http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110156061-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-62 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-03 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2002-72 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-61 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01C1-244 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01F11-18 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01F11-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01C1-244 |
| filingDate | 2019-05-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-08-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-08-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110156061-B |
| titleOfInvention | Method for preparing micro-nano structure calcium carbonate and ammonium sulfate by using waste phosphogypsum |
| abstract | The invention relates to a method for preparing calcium carbonate and ammonium sulfate with micro-nano structures by using waste phosphogypsum, which is characterized in that the phosphogypsum is ground into powder and then dispersed in water to form phosphogypsum dispersion liquid; sequentially adding a cationic surfactant and ammonium bicarbonate into the phosphogypsum dispersion liquid at the temperature of 25-50 ℃ under the stirring condition, continuously stirring and reacting after uniformly mixing until the obtained mixed liquid is free of bubbles, then carrying out suction filtration on the mixed liquid, and drying the obtained upper-layer solid after the suction filtration is finished to obtain calcium carbonate; and finally, concentrating and crystallizing the filtrate to obtain ammonium sulfate. The product prepared by the method can be used for building materials and fertilizers, can solve the problem of comprehensive utilization of solid waste residue phosphogypsum, can be used for building materials and fertilizers, and has high yield, good application prospect and little environmental damage. |
| priorityDate | 2019-05-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 44.