The rapid precipitation of magnesium hydroxide from aqueous solutions: Analysis of nucleation and crystal growth kinetics,final nucleus numbers and primary crystal sizes

The studies of the rapid precipitation of magnesium hydroxide, from aqueous solutions of different concentrations by sodium, calcium and ammonium hydroxides, are analysed. The kinetics of nucleation and microcrystallite formation during the induction periods and the kinetics of crystal growth (onto the microcrystallites) to the final primary crystals are examined; the high final nucleus numbers and the sub-microscopic sizes of the final primary crystals are discussed according to Nielsen's theories.