http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102731006-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f0dbb6c5de891d44014275a6b2212594 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B09B3-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B22-14 |
| filingDate | 2012-07-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2014-09-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_40981f29e309e5475b95316bddafc596 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_338c7f111cede30d1797bac2a624f0d9 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2463701c6714a551408341d0a964069a |
| publicationDate | 2014-09-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-102731006-B |
| titleOfInvention | Phosphogypsum cement retarder and preparation method |
| abstract | The invention discloses a phosphogypsum cement retarder and a preparation method thereof. The cement retarder is prepared from the following raw materials in percentage by weight: 90-95% of phosphogypsum, 2-5% of alkaline calcium-increase agent and 0.5-2% of modifier. The preparation method comprises the following steps: screening the raw materials, filtering, calcifying, calcining and drying under reflux, balling and granulating, and the like. In the invention, the raw material from the discharge port of the chemical industry enterprise is directly connected into the production line, and the phosphogypsum slag is modified for production, thereby avoiding the phosphogypsum stock and environmental pollution, maximally and fully utilizing the phosphogypsum raw material and recycling the effective phosphorus. When being used for producing cement, various properties of the phosphogypsum cement retarder are better than those of natural gypsum, thereby utilizing the waste, protecting the environment, greatly lowering the discharge treatment cost of the chemical industry enterprise, and greatly enhancing the economic benefit of the cement production enterprise. |
| priorityDate | 2012-07-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 26.