GB1531939A - Method and apparatus for controlled dewaterizing of coal treatment underflow - Google Patents

Method and apparatus for controlled dewaterizing of coal treatment underflow

Info

Publication number
GB1531939A
GB1531939A GB46789/76A GB4678976A GB1531939A GB 1531939 A GB1531939 A GB 1531939A GB 46789/76 A GB46789/76 A GB 46789/76A GB 4678976 A GB4678976 A GB 4678976A GB 1531939 A GB1531939 A GB 1531939A
Authority
GB
United Kingdom
Prior art keywords
solids
thickener
radiation
flocculated solids
dewaterizing
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
GB46789/76A
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.)
American Minechem Corp
Original Assignee
American Minechem Corp
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 American Minechem Corp filed Critical American Minechem Corp
Publication of GB1531939A publication Critical patent/GB1531939A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B01D21/28—Mechanical auxiliary equipment for acceleration of sedimentation, e.g. by vibrators or the like
    • B01D21/283—Settling tanks provided with vibrators
    • 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
    • B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
    • 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
    • B01D21/0045—Plurality of essentially parallel 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
    • B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
    • B01D21/0057—Settling tanks provided with contact surfaces, e.g. baffles, particles with counter-current flow direction of liquid and solid particles
    • 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
    • B01D21/01—Separation of suspended solid particles from liquids by sedimentation using flocculating agents
    • 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
    • B01D21/02—Settling tanks with single outlets for the separated liquid
    • 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
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/245—Discharge mechanisms for the sediments
    • B01D21/2461—Positive-displacement pumps; Screw feeders; Trough conveyors
    • 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
    • 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
    • B01D21/32—Density control of clear liquid or sediment, e.g. optical control ; Control of physical properties
    • 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
    • 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
    • B01D21/302—Active control mechanisms with external energy, e.g. with solenoid valve
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Liquid Carbonaceous Fuels (AREA)
  • Treatment Of Sludge (AREA)
  • Paper (AREA)

Abstract

1531939 Control of flocculation process AMERICAN MINECHEM CORP 10 Nov 1976 [10 Nov 1975] 46789/76 Heading C1C In a process for dewatering an aqueous slurry of fine solid particles comprising adding a flocculant to the slurry and charging the resulting mixture to a thickener to settle flocculated solids from the mixture and separate water, a radiation beam is impinged on the flocculated solids transverse the direction of travel of the solids adjacent solids discharge means from the thickener, the impinged radiation is detected to measure the density of the flocculated solids and produce an electrical signal proportional thereto, and the electrical signal is used to automatically control and regulate the rate of discharge of the flocculated solids from the thickener. The radiation used is preferably gamma radiation.
GB46789/76A 1975-11-10 1976-11-10 Method and apparatus for controlled dewaterizing of coal treatment underflow Expired GB1531939A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US63021475A 1975-11-10 1975-11-10

Publications (1)

Publication Number Publication Date
GB1531939A true GB1531939A (en) 1978-11-15

Family

ID=24526264

Family Applications (1)

Application Number Title Priority Date Filing Date
GB46789/76A Expired GB1531939A (en) 1975-11-10 1976-11-10 Method and apparatus for controlled dewaterizing of coal treatment underflow

Country Status (7)

Country Link
JP (1) JPS5276770A (en)
AU (1) AU502653B2 (en)
CA (1) CA1067628A (en)
DE (1) DE2650458C3 (en)
GB (1) GB1531939A (en)
PL (1) PL108758B1 (en)
ZA (1) ZA766411B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2940270A1 (en) * 2008-12-24 2010-06-25 Degremont RAPID STATIC DECANTER FOR PRE-THICKENING WATER TREATMENT SLUDGE, AND INSTALLATION COMPRISING SUCH DECANTER.
CN112221207A (en) * 2019-12-13 2021-01-15 安徽理工大学 Efficient multistage sedimentation rake-free concentration device
ES2912046A1 (en) * 2020-11-23 2022-05-24 Atca Asesoria Proyectos E Instalaciones S L Flow and sunscreen balancing device for lamellar decanters (Machine-translation by Google Translate, not legally binding)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2940270A1 (en) * 2008-12-24 2010-06-25 Degremont RAPID STATIC DECANTER FOR PRE-THICKENING WATER TREATMENT SLUDGE, AND INSTALLATION COMPRISING SUCH DECANTER.
WO2010073222A1 (en) * 2008-12-24 2010-07-01 Degremont Quick static decanter for prethickening water treatment sludge, and plant including such a decanter
US9011677B2 (en) 2008-12-24 2015-04-21 Degremont Quick static decanter for prethickening water treatment sludge, and plant including such a decanter
CN112221207A (en) * 2019-12-13 2021-01-15 安徽理工大学 Efficient multistage sedimentation rake-free concentration device
ES2912046A1 (en) * 2020-11-23 2022-05-24 Atca Asesoria Proyectos E Instalaciones S L Flow and sunscreen balancing device for lamellar decanters (Machine-translation by Google Translate, not legally binding)

Also Published As

Publication number Publication date
AU502653B2 (en) 1979-08-02
AU1936276A (en) 1978-05-11
PL108758B1 (en) 1980-04-30
DE2650458C3 (en) 1980-10-02
DE2650458B2 (en) 1980-02-07
ZA766411B (en) 1977-10-26
DE2650458A1 (en) 1977-05-18
CA1067628A (en) 1979-12-04
JPS5276770A (en) 1977-06-28
PL193578A1 (en) 1978-03-13

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee