| 摘要 |
A process for the concentration of antimony and tin in the oxide state from the respective ores or by- products, characterised in that, in a single stage, one obtains, by means of air and/or oxygen and carbonaceous material (such as poor-quality coal), a volatilization of the sulphides and/or oxides, followed by oxidation in the gaseous phase of the sulphides to oxides. Antimony and/or tin in metallic form are obtained in the absence of the air and/or oxygen. An apparatus for carrying out the process is a reactor having a frustoconical outline, consisting of a metal casing (2) internally lined by a refractory lining (3), the reactor being rotated about its axis (1), which is arranged vertically, and is equipped with a bottom drain hole (5) so that the solid material charged therein adheres, due to the effect of the several forces in play, to the inner walls of the reactor and the liquid substances which are produced are allowed to flow down through the drain hole. <IMAGE> |
