SU759143A1 - Hydraulic cyclone - Google Patents

Description

Ionoteration refers to the rejection of useful scrap coping. In the enrichment practice, the separation of mineral particles by size and specific gravity in an aqueous medium is carried out in hydraulic and mechanical classifiers, centrifuges and hydrocyclones. Hydrocyclone is a cylindro-conical vessel with a feed nozzle installed directly under the valve tangent to the cylindrical part of the apparatus. Sands (a large product with a high specific gravity of particles) are discharged through the lower sand nozzle, and the drain (particles, smaller ones with a low specific gravity) passes through a drainage nozzle, located in the center of the cover of the apparatus, and then goes outside through the discharge pipe, To obtain a thin discharge product, containing particles with an upper fineness of 20–40 µm, hydrocycloi with a taper angle of 2 (g to a possibly smaller diameter, for example, Vkp, f 75 or 150 b4 are used, and for the I classification of liquefied fine dispersed slurries, glue the hydraulics with the angle KOHyCHQCJrH 10.. „The main parameters of the work of hydrocycloes 75 and 150 M4 are given in the table.

From the table it follows that when domestic production hydrocyclones are used, the minimum size limit of the discharge is 22-28 microns, and in SALA (Sweden) devices it is 15-35 microns. The efficiency of classification in the apparatus of the indicated sizes according to the class of ail ota4Ho size is not great and amounts to, depending on the type of enriched mineral raw materials and the size of the original feed, in the order of 45-65% {1,

At the same time, the practice of enrichment makes it imperative that, at the maximum capacity of the apparatus, it is necessary to isolate a thinner overflow with a particle size of 10–15 µm and lower, with a sufficiently high efficiency, in the course of hydrs diclonirrose.

The closest in technical essence and the achieved result is a hydraulic gyclone, which includes a cylindrical body with a tangential inlet, sand and; drain, vibrating and vibrating devices.

Ultrasonic vibrating frequencies, generated by an annular magnetostrictive emitter, are transmitted to the swirled slurry through the housing wall through the body wall. ;

A disadvantage of the known device is the low efficiency of clasification of fine particles caused by the design itself and the operating parameters of the apparatus, namely, vibrations are superimposed radially (perpendicularly) to the axis of the hydraulic cyclone, using vibrations of the ultrasonic frequency range, i.e. frequencies above 20 kHz, which causes a strong damping of the thickness of the swirled slurry layer, leading to a volume; that vibrations affect the suspension only near the inner cylindrical surface of the body at a distance of no more than 2-3 mm. In the case of the use of vibrations of sound frequencies. (from several tens of Hertz to 1-2 kHz), their physical impact is manifested at a distance of several tens of centimeters. As a result, a noticeable increase in the efficiency of suspension classification,

for example, in the large class of about 10-15 microns, from the effects of vibrations in the ultrasonic frequency range; can take place only in hydrocyclones - dispergatorgos non-excess; go standard size, i.e. in devices with a diameter of at least below 25 mm.

Another disadvantage of the known cptBT is also the low reliability and wear resistance of the apparatus, due to the fact that the thin wall through which the vibrations of the suspension are transmitted does not have the property of a protective abrasive lining. Kaka-feterovka and wall thickening nedopus-g

Tim-J, as she loses the ability to vibrate.

The purpose of the invention is to increase the classification efficiency and reduce the solidity of solid particles released into the discharge.

The goal is achieved by the fact that in the upper part of the body there is an annular groove, provided with elastic pads, between which there is a vibration transmitting device, made in the form of a crest with a drain branch pipe fixed in its center, and a vibrator mounted above the lid.

Fig. 1 shows a flow chart of the installation including a hydrocyclone; in FIG. 2, a general vi hydrocyclone; d in FIG. 3 - hydro-f cyclone block, general view; in fig. 4 shows section A-A in FIG. 3; in fig. 5 — node B in FIG. 3

. The installation consists of a sump sump 1 for the initial suspension pumped by pump 2 with a drive

. (electric motor) 3 gi; foccline

 4.; The guide cyclone is equipped with a vibrator 5 with a vibrating-transceiver mounted in the cylindrical part of the hydraulic chute. A sand pipe 6 is provided for removal of the sludge, and a drain pipe 7 for removing the light fraction (drain) 7. The hydrocyclone is composed of internal 8 and external 9 parts (Fig. 2). The inner part 8 is made of wear material with a low coefficient of friction, for example, polyurethane, and

