GB2081123B - Settling and flotation - Google Patents

Settling and flotation

Info

Publication number
GB2081123B
GB2081123B GB8120568A GB8120568A GB2081123B GB 2081123 B GB2081123 B GB 2081123B GB 8120568 A GB8120568 A GB 8120568A GB 8120568 A GB8120568 A GB 8120568A GB 2081123 B GB2081123 B GB 2081123B
Authority
GB
United Kingdom
Prior art keywords
tank
flotation
holes
settling
various sizes
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
GB8120568A
Other versions
GB2081123A (en
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.)
ERPAC
Original Assignee
ERPAC
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 ERPAC filed Critical ERPAC
Publication of GB2081123A publication Critical patent/GB2081123A/en
Application granted granted Critical
Publication of GB2081123B publication Critical patent/GB2081123B/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
    • B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
    • B01D21/0051—Plurality of tube like channels
    • 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
    • B01D21/0087—Settling tanks provided with means for ensuring a special flow pattern, e.g. even inflow or outflow
    • 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
    • B01D21/2405—Feed mechanisms for settling tanks
    • B01D21/2416—Liquid distributors with a plurality of feed points
    • 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
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B11/00—Feed or discharge devices integral with washing or wet-separating equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/14—Flotation machines
    • B03D1/1412—Flotation machines with baffles, e.g. at the wall for redirecting settling solids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/14—Flotation machines
    • B03D1/1443—Feed or discharge mechanisms for flotation tanks
    • B03D1/1456—Feed mechanisms for the slurry
    • 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
    • B01D21/0084—Enhancing liquid-particle separation using the flotation principle
    • 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
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/14—Flotation machines
    • B03D1/1481—Flotation machines with a plurality of parallel plates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biotechnology (AREA)
  • Devices For Dispensing Beverages (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Removal Of Floating Material (AREA)
  • Physical Water Treatments (AREA)
  • Extraction Or Liquid Replacement (AREA)

Abstract

In separating solids from a liquid by settling or flotation, the liquid is made to flow generally horizontally through a tank, and means at the inlet or outlet zone of the tank impose a velocity gradient on the flow. In settling, the velocity increases upwards in the tank (Fig. 3), and in flotation the velocity will decrease upwards to enhance separation. Fig. 3 shows a baffle with holes of various sizes at the inlet, but other embodiments involve equivalent means at the outlet zone, namely a single annular baffle with holes of various sizes (Fig. 6) and arrays of vertical outlet tubes with holes of various sizes (Figs. 4, 5) and internal divisions and overflow weirs (Figs. 7, 8). <IMAGE>
GB8120568A 1980-07-31 1981-07-03 Settling and flotation Expired GB2081123B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8017229A FR2487926B2 (en) 1980-07-31 1980-07-31 IMPROVEMENT IN THE DEVICE ALLOWING THE ESTABLISHMENT OF A DETERMINED LAW OF DISTRIBUTION OF FLOW IN A LIQUID VEIN

Publications (2)

Publication Number Publication Date
GB2081123A GB2081123A (en) 1982-02-17
GB2081123B true GB2081123B (en) 1984-11-14

Family

ID=9244879

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8120568A Expired GB2081123B (en) 1980-07-31 1981-07-03 Settling and flotation

Country Status (5)

Country Link
JP (1) JPS5765326A (en)
DE (1) DE3129887A1 (en)
FR (1) FR2487926B2 (en)
GB (1) GB2081123B (en)
IT (1) IT1138103B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8908382U1 (en) * 1989-07-09 1990-11-08 Söhlbrand, Heinrich, Dr., 8027 Neuried Furnace for heat treatment of semiconductor wafers
FR2713507B1 (en) * 1993-12-09 1996-01-26 Degremont Improvements to decanters.
GB9624867D0 (en) * 1996-11-29 1997-01-15 Kvaerner Paladon Limited Separator

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2559069A (en) * 1949-07-30 1951-07-03 Standard Oil Co Choke for abrasive fluids
US2709128A (en) * 1952-10-09 1955-05-24 Gas Machinery Co Packing or filling element
US3589394A (en) * 1969-03-11 1971-06-29 Deggendorfer Werft Eisenbau Device for distributing flow media over several passage openings
FR2280817A1 (en) * 1974-07-31 1976-02-27 Verbiese PROCESS AND DEVICE FOR ESTABLISHING A LAW OF PREDETERMINED DISTRIBUTION OF THE FLOW IN A FLUID VEIN

Also Published As

Publication number Publication date
DE3129887C2 (en) 1989-01-12
JPS5765326A (en) 1982-04-20
FR2487926A2 (en) 1982-02-05
IT1138103B (en) 1986-09-17
FR2487926B2 (en) 1986-04-25
GB2081123A (en) 1982-02-17
DE3129887A1 (en) 1982-06-16
IT8123141A0 (en) 1981-07-24

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee