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1. WO2020003225 - OPTIMIZED BIOPROCESSING METHOD

Publication Number WO/2020/003225
Publication Date 02.01.2020
International Application No. PCT/IB2019/055495
International Filing Date 28.06.2019
IPC
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
B
PRODUCTION OR REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
3
Extraction of metal compounds from ores or concentrates by wet processes
04
by leaching
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
B
PRODUCTION OR REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
3
Extraction of metal compounds from ores or concentrates by wet processes
04
by leaching
16
in organic solutions
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
B
PRODUCTION OR REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
1
Preliminary treatment of ores or scrap
14
Agglomerating; Briquetting; Binding; Granulating
24
Binding; Briquetting
242
with binders
244
organic
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
B
PRODUCTION OR REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
3
Extraction of metal compounds from ores or concentrates by wet processes
18
with the aid of micro-organisms or enzymes, e.g. bacteria or algae
C22B 3/04 (2006.01)
C22B 3/16 (2006.01)
C22B 1/244 (2006.01)
C22B 3/18 (2006.01)
CPC
C22B 1/244
C22B 3/04
C22B 3/16
C22B 3/18
Applicants
  • MEGAW, Darren Craig [ZA/ZA]; ZA
Inventors
  • MEGAW, Darren Craig; ZA
  • CRUNDWELL, Frank Kenneth; ZA
Agents
  • DE BEER, Deon; ZA
Priority Data
AP/P/2018/01083728.06.2018AP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) OPTIMIZED BIOPROCESSING METHOD
(FR) PROCÉDÉ DE BIOTRAITEMENT OPTIMISÉ
Abstract
(EN)
Disclosed is method of leaching at least one desired element from feed material containing feed material fines, which includes combining such a feed material with a pulping solution comprising a liquid and a solution-hydrated or a solution-soluble polymer to form a treated slurry, with the polymer configured to predominantly capture at least part of the feed material fines prior to their settling out of the liquid slurry matrix, and with the polymer being added to the feed material in a predetermined ratio of polymer to feed material. The treated slurry is deposited in a deposition cell for leaching and further treatment. Also disclosed is a composition of a treated slurry, and treating any one or more of the feed material, the treated slurry or the deposited treated slurry with sulphide consuming bacteria.
(FR)
L'invention concerne un procédé de lixiviation d'au moins un élément souhaité à partir d'un matériau de départ contenant des fines de matériau de départ, qui comprend la combinaison d'un tel matériau de départ avec une solution de réduction en pulpe comprenant un liquide et un polymère hydraté par la solution ou dissous dans la solution pour former une bouillie traitée, le polymère étant conçu pour capturer principalement au moins une partie des fines de matériau de départ avant leur sédimentation hors de la matrice de bouillie liquide et le polymère étant ajouté au matériau de départ en un rapport prédéfini du polymère au matériau de départ. La bouillie traitée est déposée dans une cellule de dépôt pour lixiviation et traitement ultérieur. L'invention concerne également une composition d'une bouillie traitée et le traitement d'au moins un parmi le matériau de départ, la bouillie traitée ou la bouillie traitée déposée avec des bactéries consommant des sulfures.
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