http://rdf.ncbi.nlm.nih.gov/pubchem/patent/PL-159674-B1
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25D21-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B7-00 |
| filingDate | 1989-04-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1992-12-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | PL-159674-B1 |
| titleOfInvention | Method of obtaining precious metal concentrates from post-refining waste PL PL PL |
| abstract | A method of obtaining precious metal concentrates from post-refining waste not dissolving in royal water, which consists in accumulating precious metals in metallic lead and then separating them from the carrier, characterized by the fact that the lead alloy containing precious metals is poured into anodes, which is placed in a fluorosilicate electrolyte and subjected to the electrorefining process at an anode current density of 200-600 A / m 2 and a cathode density of 130-300 A / m 2, and in the initial stage of the process an electrolyte containing 30-80 in 1 dm3 is used g of lead, 50-150 g of fluosilicate and 0.5-2.5 g of hydrofluoric acid, while during the electrorefining process every 5-10 hours, hydrofluoric acid is added to the electrolyte in the amount of 0.5-2.5 kg per 1 m3 electrolyte, then the obtained anode sludge with a content of 8-20% by weight of precious metals is further processed using known methods, and the lead sponge produced on the cathode is recycled as a metal collector of sludge to the first phase of the process. PL PL PL |
| priorityDate | 1989-04-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 29.