http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0891298-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/C01F7-066 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01D1-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01D1-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01F7-0606 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B26-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01D1-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B7-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01D1-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01F7-066 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01F7-0606 |
| filingDate | 1997-03-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_70ab100b3bfce1036d36bdab0003cfbd |
| publicationDate | 1999-01-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0891298-A1 |
| titleOfInvention | Method for recovering sodium from alkaline industrial waste |
| abstract | A method using an ion exchange resin for recovering sodium from alkaline industrial waste, particularly 'red sludge' and sodium-containing effluents from the manufacture of alumina hydrate according to the Bayer process, is disclosed. According to the method, an aqueous suspension of the alkaline waste (1), generally the 'red sludge', is contacted with an RH<+> cationic resin (2), preferably carboxylic resin, for selectively and quantitatively binding the sodium to the resin (5), then the sodium is quantitatively removed in the form of NaOH (8) by displacement using a lime suspension (6), preferably milk-of-lime. The resin (9) to which the calcium is bound is then regenerated for reuse at the start of the process (2) by elution of the calcium in the form of CaCl2 (12) using a dilute hydrochloric acid solution (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: 56.