Application Type
Patents
Application SubType
PCT
(10) Registration Number and Date
Status
Filed-Formality Examination
(180) Expiration Date
(20) Filing Number and Date
PG P/2023/000011 2021.07.16
(40) Publication Number and Date
(86) PCT Filing Number and Date
(87) PCT Publication Number and Date
(85) National Entry Date
(30) Priority Details
EP 20186290.1
2020.07.16
(51) IPC Classes
(71/73) Applicant
(72) Inventor
(EN) DU PLESSIS, Chris : c/o S.A. Lhoist Recherche et Développement, Rue Charles Dubois 28, 1348 Ottignies-Louvain-la-Neuve (BE)
(EN) LAMBERT, Hugues : c/o S.A. Lhoist Recherche et Développement, Rue Charles Dubois 28, 1348 Ottignies-Louvain-la-Neuve (BE)
(EN) RABIEH, Alireza : c/o Curtin University, River Way 162D, Salter Point, Western Australia 6152 (AU)
(74) Representative Name
(EN) VAI IP LAWYERS : P.O BOX 27, KONEDOBU, NATIONAL CAPITAL DISTRICT
(54) Title
(EN) ALKALINE OXIDATION PROCESS AND DEVICE FOR TREATING REFRACTORY SULFIDE ORE, IN PARTICULAR REFRACTORY GOLD ORE
(57) Abstract
(EN)
Alkaline oxidation process for treating refractory sulfide ore or concentrate particles enriched in a metal to be recovered comprising stages in which refractory ore or concentrate particles are surface-oxidized in an alkaline oxidation step in alkaline liquid phase with calcium hydroxide forming an alkaline slurry, which slurry is thereafter mechanically activated to remove passivating coatings from the surface oxidized refractory ore particles.
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(58) Citations