C - Chemistry – Metallurgy – 01 – F
Patent
C - Chemistry, Metallurgy
01
F
23/103
C01F 11/46 (2006.01)
Patent
CA 1175209
I-169- (Fl-8101) ABSTRACT OF THE DISCLOSURE A continuous process for the production of light-weight calcium sulfate which is fibrous a-type calcium sulfate hemihy- drate. The product may be in the form of spherical particles formed of intertwined fibers of the fibrous a-type calcium sulfate hemihydrate. The said product is obtained by passing an aqueous slurry of calcium sulfate through a tubular reactor and injecting steam into said aqueous slurry in said tubular reactor to hydrothermally convert the feed calcium sulfate into said fibrous a-type calcium sulfate hemihydrate.
374609
Minahara Toshikuni
Nishitani Hiroshi
George H. Riches And Associates
Idemitsu Kosan Company Limited
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