http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H06228614-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5fb9798bf05293ffe6d2e0fde58c3cdb |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B22F9-22 |
| filingDate | 1993-02-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e1d023e258651d9be7be9602285ce482 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_53ba84172b45b1798e7ebe2f007bb56c |
| publicationDate | 1994-08-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H06228614-A |
| titleOfInvention | Manufacturing method of metallic magnetic particle powder mainly composed of iron and having a spindle shape |
| abstract | (57) [Abstract] [Purpose] Industrial use of metallic magnetic particle powder mainly composed of spindle-shaped iron having a uniform particle size and no dendritic particles mixed together and having high coercive force. To provide the production method obtained. [Composition] Spindle-shaped goethite particles are produced by aerating an oxygen-containing gas through a suspension containing FeCO 3 obtained by reacting an aqueous solution of ferrous salt and an aqueous solution of alkali carbonate to carry out an oxidation reaction. In the method for producing a spindle-shaped metal magnetic particle powder, wherein the goethite particles or the spindle-shaped hematite particles obtained by heating and dehydrating the goethite particles are heated and reduced in a reducing gas. An acidic salt compound of Al is added to the aqueous solution of ferrous salt, and a basic salt compound of Al is added to the aqueous solution of alkaline carbonate, whereby the particle sizes are uniform and dendritic particles are mixed. In addition, a metal magnetic particle powder containing iron as a main component, which has a spindle shape and has a high coercive force, is obtained. |
| priorityDate | 1993-02-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 39.