The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 22, 2012
Filed:
Jul. 27, 2011
Mikko Maijala, Espoo, FI;
Roope Maijala, Espoo, FI;
Bjorn Lax, Vasa, FI;
Jarmo Tolonen, Valkeakoski, FI;
Teuvo Tjurin, Valkeakoski, FI;
Mikko Maijala, Espoo, FI;
Roope Maijala, Espoo, FI;
Bjorn Lax, Vasa, FI;
Jarmo Tolonen, Valkeakoski, FI;
Teuvo Tjurin, Valkeakoski, FI;
FP-Pigments Oy, Espoo, FI;
Abstract
A method and apparatus for producing a calcium carbonate product formed of small <100 μm sized separate calcium carbonate particles. Calcium hydroxide is fed through a disintegration and spraying apparatus (), operating on the principle of a pin mill, into a gas which contains carbon dioxide for precipitating calcium carbonate particles and which is inside a precipitation reactor (). The temperature in the precipitation reactor is maintained at <65° C.