Castable special for 5000T cement kiln coal-injection duct

Abstract

The invention aims at providing a castable special for a 5000T cement kiln coal-injection pipe. The castable can improve an existing uneven organization structure of an existing castable, and the defects of poor constructability and castable segregation, multiple pores and uneven pore distribution brought by the poor constructability are overcome. By the adoption of the measures, the phenomenon that a kilneye is not abraded, undergoes chip off-falling, is not resistant to corrosion and the like can be effectively improved, and the service life of the kilneye of a cement kiln can be remarkably prolonged.

Description

Technical field

[0001] The invention relates to the field of high-temperature materials for building materials, in particular to a special castable for a 5000T cement kiln coal injection pipe. Background technique

[0002] At present, my country's new dry process cement production line is developing rapidly, and cement production capacity has been seriously surplus. Therefore, cement production enterprises improve unit production efficiency and reduce production costs are the only way to maximize profits. Increasing the operation rate of cement production lines is an important condition for improving the production efficiency of cement kilns. 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 pipes of cement kilns are used in harsh conditions. In addition to withstanding the high temperature in the kiln up to 1400℃, they also bear the erosion of cement kiln clinker, the therma...

Examples

Embodiment 1

[0059] A special castable for coal injection pipe of 5000T cement kiln, the weight percentage of its components is:

[0060] Zinc Aluminum Spinel 25%

[0061] Synthetic moissanite 20%

[0062] Brown fused alumina 25%

[0063] Strontium Titanate Powder 8%

[0064] Zirconium carbonate powder 5%

[0065] Andalusite powder 1%

[0066] Zinc silicate 3%

[0067] Alumina powder 5%

[0068] Pure calcium aluminate cement 6%

[0069] Terbium oxide 2%

[0070] C 5 H 10 N 6 O 2 0.2%

[0071] Heat-resistant steel fiber 0.5%

[0072] Sulfonated styrene-maleic anhydride copolymer 0.05%

[0073] Polyether polycarboxylic acid 0.1%

Embodiment 2

[0075] A special castable for coal injection pipe of 5000T cement kiln, the weight percentage of its components is:

[0076] Zinc Aluminum Spinel 15%

[0077] Synthetic moissanite 20%

[0078] Brown fused alumina 30%

[0079] Strontium Titanate Powder 10%

[0080] Zirconium carbonate powder 8%

[0081] Andalusite powder 2%

[0082] Zinc silicate 3%

[0083] Alumina powder 5%

[0084] Pure calcium aluminate cement 6%

[0085] Terbium oxide 1%

[0086] C 5 H 10 N 6 O 2 0.2%

[0087] Heat-resistant steel fiber 0.5%

[0088] Sulfonated styrene-maleic anhydride copolymer 0.05%

[0089] Polyether polycarboxylic acid 0.1%.

Embodiment 3

[0091] A special castable for coal injection pipe of 5000T cement kiln, the weight percentage of its components is:

[0092] Zinc Aluminum Spinel 20%

[0093] Synthetic moissanite 15%

[0094] Brown fused alumina 30%

[0095] Strontium Titanate Powder 10%

[0096] Zirconium carbonate powder 8%

[0097] Andalusite powder 2%

[0098] Zinc silicate 3%

[0099] Alumina powder 5%

[0100] Pure calcium aluminate cement 5%

[0101] Terbium oxide 2%

[0102] C 5 H 10 N 6 O 2 0.2%

[0103] Heat-resistant steel fiber 0.5%

[0104] Sulfonated styrene-maleic anhydride copolymer 0.05%

[0105] Polyether polycarboxylic acid 0.1%

[0106] Tc 2 O 7 0.05.

[0107] The components used in the above embodiments are products well-known to those skilled in the art, and are available on the market. The addition of synthetic moissanite, strontium titanate, brown corundum, and steel fiber is beneficial to the wear resistance of the castable And thermal shock; andalusite has micro-expansion; the introduction of zirconium ...

Technical field

[0001] The invention relates to the field of high-temperature materials for building materials, in particular to a special castable for a 5000T cement kiln coal injection pipe. Background technique

[0002] At present, my country's new dry process cement production line is developing rapidly, and cement production capacity has been seriously surplus. Therefore, cement production enterprises improve unit production efficiency and reduce production costs are the only way to maximize profits. Increasing the operation rate of cement production lines is an important condition for improving the production efficiency of cement kilns. 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 pipes of cement kilns are used in harsh conditions. In addition to withstanding the high temperature in the kiln up to 1400℃, they also bear the erosion of cement kiln clinker, the therma...

Examples

Embodiment 1

[0059] A special castable for coal injection pipe of 5000T cement kiln, the weight percentage of its components is:

[0060] Zinc Aluminum Spinel 25%

[0061] Synthetic moissanite 20%

[0062] Brown fused alumina 25%

[0063] Strontium Titanate Powder 8%

[0064] Zirconium carbonate powder 5%

[0065] Andalusite powder 1%

[0066] Zinc silicate 3%

[0067] Alumina powder 5%

[0068] Pure calcium aluminate cement 6%

[0069] Terbium oxide 2%

[0070] C 5 H 10 N 6 O 2 0.2%

[0071] Heat-resistant steel fiber 0.5%

[0072] Sulfonated styrene-maleic anhydride copolymer 0.05%

[0073] Polyether polycarboxylic acid 0.1%

Embodiment 2

[0075] A special castable for coal injection pipe of 5000T cement kiln, the weight percentage of its components is:

[0076] Zinc Aluminum Spinel 15%

[0077] Synthetic moissanite 20%

[0078] Brown fused alumina 30%

[0079] Strontium Titanate Powder 10%

[0080] Zirconium carbonate powder 8%

[0081] Andalusite powder 2%

[0082] Zinc silicate 3%

[0083] Alumina powder 5%

[0084] Pure calcium aluminate cement 6%

[0085] Terbium oxide 1%

[0086] C 5 H 10 N 6 O 2 0.2%

[0087] Heat-resistant steel fiber 0.5%

[0088] Sulfonated styrene-maleic anhydride copolymer 0.05%

[0089] Polyether polycarboxylic acid 0.1%.

Embodiment 3

[0091] A special castable for coal injection pipe of 5000T cement kiln, the weight percentage of its components is:

[0092] Zinc Aluminum Spinel 20%

[0093] Synthetic moissanite 15%

[0094] Brown fused alumina 30%

[0095] Strontium Titanate Powder 10%

[0096] Zirconium carbonate powder 8%

[0097] Andalusite powder 2%

[0098] Zinc silicate 3%

[0099] Alumina powder 5%

[0100] Pure calcium aluminate cement 5%

[0101] Terbium oxide 2%

[0102] C 5 H 10 N 6 O 2 0.2%

[0103] Heat-resistant steel fiber 0.5%

[0104] Sulfonated styrene-maleic anhydride copolymer 0.05%

[0105] Polyether polycarboxylic acid 0.1%

[0106] Tc 2 O 7 0.05.

[0107] The components used in the above embodiments are products well-known to those skilled in the art, and are available on the market. The addition of synthetic moissanite, strontium titanate, brown corundum, and steel fiber is beneficial to the wear resistance of the castable And thermal shock; andalusite has micro-expansion; the introduction of zirconium ...

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