Tertiary air duct curve prefabricated component for cement kiln
A technology for cement kilns and prefabricated parts, applied in the field of refractory materials, can solve problems such as poor erosion resistance, and achieve the effects of improving wear resistance and alkali erosion resistance, prolonging service life and ensuring construction quality.
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Embodiment 1
[0015] A kind of prefabricated part of third air duct curve for cement kiln, which includes 25 parts of 5-8mm black corundum, 15 parts of 3-5mm black corundum, 10 parts of 1-3mm black corundum, and 10 parts of 0 ~1mm black corundum, 10 parts of 0~1mm silicon carbide, 10 parts of silicon carbide powder not more than 200 mesh, 7 parts of brown corundum powder not more than 200 mesh, 4 parts calcium aluminate cement, 3 parts alumina powder, 6 parts silicon Micropowder, 0.10 part of water reducing agent, 0.01 part of explosion-proof fiber, 0.5 part of heat-resistant steel fiber. Al in the black corundum 2 O 3 The mass percentage content is ≥75%. The mass percentage content of SiC in the silicon carbide is ≥95%. Al in the calcium aluminate cement 2 O 3 The mass percentage content is ≥68%. The heat-resistant steel fiber grade is 430.
[0016] The various raw materials are mixed in proportions, and 4.1% by mass water is added to stir evenly, and then poured into a mold to form, and a...
Embodiment 2
[0018] The difference from other embodiments is: a prefabricated part of a third air duct curve for cement kilns, which includes 15 parts of 5-8mm black corundum, 20 parts of 3-5mm black corundum, 15 parts of 1 ~3mm black corundum, 15 parts of 0~1mm black corundum, 10 parts of 0~1mm silicon carbide, 6 parts of silicon carbide powder not greater than 200 mesh, 5 parts of brown corundum powder not greater than 200 mesh, 7 parts of calcium aluminate cement , 3 parts of alumina powder, 4 parts of silicon powder, 0.15 parts of water reducing agent, 0.02 parts of explosion-proof fiber, 1 part of heat-resistant steel fiber.
[0019] The various raw materials are mixed according to the proportion, and then mixed with 5.2% water by mass, and then poured into a mold. After demolding, curing and drying are carried out to obtain the third air duct bending preform for cement kiln.
Embodiment 3
[0021] The difference from other embodiments is: a prefabricated part of a third air duct bend for cement kilns, which includes 15 parts of 5-8mm black corundum, 18 parts of 3-5mm black corundum, and 13 parts of 1 ~3mm black corundum, 12 parts of 0~1mm black corundum, 10 parts of 0~1mm silicon carbide, 6 parts of silicon carbide powder not greater than 200 mesh, 10 parts of brown corundum powder not greater than 200 mesh, 7 parts of calcium aluminate cement , 5 parts of alumina powder, 4 parts of silicon powder, 0.10 parts of water reducing agent, 0.02 parts of explosion-proof fiber, 1 part of heat-resistant steel fiber.
[0022] The various raw materials are mixed in proportions and mixed with 4.5% water by mass, then mixed evenly, then poured into a mold, and cured and dried to obtain a prefabricated third air duct for cement kiln.
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