Step 9 is a metal bag | This is a casing with stiffening ribs 10 and a spanner 11 days of fastening of gisches) a cyclone at the place of installation. The feed of the initial suspension 4 is carried out through the inlet 12 with the feed hole 13, the axis of the socket 12 is directed tangentially cylindrical part

hydrocyclone. The axes of the vibrating screen and the vibro-transmitting device are aligned with the hydrocyclone axis. The electromagnetic type vibrator is in the form of a torus with a core 14 and a ring winding 15, The cover 16 with a glide nozzle 7 is used as a vibro-transmitting device, the edges of the mantles 16 are located. The elastic rings 17 are hollow inside and are made of vacuum rubber. The predetermined oscillation amplitude of the cover 16 is fixed by a metal gasket 18, fixed nsM between flanges 19 for bop joint, Sands are discharged through a flexible pipe 6,

Hydrocyclones can be installed in a block, as shown in FIG. 3 and 4

Claims (2)

The block is made in the form of a casting 20 of polyurethane or other material with a low coefficient of friction. The block in the upper part of the casting 20 is molded with a metal hoop 21. A metal tube 22 is pressed in the axis of the casting 20, to which are inlet pipes 23 of all (six hydrocyclones. The cap 24 is screwed onto the upper end of the tube. 22 device. It consists of a lid 16 constituting one piece with a short pipe 25, the flange of which is attached to a vibrator (not shown in the drawing), from drain fittings 7 screwed onto K1 l11ku to each hydrocyclone, from electric x inner hollow rings 17 to each hydrocyclone, from an elastic hollow inside the xxx pad 26 to the block. The elastic rings 17 and the annular pad 26, made of vacuum-type rubber, can oscillate from the lid 16 when vibrations are applied to it. ring 27, which is connected to the flange of the metal hoop 21, the operation of the hydraulic clamp 0 150 mm and the block of six hydrocyclones j6 75 mm, equipped with a vibrator and a vibrating-transmitting device, is performed as follows. A slurry entering the sump 1 is pumped by a Peskov pump 2 under a pressure of about 1.5 MPa in a hydrocyclo 4 with the vibrator turned on, which vibrates the vibrating generator ycTpcrftcTBO at a frequency within bt several tens to DOO-2000 Hz (figure 1) The vibrations in this case through the caps 16 are transferred suspensions in the direction along the axis of the hydro cyclones (Fig. 2-4). Desulfurized sands exit through the sand holes 6, and the drain is discharged through the vibrating drain pipes 7, the internal diameter of the Sand holes 6 and the drain pipes 7 is adjusted by installing replaceable nozzles and pipes (not shown in the figure). If necessary, by installing interchangeable inserts, it is possible to adjust the size of the feed (inlet) nozzles 12 and 23. also due to the fact that the vibration transmitting device ensures the transmission of vibrations in the audio frequency range. The proposed hydrocycle can be used in technological schemes of enrichment of tin, tungsten-molybdenum, copper-nickel and other ores. For example, desliming with the help of the proposed device | OLOVA ores according to the class of 10–15 µm (instead of immediacy 44 µm at present) will reduce the yield of sludge rf loss of tin with tailings of the beneficiation plant. At the same time, in the process of enrichment, an additional 5-10% RUIN mass can be drawn, directed with long tails. The economic efficiency of equipping the proposed hydrocycpone device is estimated at hundreds of thousands of rubles per year. The claims of the Hydrocyclone, which includes a cylinder-coil body with a tangential inlet, sand and drain nozzles, a vibrator and a vibro-transmitting device, characterized in equipped with elastic pads, between which a vibrotransfer and a device are placed, made in the form of krôika q fixed in its center with a drain pipe, and a vibrator installed over the lid. ; Sources of information taken into consideration during the examination 1. Reference book on ore beneficiation, vol. 1, M., 1972, p. 233, 276. 2. The author's certificate of the USSR 182112, cl. B 01 D 43/00, 2 and O7.64. 3 five I necku figure 2 Pulp From Hdooca Fig.Z A. A Fy 20