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:
Dec. 16, 2014
Filed:
Oct. 01, 2010
Osamu Nakai, Tokyo, JP;
Toru Kitazaki, Tokyo, JP;
Shinichi Heguri, Tokyo, JP;
Yoshitomo Ozaki, Tokyo, JP;
Keisuke Shibayama, Tokyo, JP;
Osamu Nakai, Tokyo, JP;
Toru Kitazaki, Tokyo, JP;
Shinichi Heguri, Tokyo, JP;
Yoshitomo Ozaki, Tokyo, JP;
Keisuke Shibayama, Tokyo, JP;
Sumitomo Metal Mining Co., Ltd., Tokyo, JP;
Abstract
A hydrometallurgical plant for nickel laterite ore extraction having a plurality of treatment facility lines wherein the plant is capable of minimizing a decrease in throughput when line failure occurs and efficiently restoring normal operation status Each line of the treatment facility includes a pretreatment step, a leaching step, a solid-liquid separation step, a neutralization step, a zinc removal step, a sulfurization step and a detoxification step. The lines are coupled by pipelines, each having a valve, installed after the solid-liquid separation step for sending a liquid from the solid-liquid separation step to the neutralization step in each line and/or after the sulfurization step for sending a liquid from the sulfurization step to the detoxification step in each line.