B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 9/00 (2006.01) C01D 3/14 (2006.01) C01D 3/16 (2006.01) C01D 3/24 (2006.01) C01D 3/26 (2006.01)
Patent
CA 2495543
The invention relates to an evaporative crystallisation process to make salt compositions which includes a step wherein a mother liquor containing an effective amount of a crystal growth comprising at least one saccharide or saccharide derivative is formed, to form high-purity salt. The salt can be washed with a reduced amount of washing water while still containing lower amounts of K, Br, SO4 and/or Ca. The high-purity salt can be obtained after drying of the salt crystals formed. A wet salt can be obtained by partially drying said salt crystals.
L'invention concerne un procédé de cristallisation par évaporation permettant l'obtention de compositions de sel, comprenant une étape dans laquelle est formée une liqueur mère contenant une quantité efficace d'un inhibiteur de croissance de cristaux renfermant au moins un saccharide ou un dérivé saccharidique, pour former un sel très pur. Le sel peut être lavé à l'aide d'une faible quantité d'eau de lavage tout en contenant encore de faibles quantités de K, Br, SO¿4? et/ou Ca. Le sel très pur peut être obtenu après séchage des cristaux de sel formés. Un sel humide peut être obtenu par séchage partiel desdits cristaux de sel.
Demmer Rene Lodewijk Maria
Geertman Robert Michael
Mayer Mateo Jozef Jacques
Akzo Nobel Nv
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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