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1. WO2020136439 - STAGED FILTRATION FEED SYSTEM AND METHOD

Publication Number WO/2020/136439
Publication Date 02.07.2020
International Application No. PCT/IB2019/001397
International Filing Date 27.12.2019
IPC
C02F 11/122 2019.01
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
11Treatment of sludge; Devices therefor
12by de-watering, drying or thickening
121by mechanical de-watering
122using filter presses
B01D 25/12 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
25Filters formed by clamping together several filtering elements or parts of such elements
12Filter presses, i.e. of the plate or plate and frame type
B01D 25/30 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
25Filters formed by clamping together several filtering elements or parts of such elements
30Feeding devices
C02F 1/00 2006.01
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
C02F 11/128 2019.01
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
11Treatment of sludge; Devices therefor
12by de-watering, drying or thickening
121by mechanical de-watering
128using batch processes
C02F 103/10 2006.01
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
103Nature of the water, waste water, sewage or sludge to be treated
10from quarries or from mining activities
CPC
B01D 25/004
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
25Filters formed by clamping together several filtering elements or parts of such elements
003integrally combined with devices for controlling the filtration
004by clearness or turbidity measuring
B01D 25/005
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
25Filters formed by clamping together several filtering elements or parts of such elements
003integrally combined with devices for controlling the filtration
005by flow measuring
B01D 25/007
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
25Filters formed by clamping together several filtering elements or parts of such elements
003integrally combined with devices for controlling the filtration
007by pressure measuring
B01D 25/12
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
25Filters formed by clamping together several filtering elements or parts of such elements
12Filter presses, i.e. of the plate and frame type
B01D 25/164
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
25Filters formed by clamping together several filtering elements or parts of such elements
16Edge filtering elements, i.e. using contiguous impervious surfaces
164Chamber-plate presses, i.e. the sides of the filtering elements being clamped between two successive filtering plates
B01D 25/30
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
25Filters formed by clamping together several filtering elements or parts of such elements
30Feeding devices ; ; Discharge devices
Applicants
  • METSO SWEDEN AB [SE]/[SE]
Inventors
  • KNORR, Brian
  • ANDERSSON, Andrea
  • HEDLUND, Magnus
Agents
  • KUBORN, Joseph D.
  • HOLSEN, Peter, T.
  • OLEJICZAK, Aaron, T.
  • WILLIAM, Edward, R.
  • IMHOFF, Benjamin, R.
Priority Data
16/234,83928.12.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) STAGED FILTRATION FEED SYSTEM AND METHOD
(FR) SYSTÈME ET PROCÉDÉ D'ALIMENTATION PAR FILTRATION ÉTAGÉE
Abstract
(EN)
The present invention relates to a method for treatment of a slurry comprising a liquid and particles suspended in the liquid. The method comprising the steps of providing a slurry to be treated; subjecting the slurry to a separating stage in which the particles of the slurry are divided into at least two subsets, a first subset (S1) being generally less difficult to dewater than a second subset (S2); feeding a pressure filter (124) with a flow of the first and second subsets, wherein in a first feeding step, a major part of the flow is defined by the first subset and in a subsequent second feeding step, a major part of the flow is defined by the second subset.
(FR)
La présente invention concerne un procédé de traitement d'une bouillie comprenant un liquide et des particules en suspension dans le liquide. Le procédé comprend les étapes consistant à fournir une bouillie à traiter; à soumettre la bouillie à un étage de séparation dans lequel les particules de la suspension sont divisées en au moins deux sous-ensembles, un premier sous-ensemble (S1) étant généralement moins difficile à déshydrater qu'un second sous-ensemble (S2); à alimenter un filtre de pression (124) en un flux des premier et second sous-ensembles, une majeure partie du flux étant définie, dans une première étape d'alimentation, par le premier sous-ensemble et, dans une seconde étape d'alimentation suivante, une majeure partie du flux étant définie par le second sous-ensemble.
Also published as
Latest bibliographic data on file with the International Bureau