http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1147501-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_3997407790a9cf7baf4143c77f4361d6 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-03 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B35-03 |
| filingDate | 1967-05-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7e988ff09662a9385bdc939e450a4a88 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fb912dd91d6270f17a09d143744427d5 |
| publicationDate | 1969-04-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1147501-A |
| titleOfInvention | Magnesite refractories |
| abstract | 1,147,501. Magnesite brick. DRESSER INDUSTRIES Inc. 3 May, 1967 [7 June, 1966], No. 20576/67. Heading C1J. Magnesite brick consists of at least 85% MgO, less than 3% Al 2 O 3 +Fe 2 O 3 +Cr 2 O 3 , and CaO, SiO 2 and P 2 O 5 together totalling at least 2% and being in substantially the proportions enclosed by the area ABCD shown in Fig. 1, with the proviso that (a) the shape contains at least 0À2% P 2 O 5 ; (b) said P 2 O 5 , CaO and SiO 2 are substantially all combined as calcium silicophosphates; and (c) the B 2 O 3 content is sufficiently low and the proportions of the said P 2 O 5 , CaO and SiO 2 are such that the shape has a modulus of rupture at 2,600 F. in excess of 500 p.s.i. It is essential that the CaO and P 2 O 5 are allowed to react with each other rather than with the magnesia. The brick-making batch may be made by: (a) forming the batch from size-graded dead burned magnesite, finely divided silica, lime-yielding materials and calcium phosphate-yielding materials such as monetite, whitlockite, brushite, fluorapatite, chlorapatite, hydroxylapatite, carbonateapatite and isoclasite; (b) forming a prereacted grain from dead-burned magnesite, caustic magnesia, silica, lime-yielding materials and calcium phosphate-yielding materials, intimately mixing, burning, e.g. at 3140 F. and sizing and grading to form the brick-making batch; and (c) burning and ball-milling a binder batch of lime, silica, lime-yielding and phosphateyielding materials to form a prereacted binder batch which is then added to a size-graded dead burned magnesite brick-making batch. The brick-making batches are tempered with 5% lignin liquor pressed into brick at 10,000 p.s.i., dried at 250 F. for 10 hours and fired at 2800 F. for 10 hours. The fired brick may be impregnated with a non-aqueous cokeable binder such a star. |
| priorityDate | 1966-06-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 30.