http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109913647-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-20 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25C1-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B19-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B15-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25C1-16 |
| filingDate | 2019-04-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-10-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-10-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109913647-B |
| titleOfInvention | Wet processing method for recovering copper and zinc in bismuth middling |
| abstract | The invention relates to a wet processing method for recovering copper and zinc in bismuth middlings, which comprises the steps of wet grinding the bismuth middlings to powder with minus 160 meshes accounting for 98%, slurrying and presoaking the powder and diluted zinc electrolysis waste liquid, and filtering to obtain filtrate and filter residue with the final acid of 20-30 g/L. Roasting the filter residue at high temperature to desulfurize the filter residue into oxide, and mixing and smelting bismuth oxide and bismuth concentrate to form crude bismuth; adjusting the pH of the filtrate to 1.5-2.0, performing 3-stage countercurrent extraction, 2-stage washing and 2-stage back extraction on 20% +80% N902 kerosene to obtain a copper sulfate solution, and feeding the copper sulfate solution into a copper electrodeposition system to separate out 99.9% cathode copper at a cathode; and neutralizing the copper extraction raffinate to remove iron, removing impurity elements such as copper, cadmium and the like by using zinc powder, extracting and purifying the solution by using 40% +60% P204 kerosene, and performing 4-stage countercurrent extraction, 3-stage washing and 3-stage back extraction to obtain a zinc sulfate solution. The zinc sulfate solution absorbs the oil in the solution by an oil remover and is sent to a zinc electrodeposition system for electrodeposition of zinc. The material consumption is less, the automation degree is high, no waste water, waste and waste residue are generated in the production process, and the process is a pollution-free cleaning process. |
| priorityDate | 2019-04-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 50.