Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
  • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
  • B03B11/00—Feed or discharge devices integral with washing or wet-separating equipment
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
  • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
  • B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
  • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
  • B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
  • B03B5/62—Washing granular, powdered or lumpy materials; Wet separating by hydraulic classifiers, e.g. of launder, tank, spiral or helical chute concentrator type

Definitions

• the invention relates to a device for separating light materials from mineral raw materials, in particular from sand and gravel, with a feed arrangement for the raw material feeders, an inner chamber serving to separate the coarse sand as coarse sand space and with an overflow designed as an inclined surface connected to the coarse sand space , the sorting of the fine sand according to the fluidized bed process outer chamber as a fine sand room and with an overflow assigned to the outer chamber for the light materials, the feed arrangement comprising a feed pipe centered above a baffle arranged centrally in the inner chamber and leaving an outer annular gap free.
• the invention is therefore based on the object of improving a device with the generic features in such a way that larger amounts of water that can get into the separating device can be controlled with the material feed, even suddenly, without the separation effect of the device being impaired.
• the feed pipe has an eccentrically arranged inlet to the tangential inlet of the raw material feeder and has an overflow channel at its end facing away from the impact body and a perforated basket bridging the gap between the end of the feed pipe and the impact body and adjustable in the pipe axis Setting the
• the invention has the advantage that, due to the design of the raw material inlet in the manner of a cyclone, the excess water is separated, including fine or very fine constituents;
• the grain size of the solid particles entering the overflow channel with the excess water can be adjusted via the perforated basket additionally arranged between the end of the feed pipe and the impact body, with the aid of which the flow resistance for the input of raw material can be regulated as a measure of the counterpressure which determines the separation of the cyclone-shaped inlet.
• the overflow channel can either be connected to the fine sand area, which has the advantage that good spreading with a partial relief of the coarse sand area from the fine sand is provided, or the overflow channel can flow directly with the light material be connected so that the excess water, including the mud-like fine constituents, is discharged directly, relieving both the coarse sand and the fine sand space.
• the overflow channel is connected to the fine sand space
• the overflow channel is connected to the end of the inclined overflow surface between the inner chamber and outer chamber facing the coarse sand space.
• a Flushing fine sand into the light material overflow can be provided that between the overflow channel of the feed arrangement and the inclined overflow surface located between the inner chamber and the outer chamber there is a sedimentation area with a trough surface adjacent to the overflow channel and inclined downwards towards the overflow surface as well as with a plurality of obliquely to the trough surface and plates arranged parallel to one another essentially transversely to the flow direction of the overflow, the last plate in the flow direction of the overflow being designed as an overflow with connection to the light material overflow;
• the ends of the individual plates facing the trough surface are each equidistant from the trough surface and the opposite ends of the plates are arranged in a horizontal plane and are enclosed by a housing spaced therefrom.
• the fine sand space and the light material overflow surround the centrally arranged coarse sand space with a feed arrangement in a ring-like manner, while maintaining the symmetrical, circular design of the overall device provided that the overflow ring and sedimentation area with a trough surface are arranged in a circle and the plates are arranged in a radial position and in a circular shape.
• the separating device consists of a cylindrical inner chamber 10 with a feed arrangement 11. At its lower end, the inner chamber 10 has a cone-like tapered trigger area 12 with a controllable trigger 13, which is via a mechanism 14 to be operated; as not shown, 10 lines for the supply of underwater are arranged on the outer circumference of the inner chamber.
• an outer chamber 23 Surrounding the inner chamber 10 at a distance in an annular manner is an outer chamber 23, the inner wall 24 of which surrounds the outer wall 20 of the inner chamber 10 at a distance. This distance between the inner chamber 10 and outer chamber 23 is bridged by an overflow which is designed as an overflow surface 26 inclined towards the outer chamber 23.
• a nozzle body 27 is arranged, which in a manner not shown consists of individual segments, each individual segment of the nozzle base 27 having a discharge member 30 controlled by a mechanism 29 or associated electronics.
• the outer chamber 23 is provided with an inlet 31 for the required underwater.
• At the upper edge of the outer chamber 23 there is an overflow 32 with a trigger 33 for the overflow water and ⁇ ie flushed light materials.
• the feed arrangement 11 consists of a feed tube 15 which is arranged centrally above the inner chamber 10 and which is arranged so as to be longitudinally displaceable.
• a feed pipe 16 is arranged inside the Aufgaoerohres 15, which has an inlet 17 arranged eccentrically to its central axis for tangential winding of ⁇ er raw material feeders.
• a baffle 19 is arranged centrally in the inner chamber 10, which has a wavy surface on the outside in the event of a general outward movement.
• An annular gap 21 remains between the outer wall 20 of the inner chamber and the baffle 19.
• a perforated basket 55 is arranged between the end of the feed pipe 16 and the baffle 19, which is adjustable to set a distance between the perforated basket 55 and the baffle 19 is, with the perforated basket, the flow resistance can be regulated for the raw material feeds emerging from the feed pipe 16.
• the feed pipe 16 which is displaceably arranged in the feed pipe 15, has an extension 40 above the inlet 17, at the end of which an overflow edge 41 forms the overflow into an overflow rim 42;
• a pipe socket 43 is connected to the overflow 42, from which, in the exemplary embodiment shown in FIG. 1, a pipe connection 44 leads to the overflow surface 26 arranged between the inner chamber 10 and the outer chamber 23, while in the exemplary embodiment shown in FIG. 2, a pipe connection 43 leads from the pipe socket 43 45 to the light material overflow 32.
• the raw material feeders are fed in via the inlet 17 formed eccentrically on the feed pipe 16, so that a cyclone effect results in the feed pipe 16 due to the tangential inlet speed; the separating grain size of this cyclone-like feed device is achieved via the adjustable perforated basket 55, because it allows the flow resistance in the inner chamber 10 to be regulated, with this flow resistance the back pressure to the tangential inlet speed of the raw material feeders is generated, from which the separating step 11 results in the area of the feed arrangement .
• the excess water with the solid constituents contained therein flows over the overflow edge 41 into the overflow ring 42 and from here to the two pipe supports 43.
• the grain size in the first direction is the grain size in the first direction.
• the rest of the raw material feeder reaches the impact body 19 via the feed pipe 16 and is distributed over it until it reaches the ring gap 21, where, depending on the flow rate set there, a grain size expansion of the raw material feeder with a grain size between 2 mm and about 0.5 mm results.
• the fluidized bed is generated above the nozzle base 27 arranged in the outer chamber 23, around the organic impurities and the to separate the fine fractions still contained in the fine sands from the fine sands and to separate them therefrom via the overflow 32 with deduction 33.
• the cleaned fine sands are drawn off via the discharge members 30 arranged in individual segments of the nozzle floor 27.
• a line connection 45 is produced between the pipe socket 43 and the lightweight material run 32, which has the consequence that the size of the separating grain in the area of the cyclone-like feed arrangement 11 above the perforated body 55 has to be substantially less than 0.5 mm, because then the excess water is only separated with very fine particles, so that it can be fed directly to the En ⁇ overflow of the separating device.
• the excess water is separated with a fine sand fraction with a grain size ⁇ 0.5 mm in the cyclone-like feed arrangement 11, the overflow of the feed arrangement 11 over the between coarse sand space (inner chamber 10) and fine sand space (outer chamber 23) located overflow surface 26 wiro supplied.
• a sedimentation area is arranged between the overflow gutter 42 of the feed device 11 and the overflow surface 26, in which the excess water is separated from the fine sands.
• an oblique trough surface 47 is arranged between the overflow ring 42 and the overflow surface 26, in the space located above the trough surface 46 and enclosed by a housing 52 is a plurality of inclined to the trough surface ⁇ 6 and essentially transversely to the direction of flow of the separated in the feed arrangement Excess water with Fine sand portion arranged parallel to each other plates 47; the plates 47 are fixed at a distance from one another, the ends of the individual plates 47 facing the trough surface 46 each being at the same distance from the trough surface 46; the opposite ends of the plate 47 end in a horizontal plane, so that there is an increasing length of the individual plates 47 in the flow direction of the overflow to be clarified.
• the overflow channel 42 and the sedimentation area with supporting surface 46 and plates 47 are arranged in a circle, the plates 47 are arranged in a radial position and in a circular shape.
• the excess water with fine sand fraction separated in the feed arrangement 11 flows over the trough surface 46, sedimentation and separation of the excess water with the fine constituents taking place in that the water rises between the individual plates 47, the fine sand components separating from the water or separate the residual sludge and get over the trough surface 46 onto the overflow surface 26 and from here into the fine sand chamber (outer chamber 23); the separated excess water with mud-like fine constituents passes directly into the light material overflow 32 via the overflow edge 50 and via the pipeline 51.

