GB1446575A - Method of and apparatus for wet screening finely divided solids - Google Patents

Method of and apparatus for wet screening finely divided solids

Info

Publication number
GB1446575A
GB1446575A GB4594673A GB4594673A GB1446575A GB 1446575 A GB1446575 A GB 1446575A GB 4594673 A GB4594673 A GB 4594673A GB 4594673 A GB4594673 A GB 4594673A GB 1446575 A GB1446575 A GB 1446575A
Authority
GB
United Kingdom
Prior art keywords
screen
pulp
wet screening
screening
finely divided
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB4594673A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Murskauskone Oy
Original Assignee
Murskauskone Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Murskauskone Oy filed Critical Murskauskone Oy
Publication of GB1446575A publication Critical patent/GB1446575A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/18—Drum screens
    • B07B1/20—Stationary drums with moving interior agitators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0012—Settling tanks making use of filters, e.g. by floating layers of particulate material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0018—Separation of suspended solid particles from liquids by sedimentation provided with a pump mounted in or on a settling tank
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
    • B01D21/0042—Baffles or guide plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/2405—Feed mechanisms for settling tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/2427—The feed or discharge opening located at a distant position from the side walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/245—Discharge mechanisms for the sediments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/30—Control equipment
    • B01D21/34—Controlling the feed distribution; Controlling the liquid level ; Control of process parameters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2221/00—Applications of separation devices
    • B01D2221/04—Separation devices for treating liquids from earth drilling, mining
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B2230/00—Specific aspects relating to the whole B07B subclass
    • B07B2230/01—Wet separation

Abstract

1446575 Centrifugal separators; wet screening apparatus MURSKAUSKONE OY 2 Oct 1973 45946/73 Headings BID and B2P Apparatus for wet screening finely divided solids in pulp comprises: a stationary vessel 1 having a cylindrical upper. Section 2 and a frusto-conical lower section 3; a cylindrical screen 4 in the upper section 2; a rotor 7 located at the junction of the two sections 2, 3, and in use forming a pulp ring travelling at a constant angular speed in a screening zone near the screen surface; means 9 of introducing a pulp to be screened; means 10 to collect a fine portion which has passed through the screen 4; means 12, 14 to collect a coarse portion which has settled and to return a part of the coarse portion to the screening zone. The rotor 7 may be in the form of a disc or a cone and may have vertical sweeper blades 8. There may be overflow channels 15 which allow an uppermost finest layer of pulp to overflow into the fine portion outlet 10. A mechanism (not shown) may be used to vibrate the screen 4, possibly under the control of a mixture level sensor. The preferred speed of the pulp over the screen is said to be 0.5 to 5 metres/second. An example is given of wet screening cyclone sand at a rate of 13.2 dry metre tons per hour using a screen drum with a slot width of 500 microns.
GB4594673A 1972-10-04 1973-10-02 Method of and apparatus for wet screening finely divided solids Expired GB1446575A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI273372 1972-10-04

Publications (1)

Publication Number Publication Date
GB1446575A true GB1446575A (en) 1976-08-18

Family

ID=8507522

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4594673A Expired GB1446575A (en) 1972-10-04 1973-10-02 Method of and apparatus for wet screening finely divided solids

Country Status (6)

Country Link
JP (1) JPS49100650A (en)
CA (1) CA976112A (en)
DD (1) DD107607A5 (en)
DE (1) DE2349941A1 (en)
GB (1) GB1446575A (en)
SE (1) SE388131B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4923600A (en) * 1987-08-28 1990-05-08 Lenox Institute For Research, Inc. Water clarification system adapted for removing particulate matter of greater than a predetermined size
CN110479673B (en) * 2019-08-17 2020-12-18 温州瓯厦建设有限公司 Contrarotating centrifugal sand cleaning machine
CN112934456A (en) * 2021-01-27 2021-06-11 徐全军 Light material wet process multilayer splitter
CN113484203B (en) * 2021-07-27 2022-11-29 江西安驰新能源科技有限公司 Method for evaluating screening condition of lithium battery negative electrode slurry

Also Published As

Publication number Publication date
SE388131B (en) 1976-09-27
DD107607A5 (en) 1974-08-12
DE2349941A1 (en) 1974-04-11
CA976112A (en) 1975-10-14
JPS49100650A (en) 1974-09-24

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee