FIELD: methods and plants for increase of volume density of aerated powders.
SUBSTANCE: proposed method of compacting the powder containing oxide or phosphate of metal consists in placing the powder in container and increasing the pressure in its area above atmospheric pressure sufficient for compacting the powder before diffusion of considerable part of gas into powder. Powder containing oxide or phosphate of metal is placed in container and its volume density is increased. Then, concentrated suspension of pigment which is titanium dioxide is prepared. Specification gives description of plant proposed for increase of volume density of powder containing oxide or phosphate of metal and plant for increase of volume density of aerated loose pigment which is just titanium dioxide.
EFFECT: increased volume density of aerated powder; improved consistency; facilitated dispersion in latex paints.
22 cl, 6 dwg, 3 tbl, 8 ex
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