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Metallurgical Engineering Fuels, Furnace And Refractories Technology Difficulty: Medium

Low temperature carbonization

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Match the following: Group 1 Group 2 P. Floatation 1. Separation on the basis of density difference Q. Electrostatic concentration 2. Reduction in size R. Comminution 3. Surface charge is induced in particles S. Heavy media separation 4. Modification of surface tension A common use of ultrasonic testing is Match the materials listed in Group I with the most appropriate applications listed in Group II . Group I Group II P. Iron-silicon alloy 1. Heating element Q. GaAs 2. Ultrasonic generator R. Nichrome 3. Transformer core S. Quartz crystals 4. Light emitting diode In Bayer Process, how much % of the gibbsite is converted into aluminum oxide Match the following blast furnace reactions with the regions where they take place. (Note that the underlined elements are present in the hot metal and the species in the parenthesis belong to slag phase). P. Fe 3 O 4 + CO = 3FeO + CO 2 1. Hearth Q. C + 0.5 O 2 + CO 2. Tuyer R. y . Fe + c = Fe y c 3. Stack S. C + (CaO) + S = (CaS) + CO 4. Bosh