426 Di:ceMBER 12, 1903. Scientific American pairs of huge Allis-Chalmers iron vessel, lined with refractory … it reaches the stage known as the next lower portion, at a tem- perature of about 1,000 deg., the the. boil, The process continues limestone would be found decom- from 8 to 10 minutes, at the even temperature for treatment in the converters. elose ef which time all the im- posed: into lime and…
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