SU1233961A1 - Pneumatic separator for selecting mica crystals from ore - Google Patents

Description

The invention relates to mining and can be used to select mica crystals from mica-containing ores.

The purpose of the invention is to reduce the loss of mica crystals and the energy intensity of their selection,

The drawing shows the proposed separator.

The pneumatic separator includes a separator drum consisting of four chambers t, 2, 3 and 4 connected in series with each other, a loading device of the conveyor 5 for unloading the finished product, and a conveyor 6 for unloading the waste rock. The separator drum has a rotation drive 7. The sifting chamber 1 has a cylindrical shape with a gummed inner surface and has longitudinally arranged fins on the inner side and a perforation of 20 mm. Its purpose is to prepare the feedstock for separation.

Under the chamber 1 there is a receiver in the form of a tray 8 for directing fine rock of 0-20 mm in size to the conveyor 6.

The depressed chamber 2 of the primary separation of the product may have an outer surface of a cylindrical shape and an inner 14-gon shaped with longitudinal ribs in the corners and a perforation of 7 mm in diameter, the holes are tapered to prevent clogging. Moreover, the diameter of the circle inscribed in the 14-gon is equal to the inner diameter of chamber 1. Under the chamber 2, a receiver is installed in the form of a tray 9 for directing the deposited rock to the conveyor 6.

The secondary separation chamber 4 has the same geometric shape-y as chamber 2, differing from it in a shorter length and perforation diameter of 5 mm. The holes can be made conical. Moreover, the degree of discharge in chamber 4 is higher than in chamber 2.

Between chambers 2 and 4 there is a drum mixer in the form of chamber 3 of active tedding of the raw material, which has the same shape with them, differing in greater height of ribs for better tedding of the raw material and the absence of perforation.

On the outer side of chambers 2 and 3 there are confusors 10 and 11, connected

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with a suction cavity of the fan (not shown).

Discharge regulation in confu, thieves is done with flaps (not 5 shown).

The separator drum, through the rims, rests on the drive rollers 7, two of which are leading.

The actuator support 5, located to on the loading side of the separator, is adjustable in height to change the axis of tilt of the drum. Conveyors 5 and 6 have a common drive 12.

Pneumatic separator for the selection of mica crystals from ore works as follows.

Mica-containing ore with the size of pieces of 0-80 mm is fed to the conveyor 5, from which it is discharged into the chamber 1 with a double-sided dumper.

a separator for separating the fine things of the 0-20 mm class, guided by the chute 8 to the unloading conveyor 6.

 A material of a class of 20-80 mm by a rotating inclined drum is transported to a depression chamber 2, where Depression vacuum crystals are sampled, rock fines 30 of class 7 mm spill onto tray 9 and are removed by conveyor 6.

After the initial mica sampling, the remaining ore enters the drum mixer 3, mixes intensively and is directed to the secondary separation chamber 4. The layer of material becomes thinner due to a decrease in its amount in chamber 2 by the amount of 40 extracted mica crystals. Flat mica crystals have better conditions for contact with the perforated flat surfaces of chamber 4. By unloading in the depression chamber 45 they stick to the flat, its walls and rise up together with the drum.

At the end of the suction zone in the tray, the mica crystals fall onto the transport 50 and 5 are diverted to the tray. The waste rock is poured out of the drum onto the conveyor 6.

The most favorable for depressive sampling is the thickness of the ore layer and 55 the speed of its movement along the drum, and consequently, the separation capacity is regulated by the inclination of the drum axis.

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The zone of active agitating (drum- If we take into account that the camera

non-perforated mixer with a magnification of 4 to 4

valuable longitudinal ribs, charters — by the size of the selected crystals in

after camera 2), introduced into camera 2 and camera 4 has a smaller deconstruction, performs a 5-meter perforation, due to which

If averaging is averaged over the degree of discharge, then the conditions with the smallest energy parameters are the most favorable. costs and feed it into the chamber 4 This reduces the length of the de-final separation from the most compression chamber by the magnitude of the uneven arrangement of the bath mixer 3, which leads to

mica in rock. reduce energy consumption for separation ,.

Claims (2)

1. PNEUMATIC SEPARATOR FOR SELECTING CRYSTALS OF MICA FROM ORE, including an inclined drum with subsequently located screening and depression chambers, a drive for rotating the drum, loading device, unloading * conveyors and receivers of separation products, characterized in that, in order to reduce the loss of mica crystals and energy intensity of their selection, the drum is equipped with a drum mixer and an additional depression chamber, sequentially installed behind the main depression chamber. 2. The separator by π. 1, characterized in that the outer surfaces of the depression chambers are cylindrical. a