http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102666388-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1651c4ad4845043a6c27d256cb260f61 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-62 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-52 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-03 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01F11-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01F11-183 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01F11-181 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/C01F11-00 |
| filingDate | 2010-10-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2014-12-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f08bd65996b7b3bb53ce0b0171383a7e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9c310f8cd4d6d360940d4b864f0f3d30 |
| publicationDate | 2014-12-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-102666388-B |
| titleOfInvention | Production of calcium carbonate |
| abstract | A method of producing calcium carbonate from lime comprises the steps of: (i) providing an aqueous solution comprising 10% to 35% by weight of dissolved polyhydroxy compound and 1% to 5% by weight of dissolved calcium hydroxide (expressed as Ca(OH)2) and having a pH of at least 11.5; (ii) treating the solution prepared in step (i) to remove solids including suspended solids; (iii) dispersing carbon dioxide through the solution so as to form calcium carbonate with a consequential reduction in the pH of the reaction mixture, (iv) during a time period beginning at the start of a sudden, short rise in pH and ended during a subsequent fall in pH but before it reaches 9.5 terminating the dispersion of carbon dioxide and adding an alkaline reagent to maintain a pH for the product mixture of at least 9.5, and (v) recovering precipitated calcium carbonate. |
| priorityDate | 2009-10-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 40.