Process for the production of magnesium oxide from brine or bittern
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Refractory bricks contg. graphite and a binder - esp. for linings in oxygen converters for steel mfr. and similar uses
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Silica refractory articles - have silica particles below 2mm size
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Improved refractory articles
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Improvements relating to the manufacture of refractory ramming masses, refractory castables, refractory plastics, refractory mortars and chemically bonded fireclay bricks
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Improvements relating to the manufacture of refractory bricks
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Improved pouring nozzle for steel plants and foundries
