http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109837400-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/C22B34-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B59-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B7-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-36 |
| filingDate | 2018-11-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-08-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-08-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109837400-B |
| titleOfInvention | Method for extracting rare earth and niobium from niobium-rich slag |
| abstract | The invention relates to a method for extracting rare earth and niobium from niobium-rich slag, belonging to the field of metallurgy and secondary resource comprehensive utilization. The method for extracting rare earth and niobium from niobium-rich slag comprises the following steps: 1) leaching niobium and rare earth in the niobium-rich slag into a leaching solution; 2) adjusting the pH value of the leaching solution to 0.1-0.5, extracting the leaching solution by using an organic phase containing an extracting agent and an organic solvent, and separating a loaded organic phase; the extractant is an etheramide functional ionic liquid; 3) adopting water as stripping liquid to strip the loaded organic phase to obtain rare earth-containing solution; adjusting the pH value of the raffinate after the loaded organic phase is separated in the step 2) to 1.5-2.0, and hydrolyzing niobium to form a precipitate rich in niobium. The method for extracting rare earth and niobium from niobium-rich slag can effectively separate rare earth metal ions from niobium metal ions, can reduce acid leaching consumption and impurity removal process, and has simple and environment-friendly process and wide application prospect. |
| priorityDate | 2018-11-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 35.