Reduction of Lead-Rich Slags with Coke in the Lead Blast Furnace
175
Fig. 1 Schematic illustration of the lead blast furnace with indication of the reaction zones (left),
gas temperature at different heights (centre), and other labels (right)
Methodology
The approach used in this study consists of making a synthetic, PbO-rich slag, similar
in composition to that found in the lead blast furnace, and to melt them over smallscale coke beds in a vertical tube furnace. In this set-up, the slag drips down through
the coke, which will reduce the slag and produce metallic lead. The methodology
of these experiments can be subdivided into three categories: the preparation of the
materials before melting, the procedure of the dripping experiments, and the analysis
of the samples after the experiments. Each will be briefly discussed in subsequent
sections.
175
Fig. 1 Schematic illustration of the lead blast furnace with indication of the reaction zones (left),
gas temperature at different heights (centre), and other labels (right)
Methodology
The approach used in this study consists of making a synthetic, PbO-rich slag, similar
in composition to that found in the lead blast furnace, and to melt them over smallscale coke beds in a vertical tube furnace. In this set-up, the slag drips down through
the coke, which will reduce the slag and produce metallic lead. The methodology
of these experiments can be subdivided into three categories: the preparation of the
materials before melting, the procedure of the dripping experiments, and the analysis
of the samples after the experiments. Each will be briefly discussed in subsequent
sections.