http://rdf.ncbi.nlm.nih.gov/pubchem/patent/FR-2746786-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_599e871fdcf6eeff4ac86daea1c8683b |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01F7-0606 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01F7-066 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01D1-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01D1-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B7-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01F7-066 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B26-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01D1-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01F7-0606 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01D1-28 |
| filingDate | 1996-04-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_59eb3ec178598e11c4707803f0576049 |
| publicationDate | 1997-10-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | FR-2746786-A1 |
| titleOfInvention | PROCESS FOR RECOVERING SODIUM CONTAINED IN INDUSTRIAL ALKALINE RESIDUES |
| abstract | The invention relates to a process for recovering, using an ion exchange resin, the sodium contained in industrial alkaline residues and more particularly in "red sludge" and sodium effluents resulting from the manufacture of hydrate. alumina according to the Bayer process. It consists in bringing the alkaline residues (1), generally "red sludge" into contact in the form of an aqueous suspension, with a cationic resin (2) of the RH ** + type, preferably a carboxylic resin, in order to selectively fix and quantitatively the sodium on the resin (5), then to extract it quantitatively in the form of NaOH (8) by displacement with the aid of a suspension of lime (6), preferably milk of lime. The resin (9) having fixed the calcium is then regenerated for reuse at the head of the process (2), by elution of the calcium in the state of CaCl2 (12) with a dilute solution of hydrochloric acid (10). |
| priorityDate | 1996-04-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 62.