http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-2314123-C
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_36711cada45a8c9d15771183f0914318 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-20 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B21-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01F7-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01F7-50 |
| filingDate | 1997-12-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2006-06-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b85008ca9ac72e919d070e182c8f142d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_994557e4d86cffe1e768f66e7bc14347 |
| publicationDate | 2006-06-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-2314123-C |
| titleOfInvention | Method of treating spent potliner material from aluminum reduction cells |
| abstract | A process for treating spent potliner material from aluminum reduction cells and recovering useful products. In the process, spent potlin er material is introduced into an acid digester containing, for example, sulfur ic acid. A gas component is produced which includes hydrogen fluoride and hydrog en cyanide. A slurry component is produced which includes carbon, silica, alumina, sodium compounds such as sodium sulfate, aluminum compounds such as aluminum sulfate, iron compounds such as iron sulfate, magnesium and calcium compounds such as magnesium and calcium sulfate. The slurry component remains in the digester after the gas component is removed. The gas component is recovered and heated an effective amount to convert or decompose the hydrogen cyanide to a remaining gas component including CO2, H2O, and nitrogen oxides, as well as HF gas. The remaining gas component is directed through a water scrubber in which the HF gas is converted to liquid hydrofluoric acid. The hydrofluoric acid is then admixed with alumina trihydrate to form aluminum fluoride and water. Valuable refractory materials and salts are recovered also. |
| priorityDate | 1997-12-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 98.