Recent progress in the treatment of tube
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Article
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1923
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Wiley (John Wiley & Sons)
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proccss '' kilns. Ti1 otlicr words, tlic licnt hi gnscs a t nhoiit 900' C. is iiiorc cnicicntly iitiliscd tlinti tlic siitiic ntiioant of licnt in t1oul)lc tlic quantity of gnses at, say, 500ยฐ C. Still, wnstclirnt, r c c o \ -t ~~\* hoilcrs arc in successful illid protitnblc opcrntioti with tlic cnt