PL7669B1 - Processing of ores containing antimony, in particular tin ores with antimony content. - Google Patents

Description

As is known, the separation of antimony from ores containing it as an admixture, and more particularly from tin in tin ores containing antimony, is very difficult. Particularly significant difficulties arise if the pipes are pre-calcined with prolonged leaching. The antimony compounds are then converted to antimony tetroxide Sb2 04, which is almost insoluble in acids. Therefore, when calcined by previously known methods of tin ores, contaminated with antimony, and with the subsequent leaching with acids, most of the antimony remained in an undissolved residue, The present invention thus solves the problem of antimony separation, so that the ore is reduced before or during leaching. For example, the ore may be ironed for this purpose with the addition of a reducing substance, e.g. charcoal, and then If you undertake leaching with moderate acids, the residue after leaching will leave a negligible amount of antimony, which will almost completely go into solution. You can also conduct the process differently, i.e. leach the red acid with the addition of oxide salts, e.g. iron, copper and copper salts. other. In this way, it is possible to almost completely remove antimony from the ores. If hydrochloric acid with ferrous sulfate or an acid solution of ferrous chloride is used to leach the ore, then apart from antimony almost completely goes into the solution of copper, bismuth, arsenic and iron, and most of the lead. Processed in this way (The ore process can be reduced in a flare furnace without first chlorinating calcining to remove Cu, Bi, As, Pb and Fe from it. Only with higher amounts of iron, as in the case of a relatively white nickel pyrite. (Arsenkies), it is preferable to apply the oxidative calcination stepwise. Obtaining individual metals from the slurry. The ore is obtained by methods known in the art.

Claims (4)

1. Patent claims. 1. The method of treating ores containing antimony, in particular tin ores containing antimony, is by means of an acid, which means that the ores are reduced before or during acid leaching. 2. The method according to claim 1, characterized by an ore, mixed with a reducing agent, is crushed and then leached. 3. The method according to p. A method according to claim 1, characterized in that the ore is treated with an acid which contains a reducing agent, for example a lava salt. 4. The method according to p. 1 and 3, the significant point that the ore does not need to be subjected to the usual oxidizing or chlorinated calcination, which is to remove other foreign metals, such as Cu, Bi, As, Fe, Pb, Sb. Zinnwerke Wilhelmsburg Gesellschaft mit beschrankter Haftung. Deputy: I. Myszczynski, patent attorney. pavement of L. Boguslawski, Warsaw, and PL PL