Naslov
Influence of crystallization parameters on aluminium trihydroxide particle size

Autori
Perić, Jelena ; Krstulović, Ruža ; Ferić, Tereza

Izvornik
Travaux de l`ICSOBA (0350-7548) 19 (1989), 22; 415-421

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
aluminium trihydroxide ; crystallization ; Bayer process

Sažetak
This paper deals with the process of crystallization of Al(OH)_3 from the synthetic aluminate solution in dependence on temperature (30-60°C) and seed addition (100-200 g/dmˆ 3). In the process the time changes in Al_2O_3 concentration in the aluminate solution were followed by determination of the size and distribution of Al(OH)_3 crystal particles. The experiments were carried out isothermally in a laboratory reaction vessel of 0.250 dm_3, with double walls through which thermally stabilized water circulated at the operating temperature of the liquid ± ; 0.2°C. A magnetic mixer was used, at a rate sufficient to prevent sedimentation of particles during crystallization. The aluminate solution was synthesized from analytically pure NaOH and industrial Al(OH)_3 obtained by Bayer process. On the basis of experiments, the results are presented graphically, and the factors influencing precipitation and crystallization are discussed.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

POVEZANOST RADA