http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-231211-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a5d524a8dad6401b8a3b47995d4fcded http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_078e84f9e29e4a3433839be01f465777 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-47 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-47 |
| filingDate | 1923-10-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1925-03-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-231211-A |
| titleOfInvention | Improvements in or relating to the recovery of oxalates and other organic substances |
| abstract | Oxalates, such as calcium oxalate, and other organic compounds occurring or formed in vegetable products, such as the bark of Terminalia Arjuna or the flesh of plants of the genus Opuntia, are recovered therefrom by passing the material in the form of an aqueous pulp over a selecting surface to which the desired organic compound tends to adhere. Such a surface may be, for example, crepe rubber, woollen blanket, or the surface of rough-sawn wood. The pulp may first be passed through a sieve to remove part of the cellulosic matter, which may have been opened out by treatment with reagents such as sodium hydrate or carbonate. The pulp may be treated also with reagents such as sesame oil which tend to prevent undesired material adhering to the selecting surface. The process may be applied to natural products containing soluble organic acids, such as tartaric or citric acid, such products being treated with reagents, such as alkaline earth salts, to precipitate insoluble salts which are then recovered by the process described. In an example describing the separation of calcium oxalate from the bark of Terminalia Arjuna, the selecting surface is crepe rubber which covers the surface of a belt lying more or less horizontally below the stream of pulp flowing from the sieve. The oxalate particles adhere to the belt, while the remainder is carried away by the flow of the pulp assisted, if necessary, by water jets playing on the belt. The belt moves in the opposite direction to the flow of the pulp and carries the oxalate particles to a point where they can be removed. The belt may be given a lateral or other shaking movement, and may have a riffled surface. The selecting surface may alternatively be arranged on a moving disc, on the periphery of a wheel, or inside a tumbling barrel. Specifications 201,131 and 227,924 are referred to. |
| priorityDate | 1923-10-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 27.