Coarse slime separation diaphragm jig and arrangement mode thereof

Abstract

The invention provides a coarse slime separation diaphragm jig and an arrangement mode thereof. The coarse slime separation diaphragm jig comprises a jigging chamber, a stainless steel sieve plate, anon-discharge artificial bed layer, a partition plate, a raw material feeding port, a light product discharging port, two upper rectangular conical hoppers, two lower rectangular conical hoppers, tworectangular rubber diaphragms, two heavy product discharging ports, two heavy product discharging port valves, two water supply valves, a rack, a speed regulating motor, a cam box, a water inlet pipeline, a washing water pipeline and a top water pipeline. The upper rectangular conical hoppers and the lower rectangular conical hoppers are used, so that the area of a jigging bed layer is enlarged, pulsating water flow generated by the bed layer of the jigging chamber is uniform, the bed layer has no dead angle, the separation efficiency is high, the separation effect is good, the permanent non-discharge artificial bed layer is laid according to different particle sizes and densities, and the separation of coarse slime is facilitated; and the diaphragm jig is wide in particle size and densityrange of separated coarse coal, simple in structure, easy to operate, low in production cost and convenient for large-scale and industrial production and application.

Description

technical field [0001] The invention relates to the technical field of jigs, in particular to a coarse slime separation diaphragm jig and a setting method thereof. Background technique [0002] With the improvement of coal mining mechanization, the output of foamed coal increases, and in the process of coal washing, secondary foamed coal is produced through crushing and other processes. The limitation of jigging washing technology is that it is difficult to recover and lost in coal slime. At present, these slimes are either blended into clean coal for sale, which increases the ash content of the clean coal, and the coal preparation process becomes meaningless; or it is directly transported to power plants for power generation, or stored in the open air or landfilled, which pollutes the atmosphere. and ecological environment, and waste coal resources. [0003] If the existing heavy medium cyclone is used to separate coarse coal slime again, the investment is large, the oper...

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Problems solved by technology

[0002] With the improvement of coal mining mechanization, the output of fine coal increases accordingly. In addition, secondary fine coal is produced through crushing and other processes in the coal washing process. A large number of coarse and clean coal with a particle size of 0.09-2mm is The limitation of jigging washing technology, it is difficult to recycle and lose in the coal slime

At present, these coal slimes are either blended into clean coal for sale, increasing the ash content of clean coal, and the coal preparation process becomes meaningless; or they are directly sent to power plants for power generation, or are piled in the open air or buried on site, which pollutes the atmosphere. and the ecological environment, and a waste of coal resources

[0003] If the existing dense medium cyclone is used to sort coarse coal slime again, the investment is large, the operation and maintenance are complicated, the power consumption is high, the dielectric loss is high, and the production cost is high; TBS type interference bed has a narrow range of sorting particle size, which is suitable for sorting If the particle size is 1-0.25mm (that is, the particle size difference is 4:1), if the equal-sink ratio of the feed material exceeds 4 times (4:1), it will easily cause clean coal leakage and the separation effect will deteriorate

The effect of sorting high-ash coarse coal slime with ash content exceeding 50% is even worse, and it is impossible to sort qualified clean coal below 10% at one time; the spiral separator is suitable for sorting density above 1.6kg / L, below this value The separation effect becomes worse, suitable for separation of low-ash, easy-to-separate coal, and medium-sized coal. For the difficult-to-separate coarse coal slime that recovers more than 50%, the coal separation effect becomes poor, and it is impossible to separate fine coal with ash content below 10% at one time. coal

The processing capacity of a single unit is small, with a maximum diameter of 1.5 meters and a production capacity of 1.5-3 tons per hour, which cannot achieve large-scale and industrial production applications

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