LAND FOR PROCESSING TECHNOLOGY and decontamination of waste production and selective recovery of scandium

摘要

The proposed utility model relates to the field of metallurgy, chemical engineering and industrial ecology, in particular to technology areas, offices, repartition for complex processing, neutralization and deactivation of complex multicomponent composition containing waste ferrous, nonferrous, scattered and radioactive metals. The proposed utility model may be implemented to process the selective extraction of scandium compounds formed during neutralization this secondary waste production. The problem is solved with the achievement of the above technical result of the proposed utility model - "Technological portion for processing and decontamination of waste products from the selective extraction of scandium" comprising bath hydroremoval waste melts titanium chlorinators equipped with feeding system therein nitrogen for stirring the resulting slurry gidrootstoynik, a circulation tank having a connection to the tank-dosing solutions of sodium sulfite and barium chloride, filter press-I, connected to a tank -Collection bleached stock solutions, the reactor for the deposition amount of chromium hydroxides, scandium, titanium, zirconium and aluminum, the upper tubes are connected to tanks, feeders sodium hydroxide solution and a high molecular flocculant and the spout forms a connection with a filter-press-II to isolate the precipitate the amount of chromium hydroxides, scandium, titanium, zirconium and aluminum, screw mixer-I, the inlet cone being connected to the trough of the filter press-I, a hopper dust from ore-smelting melting titanium-containing concentrates gidrootstoynika pipe discharge device, and; Output is directed to the second screw mixer-II, connected to the hopper baseline magnesium-containing oxidic materials, tank dosing solution and / or slurry of magnesium chloride and from the shaping unit, the heat treatment and pressing of the composite mixture., characterized in that the output of clarified chloride solution a filter press-II directed to the collecting container, trough a filter press-II has a connection through the discharge hatch repulpatorom-heated reactor equipped with a stirrer and having a nozzle on the top cover coupled via for ornuyu valve to the tank, the dispenser of the alkaline solution of sodium hypochlorite, and the nozzle lower drain-repulpatora reactor has a connection to a vacuum nutsche filter to which is connected feed lines sodium hydroxide solution from the tank to the metering and water, draining the filtrate purified by oksigratnogo precipitate chromate solution of vacuum filter press directed to collection vessel chromate solution, a vacuum nutsche filter has a connection through the discharge device with the charging port of the heated reactor with stirrer, in one of the branch pipes a cover which after shut-off control valves connected to the tank dosing hydrochloric acid, and the other pipe has a feed cone for a feed to the reactor of metallic magnesium, the underflow from the reactor is directed into the collecting container scandium-containing solution is connected to the system sorptive extraction columns filled phosphorus-containing solid extractants or ion exchangers; sorptive extraction columns have connection through the shut-off control valves to tanks for initial wash and regeneration / stripping solutions and collections promvod eluates and / or re-extracts, which are connected to the reactor for recycling eluates / re-extracts and precipitation are scandium compounds, draining the suspension of these solutions are directed to a suction filter-II to yield a solid phase which is directed via unloading and loading device in drying and calcining furnace, and the mother liquor drained - a collecting container.