Centrifugal separator

 

(57) Abstract:

Use: for the separation of mineral slurry density with the separation of the heavy fraction is the most heavy particles. The invention is: in a centrifugal separator, comprising a cylindrical housing with a tangential feed pipe and fittings for unloading products division, conical part of the housing is filled with immiscible with mineral slurry liquid and is made with a spiral groove on the inner surface for removal of valuable components with the highest platoto. At the bottom of the cone is placed is connected with a screw groove of the storage ring. The cylindrical part of the body is placed on its height reflectors. 1 Il.

The invention relates to a device for the extraction of gold and platinum-containing Sands and can be used in the devices for cleaning of water bodies, as well as in construction and other sectors of the economy.

Known centrifugal separator [1] consisting of a casing, a vertical rotating rotor with the boot slot ring, pipe to supply organic liquid that is not miscible with water, feeder pulp.< the, rich small amount of heavy fraction.

More promising is a centrifugal separator [2] comprising a cylindrical housing with a tangential inlet to feed mineral slurry, devices for discharging light and heavy fractions and performed on the inner surface of the conical part of the screw groove.

A disadvantage of such a separator low separation efficiency.

The objective of the invention to increase the degree of separation of the heavy fraction from the source material through constructive improvements elements of the conical separator.

The task is solved in that the conical part of the device is filled immiscible with mineral slurry liquid and is made with a circular drive valuable components placed in its lower part and is communicated with a spiral groove. The cylindrical portion of the device is made from posted by on its height reflectors, and a tangential inlet for the feed mineral slurry is connected to a cylindrical portion at its lower base.

The drawing shows a schematic diagram of a conical separator.

The separator consists of cylindroconical environment, device for discharging the light fraction in the upper part of the housing 1 and consisting of a pipe 3 with a nozzle 4 devices for discharging heavy fraction 5 on the inner surface of the conical part 6 are longitudinal helical grooves 7, passing into the annular groove 8, fortified in a smaller cross-section of the conical part 6 of the outer surface, and a reflector 9, the installed height of the cylindrical part of the housing 1.

The separator operates as follows.

When washing the gold and the platinum-containing Sands tapered portion 6 is filled with liquid, namachivayam with the working medium (water), such as bromoform, brombenzene or tetrabromoethane to a level consistent with its greater cross-section. In the cylindrical part of the housing 1 through the pipe 2 located tangentially, served source material with the working environment. As the filling of the cylindrical part of the housing 1 mixture of starting material, the working medium is in contact with her reflectors, stimulating the mechanical separation of the heavy fraction with a light. Light fraction (sand, silt), the working medium is discharged through the pipe 3 from the nozzle 4. The heavy fraction is moved down the volume RAB tangential arrangement of the nozzle 2 is supplied a mixture of starting material and the working environment is twisted, reducing the likelihood of accumulation of the light fraction at the interface of the working medium and the fluid, i.e., have a larger cross-section of the cone 6. At the same time twists the liquid from the sinking of the heavy fraction in the cone 6.

Elements heavier fractions may represent a mechanical connection (not dissolved by the working environment) light fraction, alien elements (gravel), the elements of the noble metal, i.e., clumps of material whose density exceeds the density of the liquid in the cone 6. All of this requires additional sorting. Therefore, the heavy fraction, variously, in a certain interval, the density during the rotation of the liquid in the cone 6 is redistributed from the center to the periphery. Longitudinal helical grooves 7 is designed in such a size that provides entry to them sortable elements heavier fractions. The accumulation of sorted elements they are under the influence of gravity is moved along the longitudinal helical grooves in the direction of smaller cross-section of the cone 6 and accumulate in the annular drive 8, where deleted as needed. Unsorted part of the elements of the heavy fraction is collected in the discharge lighting is t to be used in the extraction of gold, when is the washing of sand, as well as in the food industry when sorting tubers.

The original design decision is confirmed by the ease of technical execution, guaranteeing both operational and technological reliability of the separation process of the source material.

The efficiency of the separation of the fractions in the proposed device is determined to improve the quality of sorting, consisting in an additional rotational movement of the elements heavier fractions, which virtually eliminates the influence of the shape of her on the separation process. Since in this case each element of the heavy fraction as the movement in the liquid repeatedly changes its position, the shape of this element does not affect the deposition rate.

