Assertion: aluminum hydroxide | /r/HasProperty | introduced into second stage
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Source sentences:
text: This invention relates to a process of preparing anhydrous alumina from aluminum hydroxide in a circulating fluidized bed comprising a fluidized-bed reactor 8, a separator 6, and a return line, where the aluminum hydroxide is introduced into the second stage in the direction of gas flow of a two-stage suspension preheater 2 operated by means of the exhaust gases of the fluidized-bed reactor 8 of the circulating flu-idized bed, and is at least partially dehydrated, dehydrated aluminum hydroxide from the second stage of the suspension preheater 2 is introduced into the first stage in the direc-tion of gas flow of a suspension pre-heater 5 operated by means of the exhaust gases' of the fluidized-bed reactor 8 of the circulating fluidized bed, and is furthermore dehydrated and then supplied to the circulating fluidized bed, which is operated by means of oxygen-containing fluidizing gas 10 in-directly heated in a subsequent cooling stage by the alumina produced, and by means of directly heated, oxygen-containing secondary gas 11 supplied at a higher level, where the indi-rect heating of the fluidizing gas is effected in a flu-idized-bed cooler 23.