http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113479937-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_962e99b2a042511f4dd308bdafee2d60 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-61 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2006-80 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-20 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B59-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G49-06 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G49-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B59-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-26 |
| filingDate | 2021-07-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a7e25fabada4ff387a4f880ba951bcc4 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ffb8e26ff60aba3410efeafd16f59ea0 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_19b4318a04c68fb73a6a4284d71ffbff http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5e89bdfea47940521f259de35a08af4a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_db8595e0480e847fe08cfbf4fe2607d4 |
| publicationDate | 2021-10-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-113479937-A |
| titleOfInvention | A kind of method for preparing spherical iron oxide |
| abstract | The invention discloses a method for preparing quasi-spherical iron oxide. The preparation method includes adjusting the acidity of a mixed rare earth solution containing impurity iron; using a compound extraction solvent to extract and separate iron and mixed rare earth elements in cascade; The raffinate is discharged from the raffinate, and the composite extractant extracts iron to obtain a phase A microemulsion. The phase A microemulsion enters the stripping section; the phase B microemulsion is added to the stripping section as washing liquid and stripping liquid. Set it until no more precipitation is formed, filter, wash and dry to obtain the ferric hydroxide precursor; the B-phase microemulsion is obtained by mixing the composite extraction solvent and the alkaline solution; the ferric hydroxide precursor is roasted to obtain the ferric oxide; this method can be In the rare earth extraction and separation process, the iron removal wastewater is fully utilized to achieve the purpose of environmental protection. In addition, the loss of iron elements in the whole process of preparation is small, and the prepared iron oxide has high purity, small particle size of iron oxide powder and good dispersibility. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114277263-A |
| priorityDate | 2021-07-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 53.