Abstract
This paper examines the study and analysis of a dynamic system for simulating the roasting process in fluidized bed furnaces of polymetallic sulfide ores under conditions of uncertainty and complexity. The choice of a mathematical model depends a lot upon the features of the object and its controllability. Chemical-technological processes are complicated physical and chemical systems. Substance flows, which are part of these systems, are, as a rule, multicomponent. Therefore, for the purpose of study and qualitative control over chemical-technological processes, it is essential to apply the method of mathematic simulation, based on system analysis strategy, qualitative analysis of its structure, mathematical simulations and evaluation of unknown parameters.