http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102718259-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0b75a05785dbfd86d27a87ddcdc5a524 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G28-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G3-10 |
| filingDate | 2012-06-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2014-01-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a1cf98f1586ba2b8ce89bda2b5e36e17 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dc880760730cb5c3cf2d17e0db6453b3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_aff07fc591ac4f893eabd0c22f276e32 |
| publicationDate | 2014-01-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-102718259-B |
| titleOfInvention | Method for depositing and converting arsenic wastewater into arsenic trioxide |
| abstract | A method for depositing and converting arsenic wastewater into arsenic trioxide includes: adding alkali into the arsenic wastewater for neutralization, filtering and adding copper sulfate, adding alkali to adjust pH value of solution, and depositing arsenic to obtain green copper arsenite or copper arsenate or mixture of the two; dissolving the copper arsenite or the copper arsenate or the mixture of the two in sulfuric acid solution, and feeding sulfur dioxide into the solution after dissolving for reduction to obtain arsenious acid solution and copper sulfate solution; heating and vaporizing mixing solution of the arsenious acid solution and the copper sulfate solution, and cooling, crystallizing and filtering to obtain mixture containing the arsenic trioxide and the copper sulfate; dissolving the mixture of the arsenic trioxide and the copper sulfate in water, and filtering, washing and drying to obtain the arsenic trioxide. The method for depositing and converting the arsenic wastewater into the arsenic trioxide is simple in process, material-saving, low in cost and high in recovery rate. |
| priorityDate | 2012-06-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 52.