http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2018245179-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_28933c4f190c350edaba3e02c48559cd |
| 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/C22B3-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B15-00 |
| filingDate | 2015-09-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3839191397cd99776c6756be401e4720 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_46fa174ccb30b65e0db85db9ec055aa1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9465dab51d0fb625e7f95bfc3d253045 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_12aee9a26c1f5be25799be28ca6a5b4c |
| publicationDate | 2018-08-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-2018245179-A1 |
| titleOfInvention | Method for Removing Arsenic from Materials Containing Same |
| abstract | Process for the removal of arsenic from materials with a high arsenic content or materials with a high content in arsenic and selenium that comprises:n Adding the material to a pressurized reactor; Adding an alkaline lixiviating solution of a strong base dissolved in water to the reactor; Adding an oxidizing gas to the reactor; Mixing the above components in the reactor to obtain a homogenous pulp and subjecting it to a lixiviation under pressure that is selective for arsenic with respect to the other elements of interest present in the treated material; Subjecting the pulp obtained from the lixiviation step to a first solid-liquid separation step, thereby obtaining a liquor with dissolved arsenic and a solid with low arsenic content; Subjecting the liquor with dissolved arsenic to a precipitation of the arsenic with a precipitating agent, selecting compounds that supply the following cations: Ce 3+ , Fe 3+ , Mg 2+ , and a combination of Fe 3+ and Ca 2+ ; And, subjecting the product of the arsenic precipitation step to a second solid-liquid separation step, thereby obtaining a solid arsenic-containing product and an alkaline liquor free of arsenic. nn Optionally the process also comprises:n Subjecting the alkaline liquor free of arsenic to a sodium sulfate (Na 2 SO 4 ) crystallization step, thereby obtaining a pulp composed of Na 2 SO 4 crystals and an alkaline liquor free of Na 2 SO 4 ; Subjecting the product of the Na 2 SO 4 precipitation step to a third solid-liquid separation step, thereby obtaining a solid comprising Na 2 SO 4 crystals and an alkaline liquor. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110627179-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110627179-A |
| 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: 80.