| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f6c6cc668ae0fe4a7aa3d5e506406109
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_677d8a678327198dfbf7d8b81504d63e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_be3c24318b663c7bc98bd0dd2ae231c0
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d97cb8a32e185e2ecb92493382e48baa |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-20 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B3-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B7-006
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B34-24 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B7-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B34-24 |
| filingDate |
1999-10-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c7ed87dc4834f95d2721838a2d27aa25
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a942dd5beb66d7ff5d8891df4cb1f0bf |
| publicationDate |
2000-05-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-0024943-A1 |
| titleOfInvention |
Treating niobium and/or tantalum containing raw materials |
| abstract |
The invention relates to a process for treating tantalum and/or niobium containing raw materials such as wastes, slags, concentrates and ores. The tantalum and/or niobium containing raw materials are processed by repeated use of a solution of ammonium fluoride. From the tantalum and niobium containing aqueous solution a mixture of fluorides and oxide fluorides of tantalum and niobium are transformed into a firm condition. At an extraction stage pure, aqueous solutions containing fluoro acid complexes of niobium and fluoroammonium complexes of tantalum are obtained. From these tantalum and niobium are obtained as oxides in pure form by precipitating them as fluoride containing oxide hydrates by addition of ammonia. The obtained oxide hydrates are transformed into pure oxides by calcining at high temperatures. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-100489125-C
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2006136948-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2006136948-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1484284-A4
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7718147-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1484284-A1 |
| priorityDate |
1998-10-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |