http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-1291063-C
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8b3b5134cc496333dffec9263b2d58fc |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C25C1-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B11-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C25B1-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G7-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25B1-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25C1-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25C1-00 |
| filingDate | 1986-05-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1991-10-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2923516e1edc5622bd4b08ee20fea162 |
| publicationDate | 1991-10-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-1291063-C |
| titleOfInvention | Method and apparatus for purification of gold |
| abstract | ABSTRACT OF THE DISCLOSURE A method and unitary apparatus purifies solid metallic gold. For that purpose, the gold to be puri-fied is immersed and electrolytically dissolved into a pregnant electrolyte comprising an aqueous solution of a halide ion source impregnated with a catalyst, preferably a peroxide or a nascent oxygen source, for leveling the overvoltage of gold. The dissolved gold ions are segregated from the cathode by a semi-perme-able barrier, the insoluble impurities are separated from the gold-containing liquidus, and then the gold is selectively reduced to metallic form from the liquidus by a selective chemical reducing agent. With this method and apparatus, gold in metallic form of at least 99.95% purity can be obtained. |
| priorityDate | 1985-05-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 65.