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:
Jun. 11, 2013
Filed:
Dec. 18, 2009
Michael Missalla, Oberursel, DE;
Pekka Hiltunen, Frankfurt am Main, DE;
Roger Bligh, Lindfield, AU;
Erwin Schmidbauer, Kastl, DE;
Cornelis Klett, Frankfurt am Main, DE;
Guenter Schneider, Lorsch, DE;
Michael Missalla, Oberursel, DE;
Pekka Hiltunen, Frankfurt am Main, DE;
Roger Bligh, Lindfield, AU;
Erwin Schmidbauer, Kastl, DE;
Cornelis Klett, Frankfurt am Main, DE;
Guenter Schneider, Lorsch, DE;
Outotec Oyj, Espoo, FI;
Abstract
A process for producing metal oxide from a metal salt includes supplying a first part of the metal salt to a hydrate drier so as to indirectly heat the first part of the metal salt in the hydrate drier using a heat transfer medium from a first stage of a multi-stage indirect cooler so as to dry the first part of the metal salt in the hydrate drier and so as to control a waste gas temperature of the process. A second part of the metal salt is guided as a partial stream past the hydrate drier. The metal salt is preheated in a first preheating stage and precalcined in a second preheating stage. The metal salt and a fluidizing gas having a temperature of 150° C. or less are supplied to a fluidized bed reactor so as to calcine the metal salt to form a metal oxide product. The metal oxide product is cooled in at least one suspension heat exchanger and then in the multi-stage indirect cooler.