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Method of collisional plasma ionization of raw material comprises ionization upon collision with molten plasma produced by an arc melting of working mixture, where to the plasma surface raw material is directed in narrow-channel beam with a divergence in the range from 5 ° to 8 °. As raw material water is used, or an aqueous suspension. For formation of plasma working mixture is used, consisting of at least one low-melting substance and powdered carbides and crystalline hydrates.