Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2629837A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CONS SCIENCES Inc
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CONS SCIENCES Inc
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Publication date
Application filed by CONS SCIENCES IncfiledCriticalCONS SCIENCES Inc
Priority to GB2629837ApriorityCriticalpatent/GB498183A/en
Publication of GB498183ApublicationCriticalpatent/GB498183A/en
Magnesium oxide is ground with a small proportion of silica, shaped, and vitrified at a temperature below the fusing point of magnesia. Suitable proportions are 95 per cent of magnesia to 5 per cent of silica, and the firing temperature is preferably 1400-1600 DEG C. More silica reduces the refractory properties, and less increases the firing temperature. To reduce shrinkage, the magnesium oxide may be mixed with a portion of the silica, say 2 per cent, fired, ground with the remainder of the silica, shaped, p and again fired.
GB2629837A1937-09-281937-09-28Improvements in or relating to magnesium oxide products and method of making the same
ExpiredGB498183A
(en)