High Frequency Screen

Introduction

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.

High frequency screen has high efficiency, small amplitude and high screening frequency. It is an efficient machine widely used for the wet type and dry type screening, classification and dehydration of all kinds of fine particles such as iron, tin, tungsten, tantalum, niobium sand. When the feeding density and the feeding granularity are proper and the difference of underflow granularity and feeding granularity is smaller than 30%, the screening efficiency can be as high as 70%. The high screening efficiency can greatly reduce the circulating load and the content of qualified particles on the screen, thus improving the processing capacity of the grinding mill.

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.

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.

Performance

High efficiency breaks tension on pulp. So the fine grains vibrate strongly on the surface of screen, and the heavy useful grains separate out. As a result, the fine grains contact with screen frequently. So the fine grains which is smaller than the need fall down from the screen pore and leave the grain we need. 

1. Using laminated mesh increases monolayer aperture, which not only increases the useful life of the screen, but also can prevent jamming and wearing.
2. The rubber spring of high frequency screen supports the screen frame, which can reduce noise and set vibrating.
3. It is low amplitude, which makes for the classification of fine and heavy materials.
4. Strong production capacity, low energy consumption. 

Global Case