| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8ea243bd904a9ca06057ebda0dcd0d38 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D11-0492 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B19-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B3-288
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B3-44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B3-46
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B3-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B19-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D9-0054 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B19-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D9-00 |
| filingDate |
2019-12-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bd47c7732e966391e755c1658b294731
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_201f6ac3947ad9ca8dc75570b51680ae |
| publicationDate |
2020-06-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-2020118455-A1 |
| titleOfInvention |
Process for the recovery of zinc and associated value metals from various materials |
| abstract |
It is disclosed a chemical process for recovery of silver, copper, lead, cadmium, zinc and iron from a zinc and iron bearing feed material including electric arc furnace dust and spent pickle liquor. In the process, a feed solution prepared from the feed material is initially subjected to a series of sequential steps of silver, copper, and lead/cadmium precipitations by addition of metallic copper, iron and zinc to filtrates obtained from each step. A filtrate obtained from the zinc/cadmium precipitation comprises ferrous chloride and zinc chloride. Iron and zinc are recovered from the filtrate by two alternative paths. A first path employs iron oxidation/hydrolysis and zinc hydroxide precipitation to obtain ferric oxide and zinc hydroxide from the filtrate. The second path employs solvent extraction method to form zinc chloride and ferric chloride with quaternary ammine extracts from the filtrate. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111748690-A |
| priorityDate |
2018-12-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |