http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113321546-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ec3a5f434b2f386c8e7bec3fa7a6b787 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01F7-0693 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C05C3-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01F7-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C05G1-00 |
| filingDate | 2021-07-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c38f871428f16067a0ccea0f5ff85634 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_672dfb4a8430b6b3dce43680c77c4004 |
| publicationDate | 2021-08-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-113321546-A |
| titleOfInvention | A kind of method for preparing nitrogen-potassium compound fertilizer and metallurgical grade alumina from alunite |
| abstract | The invention relates to a method for preparing nitrogen-potassium compound fertilizer and metallurgical grade alumina from alumite, comprising the following steps: selecting alumite: selecting alumite powder below 100 mesh; ammonia-dissolving potassium removal: mixing the selected alumite powder with The ammonia solution is mixed, reacted at 50-200 ° C for 5-120 minutes to remove potassium, and potassium enters the liquid phase in the form of potassium sulfate; the removal of potassium solution is separated: the slurry after ammonia is dissolved in potassium is separated and washed, and the liquid phase is ammonium sulfate. and potassium sulfate solution, the solid phase is the depotassium solid phase; the depotassium solid phase Bayer method is used to prepare metallurgical grade alumina: the main components of the depotassium solid phase are alumina and silicon oxide, and the metallurgical grade sandy alumina is prepared by the Bayer method; Preparation of compound fertilizer: The depotassium liquid phase is concentrated, crystallized and dried to obtain nitrogen-potassium compound fertilizer. The invention can realize efficient separation of potassium, aluminum and silicon, and prepare nitrogen-potassium compound fertilizer and metallurgical grade alumina products, which is beneficial to industrialization. |
| 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: 42.