http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109402392-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-20 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B19-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B11-042 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B7-007 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B19-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B11-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B7-00 |
| filingDate | 2018-09-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-05-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-05-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109402392-B |
| titleOfInvention | Method for extracting tellurium from copper anode slime |
| abstract | The invention belongs to the technical field of non-ferrous metal hydrometallurgy, and particularly relates to a method for extracting tellurium from copper anode slime. The method of the invention enables the tellurium in the complex solution to be retained in the solution through selective reduction, and then the tellurium in the solution is recovered in a reduction method. The advantages and the positive effects of the invention are as follows: the method for extracting tellurium from anode slime provided by the invention takes calcine produced by sulfating roasting of copper anode slime as a raw material, and after copper and part of silver are separated by leaching with low-concentration sulfuric acid, tellurium is enriched in copper separation slag; and then, directly and respectively recovering gold, platinum, palladium and tellurium from the copper separation slag chlorination leaching solution. The technical problem of separating tellurium from noble metal in a complex multi-metal solution containing high-concentration tellurium is solved, the tellurium is reserved in the solution in the process of sequentially and preferentially reducing gold, platinum and palladium, and then the tellurium in the solution is reduced and recovered by utilizing the prior art, so that the selective separation effect is good, and the metal recovery rate is high. Simple process, low cost and easy realization of industrialization. |
| priorityDate | 2018-09-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 47.