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. 21, 2015
Filed:
May. 31, 2011
Leena Lehtinen, Pori, FI;
Marko Lahtinen, Espoo, FI;
Bror Nyman, Vanha-Ulvila, FI;
Timo Haakana, Pori, FI;
Jari Tiihonen, Pori, FI;
Leena Lehtinen, Pori, FI;
Marko Lahtinen, Espoo, FI;
Bror Nyman, Vanha-Ulvila, FI;
Timo Haakana, Pori, FI;
Jari Tiihonen, Pori, FI;
OUTOTEC OYJ, Espoo, FI;
Abstract
A method and apparatus for converting an iron-bearing residue generated in a hydrometallurgical process that contains small amounts of soluble heavy metals into a stable form by means of a neutralizing agent. The residue is elutriated and the elutriated residue is fed into at least one stabilization or homogenization reactor, into which a neutralizing agent is also routed, and the homogenous mixing together of the residue and neutralizing agent takes place by means of a helix mixer, where the ratio of the diameter of the mixer to the diameter of the reactor is 0.75-0.99.