http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109019525-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B25-238 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B17-161 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B25-238 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B17-16 |
| filingDate | 2018-10-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-12-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-12-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109019525-B |
| titleOfInvention | Hydrogen sulfide microreactor and preparation method thereof, and phosphoric acid solution deep dearsenification and heavy metal removal method |
| abstract | The invention discloses a hydrogen sulfide microreactor, a preparation method thereof and a method for deeply removing arsenic and heavy metals from a phosphoric acid solution. The hydrogen sulfide microreactor is obtained by calcining excessive iron powder and sulfur in a protective atmosphere. Adding hydrogen sulfide microreactor into arsenic-containing phosphoric acid solution, wherein S can be slowly released from the surface of the hydrogen sulfide microreactor 2‑ ，S 2‑ With As in phosphoric acid solution 3+ 、As 5+ And the heavy metal ions react to generate precipitates so as to achieve the effect of deeply purifying arsenic ions and heavy metals in the phosphoric acid solution, the method has the advantages of high arsenic and heavy metal removal efficiency, low usage amount of the vulcanizing agent, low release amount of hydrogen sulfide and the like, and solves the problems of large usage amount, low utilization rate, H and the like of the traditional vulcanizing agent in the using process 2 S is seriously damaged, and the like, and the method has simple process and convenient operation and meets the requirement of industrial production. |
| priorityDate | 2018-10-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 35.