| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_33da339176603b5c9aab45da00a6014a |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C25B3-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B25-232
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C25B3-25
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01F11-46
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B25-2204
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B25-223
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G49-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B25-222 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G49-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B25-223
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B25-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25B3-25
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B25-232
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01F11-46
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B25-222 |
| filingDate |
2016-04-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2017-08-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_508d57d13a630609e68573b4ba02a076
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_290cbd73dcce9e2ea1168bf2735aecf7 |
| publicationDate |
2017-08-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-9745193-B2 |
| titleOfInvention |
Method for removing iron in the manufacture of phosphoric acid |
| abstract |
In the manufacture of phosphoric acid from ore, the typical ore comprises minerals containing phosphorus and calcium along with varied amounts of other elements. Certain ores have substantial iron content which needs to be removed in order to produce quality phosphoric acid product. An improved method and associated chemical processing plant are disclosed for removing this iron. The method involves both reducing and adding oxalic acid to wet process phosphoric acid produced using an otherwise conventional manufacturing process. Iron oxalate precipitate is created which can then conveniently be separated therefrom. |
| priorityDate |
2014-10-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |