Classifying – separating – and assorting solids – Electrostatic
Reexamination Certificate
2007-08-06
2009-12-22
Mackey, Patrick H (Department: 3653)
Classifying, separating, and assorting solids
Electrostatic
C209S127400
Reexamination Certificate
active
07635822
ABSTRACT:
The electrostatic separation of ground crude potassium salts containing kieserite is accomplished by mixing the ground crude potassium salt with a conditioning agent containing a combination of an aromatic carboxylic acid or its derivatives, an ammonium salt of an aromatic carboxylic acid, as well as an unbranched fatty alcohol having a chain length of C10to C15, and subsequently triboelectrically charging the mixture at a relative humidity of 1-10%. The mixture is then separated into a crude kieserite fraction and a crude potassium fraction by means of an electrostatic separation method. This method increases kieserite yield and the selectivity of a subsequent treatment by means of flotation.
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Beier Peter-Michael
Deiseroth Florian
Stahl Ingo
Vensky Sascha
Collard & Roe P.C.
K&S Aktiengesellschaft
Mackey Patrick H
Severson Jeremy
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