| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_193f022e4fd03f24446804e08d3bd988 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C21C7-0087
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C21C5-34 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B22D11-116
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B22D11-117
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C21C7-0075
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C21C7-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C21C7-0645 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C21C5-34 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C21C7-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B22D11-117
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B22D1-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B22D11-116
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C21C7-076
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C21C7-072
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C21C7-064
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C21C7-06 |
| filingDate |
2002-04-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9eb0d80c781b04a0655baaff52c81144
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e3b374255aa5da47bda5315ad3738b04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5e108ae232531fea4f79e886b3c37260
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_684b5caa3994e747758e719dfe65d5f5 |
| publicationDate |
2002-10-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-2441839-A1 |
| titleOfInvention |
Ladle refining of steel |
| abstract |
A steel charge and slag forming material is heated in a ladle to form molten steel covered by a slag containing silicon, manganese and calcium oxides. Th e steel is stirred by injection of an inert gas such as argon or nitrogen to cause silicon/manganese deoxidation and desulphurization to produce a silicon/manganese killed molten steel. Stirring of the molten steel by the inert gas injection while in contact with slag high in calcium oxide generat es low free oxygen levels in the steel and desulphurization to sulphur levels below 0.009%. The slag may subsequently be thickened by lime addition to prevent reversion of sulphur back into the steel and oxygen may be injected into the steel to increase its free oxygen content to produce a steel that i s readily castable in a twin roll caster. |
| priorityDate |
2001-04-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |