C - Chemistry – Metallurgy – 01 – D
Patent
C - Chemistry, Metallurgy
01
D
23/170
C01D 3/04 (2006.01) C01D 3/08 (2006.01)
Patent
CA 1129176
ABSTRACT OF THE DISCLOSURE: An improved process of recovering potassium chloride, from sylvinite or sylvinitelike starting materials, wherein the starting materials are leached with hot mother liquor from a crystallizing stage, the residue consisting substantially of sodium chloride is separated, and the solution is cooled to crystallize potassium chloride. According to the invention, (a) the coarsely ground starting materials are finely ground; (b) the finely ground starting materials are pulped at ambient temperatures with a solution which is saturated with sodium chloride and potassium chloride, and water-soluble impurities are separated with the solution; (c) the solution is separated from the water-insoluble impurities and is recycled at least in part to produce the pulp in step (b); (d) the moist salt mass which has been obtained in step b) and consists substantially of potassium chloride and sodium chloride and from which water- insoluble impurities have been removed to a high degree is contacted with a solution which comes from the crystallizing stage and is saturated with sodium chloride and potassium chloride, the contacting step being carried out so that a suspension at a temperature of at least 95°C is obtained, (e) the solution which has been enriched with potassium chloride is separated from the residue, which contains mainly sodium chloride, and the separated solution is virtually saturated with potassium chloride by an addition of potassium chloride; and (f) the solution obtained in step(e) is crystallized.
319675
Ertl Dietrich
Ueberle Dieter
Metallgesellschaft Aktiengesellschaft
Robic Robic & Associes/associates
LandOfFree
Process of recovering potassium chloride does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process of recovering potassium chloride, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process of recovering potassium chloride will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-287461