Based on empirical dependences of the value of a variable Y-the degree of sublimation of germanium (%) in the mode of sulfide melting (T = 1350 degrees C, tau = 1 h)-on the values of the parameters that are characteristic of the content in charge, %, X 1 x 10(-2), of the basicity {([CaO] + [MgO])/[SiO2]}; X-2 x 10(-3), of germanium; X 3, of the slag-forming components (Sigma[CaO], [MgO], [SiO2]); X-4, of carbon; and X 5, of sulfur, by the method of computer mathematics with the use of the standard program packets Excel, Mathcad, and Maple, an adequate mathematical model of the influence of the charge composition on the degree of pyrometallurgical sublimation of germanium has been constructed.