Dry preparation of kaolin in the production of HPA
AssigneeSMS group GmbH
InventorsEmir Mustafi, Joachim Gier-Zucketto, Thorsten Schriewer, Raffael Stastny
Life of this patent
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Abstract
A method for preparing raw kaolin (R) uses a milling and separating device (1) which has a milling section (13) and a first separating section (16). The raw kaolin (R) is a material mixture of at least kaolin as a first fraction (F1) and a second fraction (F2) which includes at least quartz. The raw kaolin (R) is supplied to the milling section (13), in which the first fraction (F1) is at least partly removed from the raw kaolin (R) by a grinding process, and the first fraction (F1) is then separated from the second fraction (F2) in the first separating section (16).
Claims13
A method for preparation of raw kaolin (R), comprising:
- providing a roller milling and separating device (1) which has a milling section (13) and a first separating section (16);
- providing the raw kaolin (R) as a material mixture comprising a first fraction (F1) including kaolin and a second fraction (F2) including quartz;
- feeding the raw kaolin (R) to the milling section (13);
- pulverizing the raw kaolin (R) in the milling section (13) and thereby extracting the first fraction (F1) at least in part from the raw kaolin (R);
- and
- subsequently separating the first fraction (F1) from the second fraction (F2) in the first separating section (16),
- wherein the preparation is carried out without production of a suspension of the raw kaolin (R).
Dependencies are inferred from the claim text.