Slaked lime, process for its production, and its use

Details Slaked lime, process for its production, and its use Slaked lime, process for its production, and its use

C - Chemistry, Metallurgy

04

B

23/283

C04B 2/04 (2006.01) C01F 5/22 (2006.01) C01F 11/02 (2006.01) C04B 2/06 (2006.01)

Patent

CA 1208884

ABSTRACT Slaked lime (calcium hydroxide) obtained by a process comprising contacting quicklime (calcium oxide) with an aqueous solution containing at least one anion selected from the group consisting of Cl, Br and NO3 ions in a concentration of about 0.1 to about 5 mole/liter at a temperature of about 10°C to about 65°C. Magnesium hydroxide can be produced by reacting the aforesaid slaked lime with magnesium chloride or magnesium nitrate in an aqueous medium, the amount of slaked lime being about 0.5 to about 0.95 equivalent per equivalent of the magnesium compound, and thereafter heat-treating the reaction product in an aqueous medium at a temperature of about 150°C to about 250°C.

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