Bauxite leaching process, improves filterable precipitate leach

摘要

1.method of processing u0431u043eu043au0441u0438u0442u0430 leaching, usually under bayer method, u043fu043eu0437u0432u043eu043bu00a0u044eu0449u0438u0439 get u0430u043bu044eu043cu0438u043du0438u00a0 hydroxide, u043eu0442u043bu0438u0447u0430u044eu0449u0438u0439u0441u00a0, bauxite u0432u0432u043eu0434u00a0u0442 cracked directly in alkaline solution (21a) allocated in advance and designed u0434u043bu00a0 re issuance of u0431u0430u0439u0435u0440u043eu0432u0441u043au0443u044e scheme solution u0430u043bu044eu043cu0438u043du0430u0442u0430 (20), and the s u0435u043bu043eu0447u043du043eu0439 solution (21a) u0434u043eu0432u043eu0434u00a0u0442 to such a temperature.after u043fu0440u0438u0432u0435u0434u0435u043du0438u00a0 u0432u0437u0430u0438u043cu043eu0434u0435u0439u0441u0442u0432u0438u00a0 the crushed u0431u043eu043au0441u0438u0442u0430 alkali solution and the temperature of the suspension obtained from the u0441u043cu0435u0448u0435u043du0438u00a0, above the u043fu0435u0440u0430u0442u0443u0440u044b, is close to the temperature u043au0438u043fu0435u043du0438u00a0 at atmospheric pressure, usually above 95C.;2. method of processing u0431u043eu043au0441u0438u0442u0430 on 1, in which the alkaline solution u0434u043eu0432u043eu0434u00a0u0442 to such a temperature that the crushed after u0432u0437u0430u0438u043cu043eu0434u0435u0439u0441u0442u0432u0438u00a0 u0431u043eu043au0441u0438u0442u0430 and decree x of lye temperature suspension obtained from this u0441u043cu0435u0448u0438u0432u0430u043du0438u00a0 above or equal to the temperature u043au0438u043fu0435u043du0438u00a0 at atmospheric pressure.;3. method of processing u0431u043eu043au0441u0438u0442u0430 on 1, in which the u0434u0440u043eu0431u00a0u0442 bauxite in the presence of u0430u043bu0438u043au0432u043eu0442u044b, u0441u043eu0441u0442u0430u0432u043bu00a0u044eu0449u0435u0433u043e less than 15%, preferably less than 10% solution u0432u044bu0449u0435u043bu0430u0447u0438u0432u0430u043du0438u00a0.;4. method of processing u0431u043eu043au0441u0438u0442u0430 on 1, in which the pre heated to the temperature of cracked bauxite, is close to the temperature, which brought the alkaline solution.;5. method of processing u0431u043eu043au0441u0438u0442u0430 on 1, in which the bauxite are by wet u0434u0440u043eu0431u043bu0435u043du0438u00a0 at temperatures above 95C.;6. method of processing u0431u043eu043au0441u0438u0442u0430 on 1, in which the alkaline solution u00a0u0432u043bu00a0u0435u0442u0441u00a0 u0430u043bu0438u043au0432u043eu0442u043eu0439 solution u0432u044bu0449u0435u043bu0430u0447u0438u0432u0430u043du0438u00a0 not exceeding 25%, preferably 20% of bec ka.;7. method of processing u0431u043eu043au0441u0438u0442u0430 on 1, in which the alkaline solution u00a0u0432u043bu00a0u0435u0442u0441u00a0 u0430u043bu0438u043au0432u043eu0442u043eu0439 u043eu0441u0432u0435u0442u043bu0435u043du043du043eu0433u043e u043fu0440u043eu043cu044bu0432u0430u0442u0435u043bu00a0 solution with an insoluble residue, usually u043eu0441u0432u0435u0442 solution the first u043fu0440u043eu043cu044bu0432u0430u0442u0435u043bu00a0 sector.;8. method of processing u0431u043eu043au0441u0438u0442u0430 on any of the u043fu043f.1 - 7, which are u043eu0431u0435u0441u043au0440u0435u043cu043du0435u043du043du0443u044e slurry separation "u0442u0432u0435u0440u0434u0430u00a0 liquid phase and liquid re u0432u0432u043eu0434u00a0u0442 in cs u0442u0440u043eu0439u0441u0442u0432u043e u043eu0431u0435u0441u043au0440u0435u043cu043du0438u0432u0430u043du0438u00a0 and solid phase u043fu0440u043eu0432u043eu0434u00a0u0442 to, and then pump into the device u0432u044bu0449u0435u043bu0430u0447u0438u0432u0430u043du0438u00a0.