Mineral Dressing in Mining MCQs Questions & Answers | Mining Engineering Page-4 section-1

31.
For heavy duty crushing on hard material, the type of jaw crusher normally selected is

A. Blake type double toggle

B. Dodge type

C. Single toggle type

D. None of the above

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32.
How will you quote the size of an irregular particle using a single quantity?

A. length

B. width

C. perimeter

D. equivalent diameter

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33.
This is one of the most common methods often used to presenting the results of sieve analyses performed on material which has been ground to ball mills

A. Log-Log method

B. Rosin-Remmler method

C. Power model

D. Renner and Cohen method

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34.
Normally how many cyclones are arranged in series within the unit of cyclosizer?

A. 3

B. 4

C. 5

D. 9

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35.
If the bond work index for quartz is 13.57 what is the same for graphite?

A. 9.58

B. 19.58

C. 23.56

D. 43.56

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36.
Grinding within a tumbling mill is not influenced by

A. size

B. quantity

C. shape

D. type of motion

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37.
The feed to a flotation plant assays 0.75% Cu. The concentrate produced assays 30% Cu and the tailings 0.2%. Calculate the ratio of concentration?

A. 52

B. 53

C. 54

D. 55

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38.
A slurry stream containing quartz is diverted into one litre density can. The time taken to fill up the can is measured as 5 sec. The pulp density is measured to be 1250 kg/m³. Calculate the mass flow rate of quartz within the slurry. Assuming the density of quartz is 2650kg/m³

A. 228 kg/hr

B. 248 kg/hr

C. 275 kg/hr

D. 288 kg/hr

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39.
The percentage of the mineral occurring as free particles in the ore in relation to the total content is known as

A. degree of freedom

B. degree of bondage

C. degree of liberation

D. degree of integration

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40.
Which of the following rod mill is widely used in mining industry with the principal function is to convert crushing-plant product into ball mill feed introduced through one trunnion and discharges through the other?

A. central peripheral discharge mill

B. end peripheral discharge mill

C. overflow mill

D. hardinge mill

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Mineral Dressing in Mining MCQs Questions & Answers | Mining Engineering

31. For heavy duty crushing on hard material, the type of jaw crusher normally selected is

Answer & Solution

32. How will you quote the size of an irregular particle using a single quantity?

Answer & Solution

33. This is one of the most common methods often used to presenting the results of sieve analyses performed on material which has been ground to ball mills

Answer & Solution

34. Normally how many cyclones are arranged in series within the unit of cyclosizer?

Answer & Solution

35. If the bond work index for quartz is 13.57 what is the same for graphite?

Answer & Solution

36. Grinding within a tumbling mill is not influenced by

Answer & Solution

37. The feed to a flotation plant assays 0.75% Cu. The concentrate produced assays 30% Cu and the tailings 0.2%. Calculate the ratio of concentration?

Answer & Solution

38. A slurry stream containing quartz is diverted into one litre density can. The time taken to fill up the can is measured as 5 sec. The pulp density is measured to be 1250 kg/m3. Calculate the mass flow rate of quartz within the slurry. Assuming the density of quartz is 2650kg/m3

Answer & Solution

39. The percentage of the mineral occurring as free particles in the ore in relation to the total content is known as

Answer & Solution

40. Which of the following rod mill is widely used in mining industry with the principal function is to convert crushing-plant product into ball mill feed introduced through one trunnion and discharges through the other?

Answer & Solution

31.
For heavy duty crushing on hard material, the type of jaw crusher normally selected is

32.
How will you quote the size of an irregular particle using a single quantity?

33.
This is one of the most common methods often used to presenting the results of sieve analyses performed on material which has been ground to ball mills

34.
Normally how many cyclones are arranged in series within the unit of cyclosizer?

35.
If the bond work index for quartz is 13.57 what is the same for graphite?

36.
Grinding within a tumbling mill is not influenced by

37.
The feed to a flotation plant assays 0.75% Cu. The concentrate produced assays 30% Cu and the tailings 0.2%. Calculate the ratio of concentration?

38.
A slurry stream containing quartz is diverted into one litre density can. The time taken to fill up the can is measured as 5 sec. The pulp density is measured to be 1250 kg/m³. Calculate the mass flow rate of quartz within the slurry. Assuming the density of quartz is 2650kg/m³

39.
The percentage of the mineral occurring as free particles in the ore in relation to the total content is known as

40.
Which of the following rod mill is widely used in mining industry with the principal function is to convert crushing-plant product into ball mill feed introduced through one trunnion and discharges through the other?