JPS5778911A - Settling agent for red mud - Google Patents

Settling agent for red mud

Info

Publication number
JPS5778911A
JPS5778911A JP55155011A JP15501180A JPS5778911A JP S5778911 A JPS5778911 A JP S5778911A JP 55155011 A JP55155011 A JP 55155011A JP 15501180 A JP15501180 A JP 15501180A JP S5778911 A JPS5778911 A JP S5778911A
Authority
JP
Japan
Prior art keywords
red mud
settling agent
acrylamide
sodium acrylate
50mol
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.)
Pending
Application number
JP55155011A
Other languages
Japanese (ja)
Inventor
Kazuo Miyata
Susumu Hario
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.)
Kurita Water Industries Ltd
Original Assignee
Kurita Water Industries Ltd
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 Kurita Water Industries Ltd filed Critical Kurita Water Industries Ltd
Priority to JP55155011A priority Critical patent/JPS5778911A/en
Publication of JPS5778911A publication Critical patent/JPS5778911A/en
Pending 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
    • C01F7/0653—Separation of the insoluble residue, e.g. of red mud characterised by the flocculant added to the slurry

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

PURPOSE:To provide an excellent settling agent for red mud capable of accelerating the settling of red mud in a cleaning thickener, by mixing acrylamide and sodium acrylate at a specified ratio. CONSTITUTION:This settling agent for red mud is a water-soluble polymer containing 5-50mol% acrylamide and 95-50mol% sodium acrylate, and can be obtained by copolymerizing acrylamide with sodium acrylate in an aqueous solution in the presence of a polymerization initiator. As the initiator, ammonium persulfate and sodium disulfite, or 4,4'-azobiscyanovaleric acid, azobisisobutyronitrile and the like can be used, and the polymerization is conducted under the conditions of pH 8-11, an atmosphere of nitrogen gas, and 30-60 deg.C. This settling agent is added to red mud in an amount of about 1-20mg/l directly into a feed well or a transfer piper for the thickener.
JP55155011A 1980-11-04 1980-11-04 Settling agent for red mud Pending JPS5778911A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55155011A JPS5778911A (en) 1980-11-04 1980-11-04 Settling agent for red mud

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55155011A JPS5778911A (en) 1980-11-04 1980-11-04 Settling agent for red mud

Publications (1)

Publication Number Publication Date
JPS5778911A true JPS5778911A (en) 1982-05-17

Family

ID=15596727

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55155011A Pending JPS5778911A (en) 1980-11-04 1980-11-04 Settling agent for red mud

Country Status (1)

Country Link
JP (1) JPS5778911A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0636578A1 (en) * 1993-07-29 1995-02-01 S. N. F. Process for the fluidization of aqueous red mud suspensions during the preparation of alumina by the Bayer process
WO2013161546A1 (en) * 2012-04-26 2013-10-31 昭和電工株式会社 Method for washing goethite-containing red mud

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0636578A1 (en) * 1993-07-29 1995-02-01 S. N. F. Process for the fluidization of aqueous red mud suspensions during the preparation of alumina by the Bayer process
FR2708587A1 (en) * 1993-07-29 1995-02-10 Snf Sa Process for thinning aqueous suspensions of red mud in the manufacture of alumina by the Bayer technique.
US5653946A (en) * 1993-07-29 1997-08-05 S.N.F. Process for fluidifying aqueous suspensions of red muds in the production of alumina by the bayer process
WO2013161546A1 (en) * 2012-04-26 2013-10-31 昭和電工株式会社 Method for washing goethite-containing red mud
US9533891B2 (en) 2012-04-26 2017-01-03 Showa Denko K.K. Washing method of goethite-containing red mud

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