http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-2902467-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e31a7bcbf6b7edcaf10cca6f5400387f |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-20 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B13-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B13-00 |
| filingDate | 1979-01-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4d2f5713684e9c637fe91deccb40b92d |
| publicationDate | 1980-07-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-2902467-A1 |
| titleOfInvention | METHOD FOR OBTAINING LEAD FROM A SULFURED LEAD SOURCE |
| abstract | The source is halogenated at elevated temp to form lead halide, and the product is washed prior to leaching with briner. The soln. is filtered to separate elemental sulphur and solid residue and is then treated with a reducing agent followed by filtration. The soln. is next treated with an oxidising agent and again filtered before being processed to recover lead. Pref. the reducing agent is lead sust, sodium sulphide or hydrogen sulphide and the oxidising agent is chlorine, hydrogen peroxide or air. Lead may be recovered by crystallising the halide from soln. followed by electrolysis in a fused salt bath, particularly NaCl-PbCl2. The process yields lead of purity higher than previously available by a process which eliminates the environmental pollution problems associated with pyrometallurgical processes. |
| priorityDate | 1979-01-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 96.