CHEMICAL COMPOSITION OF MULTICRYSTALLINE SILICON OBTAINED FROM METALLURGICAL MATERIAL
A mathematical modeling of the distribution of impurity elements in the carbothermic process under smelting of metallurgical silicon in electric arc furnaces is carried out on the basis of the multi-reservoir dynamics method. Electron probe analysis of multicrystalline silicon samples derived from metallurgical raw materials allow to determine the types of chemical bonds of elements in the inclusions. It is shown that concentration of harmful impurities in the samples under investigation can be reduced by choosing the optimal modes of crystal growth under directional crystallization.