http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S59128216-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b1784eb7fc902d292db30e120ec712d5 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G28-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G28-00 |
| filingDate | 1983-01-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7df6eb7ea21acb1875334bbfff8b8f31 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dfdb7590a64858ff07317fb5eab30804 |
| publicationDate | 1984-07-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S59128216-A |
| titleOfInvention | Manufacture of arsenious acid |
| abstract | PURPOSE: To manufacture arsenious acid of high purity in a high yield by reacting an aqueous soln. contg. copper sulfate with copper sulfide contg. arsenic to obtain a soln. contg. leached arsenic, reacting the soln. with a precipitate contg. arsenic sulfide, and reducing and concentrating the resulting soln. freed of copper. n CONSTITUTION: An aqueous soln. contg. copper sulfate is reacted with copper sulfide contg. arsenic produced in a copper removing stage at about 70W90°C for about 90W150min with stirring, and the resulting slurry is subjected to solid- liq. separation to obtain copper sulfide and a soln. contg. leached arsenic. The soln. contg. leached arsenic is reacted with a precipitate contg. arsenic sulfide at about 70W90°C for about 90W150min with stirring to form copper sulfide contg. arsenic and a soln. freed of copper, and they are subjected to solid-liq. separation. The copper sulfide contg. arsenic is used in said arsenic leaching stage, and the soln. freed of copper is reduced with a gas contg. SO 2 . The reduced soln. contg. arsenic is concentrated by heating or other method, it is cooled to crystallize arsenious acid, and the arsenious acid of high purity is recovered by solid-liq. separation. n COPYRIGHT: (C)1984,JPO&Japio |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102115166-A |
| priorityDate | 1983-01-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 24.