Washability curve based on float and sink test enables an assessment to be made of the possibility of cleaning a coal fraction based on the

For efficient grinding, ball mills must be operated

Rittinger's crushing law states that

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. __________ mill is a revolving mill divided into two or more sections by perforated partitions in which preliminary grinding takes place at one end and the finishing grinding at the discharge end.

During size reduction by a jaw crusher, the energy consumed decreases with the

Read More Section(Mechanical Operations)

Each Section contains maximum 100 MCQs question on Mechanical Operations. To get more questions visit other sections.