Brief Introduction of Crushing and Screening Equipment

With the continuous progress of the domestic industrialization level, people have higher and higher requirements for the fineness of the intermediate product used in the production of powder, which inevitably requires the use of a crushing and sieving production line.

The crushing and sieving production line, as the name suggests, mainly includes the production line of crushing equipment, grinding equipment, and screening equipment. Its function is to continuously refine small particles and finally make powder that meets the specified fineness.

According to the nature and particle size of the bulk material, select suitable main production equipment, including crushers and grinders, among which jaw crushers, impact crushers, and counter-roll crushers can be selected as the crusher. For larger crushing situations, you can choose to set up two-stage crushing. Generally speaking, jaw crushing is more suitable for coarse crushing and should be set in primary crushing. Counterattack crushing is suitable for medium and fine crushing, and should be set to secondary crushing, so that it can finally meet the requirements of entering the grinding equipment.

Grinding equipment is the core equipment for crushing and sieving production. The more commonly used ones are ball mills, rod mills, vertical mills, etc. The feed particle size of the mill is generally small, about 25mm, according to the ease of grinding of the material Choose the appropriate grinding equipment for performance and output requirements, and the grinding method. Take the ball mill as an example. The grinding methods are divided into dry and wet methods, and the discharge methods are divided into central discharge and peripheral discharge.

The fineness of the material after dry grinding can be well controlled by the classifier. The grid mill is generally used. Its advantage lies in the forced discharging of the material, which helps to increase the output of the mill. The powder classifier can realize online powder selection, and the materials that meet the requirements are directly collected, and the materials that do not meet the standards are re-entered into the ball mill and ground again until they are qualified.

Wet grinding cannot be used for powder selection. Generally, center overflow discharge is used to extend the grinding time of the material in the mill, so that the fineness of the material reaches the standard. Wet grinding has good fluidity due to the effect of water on the material, which is more evenly distributed between the grinding bodies, which is beneficial to increase the output and reduce the noise caused by the collision of the grinding bodies.

After the above main equipment is selected, other connecting equipment, conveying equipment, and storage equipment are determined according to the output of the main equipment.

Henan Zhengzhou Mining Machinery Co., Ltd is a designated manufacturer of building materials and mining machinery in 1956. It has rich project experience in grinding and screening, and has a large number of engineers with practical experience. Welcome to our company for exchanges and visits.