http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108529581-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2006-80 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A23K20-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B25-322 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B25-325 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B25-321 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A23K20-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B25-32 |
| filingDate | 2018-06-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-01-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-01-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-108529581-B |
| titleOfInvention | Preparation method of feed-grade calcium phosphate salt |
| abstract | The invention discloses a preparation method of feed-grade calcium phosphate, which comprises the following steps: a. precipitating and separating iron, aluminum and magnesium in the diluted phosphoric acid; b. neutralizing, oxidizing and removing impurities from calcium-containing slurry; c. reducing the membrane purified clear liquid to prepare calcium hydrophosphate; d. the concentrated phosphoric acid is oxidized, chelated, purified by a membrane, reduced and then reacted with calcium hydrophosphate to prepare calcium biphosphate. The invention reduces the heavy metal content in the phosphoric acid by three-stage impurity removal, obtains the feed-grade calcium phosphate product with low heavy metal content, can realize the joint production of DCP and MCP, has the characteristics of simple flow, strong purification pertinence, high efficiency, low cost and the like, and can be popularized and applied in calcium feed production enterprises. |
| priorityDate | 2018-06-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 65.