http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2020066780-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6bd0cdbc5c67cf4957ed83c89140748e |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-20 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B11-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-44 |
| filingDate | 2018-10-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ac580255cda0c978a031772e211650ad http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ed79748022193d5addfc4179434e5985 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c70205f98c9255c4d965ca8f2d0edbfb |
| publicationDate | 2020-04-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2020066780-A |
| titleOfInvention | Ruthenium recovery method |
| abstract | PROBLEM TO BE SOLVED: To provide a method for simply and inexpensively recovering high-quality ruthenium from an aqueous solution containing ruthenium and sulfuric acid produced by various treatments in a factory for producing industrial products using ruthenium. SOLUTION: A sodium-based neutralizing agent and / or a magnesium-based neutralizing agent is added to an aqueous solution containing ruthenium and sulfuric acid until the pH of the aqueous solution becomes 2.5 or more to form a precipitate containing ruthenium. Precipitate and collect this precipitate. Before the precipitation and recovery of the precipitate, a calcium-based neutralizing agent is added to the aqueous solution containing ruthenium and sulfuric acid until the pH reaches an arbitrary value of 1.0 or less to precipitate gypsum, and It is preferable to further include a step of removing gypsum by solid-liquid separation. [Selection diagram] Figure 1 |
| priorityDate | 2018-10-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 34.