I. Blagojevic et al., Influence of decomposition parameters on agglomeration process and total soda content in precipitated Al(OH)(3), J CRYST GR, 200(3-4), 1999, pp. 558-564
Grain size composition of precipitated Al(OH)(3) is dependent on the mechan
ism of decomposition process of the caustic solution which determines cryst
al growth process, agglomeration process and secondary nucleation. Because
the literature data shows that the growth rate is very low, the agglomerati
on process plays an important role in increasing the initial particle size.
On the other hand, the agglomeration process enables the inclusion of impu
rities by the grain boundary of sticking Al(OH)(3) particles, above all, th
e inclusion of soda Na2O.
In this paper we investigate the in fluence of caustic soda concentration N
a2O(c), that is the supersaturation of the solution, seed charge and seed g
rain size on the agglomeration and secondary nucleation processes and total
soda content in precipitated Al(OH)(3). The results have shown that the fa
ctor which causes the increase of the agglomeration process also causes the
increase of total soda content in precipitated AI(OH),. (C) 1999 Elsevier
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