http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110898468-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D21-01 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D21-01 |
| filingDate | 2019-11-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-09-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-09-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110898468-B |
| titleOfInvention | Method for improving filter pressing efficiency of desulfurized gypsum |
| abstract | The invention discloses a method for improving the filter-pressing efficiency of desulfurized gypsum, which comprises the steps of adding a targeted flocculating agent into desulfurized gypsum slurry, uniformly stirring, and then carrying out filter pressing; the targeted flocculant is selected from one or more of anionic polyacrylamide, cationic polyacrylamide and amphoteric high-molecular polyacrylamide. The desulfurization gypsum slurry has high flue gas dust content, the grain diameter of the flue gas dust is less than 10 mu m, and the grain diameter of aluminosilicate in the flue gas dust is controlled to be more than 20 mu m by adding the targeted flocculant, so that black substances in the desulfurization gypsum slurry are flocculated and uniformly dispersed into calcium sulfate crystals, black mud skin is prevented from being formed on the surface of a filter cake, the problem that water in the filter cake is not easily filtered out due to the fact that black impurities in the desulfurization gypsum slurry are coated on the surface of the filter cake is effectively solved, the use amount of the flocculant is reduced, the filter pressing efficiency is greatly improved, and the filter pressing time is shortened. |
| priorityDate | 2019-11-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 24.