| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_20e86820018524751938dac7b2ef3de5
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_79a8f5bb7861bc71233815a5e7695044 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-61
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-20 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G23-053
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09C1-3607
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09C1-24 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G23-053
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09C1-36
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09C1-24 |
| filingDate |
2006-01-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ff64e12ea478b4eef170597d7532bf48 |
| publicationDate |
2006-07-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-2006077203-A1 |
| titleOfInvention |
A process for the production of titanium dioxide using aqueous fluoride |
| abstract |
A process is described for the production of titanium dioxide by the treatment with ammonium fluoride of titanium ores containing iron; the process comprises the following steps : (a) the titanium ore containing iron is reacted with an aqueous NH4F and/or NH4HF2 solution; (b) the aqueous dispersion thus obtained is filtered with consequent separation of a solid residue and an aqueous solution containing titanium salts; (c) the aqueous solution thus obtained is subjected to hydrolysis, the hydrolysis comprising a first stage at pH 7.0-8.5 and a second stage at pH 10.0- 13.0; (d) the aqueous dispersion thus obtained is filtered and the solid residue is subjected to pyrohydrolysis, the pyrohydrolysis comprising a first stage at a maximum temperature of 450 °C and a second stage at a maximum temperature of 1000 °C. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9577278-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8828541-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-101799911-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2013011423-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/IT-TV20100114-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2012017347-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104803414-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2013130036-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104803413-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9680180-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2012017348-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9184460-B2 |
| priorityDate |
2005-01-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |