PT77115A - Method for production of alumina - Google Patents

Method for production of alumina

Info

Publication number
PT77115A
PT77115A PT7711583A PT7711583A PT77115A PT 77115 A PT77115 A PT 77115A PT 7711583 A PT7711583 A PT 7711583A PT 7711583 A PT7711583 A PT 7711583A PT 77115 A PT77115 A PT 77115A
Authority
PT
Portugal
Prior art keywords
soln
alumina
recycled
lixiviating
maintain
Prior art date
Application number
PT7711583A
Other languages
Portuguese (pt)
Other versions
PT77115B (en
Inventor
Nikolai Stepanovi Shmorgunenko
Vladimir Yakovlevich Abramov
Nikolai Ivanovich Eremin
Vasily Ivanovich Petrov
German Pavlovich Demin
Svetlana Mikhailovna Baevskaya
Boris Ilich Arljuk
Vladimir Vasilievich Borzenko
Pavel Vasilievich Yashunin
Boris Andreevich Polovnikov
Original Assignee
Vni Proek I Alum Elek Promy
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 Vni Proek I Alum Elek Promy filed Critical Vni Proek I Alum Elek Promy
Priority to PT7711583A priority Critical patent/PT77115B/en
Publication of PT77115A publication Critical patent/PT77115A/en
Publication of PT77115B publication Critical patent/PT77115B/en

Links

Classifications

    • 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

  • Compositions Of Oxide Ceramics (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

Alumina is produced by sintering a mixt. of aluminous material, limestone and soda, and lixiviating the prod. with a caustic alkali soln. consisting of a recycled process soln. from which the alumina has been partially separated. The aluminate soln. obtained is de-siliconised and the alumina then separated. The recycled soln. is mixed with water to maintain concns. of 10-50 g/l. Na2O as carbonate, 60-100 g/l, Al2O3, 1-5 g/l SiO2 and 0.5-5 g/l paste from the sintered material, the caustic module varying from 1.35-1.45. The SiO2 content of the recycled soln. is pref. 1.0-2.5 g/l. The sintered product is at 100-1100 deg.C before lixiviating. Part of the recycled soln. is heated after lixiviating, to maintain a discharge temp. in the aluminate soln. between 50 deg. and 90 deg.C.
PT7711583A 1983-07-27 1983-07-27 Method for production of alumina PT77115B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PT7711583A PT77115B (en) 1983-07-27 1983-07-27 Method for production of alumina

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PT7711583A PT77115B (en) 1983-07-27 1983-07-27 Method for production of alumina

Publications (2)

Publication Number Publication Date
PT77115A true PT77115A (en) 1983-08-01
PT77115B PT77115B (en) 1986-01-27

Family

ID=20083345

Family Applications (1)

Application Number Title Priority Date Filing Date
PT7711583A PT77115B (en) 1983-07-27 1983-07-27 Method for production of alumina

Country Status (1)

Country Link
PT (1) PT77115B (en)

Also Published As

Publication number Publication date
PT77115B (en) 1986-01-27

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