| 摘要 |
A method for the treatment of metal-containing waste comprising introducing a particulate metal-containing waste into a plasma treatment unit, plasma treating the waste to form a layer of slag and recovering slag from the unit wherein the unit comprises an electrically conductive hearth for holding the slag, one or more waste inlets arranged above the hearth, and an electrode arranged above the hearth to form a plasma arc between the electrode and the hearth, wherein the one or more waste inlets are arranged so that the waste introduced into the unit is heated by the plasma arc before contacting the slag layer. Optionally, the plasma treatment may create a layer of metal beneath the slag which is also recovered. An apparatus for the treatment of metal-containing waste comprising a grinder and/or sorting means, and a plasma treatment unit with electrically conductive hearth, a moveable electrode arranged above the hearth so that an arc is formed between the hearth and the electrode, one or more waste inlets positioned adjacent the electrode so that the waste is heated by the arc on introduction to the unit. |
