1, high-purity fumed aluminum H&X calcium silicon sulfate alum, ammonium sulfate, ammonium alum was synthesized (ammonium aluminum sulfate), dehydration, pyrolysis of alumina, and then by phase inversion to obtain γ-, α-alumina.
An organic aluminum compound in the polymerization of sticky polyaluminoxane solution, the aluminoxane solution polymerization was dry-spun fiber to obtain an organic aluminum compound, and then calcined alumina fiber.
The organic aluminum compound is polymerized to produce a viscous poly alumoxane solution, which use an ordinary dry spinning method, the fibers made of an H&X white fused alumina suppliers aluminum compound. And then calcined to obtain alumina fibers.
2 Method 1. Crystallized aluminum sulphate dissolved in distilled water, and then slowly added under constant stirring solution of ammonium sulfate, ammonium aluminum sulfate was prepared:
Then heated to 100 ~ 200 ℃, after removal of water of crystallization, a high temperature burning pulverized into a powder, ignition starts at 800 ℃, and then heated to 1250 ~ 1300 ℃ burning 4h, alumina, obtained after cooling.
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