FR2342944B1 - - Google Patents
Info
- Publication number
- FR2342944B1 FR2342944B1 FR7608541A FR7608541A FR2342944B1 FR 2342944 B1 FR2342944 B1 FR 2342944B1 FR 7608541 A FR7608541 A FR 7608541A FR 7608541 A FR7608541 A FR 7608541A FR 2342944 B1 FR2342944 B1 FR 2342944B1
- Authority
- FR
- France
- 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
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
- D21C11/0085—Introduction of auxiliary substances into the regenerating system in order to improve the performance of certain steps of the latter, the presence of these substances being confined to the regeneration cycle
- D21C11/0092—Substances modifying the evaporation, combustion, or thermal decomposition processes of black liquor
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D5/00—Sulfates or sulfites of sodium, potassium or alkali metals in general
- C01D5/14—Preparation of sulfites
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D7/00—Carbonates of sodium, potassium or alkali metals in general
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/26—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof
- C02F2103/28—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof from the paper or cellulose industry
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/663,612 US4035228A (en) | 1976-03-03 | 1976-03-03 | Recovery process and apparatus for alkali metal-containing waste liquor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2342944A1 FR2342944A1 (fr) | 1977-09-30 |
| FR2342944B1 true FR2342944B1 (US07709020-20100504-C00041.png) | 1980-04-30 |
Family
ID=24662574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7608541A Granted FR2342944A1 (fr) | 1976-03-03 | 1976-03-24 | Procede et appareil de recuperation continue des metaux alcalins des solutions usees qui en contiennent |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US4035228A (US07709020-20100504-C00041.png) |
| FI (1) | FI770698A (US07709020-20100504-C00041.png) |
| FR (1) | FR2342944A1 (US07709020-20100504-C00041.png) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4154643A (en) * | 1978-02-06 | 1979-05-15 | Sonoco Products Company | Recovery process and apparatus for alkali metal-containing spent liquor |
| DE4135720C2 (de) * | 1991-10-30 | 1994-09-22 | Metallgesellschaft Ag | Verfahren zur Spaltung von Natriumsulfat oder Kaliumsulfat enthaltenden Stoffen |
| US20040188356A1 (en) * | 2003-03-24 | 2004-09-30 | Haydock Intellectual Properties, L.L.C. | System for producing large particle precipitates |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE492244C (de) * | 1925-04-25 | 1930-02-22 | Metallurg De Corphalie Sa | Verfahren zur Herstellung reiner Tonerde durch Saettigung einer Alkalialuminatloesung mit Schwefligsaeuregas |
| US2141132A (en) * | 1936-06-11 | 1938-12-20 | Cowles Detergent Company | Process of treating siliceous materials |
| US2356626A (en) * | 1939-03-22 | 1944-08-22 | Seailles Jean Charles | Method for dissolving raw aluminates of lime in water and recovering alumina from such solutions |
| FR976555A (fr) * | 1942-04-20 | 1951-03-20 | Francais Ciments | Procédé de précipitation de l'alumine dans les solutions d'aluminate de soude diluées |
| BE450280A (US07709020-20100504-C00041.png) * | 1942-05-23 | |||
| US2574008A (en) * | 1946-12-30 | 1951-11-06 | Pechiney Prod Chimiques Sa | Method of extracting gallium oxide from aluminous substances |
| US3652208A (en) * | 1970-05-04 | 1972-03-28 | Trw Inc | Alumina extraction from alumino-silicate ores and potassium sulfate ores |
| US3787283A (en) * | 1972-03-28 | 1974-01-22 | Sonoco Products Co | Treatment of waste liquor from pulp production |
-
1976
- 1976-03-03 US US05/663,612 patent/US4035228A/en not_active Expired - Lifetime
- 1976-03-24 FR FR7608541A patent/FR2342944A1/fr active Granted
-
1977
- 1977-03-04 FI FI770698A patent/FI770698A/fi not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| US4035228A (en) | 1977-07-12 |
| FR2342944A1 (fr) | 1977-09-30 |
| FI770698A (US07709020-20100504-C00041.png) | 1977-09-04 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |