C - Chemistry – Metallurgy – 01 – D
Patent
C - Chemistry, Metallurgy
01
D
23/172
C01D 3/14 (2006.01) C01D 3/08 (2006.01)
Patent
CA 1195092
PROCESS FOR PRODUCING HIGH PURITY SODIUM CHLORIDE FROM POTASSIUM MINERAL FLOTATION TAILINGS. Abstract of the Disclosure. The invention relates to a process for recovering from potassium mineral flotation tailings sodium chloride of sufficiently high purity to make is suitable for industrial use, characterised by compri- sing the following stages; a) washing said flotation tailings with water and with the mother liquor from one or more successive stages of the process which contains sodium chloride as its base component, to give a mixture of a solid phase comprising nearly all the sodium chloride contained in said fed tailings, and a liquid phase b) separating said mixture into a first turbid portion enriched in said solid phase, and a second turbid portion enriched in said liquid phase c) separating the solid phase from the liquid phase of said first turbid portion, this latter separated phase constituting at least part of said mother liquor for use in stage a), and possibly d) drying the solid phase separated in stage c) to produce high purity sodium chloride.
427735
Sanfilippo Giovanni
Vitellaro Antonio
Italkali Societa Italiana Sali Alcatini S.p.a.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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