http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2001122623-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b70f21b272a91a9a9f6f774bc765e7b2 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-20 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G15-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C30B29-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B58-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B9-02 |
| filingDate | 1999-10-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_97f93ae0d2a00fe969ac38ee6cd76bfc http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c4fcb9058656c6083960351e2d875a06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_daa2625846c78fb566d5bc160c7266ee http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_001d1b26de720df3bf2e142427f9c8c7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_78a9891dff1e6535ff63bec0695fd713 |
| publicationDate | 2001-05-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2001122623-A |
| titleOfInvention | Gallium purification method and apparatus, and gallium raw material for preparing compound semiconductor |
| abstract | (57) [Problem] To obtain high-purity gallium with good operability and high yield by a recrystallization method by solidification of a melt. Then, a Ga raw material for producing a compound semiconductor that can manufacture an intended semiconductor without controlling the doping of impurities is obtained. SOLUTION: While stirring a liquid state gallium raw material contained in a container, solidification is advanced from an inner wall surface of the container toward a center of the container such that a cylindrical solidification interface is gradually reduced in diameter, and all of the raw material in the container is stirred. Before solidification, the liquid phase present in the center of the container is sucked and moved in a liquid state to another container and fed to another gallium purification step, while the solidified phase in the container is melted in the container and While stirring the molten phase, solidification proceeds so that the cylindrical solidification interface gradually decreases in diameter from the inner wall surface of the container toward the center of the container, and all of the raw materials in the container exist in the center of the container before solidifying. A method for purifying gallium in which a liquid phase is repeatedly suctioned and transferred to another container in a liquid state. By measuring the concentration of impurities in the liquid phase existing in the center of the vessel, the concentration of impurities in purified Ga, which has been regarded as an analysis limit in a glow discharge mass spectrometer, can be ascertained. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108588449-A |
| priorityDate | 1999-10-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 29.