Mineral Dressing In Mining — Part 2 MCQs with Explanations

26.76 rev/min is the correct answer to “The diameter of a ball mill is 3 m and the diameter of the balls in the ball mill is 50 cm. What is the critical speed of the ball mill”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

13.5 is the correct answer to “A concentrator pilot plant is fed with 1 tonne of copper ore at ROM grade of 1.5% Cu. Metal recovery in the concentrator pilot plant is 90% and the grade of copper in concentrate is 20%. The amount of copper in concentrate in kg is”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

discharge size is the correct answer to “Set of a Jaw crusher dictates on”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

Coarse and fine particle is the correct answer to “Hydrocyclones are used in ore treatment plant to separate”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

Stokes law is hold good for all particles below 40 μm is the correct answer to “Which of the following statement regarding Stokes law is true”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

Two minerals in one is the correct answer to “Froth flotation is used in ore treatment plant to separate”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

Combination of two is the correct answer to “Magnetic separation is”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

67.5 is the correct answer to “A concentrator pilot plant is fed with 1 tonne of copper ore at ROM grade of 1.5 % Cu. Metal recovery in the concentrator pilot plant is 90% and the grade of copper in concentrate is 20%. The amount of concentrate produced from 1 tonne of ore in kg is”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

154.0 μm is the correct answer to “What will be the value of d50 for the specified overflow of 60% passing 74 m when the value of the multiplier is 2.08”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.

Flotation is the correct answer to “To separate two finely divided solids from one another, the process to be selected is”. This question is standard in competitive examination syllabi for Mineral Dressing In Mining.