http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-2601471-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c7ad58d3c0b071069a8ee0cb8c8ba2e8 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-20 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B3-387 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B3-3844 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B3-3842 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B3-3846 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B3-38 |
| filingDate | 1976-01-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4d3ed210c2b5791855acbf50ef44c3b9 |
| publicationDate | 1977-07-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-2601471-A1 |
| titleOfInvention | EXTRACTION PROCESS FOR THE SELECTIVE SEPARATION OF IRON AND ZINC |
| abstract | Zinc is selectively extracted from aq. solns. contg. Zn and other metals, esp. Fe salts, using virtually water-insoluble monohydric acids of formula R1R2P(=O)OH (I) in which R1 and R2 each is aliphatic, cycloaliphatic, araliphatic or opt. substd. aromatic gp. and one or both gps. may be bound to P by an O atom. (I) may be used in conjuction with a water-immiscible solvent and the two phases are intimately mixed for the min. possible contact time, and in any case is not >60 seconds. The short contact time ensures selective extn. of Zn, with little removal of Fe-(III). Losses of extn. agent (I) by formation of the stable (I)-Fe complex are reduced cf. prior art processes. Pref. the soln. is acidified with H2SO4 to pH0-6 before extn. and the process is at 0-50 degrees C, esp. 10-30 degrees C in a centrifugal extractor with a contact time of 3-15 seconds. Pref. (I) is di- (2-ethylhexyl) phosphoric acid (II). |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0030067-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0090119-A3 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0090119-A2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0385968-A2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0385968-A3 |
| priorityDate | 1976-01-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 35.