Adjustment of residual lead from oxidized lead smelting and sulfur concentrate in rotary kiln slag by less than 1%

In lead smelters, rotary kilns are used to melt the input feed (concentrate, lead sulfate, battery soil and all soils with acceptable lead grade). Depending on their nature, these foods often contain between 50 and 80 percent lead.
According to international standards, the amount of lead in slag from the melting of incoming soil in rotary kilns should not be more than 1.5 to 2%.
The purpose of this set is to provide a suitable, engineered and feasible solution to reduce the lead grade in the tailings of the rotary kiln.

The Challenge: Minimizing the consumption of additives
Minimize melting time
Prevent lead oxidation
Prevent the use of additives that could damage the refractory furnace
Avoid methods that reduce the efficiency of lead extraction
Maximum lead extraction efficiency along with economic efficiency
Avoid methods that are inconsistent with the implementation of the first proposal