NMDC Limited Associate Consultant Interview Questions and Answers

Grinding efficiency is influenced by factors like feed rate, material properties, grinding wheel speed, and coolant usage.

• Feed rate: Higher feed rates can improve efficiency but may lead to increased wear on the grinding wheel.

• Material properties: Harder materials require slower grinding speeds to achieve optimal efficiency.

• Grinding wheel speed: Higher speeds can increase efficiency but may also generate more heat, aff...read more

Grinding media can significantly impact ball mill performance by affecting grinding efficiency and wear rate.

• The type of grinding media used can affect the grinding efficiency of the ball mill.

• Different materials of grinding media have varying wear rates, impacting maintenance costs.

• The size and shape of the grinding media can also influence the grinding process.

• For example, using ceramic balls instead of steel balls c...read more

Slag reactivity can impact cement performance by influencing hydration reactions and strength development.

• Slag reactivity refers to the ability of slag to react with water and form cementitious compounds.

• Higher slag reactivity can lead to faster hydration reactions and improved early strength development.

• However, excessive slag reactivity can also result in rapid setting and reduced workability of the concrete.

• Proper s...read more