Sentence Examples


  • Muffle furnaces are suitable for fine ores which are liable to decrepitate or sinter.
  • (a) Heating chamber fixed and forming part of furnace= muffle furnaces.
  • The " muffle," a graphite cylinder 6 in.
  • High, and heated either in a muffle or in a crucible furnace at a gradually increasing heat for forty or fifty minutes.
  • "Ultramarine rich in silica" is generally obtained by heating a mixture of pure clay, very fine white sand, sulphur and charcoal in a muffle-furnace.