http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20030053228-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b3310ea86f3c492f6c09d7be6592866d http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_4c30e8a2248ee5bef57f852132563d86 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23F1-46 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C23F1-46 |
| filingDate | 2001-12-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_abc09dd29a9e558de4cd9117c859ea63 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_48ab0c611b4d881422cd637152d12550 |
| publicationDate | 2003-06-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-20030053228-A |
| titleOfInvention | Recycling method of waste sulfuric acid etching solution, waste chloric acid etching solution and waste nitric acid etching solution |
| abstract | The present invention relates to a method for regenerating waste sulfuric acid etching liquid, waste hydrochloric acid etching liquid and waste nitric acid etching liquid, and more particularly, (a) hydrochloric acid by vacuum evaporation of a mixed solution of waste sulfuric acid etching liquid containing aluminum and waste acid hydrochloric acid etching liquid containing aluminum. Recovering; (b) further adding aluminum to the spent sulfuric acid etching solution containing aluminum after vacuum evaporation; (c) adding a waste nitric acid etchant to the waste sulfuric acid etchant added with aluminum to prepare a mixed solution; And (d) substituting, rectifying and vacuum evaporating the mixed solution to separate the nitric acid and aluminum sulfate water treatment coagulants.n n n The waste sulfuric acid etching solution, waste hydrochloric acid etching solution and waste nitric acid etching liquid recycling method of the present invention are environmentally friendly and can be recycled from waste sulfuric acid etching liquid, waste hydrochloric acid etching liquid and waste nitric acid etching liquid and aluminum sulfate water treatment coagulant, hydrochloric acid and nitric acid with high purity. |
| priorityDate | 2001-12-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 31.