1. Project overview

Project Name: Laboratory Gypsum Grinding Project of a Technology Co., Ltd. in Dezhou.

Equipment name: Φ300x350mm dry intermittent ball mill

Main technical parameters of the equipment:

Cylinder size: diameter 300mm, length 350mm

Capacity: 10-20kg/time

Cylinder speed: 60.9r/min

Effective volume of cylinder: 0.026 square

Grinding body loading: 42kg

Motor power: 1.1Kw

2. The working principle of the experimental ball mill:

The material enters the cylinder part through the feeding part and the feeding part. The grinding medium (steel ball/ceramic ball) in the cylinder part will generate centrifugal force with the material as the cylinder rotates. When the medium is lifted to a certain height, it will be thrown down according to gravity. The crushed material is discharged out of the machine through the discharge port with the help of the feed and the thrust of the flushing water, so as to complete the whole grinding process.

3. Equipment structure and characteristics:

Φ300x350 batch ball mill is mainly composed of transmission device, cylinder part, frame and so on. The main structural features are:

Cylinder: The steel plate material is not less than the provisions of GB/T700 on Q235-B, and the thickness of the steel plate is 10mm. Circumferential splicing butt welding is not allowed for the steel plates of end caps and stiffeners. The welding seam should be full, uniform and tidy, and the surface quality of the welding seam should meet the requirements of Class I in JC/T532.

Main bearing: The experimental ball mill is supported on two main bearings through the main shaft. The main bearing not only bears the weight and impact of the rotating part of the mill, the grinding body and the material, but also bears the effect of the torque when the mill rotates.

Spindle: The material of the spindle is 45# steel, which plays the role of supporting the cylinder.