http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-101143566-B1
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-20 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G53-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G41-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G51-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B7-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B23-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B34-36 |
| filingDate | 2009-09-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2012-05-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2012-05-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-101143566-B1 |
| titleOfInvention | Recovery of Tungsten and Cobalt from Tungsten Cemented Carbide Sludge by Aqua Water Wet Treatment |
| abstract | The present invention relates to a cemented carbide sludge treatment method comprising putting cemented carbide sludge into aqua regia and separating and recovering tungsten carbide contained in the cemented carbide sludge with tungstic acid. More specifically, a) preparing a mixed solution by adding cemented carbide sludge to aqua regia; b) recovering tungstic acid by stirring and filtering the mixed solution; And c) dissolving the recovered tungstic acid in ammonia water, filtering to remove undissolved impurities, and adding and heating hydrochloric acid to produce high purity tungstic acid. And d) adjusting the pH of the filtrate obtained by the filtration separation in step b) to 5 to 7 to produce cobalt hydroxide and nickel hydroxide, and recovering them.n n n It relates to a cemented carbide sludge treatment method comprising a.n n n In the present invention, in recovering tungsten, cobalt and nickel from cemented carbide sludge, there is an advantage in that high efficiency tungsten, cobalt and nickel can be recovered by a simple wet process without undergoing an energy-consuming oxidation process compared to the conventional invention. More specifically, there is an advantage that the tungsten can be recovered with an efficiency close to 100% by reacting the cemented carbide sludge into aqua regia. In addition, cobalt and nickel can be recovered with high efficiency of more than 98% through a simple process of controlling the pH of the filtrate.n n n n Cemented carbide sludge, aqua regia, tungsten, cobalt, nickel |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-101431706-B1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104386755-A |
| priorityDate | 2009-09-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 51.