http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108138258-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-20 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B3-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B15-008 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B30-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B15-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B30-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-12 |
| filingDate | 2015-09-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-10-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-10-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-108138258-B |
| titleOfInvention | Method for removing arsenic from arsenic-containing materials |
| abstract | The present invention relates to a method for removing arsenic from a material with high arsenic and/or selenium content, comprising adding the material to a pressure reaction tank, adding an alkaline leaching solution to the reaction tank, adding an oxidizing gas, and mixing ingredients for A homogeneous solution was obtained, and the solution was subjected to selective pressure leaching for arsenic separation. The solution is subjected to the first step of solid-liquid separation to obtain an arsenic solution and a solid with low arsenic content. A combination of Fe+3 and Ca+2 and Ce+3, Fe+3, Mg+2 precipitants were added to the solution. The arsenic precipitation product is subjected to the second step of solid-liquid separation. Optionally, the method further includes the step of crystallizing sodium sulfate with the arsenic-free alkaline solution, and performing the third step of solid-liquid separation on the crystallized product (Na 2 SO 4 ). |
| priorityDate | 2015-09-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 73.