SU1176949A1 - Heavy-middle separator - Google Patents

Description

The invention relates to the enrichment of minerals in mineral suspensions, mainly for the separation of the specific weight of coal, shale, ferrous and non-ferrous metal ores, mining and chemical raw materials.

The purpose of the invention is to reduce production costs by reducing the flow of the suspension and the power of the pumps for pumping and regeneration.

, FIG. 1 shows the proposed separator, a general view '; FIG. 2 section A-A in FIG. one.

The 'heavy separator' includes a separating bath 1, on which the mechanism 2 of unloading a light product is installed. To the bottom of the bath is attached obliquely at an angle of 20-80 ° to the horizontal of the discharge pipe 3 of the heavy product, which includes a perforated pipe 4, enclosed in the casing 5, with a hole 6 for the drainage products.

To the bottom of the perforated outlet nozzle 4 there is attached a nozzle 7 of variable cross section, to which the discharger 8 of the sunken product is also attached. Output-, the th section of the nozzle 7 of variable cross-section is equal to the arranged upper limit of the size of the enriched material. At the bottom of the bath 1 is installed sensor 9 level sunk product.

The separator works as follows.

Pre-discharge nozzle 3 heavy product and the nozzle 7 are filled with heavy product to the level controlled by the sensor 9. Then the bath is filled with suspension and at the same time the source material. In the bath 1 is the separation of the material on the light (pop up)

and heavy (sunk) fractions, ι

Floated product using the discharge device 2 is unloaded from the separator. The sunk product falls into the lower part of the bath 1 and enters the outlet nozzle 3 together with a part of the suspension that creates the downward flow, and then goes down to the unloader 8. When passing through the perforated nozzle 4 of the outlet nozzle, the suspension partially discharges and later

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passing the sunken product through the pipe 7, tapering in height, the remaining suspension is squeezed out of the sunken product, which means that it creates a cork from dehydrated. material, ensuring the reliability of unloading material unloader 8 without breakthrough suspension through the nozzle.

This makes it possible to conduct continuous unloading of the sunk product at steady state separation.

Drainage products, falling outside the perforated nozzle 4,

15 are collected in the casing 5 and are constantly output through the opening 6. To monitor the level of the sunk product, a sensor 9 of the level of the sunk product is installed at the bottom of the bath, 20 controlling the performance of the unloader 8, which contributes to the continuous and reliable operation of the separator.

The presence of a lead-out perforated tube 4 inclined to the horizon at an angle of 20-80 ° and a variable cross-section tube 7 tapering to the unloader facilitates the removal of the suspension by gravity from the sunk material, as well as the compaction of the material

3θ which allows to reduce the consumption of the suspension, to abandon the compensating and dewatering device, thereby reducing the energy costs for pumping and regenerating the suspension.

35

40

45

In tab. 1 shows the fractional composition of the original coal, concentrate. (Light product) and waste with a suspension density of 1830 kg / m ³ . Anthracite with a particle size of 13-130 mm is enriched.

In tab. 2 shows the suspension costs per 1 ton of feed at a different angle of inclination of the nozzle 3 and the operating conditions are indicated.

Compared with the known separators in the proposed at equal performance flow suspension

50 2-3 times lower.

When the ratio of the diameters of the nozzles 5 and 7 is more than 10%, compaction of the sunk material occurs, leading

55 to seizure by sinking material of the nozzle 7 of variable cross section. When the ratio of the diameters of the nozzle of variable cross-section, less than 50%,

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there is no necessary compaction of the sunk material in the nozzle 7 of variable cross-section, which leads to a minimum suspension of the suspension through

perforated tube, resulting in the suspension of the suspension through the unloader, and the separator loses its performance.

Table 1

Fraction density, kg / m ³ Output, % source coal concentrate waste -1600 0.9 2.7 1600-1700 17.3 43.8 0.4 1700-1800 14.7 49.5 0.6 1800-1900 2.2 3.4 0.8 1900-2000 2.7 0.5 1.7 +2000 62.2 0.1 96.5

table 2

Tilt angle of discharge pipe, hail Less than 20 20 Suspension flow sy in 1 ton enriched material, m ³ 0.03-0.5 0.5

Working conditions

Heavy material is jammed in the discharge pipe, the separator is inoperable.

Separator

workable

40

0.75

Separator

workable

soben

80

1.5

More

80

The material does not form a plug in the outlet, the separator is not functional

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Nutrition

Light

product

2

Claims (1)

HEAVY-MEDIUM SEPARATOR, including a bath, a pipe to enter the suspension, a device for removing a light product, a discharge perforated pipe of variable cross section for a heavy product , the outlet for the heavy product is set at an angle of 20-80 to the horizons, while the diameter of the discharge part of the outlet is less than the diameter of its dewatering part by 5-10%. ЗЦ ,,,, 1176949 ι 11