CENTRIFUGAL SEPARATOR including a cylindrical housing with a tangential inlet to feed mineral slurry, devices for discharging light and heavy fractions, performed on the inner surface of the conical part of the screw groove, characterized in that the conical part is filled with not miscible with mineral slurry liquid and is made with a circular drive valuable components placed in the reflectors, and a tangential inlet for the feed mineral slurry is connected to a cylindrical portion at its lower base.

 

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The invention relates to a device for continuous separation of suspensions under the action of centrifugal forces and may find application in chemical, petrochemical, mining and other industries

FIELD: separation of solid materials.

SUBSTANCE: device comprises supplying chamber that is in communication with the separator mounted downstream of it and hopper mounted upstream of it and at least one pipe for supplying fusing agent that tangentially enters the chamber. The hopper is connected with the supplying chamber through a column made of interchangeable modules for permitting control of inclination to the vertical. The supplying chamber is made of a trancated cone, and the interchangeable modules are interconnected via flanges.

EFFECT: enhanced efficiency.

2 cl, 3 dwg

FIELD: centrifugal apparatus or machines.

SUBSTANCE: straight-flow cyclone comprises housing provided with the flow rectifier mounted in the top section of the housing, Laval nozzle mounted in the intermediate section , and swirler mounted in the bottom cylindrical section of the housing, openings for discharging solid fractions provided in the converging part of the Laval nozzle, ring chambers that embrace the housing and are used for collecting and discharging light and heavy solid fractions. The cyclone has additional chamber for collecting and discharging slim. The chamber is mounted above the chamber for collecting and discharging light fraction and is open from above. All three chambers are interconnected to define common casing. The chambers for collecting and discharging the heavy and light solid fraction are additionally provided with tangential inlets for controllable supply of fluid, e.g. water. The diverging part of the Laval Nozzle is provided with openings for supplying light fractions and slim from the chamber for collecting heavy fraction back to the main stream. The rows of the openings in the converging and diverging parts are arranged in the planes perpendicular to the central axis of the Laval nozzle. The rectifier is made of cylindrical shell provided with openings arranged along the generatrix, deflecting plate secured to the bottom face of the shell, and is mounted coaxially above the outlet face of the Laval nozzle with a spaced relation of at least 0.1 of the diameter of the outlet face of the Laval nozzle, and is secured to the bottom section of the additional chamber so that the openings of the rectifier are arranged in the ring chamber for collecting and discharging the light fraction .

EFFECT: improved quality of enriching.

2 cl, 2 dwg

FIELD: separating solid materials.

SUBSTANCE: method comprises feeding the raw material to the housing of the apparatus and treating the raw material with heat and ultrasonics. To provide ultrasonic agitation, the raw material is supplied to the housing under pressure that is controlled by means of the inlet nozzle. The diameter of the inlet port of the nozzle is equal to that of the opening for discharging the treated material. The air flow is swirled and saturated with gas or compressed air. The heating is provided by the supply of water vapor to the outlet branch pipe of the apparatus connected with hydrocyclone for subsequent separation and discharging of enriched material.

EFFECT: enhanced efficiency and quality of enrichment.

2 dwg, 2 ex

FIELD: concentration of minerals, in particular, equipment for washing of ores and difficult-to-wash materials including clay component.

SUBSTANCE: hydraulic cyclone-disintegrator for washing of clay-containing materials consists of cylindrical-conical casing, water feeding branch pipe, drain branch pipe, and basic material charging branch pipe. There are replaceable annular blocks positioned in conical part of casing and provided with tangentially arranged injectors. Number and sizes of ejectors may be regulated.

EFFECT: increased efficiency in creating hydraulic cutting mode for disintegrating various types of clay materials.

1 dwg

FIELD: mining.

