SU912292A1 - Three-product hydraulic cyclone - Google Patents

Description

(54) THREE PRODUCTS HYDROCYCLONE

one

The invention relates to the gravitational enrichment of minerals and can be used most widely in the enrichment of fine and finely ground products of fossil raw materials for their density separation.

It is known to use hydrocyclones, combines from cylindrical and conical parts of the working surface, feed and drain nozzles and sand nozzles in the enrichment of mineral resources. As a result, the pulp consisting of two parts, the raw material and the liquid, under the action of considerable centrifugal force is divided by size and otnosti. In this case, the heavy particles of the useful mineral and the coarse grains of the non-useful mineral are thrown to the periphery, and, descending along the wall to the cone vertex, are discharged as a concentrate through a sandy nozzle. Light and small particles that are not able to overcome the resistance of the radial fluid flow are carried by this flow into the central part of the hydro cyclone and, getting into the internal upward flow, are carried through the drain hole beyond the hydro cyclone in the form of drains 1.

A disadvantage in the operation of existing hydrocyclones is the significant clogging of heavy fractions (concentrate) by products of the light fraction, and vice versa, as a result of which a heavy product is usually subjected to repeated treatment in order to

10 to obtain a concentrate with the necessary content of the useful mineral. Another disadvantage in the operation of these hydrocyclones is the lack of effectiveness in the enrichment of fine classes of mineral raw materials. This happens because in order to extract thinner classes in concentrates, an increased pressure is required at the entrance to the hydrocyclone, and this lengthens the internal upward flow formed in the hydrocyclone, bringing its lower boundary to the discharge nozzle. As a result, the density of the natural "bed" rises dramatically.

Claims (2)

The closest in technical essence and the achieved result is the ||) with the products of the 1IH hilro1; the slope containing the cylindrical and conical housing with the supply, drain and Peskovoy nozzles, the sieve with a layer of granular loading 2J. A disadvantage of the known hydrocyclone is the low efficiency of mineral processing. The purpose of the invention is to increase the efficiency of o6oranj, eHHH mineral raw materials by providing a rising sun down stream. The goal is achieved by the fact that the HPD-slope containing a cylindrical body with a power supply, drain and Peskov branch pipes, a sieve with a layer of granular load placed on it, is provided with a cylindrical chamber adjacent to the body sieve with a wash water supply nozzle and a membrane with a drive placed inside the chamber . The essence of the invention lies in the fact that the material after preliminary sedimentation of the working surface of the hydrocyclopex 1o, 1 is subject to centrifugal force under the influence of the ascending and descending fluid flow in the zone of the sieve with a bed where the material is divided by density into heavy, intermediate and light fractions e and subsequent P1, her unloading of copent (heavy fraction) under the penieTo, middling (intermediate) four) without sand pipe and tails (light); drain The drawing is represented by a three-product product. Fopiclone, view. Hydrocycloi contains body 1, discharge pag;) killing () 1, pitacqui nipple 3, “posi: ib 4. sedimentary Hinoe sieve, 5th nipple fi. diaphragm 7, nozzles with bottom 8, m.plppdr:; tank with water pipe: G, windows I), reflector P, cam g;) mon () d 12 and lever 13. 1-hydrocyclone operation is carried out with, l el 1O p I, p m about b ra a 3 o m. 1) L1L | a through the supply nozzle 3 tange1P1ia; LI () is fed to the internal one, 1 ° K0j) 1 of a hydrocyclone under pressure. Hi; The working surface of housing 1, the state of P1. pz of the cylindrical and conical parts, the magnegal, unwinding in a spiral, under the action of centrifugal force, is divided into groups, densities into heavy, intermediate and light fractions. The heaviest, intermediate and coarse grains are dropped to the wall of the body 1 of the hydrocyclone and due to the resulting vertical velocity they move but the working surface is in the "bed 4" zone and is distributed. The movement is spiraling to the hydrocyclone axis, above its surface. The water entering under pressure in the cylindrical tank through the pipe 9, at the expense of the membrane, oscillating. under the action of the cam actuator 12, the lever 13 and the nozzle with the bottom 8, produces evenly over the area a multiple upward and downward effect on the material distributed over the surface of the bed 4. At the same time, the material is divided by density into heavy, intermediate and light particles. The heavy particles are directly on the bed 4, the intermediate particles consisting of intergrowths are above the heavy ones above the upper borders of the windows 10, and the lungs are above the intermediate particles. Under the influence of the downward flow of water, heavy particles, passage through bed 4, sieve 5, membrane 7, nozzles with bottom 8, are discharged from the hydrocyclone as a concentrate. Intermediate particles under the influence of upward-flowing fluid flow, the passage through the windows 10, are discharged from the hydrocyclone as a middling. The impact of an upward flow of fluid promotes the movement of light particles of material up above the intermediate particles and, later, the deflector 11, into the zone of movement of the internal upward flow of fluid, which carries them out of the hydraulic cylinder along the drain pipe 2 in the form of tails. In the zone of the cylindrical working surface of the housing 1, a significant portion of the lighter particles and particles unable to overcome the resistance of the radial fluid flow are carried by this flow into the central part of the hydrocyclone, where an upward fluid flow is formed, spiraling from the reflector 11 to the discharge nozzle 2 and taken out of the hydrocyclone at the indicated port, also in the form of tailings. Reflector 11 helps to drastically reduce the entry of useful minerals into tails with a drain by limiting the transfer of heavy particles and intergrowths when a high-pressure hydrocyclone is operating at the feed inlet 3. technological process, dramatically increases the content of useful mineral in concentrate. The application of the proposed hydrocyclone gives a high economic effect in the enrichment of small and thin classes of mineral raw materials, obtaining a concentrate with a high content of beneficial mineral. Invention A three-product hydrocyclone containing a cylindrical body with feed, drain, and Peskovian nozzles is mounted with a layer of granular load placed on it, differing in that, in order to increase the efficiency of mineral processing by providing upwardly descending flow, it is provided with a cylindrical chamber adjacent to the casing with a flushing water supply nozzle and a drive membrane placed inside the chamber. Sources of information accepted but attention in the examination 1. Akopov M. G. Basics of coal enrichment in hydrocyclones. M .. "Nedra, 1967, p. 135. 2. Copyright certificate. USSR № 713590, cl., 04 C 9/00, .1978.