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:
Oct. 07, 2014
Filed:
Sep. 10, 2012
Olavi Imppola, Hyvinkaa, FI;
Esko Kukkamaki, Kangasala, FI;
Jouni Matula, Savonlinna, FI;
Paivi Solismaa, Lappeenranta, FI;
Olavi Imppola, Hyvinkaa, FI;
Esko Kukkamaki, Kangasala, FI;
Jouni Matula, Savonlinna, FI;
Paivi Solismaa, Lappeenranta, FI;
Wetend Technologies Oy, Savonlinna, FI;
UPM-Kymmene Corporation, Helsinki, FI;
Abstract
A method for production of calcium carbonate in a target suspension of a fibrous web forming process of a fibrous web machine, wherein the calcium carbonate is produced in a reactor, the method includes: injecting a chemical including carbon dioxide or lime milk through an injection mixer to the target suspension flowing through the reactor; allowing the chemical including to react while in the target suspension to form calcium carbonate crystals, and inhibiting precipitation of the chemical or a reaction product of the chemical on a surface of or in the reactor by application of an electric or magnetic field to or proximate to the surface along a region of the surface adjacent to the reaction involving the chemical.