Introduction to High Frequency Screen

High frequency screen is a grill vibrating with high frequency. Putting it on the upper part of the ore chute can prevent crumb or bulk materials that form a large group due to freeze or rust from going into the ore chute, otherwise the large-sized materials will accumulate on the bottom of the ore chute and cause blockage. Due to the vibration of the grill with high frequency, while preventing bulk material from going into the ore chute, crumb and bulk materials with normal granularity can quickly fall into the ore chute and will not accumulate on the grill, and it can also make the caking with modest bonding strength loose and shiver, so that it is the ideal equipment suitable for the upper part of the ore chute. In addition, high frequency screen can also be used for the sand shakeout of the casting. Due to its simple structure and low production cost, it is widely used in such industries as mining, metallurgy, coal, machinery and building material industry.High frequency screen is composed of exciter, pulp distributor, screen frame, rack, hanging spring and screen mesh.

High frequency screen has high efficiency, small amplitude and high screening frequency. Different from the working principle of common screening equipment, high frequency screen uses high frequency, which on the one hand breaks the tension of the ore pulp surface, and on the other hand, the fine particles vibrate with high speed on the screen surface, thus accelerating the separation of big density and useful minerals and increasing the probability that the materials smaller than the separation granularity contact the screen hole. This creates a good separation environment in which the materials smaller than the separation granularity and especially the materials and pulp with big proportion all can go through the screen holes. 

Performance Features of Mineral High Frequency Screen

Mineral high frequency screen is composed of exciter, pulp distributor, screen frame, rack, hanging spring and screen mesh. It has high efficiency, small amplitude and high screening frequency. 

Working Principle

High frequency vibration fine screen is called high frequency screen for short and it is a type of classifying machine used in the ore dressing plant. The gap width of the grating of the screen is different, so that it classifies materials according to the material sizes. In the return circuit of the ore grinding process, this machine is used for the control and classification of the grinding ore product and screen out the coarse particles and the raw materials on the screen and return them to the grinding mill for re-grinding. The fine particles under the screen can be timely discharged to avoid re-grinding and over crushing. Timely screening the materials that reach the fineness requirement can improve the output of the grinding mill, reduce the energy consumption and improve the economic benefits. Installing a high frequency screen in the dressing return circuit can screen the coarse ore concentrate and send it to the grinding mill for re-grinding, and the fine particles under the screen are concentrated to improve the taste of the ore concentrate.