Biologically degradable esterquats as flotation aids

Details Biologically degradable esterquats as flotation aids Biologically degradable esterquats as flotation aids

B - Operations, Transporting

03

D

B03D 1/01 (2006.01)

Patent

CA 2244899

The invention concerns the use of so-called quaternary esters as an aid for flotation of non-sulfidic minerals. It was discovered that the products of quaternary esterification of mono, di or trialkanolamine containing aliphatic carboxylic acids present good collector properties on the one hand, especially for the flotation of silicates, and on the other hand an exceptional biodegradability under both aerobic as well as anaerobic conditions.

L'invention concerne l'utilisation de "composés quaternaires d'esters" comme adjuvants pour la flottation de minerais non sulfurés. Il a été découvert que les produits d'estérification quaternarisés des mono, di ou trialcanolamines contenant des acides carboxyliques aliphatiques, dénommés composés quaternaires d'esters, présentent d'une part de bonnes propriétés collectrices, notamment pour la flottation des silicates, et d'autre part, tant en aérobiose qu'en anaérobiose, une remarquable biodégradabilité.

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