The trommel screen is a new type of self-cleaning screen. It is widely used for screening all kinds of solid materials, such as stone (granite, cobblestone, basalt, etc.), coal, coke, white ash, compound fertilizer, topsoil, sand, municipal solid waste, aggregates, etc.
The capacity of the trommel screen is closely related to the screen size. If you choose a 2 mm sieve, the output is 12-35 m/h (19.2-56 t/h); its output can reach 175 m/h (280 t/h) with a larger sieve (30 mm), which can meet the requirements of large-scale production.
When the materials are fed into the tilted and rotating barrel, they turn and roll on the screen. Then the qualified materials (undersize product) are discharged through the outlet at the bottom of the rear end of the barrel, while unqualified materials (oversize product) are discharged through the discharging port at the end of the barrel.
The bearing bears the full load of the trommel drum machine. Good lubrication has a great relationship with the bearing life, directly affecting the service life and operation rate of the machine.
The discharge port is often blocked, so it is recommended that its angle should be as perpendicular to the ground as possible and the diameter should be larger to facilitate the discharging of materials.
2 High screening efficiency. The sand lump breaking device in the trommel drum can break up the clumps of sand. The cleaning device installed on the trommel screen can clean up the adhered sand by itself to prevent the mesh plugging.
6 Easy to install, disassemble and transfer. Because the whole equipment is a box-shaped frame structure, only flat ground is required. The high integrity of the equipment is convenient for storage or transfer on the construction site.
The magnetic separation production adopts a two-stage grinding process, in addition to the good screening effect of the trommel screen, which not only reduces the ore sludge caused by the mineral over-grinding and low grinding efficiency, but also increases the output and achieves the required grinding fineness.
Three magnetic separators are adopted for selection. One magnetic separator is used for the first stage, another for rough concentration and the third for concentration in the second stage to achieve the requirement of concentrate grade above 63.
Because the quartz sand is in the form of mineral particles, the mineral powder smaller than the sieve hole will fall during the continuous rolling of the trommel, while the other will be distinguished according to the diameter.
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