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:
Mar. 20, 2018
Filed:
May. 08, 2014
Kinotech Solar Energy Corporation, Tokyo, JP;
Masaaki Iosaki, Chiba, JP;
Shuji Mori, Kanagawa, JP;
Kinotech Solar Energy Corporation, Tokyo, JP;
Abstract
A zinc production method includes a reaction step such as a leaching step () of bringing electric arc furnace dust () containing zinc oxide or the like into contact with a chlorine gas () to obtain a zinc oxide component in the electric arc furnace dust () or the like as crude zinc chloride (), a purification step () of heating the crude zinc chloride () obtained at the reaction step to produce zinc chloride vapor, and cooling and condensing the zinc chloride vapor, thereby obtaining purified zinc chloride (), and an electrolysis step () of electrolyzing the purified zinc chloride () obtained at the purification step () in a molten state to obtain a zinc melt () and the chlorine gas ().