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US 2018/0200731 A1Published application
Foam Prevention In The Reverse Flotation Process For Purifying Calcium Carbonate
AssigneesClariant International Ltd., Clariant GmbH
InventorsStefan DILSKY, Wagner Claudio DA SILVA, Monica SPECK CASSOLA, Nilson Mar BARTALINI, Zaira Guimaraes DUARTE, Jorge Antonio ARIAS MEDINA, Antonio Pedro OLIVEIRA FILHO
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Abstract
This invention relates to an composition, comprising A) at least one quaternary ammonium compound which is a collector for the reverse flotation of magnesium minerals from calcium carbonate B) at least one antifoam agent C) a solvent and its use in the reverse flotation of calcium carbonate.
Claims26
1-26. (canceled)
A process for reversely flotating magnesium silicate minerals from calcium carbonate ore, the process comprising adding a composition comprising
- A) at least one quaternary ammonium compound which is a collector for the reverse flotation of magnesium minerals from calcium carbonate,
- B) at least one antifoam agent, and
- C) at least one solvent to a flotation cell containing magnesium silicate minerals and calcium carbonate ore, subsequently flowing air through the flotation cell and removing the magnesium silicate minerals with the foam so generated.
Dependencies are inferred from the claim text.