http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2458999-C1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_604a0feab19053b79bed9c1528bc9817 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-20 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B59-00 |
| filingDate | 2011-04-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2012-08-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3d2b147a392ed556bc619ba35fa7887a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cdea65f5f8b446cc9c7eae78f5c4f853 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_09ff0711defb20718acbf1a0d8ef0997 |
| publicationDate | 2012-08-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-2458999-C1 |
| titleOfInvention | Method of phosphogypsum processing for manufacture of concentrate of rare-earth elements and gypsum |
| abstract | FIELD: metallurgy. n SUBSTANCE: method of phosphogypsum processing involves leaching of phosphogypsum with sulphuric acid solution with change-over of phosphorus and rare-earth elements to the solution, and gypsum residues is obtained, rare-earth elements are extracted from the solution and the gypsum residue is neutralised with the main calcium compound. In addition, leaching is performed with sulphuric acid solution with concentration of 1-5 wt %. After that, rare-earth elements are extracted from the solution by sorption using sulfocationite in hydrogen or ammonia form with further desorption of rare-earth elements with ammonia sulphate solution. After desorption to the obtained strippant there added is ammonia or ammonium carbonate with deposition and separation of hydroxide or carbon-bearing concentrate of rare-earth elements. Extraction of rare-earth elements of medium and yttrium groups to concentrates is 41-67% and 28-51.4% respectively. Specific consumption of neutralising calcium compound per 1 kg of phosphogypsum has been reduced at least by 1.6 times. n EFFECT: obtaining high-quality hydroxide or carbonate concentrate of rare-earth elements. n 4 cl, 4 tbl, 4 ex |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2665512-C1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2706401-C1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105779792-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2504593-C1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2525877-C2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2763074-C1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2708718-C1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2520877-C1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2663512-C1 |
| priorityDate | 2011-04-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 69.