Mechanical Operations For spheres, the specific surface shape factor is given by A/V √(AD/V) AD/V D/V A/V √(AD/V) AD/V D/V ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The reduction ratio for fine grinders is 43961 20-40 As high as 100 44124 43961 20-40 As high as 100 44124 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The energy required per unit mass to grind limestone particles of very large size to 100 μm is 12.7 kWh/ton. An estimate (using Bond's law) of the energy to grind the particles from a very large size to 50 μrn is 9.0 kWh/ton 25.4 kWh/ton 6.35 kWh/ton 18 kWh/ton 9.0 kWh/ton 25.4 kWh/ton 6.35 kWh/ton 18 kWh/ton ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The power number for a stirred tank becomes constant at high Reynolds number. In this limit, the variation of power input with impeller rotational speed (N) is proportional to N³ N² N¹ N° N³ N² N¹ N° ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations What is the selectivity index, if the grade of tailings & concentrate is the same? 0.5 1 ∞ 0.5 1 ∞ ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Screw conveyors are Run at very high rpm Suitable for highly abrasive materials Suitable for sticky materials All of these Run at very high rpm Suitable for highly abrasive materials Suitable for sticky materials All of these ANSWER DOWNLOAD EXAMIANS APP
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