C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
31/79
C09K 3/00 (2006.01) B01J 2/30 (2006.01) C01D 3/26 (2006.01)
Patent
CA 1057945
PROCESS FOR PREPARING A COMPOSITION USEFUL FOR REDUCING THE CAKING TENDENCY OF A PARTICULATE SODIUM CHLORIDE Abstract of the Disclosure An aqueous solution is prepared by: (a) admixing nitrilotriacetonitrile and aqueous hydrochloric acid to form a first mixture; (b) reacting the nitrilotriacetonitrile and the hydrochloric acid components of the first mixture at 25-70°C to form a second mixture; and (c) adjusting the pH of the second mixture to about 3-7 by admixing the second mixture and sodium hydroxide, potassium hydroxide, or ammonia to form the aqueous solution. Said solution is useful for reducing the caking tendency of particulate sodium chloride. Said solution is also useful as an additive to systems in which potassium chloride is to be separated from sodium chloride by froth flotation. Said solution is also useful as an inhibitor for inhibiting the crystallization of sodium chloride from brines, including brines encountered in oil well operations. - 1 -
248229
Bragdon Robert W.
Thunberg Jon C.
Na
W.r. Grace And Co.
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