Education of the republic of uzbekistan tashkent state technical university named after islam karimov

Geological Engineering
135 
For experimental confirmation of this assumption, laboratory tests of the roasting of 
sulfide zinc concentrate with the introduction of additional additives into the charge were carried 
out. 
CONCLUSION.
The studies have established that introducing such compounds as CaO, 
Na
2
O, K
2
O, CaCO
3
into the roasting charge due to the formation of solid thermodynamic 
compounds with iron and silica oxides leads to a decrease in the shape of ferrites and zinc 
silicates. Based on the obtained experimental data, a possible mechanism of reactions of the 
interaction of the charged components was proposed. 
The thermodynamic substantiation of the reactions of the interaction of the charge 
components according to the proposed mechanism has been carried out. The optimal firing 
temperature was chosen, and the amount of additional CaCO
3
added to the firing charge was 
determined. 
Reference 
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