http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108793224-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2002-72 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-52 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01F17-247 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01F17-247 |
| filingDate | 2018-09-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-04-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-04-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-108793224-B |
| titleOfInvention | Method for preparing narrow-distribution crystal form yttrium carbonate by sodium carbonate precipitation |
| abstract | The invention discloses a method for preparing narrow-distribution crystal form yttrium carbonate by sodium carbonate precipitation, which adopts sodium carbonate as a precipitator and yttrium chloride as a feed liquid, and strictly controls the reactionObtaining yttrium carbonate seed crystal under the conditions of temperature, yttrium chloride feed liquid feeding speed, pH value in the reaction process, parallel flow feeding position and the like, then carrying out precipitation reaction by taking the yttrium carbonate seed crystal slurry as a base solution, and controlling the precipitation temperature to be 70-90 DEG o C and precipitation reaction pH5.5-6.5 to obtain (D) 90 ‑D 10 )/(2D 50 ) Y of narrow distribution crystal form less than 0.8 2 (CO 3 ) 3 •3H 2 And O. The method obtains the crystal form yttrium carbonate with narrow distribution by strict control of the crystal seed preparation process and the precipitation process, has low consumption of the sodium carbonate precipitator, and avoids ammonia nitrogen pollution. |
| priorityDate | 2018-09-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 34.