Corundum-mullite castable for zinc oxide rotary kiln and preparation method of corundum-mullite castable
The technology of mullite and rotary kiln is applied in the field of corundum-mullite castable for zinc oxide rotary kiln and its preparation, which can solve the problems of high thermal conductivity, poor thermal shock resistance and high thermal conductivity of magnesia-alumina-chrome bricks, Achieve the effects of excellent corrosion resistance, high thermal shock resistance and low thermal conductivity
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Embodiment 1
[0042] A corundum-mullite castable for a zinc oxide rotary kiln and a preparation method thereof. The preparation method described in this embodiment is:
[0043] First with 40wt% porous corundum-barium aluminate particles, 10wt% mullite particles, 15wt% zircon mullite fine powder, 15wt% white corundum fine powder, 5wt% sillimanite fine powder, 10wt% Silicon oxide fine powder, 1wt% samarium oxide fine powder, 1wt% barium sulfate fine powder, 1wt% sialon fine powder and 2wt% titanium silicon carbide fine powder are raw materials, and then 0.02wt% of the raw materials are added Sodium polyphosphate, 1wt% calcium aluminate cement and 15wt% water are uniformly stirred and vibrated to form a corundum-mullite castable for a zinc oxide rotary kiln.
[0044] The preparation method of the porous corundum-barium aluminate particles is: use 85wt% industrial alumina powder and 15wt% barium carbonate powder as a mixture, add 2.0wt% polyvinyl alcohol to the mixture, mix evenly, and press ...
Embodiment 2
[0049] A corundum-mullite castable for a zinc oxide rotary kiln and a preparation method thereof. The preparation method described in this embodiment is:
[0050] First with 60wt% porous corundum-barium aluminate particles, 12wt% mullite particles, 5wt% zircon mullite fine powder, 5wt% white corundum fine powder, 5wt% sillimanite fine powder, 5wt% Silicon oxide fine powder, 2wt% samarium oxide fine powder, 2wt% barium sulfate fine powder, 3wt% sialon fine powder and 1wt% titanium silicon carbide fine powder are raw materials, and 0.03wt% six Sodium metaphosphate, 3wt% calcium aluminate cement and 7wt% water are uniformly stirred and vibrated to form a corundum-mullite castable for a zinc oxide rotary kiln.
[0051] The preparation method of the porous corundum-barium aluminate particles is: use 88wt% industrial alumina powder and 12wt% barium carbonate powder as a mixture, add 3.5wt% polyvinyl alcohol to the mixture, mix evenly, and press Shaping, drying, heat preservation a...
Embodiment 3
[0056] A corundum-mullite castable for a zinc oxide rotary kiln and a preparation method thereof. The preparation method described in this embodiment is:
[0057] First with 42wt% porous corundum-barium aluminate particles, 20wt% mullite particles, 6wt% zircon mullite fine powder, 7wt% white corundum fine powder, 8wt% sillimanite fine powder, 6wt% Silicon oxide fine powder, 5wt% samarium oxide fine powder, 3wt% barium sulfate fine powder, 2wt% sialon fine powder and 1wt% titanium silicon carbide fine powder are raw materials, and 0.02wt% six Sodium metaphosphate, 4wt% calcium aluminate cement and 10wt% water are uniformly stirred, vibrated and molded to prepare a corundum-mullite castable for a zinc oxide rotary kiln.
[0058] The preparation method of the porous corundum-barium aluminate particles is: use 90wt% industrial alumina powder and 10wt% barium carbonate powder as a mixture, add 5.0wt% polyvinyl alcohol to the mixture, mix evenly, and press Shaping, drying, heat pr...
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