http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2017066520-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/C22B7-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25C1-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B30-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-08 |
| filingDate | 2016-09-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_42977f327db39d027537bde6093d0911 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ff11526c06536fb199dbb594cca3b438 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d04607de5fed4692472a18e1b013da8b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_909408629baf8b7516c495d72fc6b183 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c49e9ff2c8084aa866c68574dde63fb6 |
| publicationDate | 2017-04-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2017066520-A |
| titleOfInvention | Purification method of bismuth |
| abstract | The present invention provides a method for purifying bismuth in which bismuth is recovered from a liquid obtained after recovering noble metal from copper electrolytic slime. [MEANS FOR SOLVING PROBLEMS] (1) A neutralization treatment step in which an alkali is added to an acidic solution to adjust the pH to a range of 2.0 to 3.0, and then a solid-liquid separation is performed to obtain a neutralized filtrate and a neutralized starch. 2) Alkali leaching step in which alkali is added to the neutralized starch obtained in the neutralization treatment step and separated into an alkali leaching solution and an alkali leaching residue. 3) Sulfuric acid leaching solution and sulfuric acid leaching residue are added by adding sulfuric acid to the alkali leaching residue. 4) Cooling step to cool the sulfuric acid leachate obtained in the sulfuric acid leaching step to obtain bismuth sulfate crystals, 5) Add alkali to the bismuth sulfate crystals obtained in the cooling step, and add bismuth oxide. A bismuth oxidation step characterized in that it is obtained, and 6) an electrolytic step in which an acid solution is added and dissolved in the bismuth oxide obtained in the bismuth oxidation step, and the resulting solution is electrolyzed to obtain metal bismuth. [Selection] Figure 1 |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108754142-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112176204-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-115354172-A |
| priorityDate | 2015-09-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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