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. 12, 2022
Filed:
Nov. 22, 2018
Ocp SA, Casablanca, MA;
Driss Dhiba, Casablanca, MA;
Lhoussaine Omari, Safi, MA;
Jamal Chaouki, Quebec, CA;
Ahmad Mohaddespour, Quebec, CA;
Abstract
The present invention relates to a process for decomposing calcium sulfate (CaSO) present in phosphogypsum (PG), comprising the following steps: a) providing a reactor containing phosphogypsum (PG) and a solid source of carbon (C), b) reacting a flow of dioxygen (Oz) with the source of carbon (C) so as to generate carbon oxide (CO), c) reacting carbon oxide (CO) obtained in step a) with calcium sulfate (CaSO) of the phosphogypsum to produce calcium oxide (CaO) and sulfoxide (SO) according to the following reaction: CaSO+CO→CaO+SO+COwherein the mass ratio C/PG is between 0.2 and DA, and the mass ratio 15 O/PG is between 0.5 and 1.5.