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lead mining process

The QSL, or Queneau-Schuhmann-Lurgi, process treats all grades of lead concentrates,including chemically complex secondary minerals, in arefractory-lined reactor into which oxygen and natural gas are blown through tuyeres at the bottom. The “green,” or unroasted, charge is first oxidized in a molten bath by the submerged oxygen injection; this produces a fluegas carrying oxides of lead and zinc as well…

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