| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_eb1362a7d5e0b9f6aad0e415596b7b04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_114e4423ec77cbc8dab9d0a98909704e |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-20 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B23-021
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B23-005
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B23-0446 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B23-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B23-00 |
| filingDate |
2002-12-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate |
2004-07-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-2004055225-A1 |
| titleOfInvention |
A process for extraction of nickel from low grade chromite ore |
| abstract |
The present invention is a process for the extraction of nickel from low-grade chromite ore containing 0.6 to 0.9 % nickel, said process comprises of crushing, drying and grinding of low grade Chromite Ore to obtain +100 to -400 mesh B.S.S. with 85% -200 mesh B.S.S., subjecting the crushed ore to reduction-roasting with or without pre-mixing of oil, leaching the reduced material in an ammonia-ammonium carbonate solution using oxygen or compressed air at elevated pressure of 0.2 to 1.5 kgs/cm2, precipitating the dissolved nickel as basic nickel carbonate and co-precipitating cobalt and recovering ammonia as well as carbon dioxide for recycle and obtaining a magnetic fraction through a wet magnetic separation technique which is suitable for use in low phosphorous iron production. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8388729-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-101775507-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2009009825-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-101798113-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102146524-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/FR-2852969-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102154564-A |
| priorityDate |
2002-12-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |