] Polyether polycarboxylic acid 0.1%.

Embodiment 3

[0094] A special castable for cement kiln coal injection pipe, the weight percentage of the components contained in it is:

[0095] Aluminum titanate 20%

[0096] Synthetic moissanite 15%

[0097] Brown fused alumina 30%

[0098] Strontium titanate powder 10%

[0099] Zirconium carbonate powder 8%

[0100] Andalusite powder 2%

[0101] Zinc silicate 3%

[0102] Alumina fine powder 5%

[0103] Pure calcium aluminate cement 5%

[0104] Terbium oxide 2%

[0105] C 5 h 10 N 6 o 2 0.2%

[0106] Heat-resistant steel fiber 0.5%

[0107] Sulfonated styrene-maleic anhydride copolymer 0.05%

[0108] Polyether polycarboxylic acid 0.1%

[0109] Tc 2 o 7 0.05%.

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Abstract

The invention aims to provide a castable specially used for coal-injection ducts of cement kilns. By adopting the castable, the problem of non-uniformity of tissue structures of current castables can be solved, the defects of poor constructability and castable segregation, more pores and non-uniformity of pore distribution caused by poor constructability are overcome, the phenomena of no wear resistance, spalling, no erosion resistance, and the like of kiln mouths can be effectively improved, and the service lives of the mouths of the cement kilns can be substantially prolonged.

Description

technical field [0001] The invention relates to the field of high-temperature materials for building materials, in particular to a castable special for cement kiln coal injection pipes. Background technique [0002] At present, my country's new dry process cement production line is developing rapidly, and the cement production capacity has been severely oversupplied. Therefore, it is the only way for cement production enterprises to increase unit production efficiency and reduce production costs to maximize profits. And improving the operation rate of the cement production line is an important condition for improving the production efficiency of the cement kiln. However, the life of the cement kiln coal injection pipe has an important impact on the operation cycle of the entire production line. The coal injection pipe of the cement kiln is used in harsh conditions. In addition to the high temperature in the kiln up to 1400 ℃, it also bears the scour of the cement kiln clin...

Claims

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Application Information

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IPC IPC(8): C04B35/66
CPCC04B28/06C04B35/66C04B14/322C04B14/26C04B14/041C04B14/04C04B14/303C04B14/305C04B14/48C04B24/32C04B24/127C04B24/22C04B22/06
Inventor 张婷
Owner 晋城山水合聚水泥有限公司