Long term-stabilized magnesium hydroxide suspension and a proces

Details Long term-stabilized magnesium hydroxide suspension and a proces Long term-stabilized magnesium hydroxide suspension and a proces

1997-02-25

1998-09-22

Langel, Wayne

Chemistry of inorganic compounds

With additive

423636, C01F 514

Patent

active

058110690

ABSTRACT:
A long term stabilized magnesium hydroxide suspension which can be stored for at least six months without substantial agitation and without undergo substantial settlement nor solid hard substrate formation, comprising a solid content of about 51% to 62%; a water content of about 38% to 49%; a viscosity of about 50 to 400 cp.; an average particle size of about 1 to 2.5 microns; a Mg(OH).sub.2 content of about 50% to 60%; an equivalent magnesium oxide content of 34% to 42%; and including an anionic polyelectrolyte as a dispersant agent, and which is obtained by washing, filtering and repulping magnesium hydroxide solids to obtain agglomerated solid particles, dispersing the agglomerated solid particles by comminution in a dispersing equipment, to reduce the particle size providing a dispersed product, grinding the dispersed product to additionally reduce the particle size to about 2 microns; and adding an anionic polyelectrolyte at a concentration of at least 25%, in an amount of about 0.5 to 1.5% in dry basis, as a dispersant agent.

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