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Economic disposal of red muds
Experience in disposal of red mud in the
Use of red mud in the production of cement and expanded clay
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according addition AlF3 alumina aluminium fluoride aluminium oxide aluminium smelters amount analysis apparatus arise atmosphere bauxite Bayer process bricks carbon chlorine cleaning compounds concentration containing copper costs cryolite determination dumping dust content dust removal dust-removal plant economic effect effluent effluent gases effluent water electrodes electrolytic electrostatic precipitator environment environmental protection exhaust gas extraction Federal Republic fig.l filter fluidised bed fluorine fume gaseous fluorine Guilini heat heavy metal installed ion-sensitive electrodes ions iron kiln lead limiting values macrosonde material means measurement melting metal smelter method mixture noise Nordenham operation oxygen pollution possible pot room problems production programme quantity red mud reduced referred regards residues reverberatory furnace roasting rotary sampling scrap scrubbing separation sintering slag smelting smelting industry sodium solution specimens suitable sulphuric acid take-up technical technique temperature tion treatment Trigas utilisation VDI Directives waste whilst X-ray zinc