Sentence Examples

  • 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.
  • The precipitate is collected in a filter-press, and then roasted in muffle furnaces with nitre, borax and sodium carbonate.
  • The door of the muffle is then opened and the current of air which is drawn over the scorifier rapidly oxidizes the lead, while the melted litharge gradually closes over the metal.