CHAPTER 3: MATERIALS AND
METHODS
81
FIGURE 3.5 Flowchart presenting the process at which granulated slag is generated.
Since copper concentrate applied to production contains over 2.5% of lead, the metal is
concentrated in various by-products generated during the smelting process. Lead-rich by-
products are the base materials for the process aiming at lead recovery. Process relies on
reductive smelting in reverberatory-rotary Dörschel furnace. Finally, lead is separated from
slags and further
subjected to refining, where raw lead is obtained (Figure 3.6).
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