BR0009920B1 - process for alkaline solution caustics. - Google Patents
process for alkaline solution caustics.Info
- Publication number
- BR0009920B1 BR0009920B1 BRPI0009920-1A BR0009920A BR0009920B1 BR 0009920 B1 BR0009920 B1 BR 0009920B1 BR 0009920 A BR0009920 A BR 0009920A BR 0009920 B1 BR0009920 B1 BR 0009920B1
- Authority
- BR
- Brazil
- Prior art keywords
- caustics
- alkaline solution
- alkaline
- solution
- solution caustics
- Prior art date
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
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 BR0009920A (en) | 2002-05-28 |
BR0009920B1 true BR0009920B1 (en) | 2011-05-17 |
Family
ID=3814183
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BRPI0009920-1A BR0009920B1 (en) | 1999-04-23 | 2000-04-20 | process for alkaline solution caustics. |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1194376A4 (en) |
AU (1) | AUPP998299A0 (en) |
BR (1) | BR0009920B1 (en) |
CA (1) | CA2370956C (en) |
WO (1) | WO2000064812A1 (en) |
Families Citing this family (8)
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 (en) * | 2012-03-07 | 2020-10-13 | South32 Worsley Alumina Pty Ltd | high temperature etching process for etching a bayer process liquor |
CN112203982A (en) * | 2018-05-28 | 2021-01-08 | 美铝澳大利亚有限公司 | Method for controlling impurity concentration in Bayer process liquor |
AU2019275942A1 (en) * | 2018-05-28 | 2020-12-10 | Alcoa Of Australia Limited | Method for impurity control |
CN111362290A (en) * | 2020-05-05 | 2020-07-03 | 湖南诺兰蒂尔环保科技有限公司 | Causticizing process and device for sodium carbonate in sodium aluminate solution |
CN115784408B (en) * | 2022-08-31 | 2023-09-12 | 哈尔滨工业大学 | Method for removing phosphorus, fluorine and heavy metals in wastewater by utilizing modified seed crystal induced crystallization |
Family Cites Families (5)
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 |
-
1999
- 1999-04-23 AU AUPP9982A patent/AUPP998299A0/en not_active Abandoned
-
2000
- 2000-04-20 CA CA002370956A patent/CA2370956C/en not_active Expired - Fee Related
- 2000-04-20 WO PCT/AU2000/000346 patent/WO2000064812A1/en active Application Filing
- 2000-04-20 BR BRPI0009920-1A patent/BR0009920B1/en not_active IP Right Cessation
- 2000-04-20 EP EP00918583A patent/EP1194376A4/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
CA2370956C (en) | 2008-12-30 |
EP1194376A4 (en) | 2004-04-07 |
CA2370956A1 (en) | 2000-11-02 |
WO2000064812A1 (en) | 2000-11-02 |
BR0009920A (en) | 2002-05-28 |
EP1194376A1 (en) | 2002-04-10 |
AUPP998299A0 (en) | 1999-05-20 |
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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 |