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:
Jul. 09, 2013
Filed:
Jun. 29, 2012
Mikko Maijala, Espoo, FI;
Björn Lax, Vasa, FI;
Roope Maijala, Espoo, FI;
Matti Sipilä, Kuusankoski, FI;
Päivi Solismaa, Kuusankoski, FI;
Mikko Maijala, Espoo, FI;
Björn Lax, Vasa, FI;
Roope Maijala, Espoo, FI;
Matti Sipilä, Kuusankoski, FI;
Päivi Solismaa, Kuusankoski, FI;
FP-Pigments Oy, Espoo, FI;
UPM-Kymmene Oyj, Helsinki, FI;
Abstract
A method and apparatus for pretreating fibre material to be used in manufacturing paper or the like, for example, by precipitating mineral substances to the fibres. During precipitation, fibre material, which is advantageously pretreated in a through-flow mixer operating on the principle of an impact mill, is fed to the precipitation reactor. Gas is led to the precipitation reactor in order to generate a gas space in the reactor. The gas contains a substance, which precipitates the mineral substance such as carbon dioxide (CO). The fibre material is fed to the gas space of to the precipitation reactor as small liquid and solid substance fractions such as drops and/or particles.