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Author: Smartweigh–Multihead Weighter
A multihead weigher is a kind of equipment for classifying and selecting the net weight of goods. Under the effect of the pneumatic conveying system, the raw materials go through the fan closing, and the feeding bin is at the high-speed operation point on the tray. Under the effect of the centripetal force, the raw materials are sufficiently dispersed and enter the buffer ring. Under the influence of the motor rotor loose flow, after adjusting the leaf ring, slide to the sorting machine of the roughage collector for collection, and then discharge it according to the centrifugal fan. In recent years, the development trend of my country's coal preparation technology is rapid, and the basis for the perfect separation processing technology based on coarse coal heavy medium cyclone dust collector and coal slime flotation reagents.
The development trend is that the heavy medium hurricane is developing towards import substitution, and the slime flotation reagent is developing towards the direction of improving the selectivity of slime. At this stage, large-diameter cyclone dust collectors (1.2m in diameter) with independent patent rights in my country and flotation reagent towers with higher selectivity have been used in the field of mineral processing in my country. However, because the reasonable lower limit of the heavy medium cyclone dust collector and the reasonable limit of the flotation reagent tower, the coarse slime (1.6-0.3 mm) in the middle cannot be separated reasonably, so the coarse slime cannot be separated reasonably. (1.6 to 0.3 mm).
Reduction of feed specification limits for large diameter heavy medium cyclones and small bubble flotation reagent towers. The multihead weigher manufacturers talk about the summary: (1) On the basis of various calculation methods of the random settling velocity, it is proposed to use the Stockton formula to calculate the random settling velocity of the coarse coal slime, and discuss the interference of the settling velocity. Measure the solid model. (2) Coarse slime with different particle sizes affects the separation of the bed The experiment confirmed that the separation technology of the influence bed has an excellent practical effect on the separation of 1.6-0.8 mm coarse slime.
When the particle size is 1.6~0.28mm wide, the actual effect of screening decreases. (3) Raising the water velocity is a key practical independent variable for manipulating the quality and production of clean coal.
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