http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104826983-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B22C1-22 |
| filingDate | 2015-04-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2017-12-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2017-12-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-104826983-B |
| titleOfInvention | A kind of alkalescent phenol resin old sand and its renovation process |
| abstract | The present invention relates to a kind of method of alkalescent phenol resin regenerating used, comprise the following steps：(1) it is its 0.2 2% pulvis that quality is mixed into alkalescent phenol resin old sand, and 600 800 DEG C are heated to after well mixed and carries out thermal reclamation 30min 60min；(2) old sand after thermal reclamation is removed impurity in reclaimed sand, produces alkalescent phenol resin reclaimed sand by screening.Wherein, the pulvis is high price carbonate or sulphite.Pulvis of the present invention easily decomposes at high temperature, its corresponding oxide can be formed, these oxides add in reclaimed sand the intensity that can improve core, and significantly improve regeneration effect, reclaimed sand after treatment burns decrement etc. in sour consumption value, pH value, meal with wine obvious reduction, and reclaimed sand can substitute the condition that roughing sand meets heating core and cold core, the quality of the invention for improving reclaimed sand, pollution of the reduction old sand to environment, and the cost of saving foundry enterprise Modeling Material are significant. |
| priorityDate | 2015-04-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 45.