Refractory castable for rotary kiln mouth and kiln head hood
A technology of refractory castables and kiln hoods, applied in the field of refractory castables, can solve the problems of short service life, poor thermal shock resistance, easy wear, etc., achieve good construction performance, solve easy wear, and good burst resistance
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Embodiment 1
[0010] A refractory castable for the kiln mouth and kiln head cover of a rotary kiln, including aggregate, fine powder, oxide powder, binder and admixture. The particle size of the aggregate is 1 mm, and the particle size of the fine powder is 0.5 mm. The particle size of the fine powder is 2 μm, the particle size of the binder is 0.01 mm, the amount of each component added by weight ratio is: 40 parts of aggregate, 40 parts of fine powder, 15 parts of oxide fine powder, 2.5 parts of binder, and 2.5 parts of admixture The fine powder is composed of 60 parts of zircon powder and 40 parts of silicon carbide powder; the oxide fine powder includes alumina fine powder; the binder is calcium aluminate cement with an alumina content of 80%; the admixture It consists of 30 parts of metal aluminum powder, 30 parts of organic explosion-proof fiber, 30 parts of sodium hexametaphosphate and 10 parts of heat-resistant steel fiber.
Embodiment 2
[0012] A refractory castable for rotary kiln mouth and kiln head cover, including aggregate, fine powder, oxide micropowder, binder and admixture, the particle size of the aggregate is 3mm, the particle size of the fine powder is less than 0.6mm, and the oxidized The particle size of the fine powder is 3 μm, the particle size of the binder is 0.03, and the weight ratio of each component is: 46 parts of aggregate, 38 parts of fine powder, 12 parts of oxide powder, 2 parts of binder, and 2 parts of admixture; The fine powder is composed of 60 parts of zircon powder and 40 parts of silicon carbide powder; the oxide fine powder includes alumina fine powder and silicon oxide, and the weight ratio of alumina fine powder and silicon oxide is 4:1; the binding agent is Calcium aluminate cement with an alumina content of 80%; the admixture consists of 30 parts of metal aluminum powder, 30 parts of organic explosion-proof fiber, 30 parts of sodium hexametaphosphate and 10 parts of heat-re...
Embodiment 3
[0014] A refractory castable for the kiln mouth and kiln head cover of a rotary kiln, including aggregate, fine powder, oxide powder, binder and admixture, the particle size of the aggregate is 5mm, the particle size of the fine powder is 0.9mm, and the oxide The particle size of the micropowder is 4 μm, the particle size of the binder is 0.05mm, and the amount of each component added by weight ratio is: 50 parts of aggregate, 35 parts of fine powder, 12 parts of oxide micropowder, 1 part of binder, and 2 parts of admixture; Among them, the aggregate is composed of 30 parts of super alumina, 10 parts of corundum, 30 parts of mullite, 15 parts of andalusite, and 15 parts of spinel; the fine powder is composed of 60 parts of zircon powder and 40 parts of silicon carbide powder ; The oxide micropowder includes alumina micropowder; the binder is calcium aluminate cement with an alumina content of 80%; 10 parts and 10 parts of heat-resistant steel fiber.
[0015] Sodium hexametaph...
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