BR0009920A - Processo para causticação de soluções alcalinas - Google Patents

Processo para causticação de soluções alcalinas

Info

Publication number
BR0009920A
BR0009920A BR0009920-1A BR0009920A BR0009920A BR 0009920 A BR0009920 A BR 0009920A BR 0009920 A BR0009920 A BR 0009920A BR 0009920 A BR0009920 A BR 0009920A
Authority
BR
Brazil
Prior art keywords
causticizing
alkaline solutions
alkaline solution
reaction mixture
alkaline
Prior art date
Application number
BR0009920-1A
Other languages
English (en)
Other versions
BR0009920B1 (pt
Inventor
Geraldine Charmaine De Witt
Gerald Ian Dunstan Roach
Glenn Reid
Original Assignee
Alcoa Australia
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 Alcoa Australia filed Critical Alcoa Australia
Publication of BR0009920A publication Critical patent/BR0009920A/pt
Publication of BR0009920B1 publication Critical patent/BR0009920B1/pt

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/0064—Aspects concerning the production and the treatment of green and white liquors, e.g. causticizing green liquor
    • D21C11/0078—Treatment of green or white liquors with other means or other compounds than gases, e.g. in order to separate solid compounds such as sodium chloride and carbonate from these liquors; Further treatment of these compounds
    • 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
    • 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
    • C01F7/46—Purification of aluminium oxide, aluminium hydroxide or aluminates
    • C01F7/47—Purification of aluminium oxide, aluminium hydroxide or aluminates of aluminates, e.g. removal of compounds of Si, Fe, Ga or of organic compounds from Bayer process liquors

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Treating Waste Gases (AREA)

Abstract

"PROCESSO PARA CAUSTICAçãO DE SOLUçõES ALCALINAS". Processo para causticação de uma solução alcalina, o processo caracterizado pela etapa de adição de uma quantidade de cal à solução alcalina para produzir uma mistura de reação, de tal modo que a temperatura de reação da mistura de reação assim produzida excede rapidamente o ponto de ebulição atmosférica da solução alcalina.
BRPI0009920-1A 1999-04-23 2000-04-20 processo para causticação de soluções alcalinas. BR0009920B1 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPP9982A AUPP998299A0 (en) 1999-04-23 1999-04-23 Method for causticisation of alkaline solutions
PCT/AU2000/000346 WO2000064812A1 (en) 1999-04-23 2000-04-20 Method for causticisation of alkaline solutions

Publications (2)

Publication Number Publication Date
BR0009920A true BR0009920A (pt) 2002-05-28
BR0009920B1 BR0009920B1 (pt) 2011-05-17

Family

ID=3814183

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0009920-1A BR0009920B1 (pt) 1999-04-23 2000-04-20 processo para causticação de soluções alcalinas.

Country Status (5)

Country Link
EP (1) EP1194376A4 (pt)
AU (1) AUPP998299A0 (pt)
BR (1) BR0009920B1 (pt)
CA (1) CA2370956C (pt)
WO (1) WO2000064812A1 (pt)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPQ889100A0 (en) 2000-07-20 2000-08-10 Worsley Alumina Pty Ltd Improved process for filter aid production in alumina refineries
EP2308856A1 (en) 2009-10-09 2011-04-13 Borealis Agrolinz Melamine GmbH Water recycling in a melamine production process
AU2012203292C8 (en) * 2012-03-07 2013-12-19 South32 Worsley Alumina Pty Ltd High temperature processs for causticisation of a bayer liquor
BR112014021588B1 (pt) * 2012-03-07 2020-10-13 South32 Worsley Alumina Pty Ltd processo de causticação de alta temperatura para a causticação de um licor de processo bayer
WO2019227130A1 (en) * 2018-05-28 2019-12-05 Alcoa Of Australia Limited Method for impurity control
AU2019275940A1 (en) * 2018-05-28 2020-12-10 Alcoa Of Australia Limited Method for controlling the concentration of impurities in bayer liquors
CN111362290A (zh) * 2020-05-05 2020-07-03 湖南诺兰蒂尔环保科技有限公司 一种铝酸钠溶液中碳酸钠苛化工艺及装置
CN115784408B (zh) * 2022-08-31 2023-09-12 哈尔滨工业大学 一种利用改性晶种诱导结晶去除废水中磷、氟和重金属的方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2522605A (en) * 1949-05-13 1950-09-19 Kaiser Aluminium Chem Corp Process for extraction of alumina from aluminous ores
US3210155A (en) * 1962-05-15 1965-10-05 Ormet Corp Process for treating aluminum containing ores
HU187654B (en) * 1982-02-26 1986-02-28 Ajkai Timfoeldgyar Aluminium Process for reduction of damages in production of aluminium oxid of bayer system
US4451443A (en) * 1982-07-28 1984-05-29 Aluminum Company Of America Causticization method
US5145556A (en) * 1991-07-31 1992-09-08 International Paper Company Single-stage slaking and causticizing method

Also Published As

Publication number Publication date
AUPP998299A0 (en) 1999-05-20
CA2370956A1 (en) 2000-11-02
WO2000064812A1 (en) 2000-11-02
EP1194376A4 (en) 2004-04-07
EP1194376A1 (en) 2002-04-10
CA2370956C (en) 2008-12-30
BR0009920B1 (pt) 2011-05-17

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Legal Events

Date Code Title Description
B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 17/05/2011, OBSERVADAS AS CONDICOES LEGAIS.

B21A Patent or certificate of addition expired [chapter 21.1 patent gazette]

Free format text: PATENTE EXTINTA EM 17.05.2021