http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103539091-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8ec5284b467459bc08e01a5e2e123638 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B25-18 |
| filingDate | 2013-10-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2015-06-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_59882ae00d9fffb4813feb09bb95b683 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_90225fbe265adfed48953016889414a8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_84b3ace86534e37d8188db71e37b1c6a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_083bb39fa5825e89d411df8dbbcf0642 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3590404ae615487209eb6c6efc14cc5f |
| publicationDate | 2015-06-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-103539091-B |
| titleOfInvention | Method for preparing phosphoric acid by catalytic reduction of low-medium-grade phosphorite |
| abstract | The invention relates to a method for preparing phosphoric acid by catalytic reduction of low-medium-grade phosphorite, belonging to the technical field of phosphorus chemical and industrial treatment. The method comprises the following steps of uniformly preparing mixed materials after grinding phosphorite, silica and a carbon reducing agent to 85% and passing through a 150-mesh sieve; and adding a catalyst and a binding agent for uniformly mixing, extrusion-molding, and preparing the phosphoric acid after carrying out reduction reaction through a kiln-process phosphoric acid process. The method disclosed by the invention has the beneficial effects that firstly, the catalyst is added for achieving reducing, catalyzing and fluxing effects, temperature of phosphorite reduction reaction is effectively lowered by 100 DEG C-200 DEG C, energy consumption is reduced and production cost is lowered; secondly, compared with a well-known process, phosphorite high-temperature reduction reaction time is shortened by 15%-40% under the condition that the phosphorite reaches the same reduction rate, thereby facilitating lowering energy consumption and further reducing production cost. |
| priorityDate | 2013-10-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 33.