http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111547757-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2006-80 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01F17-229 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01F17-17 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01F17-229 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01F17-17 |
| filingDate | 2020-05-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-08-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-08-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-111547757-B |
| titleOfInvention | A method for producing low-calcium lanthanum oxide products by linking extraction and precipitation |
| abstract | The invention discloses a method for producing low-calcium lanthanum oxide products by linking extraction and precipitation, comprising the following steps: S1, mixing calcium carbonate and rare earth soap wastewater to obtain a saponified liquid; S2, mixing and separating blank organic and saponified liquid to obtain Saponified organic; S3, mixed cerium-less rare earth chloride feed solution with saponified organic; S4, mixed lanthanum neodymium feed solution with saponified organic; S5, mixed lanthanum chloride feed solution, lanthanum cerium feed solution and saponified organic in lanthanum-cerium separation line Medium mixing, etc. The present invention adopts the production method of extraction and precipitation linkage. The extraction process mainly controls the degree of calcium saponification and the process parameters and flow of rare earth soap, and the precipitation process mainly controls sodium carbonate, material liquid concentration and precipitation mode, so as to finally reduce the calcium in the lanthanum oxide product. The purpose of the content is to make the calcium content in the calcined lanthanum oxide product less than 0.05%, without setting up the lanthanum decalcification extraction line, the low calcium lanthanum oxide product can be produced, the production cost is reduced, and the existing technology is overcome. the problem of insufficiency. |
| priorityDate | 2020-05-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 39.