Which of the following parts of a jaw crusher is subjected to maximum wear and tear during its operation?
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Metallurgical Engineering · all questionsMineral Dressing in Metallurgy
Mineral Dressing in Metallurgy
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Floatation beneficiation is based on the principle of
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Role of a "collector" in floatation is to
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Electrostatic separation of minerals from each other is based on their differences in the following property:
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Cyclones are primarily used for
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Ore concentration by Jigging is based on the . . . . . . . . of the particles.
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The process for selectively separating hydrophobic materials from hydrophilic.
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As particle size is reduced
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Fibrous material is broken by a
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The screen effectiveness . . . . . . . . with increase in the capacity of the screen.
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Screw conveyors are
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A simple close grinding circuit may consist of a
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When the weight of the ball inside a ball mill is just balanced by the centrifugal force, the ball
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Match the reagents in Group 1 with their properties in Group 2, in the context of froth floatation.
| Group 1 | Group 2 |
| P. Frother | 1. Alters the chemical nature of mineral surfaces so that they become hydrophobic due to action of collector |
| Q. Activator | 2. Absorbs on air-water interface and reduces surface tension to stabilise the bubble |
| R. Regulator | 3. Increases the selectivity of floatation by rendering certain mineral hydrophilic |
| S. Depressant | 4. Modifies the action of collector either by intensifying or reducing its water repellant effect |
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Electrical energy consumed by a jaw crusher is not a function of the
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200 mesh screen has 200 openings per
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Bond crushing law
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Match the processes in Group 1 with the physical principales in Group 2.
| Group 1 | Group 2 |
| P. Floatation | 1. Differential initial accelaration |
| Q. Jigging | 2. Differential lateral movement |
| R. Tabling | 3. Differential in density |
| S. Heavy media separation | 4. Modification of surface tension |
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Dry powdery solid materials are transported by a . . . . . . . . Conveyor.
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Activators are those chemicals which help buoying up one mineral in preference to the other in the troth floatation process. Which of the following is an activator?
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