Critical speed of rotation, N (in rps – rotation per second) of a trammel is equal to (where, g = acceleration due to gravity = 9.81 m/sec2 and, r = radius of trammel, metre.) ?

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Separation of materials of the same density based on their sizes by using then-different rates of flow is called__________________?

A. Sorting B. Sizing C. Flocculation D. Elutriation...

Where the density difference of the two liquid phase to be separated is very small (as in milk cream separator), the most suitable separator is a____________________?

A. Disc bowl centrifuge B. Sharpies super-centrifuge C. Batch basket centrifuge D. Sparkler filter...

Work index is the gross energy (kWh/tonne of feed) necessary to reduce a very large feed to such a size that 80% of product particles will pass through a 0.1 mm screen. The value of work index determined for wet grinding should be multiplied with ______________ to get the same for dry grinding?

A. 1.0 B. 0.5 C. 1.34 D. 4.34...

Which of the following is a fine crusher ?

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Rittinger’s crushing law states that_____________________?

A. Work required to form a particle of any size is proportional to the square of the surface to volume ratio of the product B. Work required to form a particle of a particular size is proportional to the square root of the surface to volume ratio of the product C. Work required in crushing … Rittinger’s crushing law states that_____________________?Read More...