Rock Wool

CIM Bulletin1936
ROCK wool, one of the most recent additions to the list of Canadian-made, insulating materials, is a soft, light, fibrous material consisting of interlaced, flexible, glassy fibres so exceedingly fine that, individually, they are almost invisible to the naked eye and will float in air. In the process of manufacture, a suitable rock, generally a self-fluxing argillaceous dolomite consisting of nearly equal proportions of acidic and basic constituents, is melted to a completely fluid state and then converted into fibres either by a blast 6'f steam or air, or by a mechanical device.
Keywords: Air, coke, cupola furnace, dolomite, Rock Wool, thermal conductivity, Cupolas, Furnaces, Materials, Mines Branch, Plants, Rock, Rocks, Steam, Temperature
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