The paper formulated the basic principle of technological refining of platinum metals, their transfer into the solution at the first stage. Ways of transfer of platinum metals in soluble form, a method of intensification of pro-process. Justified and selected factors has a key influence on the process of the preliminary mechanical activation and subsequent sintering of hard middlingы refining barium peroxide. Proposed and applied a flexible method of planning the study, which combines an element of uncertainty with a certain deterministic description of the statistical results. Six-factor mathematical model of the optimized process are obtained, the correlation coefficient of which with the experiment is 0.92. The optimal parameters and performed their experimental testing.