http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-747016-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_32e64a7b278c8322dc5c8af6d2a72e25 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B7-32 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B7-32 |
| filingDate | 1953-01-19^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7d064013baebd8a5855902caddb668ab |
| publicationDate | 1956-03-28^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-747016-A |
| titleOfInvention | Improvements in the manufacture of light coloured aluminous cement |
| abstract | Phosphorus is produced by heating in an electric furnace a mixture of either (1) defluorinated fluorapatite, bauxite and anthracite; (2) calcium aluminium phosphate, opalite and anthracite, or (3) calcium aluminium phosphate, limestone and anthracite. The fluorapatite is defluorinated by heating for 14 hours at 1000 DEG C. in a current of steam. Iron phosphide is separated from the slag formed from the phosphorus production by keeping the slag molten and quiescent. Specification 393,799 is referred to.ALSO:A process for producing a high alumina material for grinding to a cement comprises reducing a phosphorous containing mineral mixture to form phosphorous and a slag containing aluminium, calcium and silicon wherein the ratio alumina to calcia is between 0.5 and 1.85 and silica is up to 10 per cent, and contains less than 3.5 per cent fluorine when the silica is less than 5 per cent, or less than 2.5 per cent fluorine when the silica is 5-10 per cent. The slag is retained in a molten and quiescent state for a time sufficient to allow separation of iron phosphide. The mineral mixture may be a naturally occurring a aluminium phosphate of low fluorine content, or b aluminium calcium phosphate, or bauxite or alumina all together with a naturally occurring calcium phosphate or defluorinated fluorapatite and bauxite. Specification 793,799 is referred to. |
| priorityDate | 1953-01-19^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
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