Conical high frequency vibrating fine screen

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1. Structure and classification process The experimental cone-type high-frequency vibration fine screen consists of a box, an excitation part and a base. Its main technical performance is as follows:
Screen area 2 × 18m 2
Screen size 0.15mm upper layer, 0.2mm lower layer
Screen cone angle 17 degrees vibration times 2850 times / min
Full amplitude 0.0~0.03mm
Motor power 2×1.1kW
Dimensions (height × diameter) 1.8 × 1.5m
The following figure shows the structure of the cone-shaped fine sieve. The principle of sorting is as follows: the mineral or slurry passes through the feed bin 1 and enters the sorting disc. Due to the vibration force and gravity, the material moves along the curve on the screen surface 3. The fine material in the mineral or slurry enters the fine silo through the sieve hole, and is discharged from the sieve discharge 5 as the material is continuously sieved. The cone sieve has two sieve faces, and the first layer is not The sieved material which has been sieved out is further sifted in the second layer after being overturned, and the size of the second sieve is slightly larger than the size of the first sieve, which enables the critical particles to be fully permeable through the sieve. The fine material and the large-sized material that have not been dialyzed enter the outer ring conveying tank, and are discharged from the discharge opening 4 to become a sieve.
The ore sample used in the test is Donganshan hematite, cement building sand and other minerals, the use of double screen, a first layer of a mesh size of 0.15 mm, the second layer is a mesh size of 0.2mm, the limits for the classification 0.15mm, woven mesh of brass.
2. Screening efficiency test results
Due to the higher vibration times, the material can be better layered and loosened on the sieve surface, and the screening efficiency is higher, generally greater than 80%.
The ore size and the screening efficiency are approximately in a straight line relationship, and the amount larger than the separation particle size in the ore supply should be 30 to 40%.
The concentration of the ore should be 30-40%.
The ore amount and the screening efficiency are approximately linear, and 3~4t/m 2 •h is suitable.
Through research and development, it is believed that the cone type sieve machine can be used in the selection plant to carry out one-stage or two-stage classification with the mill. [next]

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