http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105502470-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/C01F17-247 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01F17-00 |
| filingDate | 2015-12-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2017-08-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2017-08-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-105502470-B |
| titleOfInvention | A kind of preparation method of low impurity entrainment lanthanum carbonate or lanthanum carbonate cerium |
| abstract | The present invention relates to a kind of preparation method of low impurity entrainment lanthanum carbonate or lanthanum carbonate cerium, it is characterized in that：Using lanthanum chloride or lanthanum-cerium chloride solution as material liquid, using ammonium bicarbonate soln as precipitating reagent, new water or carbon is stayed to sink supernatant for bottom liquid in precipitation reaction bottom portion, according to crystal seed REO：The amount that material liquid REO is the wt % of 1wt% ~ 10 adds lanthanum carbonate or lanthanum carbonate cerium crystal seed；Under the conditions of 20~50 DEG C, rare earth chloride and ammonium bicarbonate soln are added simultaneously precipitation reaction is carried out in reactor, it is 1 to add rate ratio:1~3:1, after reaction terminates, separation of solid and liquid, water washing, you can obtain lanthanum carbonate or lanthanum carbonate cerium product.Its advantage is：By the feeding manner, relative feed rates, the precipitation technological parameter such as pH value and endpoint pH that adjust ammonium bicarbonate precipitation lanthanum chloride or lanthanum-cerium chloride solution, manganese, copper etc. is set not to occur precipitation reaction, the soft-agglomerated few, crystal particle diameter of formation is small, manganese, copper impurity wrap up few lanthanum carbonate or lanthanum carbonate cerium product. |
| priorityDate | 2015-12-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 42.