| 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/B01D11-0288 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B3-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B3-44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B34-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B34-1259
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B34-1204
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D9-0031
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D9-0036
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D9-0054
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G49-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G31-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B34-1245
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G23-0536 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B34-12 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G23-047
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G31-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B7-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D11-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G49-00 |
| filingDate |
2020-10-15-04:00^^<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 |
2021-04-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-2021072534-A1 |
| titleOfInvention |
Process for the recovery of titanium dioxide, vanadium and iron compounds from various materials |
| abstract |
A process for the recovery of titanium dioxide from various feedstocks comprising titanium, vanadium and iron compounds is disclosed. The process comprises: leaching the feed material with a first HCl solution (e.g. 20% by weight or more), to obtain a first leachate comprising iron compounds and a magnetic concentrate comprising titanium dioxide; leaching the magnetic concentrate comprising titanium dioxide with a second HCl solution (e.g. 20% by weigh or more), in the presence of a reductant, to obtain a second leachate comprising soluble titanium and a solid residue; removing the solid residue; and hydrolysing the second leachate in presence of an oxidant to obtain pure titanium dioxide and HCl solution. The process also allows recovering the vanadium that is almost always associated with titanium, while ensuring reducing conditions without the necessity to add large quantities of reductant to account for the reduction of ferric iron to ferrous. |
| priorityDate |
2019-10-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |