Mechanical Operations Gold ore concentration is mostly done using Froth floatation Tabling Elutriation Jigging Froth floatation Tabling Elutriation Jigging ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations In a ball mill, the volume occupied by the balls (when the mill is stopped) is about __________ percent of the volume of the mill. 85 70 50 35 85 70 50 35 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations A cottrel precipitator makes use of the __________ for dusty air cleaning. None of these Alternating current Corrona discharge Electric spark None of these Alternating current Corrona discharge Electric spark ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Work index is defined as the Gross energy (kWh/ton of feed) needed to reduce very large feed to such a size that 80% of the product passes through a 100 micron screen Energy (kWh/ton of feed) needed to crush small feed to such a size that 80% of the product passes a 200 mesh screen Energy needed to crush one ton of feed to 100 microns Energy needed to crush one tonne of feed to 200 microns Gross energy (kWh/ton of feed) needed to reduce very large feed to such a size that 80% of the product passes through a 100 micron screen Energy (kWh/ton of feed) needed to crush small feed to such a size that 80% of the product passes a 200 mesh screen Energy needed to crush one ton of feed to 100 microns Energy needed to crush one tonne of feed to 200 microns ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations A tube mill compared to a ball mill Has a higher length/diameter ratio Has a higher diameter/length ratio Produces a coarser product Uses much larger balls Has a higher length/diameter ratio Has a higher diameter/length ratio Produces a coarser product Uses much larger balls ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following grinding mills has the horizontally arranged rods as the grinding elements thereby delivering more uniform granular products with minimum fines? Pebble mill Tube mill Rod mill Compartment mill Pebble mill Tube mill Rod mill Compartment mill ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS