Agitation Effect on APT Crystal

Agitation can promote the relative movement between solid and liquid, and make the concentration and the temperature in the solution even. Moreover is also favorable for crystalline grains growing evenly in all directions, so coarse grains with large apparent density can been obtained. The crystalline grains may be fined when the speed of agitation is very great. For this reason, experiments of two different kinds of agitation, mechanical agitation and air agitation, has been carried out. The experiments indicate that the apparent density of APT crystals obtained by air agitation is usually coarser than that obtained by mechanical agitation. This may be because the mechanical action upon the crystal caused by air flow is weaker than that caused by mechanical agitation.

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