SUBSTANCE: invention refers to cleaning of mineral grains contained in pulp products at ore concentrating from undesirable sediments such as flotation reagents and sludge coating and can be implemented for mechanical activation of non-ferrous and ferrous metal ores, for coal and other minerals prior to operation of desorption and also prior to operations of selective separation of concentrates, and to cleaner flotation for production of finished concentrates. The method of cleaning mineral grains in ore suspension such as flotation reagents and sludge coating consists in tangential supply of source suspension under pressure into a working zone of the cylinder part of the case via a flow divider arranged so that counter flows collide in the zone of flow compression and deformation; this zone is limited with the interior wall of the cylinder part of the case and with curvilinear exterior part of the splitter installed on a discharge sleeve. The method is implemented by means of the device including a cylinder case with two tangential feeding sleeves arranged at various height, set off along perimeter of the cylinder approximately at 180 and communicating between them by means of the divider supplying source suspension into them; also the device includes a conic part of the case with a sand nozzle located under the cylinder part of the case. The discharge sleeve with the splitter secured thereon is made in form of exterior and interior cylinder surfaces. The interior surface of the splitter has radius r1 calculated from radius R of the cylinder part of the case. The exterior surface of the splitter limiting the zone of flow compression and deformation is made in form of ellipse with half-axes r1 and r2, where radius r2 is bigger, than r1.

EFFECT: increased efficiency of mineral grains cleaning from flotation reagents and sludge coating, also reduction of power consumption.

6 cl, 4 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to mining and may be used in production and survey of minerals. Proposed method exploits transmission mechanism to rotate cone of hydraulic cyclone. Optimum operating conditions of hydraulic cyclone are set by varying cone rotation rpm and direction. Hydraulic mix is fed via tangential inlet of feed branch pipe into cylindrical section for mix to swirl in two flows to subject sold particles to centrifugal forces so that the latter are thrown toward taper section inner surface. Interaction of active and reactive forces in hydrocyclone cone redistributes mix speed and direction. Inner and outer flows separate mineral grains. Heavier grains stay in outer flow to move toward cone tip and be discharged via discharge adapter while lighter grains are discharged in inner flow via discharge branch pipe.

EFFECT: higher quality of separation.

2 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to mineral dressing, particularly, to dressing equipment. Proposed apparatus comprises cylindrical housing, pulp feed branch pipe, pulp light fraction discharge branch pipe and pulp heavy fraction discharge funnel. It is furnished with discharge funnel arranged to produce clearance between its smaller base and light fraction discharge branch pipe base and protective cone secured in discharge funnel with its larger base located with gap relative to discharge funnel smaller base. Discharge funnel larger base is jointed with discharge cone larger base while its smaller base is jointed with aforesaid housing.

EFFECT: higher efficiency of dressing tin ore stale tails.

4 cl, 1 dwg, 1 tbl

FIELD: process engineering.

SUBSTANCE: invention relates to fractional separation of ore suspensions. Proposed complex comprises set of hydrocyclones with distributor, electrically driven pump unit, suction and discharge pulp pipes, coarse ore feed conveyor, ore fine mill, ore sizer, sump, water supply system, hydraulic control valves, and automatic control system. Every hydrocyclone includes tapered cylinder casing with intake at its top communicated with pulp distributor via feed branch pie, cover with drain branch pipe, and sand bed. Mill inlet is connected with coarse ore intake while its outlet is connected with sizer provided with two outlet channels, one of which being connected with sump and another one with mill. Turbine pump is connected via controlled line with discharge pipeline. Hydrocyclone casing cylinder section ID is 3.5-5.0 times larger than drain branch pipe OD. Drain branch pipe cross-section area makes 0.6-1.0 of that of feed branch pipe and is 6-25 times larger than that of sand bed outlet channel.

EFFECT: higher efficiency and quality, power savings.

4 cl, 5 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to ore suspension separation at dressing and metallurgical works. Proposed unit comprises polyhydrocyclone unit with distributor, electrically driven pump unit, suction and discharge pulp pipes, sump, water supply system, two-level ACS. Every hydrocyclone includes tapered cylinder casing with intake at its top communicated with pulp distributor via feed branch pie, cover with drain branch pipe, and sand bed. Hydrocyclone casing cylinder section ID is 3.5-5.0 times larger than drain branch pipe OD. Drain branch pipe cross-section area makes 0.6-1.0 of that of feed branch pipe and is 6-25 times larger than that of sand bed outlet channel at taper angle of casing bottom making 14-18 degrees. Sump is connected with water supply system to allow changing over to pulp wash-out, while turbine pump is communicated with water supply system to allow after-outage rinsing.

EFFECT: higher efficiency and quality, power savings.

