| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_4da8f51531e628ab8522fd85b02b7376 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-58 |
| filingDate |
1992-12-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_605b01eb1449ab4c9d9cfdf28a8291b4 |
| publicationDate |
1994-06-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-H06170380-A |
| titleOfInvention |
Method for fixing fluorine in waste liquid containing fluorophosphate ion |
| abstract |
(57) [Summary] [Objective] Fluorine in waste liquid containing fluorophosphate ions is reduced to a low value by a relatively inexpensive chemical and by a means that can be easily implemented industrially. [Structure] Sulfuric acid was added to a waste liquid generated during the production of hexafluorophosphate so that the concentration of sulfuric acid was 35% by weight, and this was heat-treated for 2 hours at a treatment temperature of 80 ° C while stirring. Next, calcium hydroxide is added until the pH of the solution shows 11, and the concentration of residual fluorine in the solution is reduced to 20 ppm. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-100670633-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2013054875-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-WO2014208234-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113816349-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2010064003-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105555381-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105555381-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6666973-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-0046157-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20160024937-A |
| priorityDate |
1992-12-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |