http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2010105886-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_129e393582e6bdf4029baf2206522f45 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01F11-46 |
| filingDate | 2008-10-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3057f76295d68569799f1688ae98cbcb |
| publicationDate | 2010-05-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2010105886-A |
| titleOfInvention | Gypsum manufacturing method |
| abstract | A highly pure α gypsum is produced. [Solution] Using a high-purity calcium hydroxide slurry and an aqueous solution containing sulfate radicals as raw materials, high-purity β-gypsum is synthesized and crystallized at a reduced temperature to dihydrate and purify gypsum. After removing the fine particles from the slurry containing the precipitated dihydrate gypsum, by adding a crystallizing agent and pressurizing and heating the dihydrate gypsum slurry, the purity is high (for example, 99.5% by weight or more). A method for producing an alpha gypsum is provided. The calcium hydroxide purity in the solid contained in the calcium hydroxide slurry is preferably 98% by weight or more. The aqueous solution containing a sulfate radical is preferably an aqueous ammonium sulfate solution. [Selection figure] None |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-101568616-B1 |
| priorityDate | 2008-10-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 39.