CA976488A - Method for the settling of scale forming suspensions such as those of red mud in alumina manufacture - Google Patents

Method for the settling of scale forming suspensions such as those of red mud in alumina manufacture

Info

Publication number
CA976488A
CA976488A CA092,244A CA92244A CA976488A CA 976488 A CA976488 A CA 976488A CA 92244 A CA92244 A CA 92244A CA 976488 A CA976488 A CA 976488A
Authority
CA
Canada
Prior art keywords
settling
those
red mud
scale forming
forming suspensions
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
CA092,244A
Other languages
English (en)
Other versions
CA92244S (en
Inventor
Keith C. Stansmore
Original Assignee
Dorr Oliver Inc
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 Dorr Oliver Inc filed Critical Dorr Oliver Inc
Application granted granted Critical
Publication of CA976488A publication Critical patent/CA976488A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C01F7/06—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom by treating aluminous minerals or waste-like raw materials with alkali hydroxide, e.g. leaching of bauxite according to the Bayer process
    • C01F7/0646—Separation of the insoluble residue, e.g. of red mud
    • 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
    • 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
    • B01D21/0093—Mechanisms for taking out of action one or more units of a multi-unit settling mechanism
    • 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
    • B01D21/04—Settling tanks with single outlets for the separated liquid with moving scrapers
    • B01D21/06—Settling tanks with single outlets for the separated liquid with moving scrapers with rotating scrapers
    • 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
    • B01D21/18—Construction of the scrapers or the driving 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
    • B01D21/2488—Feed or discharge mechanisms for settling tanks bringing about a partial recirculation of the liquid, e.g. for introducing chemical aids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
CA092,244A 1969-09-17 1970-09-03 Method for the settling of scale forming suspensions such as those of red mud in alumina manufacture Expired CA976488A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US85873169A 1969-09-17 1969-09-17

Publications (1)

Publication Number Publication Date
CA976488A true CA976488A (en) 1975-10-21

Family

ID=25329034

Family Applications (1)

Application Number Title Priority Date Filing Date
CA092,244A Expired CA976488A (en) 1969-09-17 1970-09-03 Method for the settling of scale forming suspensions such as those of red mud in alumina manufacture

Country Status (6)

Country Link
AU (1) AU1975770A (enExample)
CA (1) CA976488A (enExample)
DE (1) DE2045652A1 (enExample)
FR (1) FR2061759B1 (enExample)
GB (1) GB1298976A (enExample)
NL (1) NL7013604A (enExample)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1109426B (it) * 1978-07-31 1985-12-16 Eurallumina Spa Procedimento per lo smaltimento dei residui di lavorazione della bauxite e loro contenimento in bacini di colmata
CN101759214B (zh) * 2008-12-25 2011-12-21 中国铝业股份有限公司 一种铝酸钠浆液过滤分离方法
CN117772762B (zh) * 2023-12-19 2025-02-07 中国石油大学(华东) 大宗工业固废赤泥多相流反应精馏脱碱固碳方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1747759A (en) * 1925-02-11 1930-02-18 Dorr Co Process for the manufacture of sodium aluminate
FR1438659A (fr) * 1970-03-23 1966-05-13 Union Corp Ltd épaississeur perfectionné pour bouillies, limons, boues et matières similaires

Also Published As

Publication number Publication date
DE2045652A1 (de) 1971-05-27
FR2061759A1 (enExample) 1971-06-25
FR2061759B1 (enExample) 1974-10-11
GB1298976A (en) 1972-12-06
AU1975770A (en) 1972-03-16
NL7013604A (enExample) 1971-03-19

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