Croatica Chemica Acta, Vol. 27 No. 2, 1955.
Original scientific paper
The Kinetics of the Formation of Aluminium Hydroxyde by Seeding Sodium Aluminate Solutions with Hydrargillite Crystals. II. Experiments with Particle-size-classified Seed
S. Maričić
; Institute of Light Metals, Zagreb, Croatia, Yugoslavia
I. Markovčić
; Institute of Light Metals, Zagreb, Croatia, Yugoslavia
Abstract
The decomposition of sodium aluminate solutions by seeding with hydrargillite-crystals occurs simultaneously in three defferent ways by: (a) crystal-growth, (b) formation of firm-binded-agglomerates (intercrystallization) and (c) creation of new crystallites. By the experimental technic applied only the predominations of (b) or (c) are proved, but not their relative intensities. The last two mechanisms are exclusively characteristic for the particlesize-range < 20 microns (especially for the particles ~ 10 microns). The way of the acting of the seed depends on the absolute amount as well as on its size distribution.
Keywords
Hrčak ID:
247921
URI
Publication date:
1.7.1955.
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