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     The fine sieve saddle mine in the mid-1980s developed, the full range of a total of four kinds of specifications, mainly used in metal ore processing plant to replace a grinding circuit in the low classification efficiency spiral classifier, it can also be used in other sectors The fine material is subjected to wet classification. The structure and dimensions are shown in Figures 1 and 2. The technical performance and parameters are listed in Table 1.
The working principle of the linear vibrating fine screen is: the exciting force generated by the reverse rotation of the two sets of eccentric vibrators acting on the two sides of the screen box, so that the material is inclined upwardly at a tilt angle of 300 on the screen surface. The material is loosened when thrown up, and the fine material passes through the mesh when it comes into contact with the screen surface, thereby being classified. Since the fine sieve is arranged at a -15 degree inclination parallel to the mill in the beneficiation process, the material on the sieve is raised to a certain height when returning to the ore end of the mill, so as to flow through the return sand chute to the mill. The closed loop is formed for the mine box.
The characteristics of the fine screen are as follows: 1 The self-synchronization principle of double motor drag is used instead of the forced synchronization of the step wheel, so the manufacturing is simple and the maintenance is convenient; 2 using the block eccentric vibrator, the sieve machine can be changed by adjusting the exciting force. Amplitude; 3 uses a non-linear rubber spring, long service life, low noise, smoothness of the screen through the resonance zone; 4 joints between the components of the screen frame are made of ring groove rivets, firm and reliable; 5 high efficiency and low energy consumption.
ZKBX1856 vibrating fine screen has in Angang Qidashan Concentrator, Shougang Dashi Hainan iron ore concentrator concentrator and put into industrial production, reliable screening machine, classification efficiency of 15% to 20% spiral classifier, so that the mill The grinding efficiency is increased by more than 20%, and the water content of the sieve product is decreased by 3.2%, and the mud content is decreased by 15%. At present, the South Mine also produces such fine screens.
   figure 1  figure 2  table