Effect of heat-assisted grinding of a calcium hydroxide-gibbsite mixture on formation of hydrated calcium aluminate and its hydration behavior

Junya Kano, Hiroshi Yamashita, Fumio Saito

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Heat-assisted grinding of a mixture of Al(OH)3 and Ca(OH)2 was conducted at different temperatures ranging from room temperature (about 293 K) to 773 K using a tumbling ball mill. The grinding of the mixture for up to 100 h at 373 K enabled us to synthesize hydrated calcium aluminate directly. This compound was not formed by grinding at room temperature nor at a temperature higher than 473 K. All the mixture ground for 100 h at any temperature was transformed into excess hydrated calcium aluminate by the addition of water but the unground mixture remained unchanged.

Original languageEnglish
Pages (from-to)279-280
Number of pages2
JournalPowder Technology
Volume98
Issue number3
DOIs
Publication statusPublished - 1998 Aug 15

Keywords

  • Calcium aluminate
  • Heat-assisted grinding
  • Mechanochemical synthesis
  • Tumbling ball mill

ASJC Scopus subject areas

  • Chemical Engineering(all)

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