http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106517294-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G9-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B13-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G25-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01F17-235 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G3-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01F17-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G25-00 |
| filingDate | 2015-09-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-02-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-02-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-106517294-B |
| titleOfInvention | Process for producing metal oxide |
| abstract | The invention discloses a preparation method of metal oxide. The preparation method comprises the following steps: carrying out precipitation reaction on the metal salt solution by using ammonia gas and carbon dioxide gas, and controlling the mass ratio of the ammonia gas to the carbon dioxide gas to ensure that the pH value of a mixed system is 2.0-10.0 to obtain slurry; carrying out solid-liquid separation on the slurry to obtain waste liquid containing ammonium ions and metal carbonate and/or metal basic carbonate; roasting the metal carbonate and/or the metal basic carbonate to obtain metal oxide and waste gas containing carbon dioxide gas; the ammonia gas is obtained by adjusting the pH value of the wastewater containing ammonium ions through alkaline substances and carrying out steam stripping enrichment. Controlling to obtain metal oxide products with different crystal forms, particle sizes and appearances by gas-liquid reaction and adjusting the mass ratio of the three raw materials; and the ammonia gas is recycled by waste water, CO 2 The gas can also be recycled by waste gas, so the method has the advantages of short flow, low raw material cost, closed circulation of ammonium, low carbon, environmental protection and controllable product performance. |
| priorityDate | 2015-09-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 77.