Landscapes

• Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
• Cyclones (AREA)
• Combined Means For Separation Of Solids (AREA)

Applications Claiming Priority (3)

Publications (2)

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ID=7776326

Family Applications (1)

Country Status (9)

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• 1995
  • 1995-11-02 DE DE19540644A patent/DE19540644C1/de not_active Expired - Lifetime
• 1996
  • 1996-10-29 WO PCT/DE1996/002081 patent/WO1997016253A2/fr active IP Right Grant
  • 1996-10-29 US US09/068,216 patent/US6036028A/en not_active Expired - Fee Related
  • 1996-10-29 BR BR9611297-2A patent/BR9611297A/pt not_active Application Discontinuation
  • 1996-10-29 PL PL96326488A patent/PL182389B1/pl unknown
  • 1996-10-29 AU AU17653/97A patent/AU701460B2/en not_active Ceased
  • 1996-10-29 DE DE59602823T patent/DE59602823D1/de not_active Expired - Lifetime
  • 1996-10-29 AT AT96945701T patent/ATE183410T1/de not_active IP Right Cessation
  • 1996-10-29 EP EP96945701A patent/EP0865319B1/fr not_active Expired - Lifetime
  • 1996-11-02 ZA ZA969207A patent/ZA969207B/xx unknown

Non-Patent Citations (1)

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