Mechanical Operations The value of work index does not change materially from one equipment to another. If the value of work index determined for close circuit grinding is Wi, then the same for open circuit grinding will be 3.34 Wi Wi 1.34 Wi 0.5 Wi 3.34 Wi Wi 1.34 Wi 0.5 Wi ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations What is the selectivity index, if the grade of tailings & concentrate is the same? ∞ 1 0.5 ∞ 1 0.5 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Tabling process used for separating two materials of different densities by passing the dilute pulp over a table/deck, which is inclined from the horizontal surface at an angle of about 5 to 10° 1 to 2° 10 to 15° 2 to 5° 5 to 10° 1 to 2° 10 to 15° 2 to 5° ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Reciprocating screens are normally inclined at an angle of 5° with the horizontal and employ gyratory motion at feed end & reciprocating motion at the discharge end. They are not suitable for the screening of the Heavy tonnages of rocks or gravel Dry chemicals Powdered food & granular materials Light metal powder down upto 4 meshsize Heavy tonnages of rocks or gravel Dry chemicals Powdered food & granular materials Light metal powder down upto 4 meshsize ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Tube mill compared to ball mill Is long in comparison with its diameter All of these Uses smaller balls Produces finer products Is long in comparison with its diameter All of these Uses smaller balls Produces finer products ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Trommels employ __________ for screening of materials. Woven wire screen Punched plate None of these Fibrous cloth Woven wire screen Punched plate None of these Fibrous cloth ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS