Direct experimental evaluation of the conditions of silicon reduction and smelting in the ore/thermal furnace is practically impossible. This is associated with the high temperatures of the process, the forming of several intermediate components, the active participation of the gaseous phase in the process, but primarily with the impossibility of the physical determination of the compositions of the gaseous and condensed products of melting that form in the working zone in the conditions of the low temperatures (1). The latter is associated with the fact that the gaseous phase and the condensed products oxidize intensively. However, optimization of the silicon melting technological process is possible only on the basis of quantitative evaluation of the characteristics and the peculiarities of the process in the various zones of the ore/thermal furnace.With the objective of scientific substantiation of the resolution of this question, several investigators have attempted to create physical/chemical models of the silicon reduction processes (2).
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