Aluminum titanate sintering

Taruta, S., Itou, Y., Takusagawa, N., Okada K. and Otsuka, N. Influence of aluminum titanate formation on sintering of bimodal size-distributed alumina powder mixtures , J. Am. Ceram. Soc. 80 (1987) 551-556. 

In 1990, appioximately 66,000 metric tons of alumina trihydiate [12252-70-9] AI2O2 3H20, the most widely used flame retardant, was used to inhibit the flammabihty of plastics processed at low temperatures. Alumina trihydrate is manufactured from either bauxite ore or recovered aluminum by either the Bayer or sinter processes (25). In the Bayer process, the bauxite ore is digested in a caustic solution, then filtered to remove siUcate, titanate, and iron impurities. The alumina trihydrate is recovered from the filtered solution by precipitation. In the sinter process the aluminum is leached from the ore using a solution of soda and lime from which pure alumina trihydrate is recovered (see Aluminum compounds). 

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