6 cl, 5 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to ore suspension separation at dressing and metallurgical works. Proposed unit comprises polyhydrocyclone unit with distributor, electrically driven pump unit, suction and discharge pulp pipes, sump, water supply system, two-level ACS. Every hydrocyclone includes tapered cylinder casing with intake at its top communicated with pulp distributor via feed branch pie, cover with drain branch pipe, and sand bed. Hydrocyclone casing cylinder section ID is 2.7-3.3 times larger than drain branch pipe OD. Drain branch pipe cross-section area makes 1.05-1.75 of that of feed branch pipe and is 3.3-90 times larger than that of sand bed outlet channel at taper angle of casing bottom making 14-18 degrees. Sump is connected with water supply system to allow changing over to pulp wash-out, while turbine pump is communicated with water supply system to allow after-outage rinsing.

EFFECT: higher efficiency and quality, power savings.

6 cl, 4 dwg

FIELD: mining industry; devices for minerals dressing using a method of heavy minerals separation.

SUBSTANCE: the invention is pertinent to mining industry, in particular, to devices for minerals dressing using a method of heavy minerals separation. The heavy minerals cone separator includes a body, a drive, an airlift with a receiving box, a drainage sifter with a drain pan and a rabble. A zone of separation is partitioned from a stagnation zone by a ring-type cleaver-pusher. The cleaver-pusher is fixed on the rabble. The drain pan of the drainage sifter is supplied with a curvilinear launder. The launder is passing along the course of rotation of the rabble into the zone of separation. An internal wall of the body and the ring-type cleaver-pusher form the zone of separation. The diameter of the cleaver-pusher makes 0.2-0.4 of the diameter of the cylindrical part of the body. Depth of its immersing in suspension concerning to the level of overflow makes 0.3-0.5 m. The drainage sifter is displaced relatively to the axis of the rabble rotation and is installed under the receiving box of the outside airlift. The technical result is an increase and stabilization of a density of suspension in the zone of separation.

EFFECT: the invention ensures an increase and stabilization of a density of suspension in the zone of separation.

3 cl, 2 dwg, 1 ex

FIELD: mining engineering; mechanics.

SUBSTANCE: gravity concentrator includes a conical chamber with downward facing cone vertex, a central pulp charging tube, which can rotate in said chamber, a nozzle to supply water into lower part of said chamber, and containers to collect light and heavy fractions of material. Concentrator is equipped with a perforated conveyor worm, which is rigidly connected with said central tube and provides for bottom-up pulp transfer within chamber. Nozzle is positioned coaxially with said central tube to create loosening fluid flow, which passes through splitter and filter in the direction opposite to that of the pulp delivered from said tube.

EFFECT: improved efficiency of valuable heavy fraction extraction, improved concentrator throughput.

2 dwg

FIELD: mining.

SUBSTANCE: invention relates to the field of minerals concentration, in particular concentration of ores and alluvial deposits by means of their wet gravitation separation in flow of pulp that flows along inclined working surface. Separator includes feeder and at least two double-level stages of separation, in each level of which the following components are serially arranged along vertical axis - pulp distributor, working surface in the form of tilted cone-shaped surface, unloading unit with splitter, besides unloading unit comprises outputs of heavy and light fractions, and lower perimetres of working surfaces in levels of all double-level stages of separation are arranged as identical. In each double-level stage of separation perimetre of upper part of working surface of lower level is less than perimetre of upper part of working surface of upper level.

EFFECT: increased efficiency of separation.

3 cl, 2 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to dressing of minerals, in particular, gold bearing sands. Proposed method comprises tangential feed of pulp into top working zone, forming pulp flow swirled crosswise and vortex flows inside chutes over their entire length wherein, at centrifugal forces acting on mineral particles, they are classified to density. Heavy particles are precipitated on inclined bottom of chutes to roll downward to make concentrate while light particles flow off the chute in swirling pump flow in tails. Intercone space is formed by setting limiting cone coaxially with concentrator cone. Said intercone space thickness is adjusted to maintain constant centrifugal force. Additionally, water is fed into intercone space working zone top part to form pulp and water flow swirling crosswise. Proposed apparatus comprises conical concentrator with cone-shaped working chamber with radially narrowing chutes, branch pipe for tangential feed of pulp and separation products unloading means. Said concentrator is furnished with limiting cone arranged coaxially with working chamber with adjustable clearance from chute wall edges. It comprises also water tangential feed branch pipe and pump feed branch pipe arranged at working chamber top section. Tail unloading means represent circular deflector arranged at cone bottom section coaxially with concentrate discharge opening.

EFFECT: higher efficiency of separation.

2 cl, 1 dwg

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