http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104724744-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01F7-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B09B3-00 |
| filingDate | 2015-01-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2017-02-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2017-02-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-104724744-B |
| titleOfInvention | A kind of method that uses fly ash as raw material to develop solid polyaluminum chloride flocculant |
| abstract | The invention discloses a method for developing a solid polyaluminum chloride flocculant using fly ash as a raw material. The method uses fly ash as a raw material to develop a solid high-efficiency flocculant polyaluminum chloride through the intermediate product amorphous aluminum hydroxide [Al 13 (OH) 24 (H 2 O) 24 Cl 15 ·13H 2 O] (abbreviated as P-Al 13 ) crystallization. In the present invention, the aluminum-containing solution obtained by acid leaching the clinker obtained from the solid-phase reaction of sodium carbonate and fly ash at high temperature is reacted with sodium hydroxide to obtain an intermediate product of amorphous aluminum hydroxide, and then the aluminum hydroxide intermediate product is prepared under conditions of above 70°C and normal pressure. The hydrolysis-polymerization reaction with hydrochloric acid reaches a certain degree of alkalinity, and the P-Al 13 product is naturally crystallized at low temperature, and the remaining mother liquor and acid leaching liquor are combined and recycled to achieve zero discharge. The obtained solid product conforms to the national standard (GB15892‑2009) premium product specification. The invention is a method with low loss rate of aluminum ions and high conversion rate of P- Al13 . The flocculation test shows that the flocculation effect of the product P-Al 13 of the present invention is obviously better than that of Keggin-Al 13 ([AlO 4 Al 12 (OH) 24 (H 2 O) 12 ] 7+ ). |
| priorityDate | 2015-01-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 38.