Limestone Pulverizing Process Flow

Limestone grinding process mainly includes two types:

Open Circuit Process: the process in which materials pass through the mill once and then proceed to the next step as finished products;

Closed Circuit Process: when the materials are sorted in one or more stages after being discharged from the mill, the fine particles are used as finished products, and the coarse particles are returned to the mill for re grinding.

The open circuit process is relatively simple, with the advantages of less equipment, less investment and simple operation. However, because all materials need to meet the fineness requirements before they can be grinded, over grinding is easy to occur, and the grinded materials are easy to form a buffer cushion, which hinders the further grinding of coarse materials, greatly reduces the grinding efficiency and increases power consumption.

Therefore, at present, most limestone powder manufacturers choose Closed-circuit Process, which can reduce over grinding, improve mill efficiency and reduce energy consumption. In addition, the limestone powder produced by closed-circuit process has uniform particle size and is easy to adjust, which can meet the requirements of different fineness.

Example Of Closed Circuit Production Of Limestone Powder Raymond Mill