SU1258484A1 - Hydraulic classifier - Google Patents

Description

one

The invention relates to the field of mineral processing No. 1x, mainly for the hydraulic classification of bulk materials.

The purpose of the invention is to increase the productivity due to the consequent removal of the fines.

FIG. 1 shows a hydraulic classifier diagram; in fig. 2 is a view A of FIG. one .

The hydraulic classifier comprises a body 1, made of separate sections, a feeder 2 with an extension of the classifier by a rectangular inlet opening, receiving hopper 3. Inside each section are installed pouring shelves 4, made in the form of an arc at their attachment to body 1 and having unloading devices 5, across each pouring shelf 4, piping-dividers 6 are horizontally installed, connected to each other by piping 7, valves with a pump 9,

Hydraulic classifier works as follows.

The source material is supplied by the feeder 2 through the loading device and is fed to the pour-off regiments 4. At the same time, water is supplied from the pump 9 through the pipelines 7 to the pipelines-splitters 6.

When the material is dropped along the arc overflow shelf 4, it collides with a perpendicularly directed stream of water coming from the pipelines-dividers 6. A slurry is formed. Large particles, which exceed the speed in the outflow of water, are sent along shelf 4 down to the next section for subsequent classification and are subjected to the action of a jet of water coming from the opposite

rons.

The small particles under the influence of a jet of water are thrown to the arc surface of the shelf and through the discharge devices 5 together with water are removed through the holes, and the coarse fractions, striking the arc surface, are additionally loosened. Particles corresponding to the size of the windows are directed through the discharge devices 5 to the drain, and larger ones due to movement along the arc surface - to the axis of the housing 1, where they are picked up by the water flow, again hit the arc surface of the next section and loosen; some of them leave with a drain, and particles larger than the size of the holes enter the lower sections

As a result of repeated turbulence and repeated braking and acceleration of the flow of pulp, the efficiency of the classification process increases, with each braking or acceleration particles of a certain size are inserted.

In order to equalize the flow parameters and create optimal classification conditions, water is introduced into each section separately, which makes it possible to regulate the classification process in each section and makes the classifier more efficient.

By reducing the path of the material by installing pipelines-dividers 6 opposite the pour-over shelves 4, the productivity of the device is increased and water consumption is reduced. The pipelines-dividers 6 in the classifier case are installed in a checkerboard pattern, which allows changing the direction of the water jets in each subsequent section, as a result of which the classifier capacity is improved.

VNIIPI Order 5058/8 Circulation 514 Subscription

Prod-polygr. pr-tie, Uzhgorod, st. Project, 4

Claims (1)

A HYDRAULIC CLASSIFIER, comprising a casing with loose-filled shelves staggered on its opposite walls, discharge devices, a feeder and a water supply system from pipelines with nozzles, characterized in that, in order to increase productivity by sequentially removing fine fractions, loose-fill shelves in place fastenings to the body are made in the form of a curved surface with holes, under which unloading devices are installed, while the nozzles are made in the form of Katel and installed in front of the shelves and mixing. & No. 1