Spon, Ernest, Haldane, Robert, Lock, Charles G. Warnford (Charles George Warnford), 1853-1909 · London ; New York : E. & F.N. Spon · leaf 361
sting The hearth is lined with slags from a slowly and in one operation at a low previous operation, spread while still temperature. Applying this principle pasty, and in a manner to leave a de- to the English furnace, very good re- pression where the molten lead can sults have been secured at the… … skimmings from the outer receptacle, con- sisting mainly of a mixture of sulphur and lead, are thrown in upon the charge, and are rapidly attacked by the oxide and sulphate, occasioning separation of metallic lead. The charge is stirred at intervals, and some small coal is occa- sionally scattered…
Workshop recipes · Technology · Industrial arts
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
