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Metallurgical Engineering Extractive Metallurgy Difficulty: Medium

Percentage of copper present in concentrated copper sulphide ore is

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A steel plate of 10 mm thickness is to be cold rolled. The mill has rolls of diameter 72 mm. If the co-efficient of friction μ = 0.3 the maximum possible thickness reduction in the first pass will approximately be . . . . . . . . %. If a multicomponent heterogeneous system at thermodynamic equilibrium, identify the option that need not be true. For complete analysis of iron ore, the size of the dried sample should be Match those listed in Group 1 with the NDT methods listed in Group 2 . Group 1 Group 2 P. Penetrameter 1. Ultrasonic test Q. Differential coil probe 2. Dye-penetrant test R. Piezo-electric probe 3. X-ray radiography S. Developer 4. Accoustic emission test Brazing fillermetal used for joining steel plates