GB721995A - Method and device for maintaining solids in suspension in a liquid - Google Patents

Method and device for maintaining solids in suspension in a liquid

Info

Publication number
GB721995A
GB721995A GB26161/50A GB2616150A GB721995A GB 721995 A GB721995 A GB 721995A GB 26161/50 A GB26161/50 A GB 26161/50A GB 2616150 A GB2616150 A GB 2616150A GB 721995 A GB721995 A GB 721995A
Authority
GB
United Kingdom
Prior art keywords
suspension
liquid
particles
holes
ring
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
GB26161/50A
Inventor
Andre Sable
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.)
Societe dElectro Chimie dElectro Metallurgie et des Acieries Electriques Dugine SA SECEMAU
Original Assignee
Societe dElectro Chimie dElectro Metallurgie et des Acieries Electriques Dugine SA SECEMAU
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 Societe dElectro Chimie dElectro Metallurgie et des Acieries Electriques Dugine SA SECEMAU filed Critical Societe dElectro Chimie dElectro Metallurgie et des Acieries Electriques Dugine SA SECEMAU
Publication of GB721995A publication Critical patent/GB721995A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/24—Stationary reactors without moving elements inside
    • B01J19/2415—Tubular reactors
    • B01J19/2435—Loop-type reactors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/40—Mixers using gas or liquid agitation, e.g. with air supply tubes
    • B01F33/405—Mixers using gas or liquid agitation, e.g. with air supply tubes in receptacles having guiding conduits therein, e.g. for feeding the gas to the bottom of the receptacle
    • B01F33/4051—Mixers using gas or liquid agitation, e.g. with air supply tubes in receptacles having guiding conduits therein, e.g. for feeding the gas to the bottom of the receptacle with vertical conduits through which the material is being moved upwardly driven by the fluid
    • B01F33/40511—Mixers using gas or liquid agitation, e.g. with air supply tubes in receptacles having guiding conduits therein, e.g. for feeding the gas to the bottom of the receptacle with vertical conduits through which the material is being moved upwardly driven by the fluid with a central conduit or a central set of conduits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/40—Mixers using gas or liquid agitation, e.g. with air supply tubes
    • B01F33/409—Parts, e.g. diffusion elements; Accessories
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
    • C01F7/14—Aluminium oxide or hydroxide from alkali metal aluminates
    • C01F7/144—Aluminium oxide or hydroxide from alkali metal aluminates from aqueous aluminate solutions by precipitation due to cooling, e.g. as part of the Bayer process
    • C01F7/147—Apparatus for precipitation
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/02—Apparatus therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Colloid Chemistry (AREA)

Abstract

In maintaining solid particles in suspension in a liquid capable of growing such particles, the process being particularly applicable to the production of alumina by the Bayer process, the particles formed are allowed to settle to the <PICT:0721995/III/1> bottom of a vessel 1 at a speed determined by their size, wherefrom they are caused to rise as a gasified suspension through pipe 4 arranged at an adjustable depth over a compressed air inlet valve 2, which suspension is distributed at the surface of the liquid by a blade wheel 7 carried by an open work support 6 at the top of pipe 4. The suspension passes through holes 11 into an annular chamber formed by ring 9, clear liquid being discharged over weir 14, heavier particles returning to vessel 1 through holes 10, and lighter particles with attached air bubbles being carried to the upper part of the liquid through holes 12. In normal operation, the level of the liquid in ring 9 is higher than that in the main vessel. When it is desired to withdraw the suspension, a ring 23, communicating with tubes 20, 24 connected by a rubber sleeve or hinge 21, is lowered over the blade wheel 7. Specification 653,741 is referred to.
GB26161/50A 1948-08-07 1950-10-26 Method and device for maintaining solids in suspension in a liquid Expired GB721995A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1010386T 1948-08-07

Publications (1)

Publication Number Publication Date
GB721995A true GB721995A (en) 1955-01-19

Family

ID=9568954

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26161/50A Expired GB721995A (en) 1948-08-07 1950-10-26 Method and device for maintaining solids in suspension in a liquid

Country Status (4)

Country Link
US (1) US2678873A (en)
DE (1) DE823602C (en)
FR (1) FR1010386A (en)
GB (1) GB721995A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1093274B (en) * 1953-11-14 1960-11-17 Giosue Calamai Pressurized gas stirrer for wool u. Like. Melts to be applied
US2914005A (en) * 1956-09-27 1959-11-24 Gorozpe Raul Donde Apparatus for preparing a quick-cooking rice product from broken rice
US3992300A (en) * 1972-09-27 1976-11-16 Trw Inc. Apparatus for controlling iron content of a zinc phosphating bath
US4132643A (en) * 1975-07-29 1979-01-02 Hellqvist Ake O V Sludge and slime separating and settling device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US994679A (en) * 1910-08-06 1911-06-06 Philip M Mchugh Air-lift for agitators for ore or other materials.
US1434232A (en) * 1921-04-18 1922-10-31 George T Hanson Method of mixing
US1646019A (en) * 1925-07-29 1927-10-18 Forrester David Lawton Flotation method and apparatus
US2297586A (en) * 1940-07-03 1942-09-29 Bethlehem Steel Corp Aerating machine

Also Published As

Publication number Publication date
US2678873A (en) 1954-05-18
FR1010386A (en) 1952-06-10
DE823602C (en) 1951-12-06

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