Mining gravity concentration equipment

Abstract

The utility model aims to provide mining gravity separation equipment which comprises a central pipe and a plurality of spiral blades, and a material blocking mechanism comprises a plurality of guide partition plate strips arranged on the surface of a spiral slide carriage and around the inner circle of the central pipe in the circumferential direction and a plurality of slide carriage strips arranged on the outer circle of the central pipe in the circumferential direction. A material storage gap is formed between every two adjacent slide carriage strips; the multiple guide partition plate strips are spirally arranged on the surface of the spiral slide carriage from top to bottom. The utility model relates to the technical field of mining equipment, the design of the slide carriage strip on the spiral slide carriage enables separated concentrate to be blocked by the slide carriage strip which rises gradually in the process of moving towards an inner ring, and the concentration effect that the concentrate gathers towards the inner ring is improved. And the gradually-lowered slide carriage strips are rapidly separated from the material storage gaps, so that the separation effect of the concentrate and the tailings is further improved. Due to the design of the arc-shaped surface of the slide carriage strip, a climbing arc-shaped surface is formed when the mixed ore liquid flows out of the slide carriage strip, and the flowing path and the flowing height are increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to mine equipment technical field, concretely is a kind of mine exploitation gravity ore dressing equipment. BACKGROUND

[0002] In the field of mineral processing, spiral separator is an important ore dressing equipment, and its core part is spiral chute. During use, the mineral liquid rotates downward on the spiral chute, and the surface of the chute is provided with a strip-shaped groove or a protruding strip. Under the joint action of inertial centrifugal force and gravity, the mineral liquid contacts the groove or the protruding strip, so that light and heavy minerals are separated on the chute surface. However, this separation method has certain limitations, mainly in that the separation speed is slow. The traditional spiral chute is simple in design, and only relies on the groove or the protruding strip to separate and separate the minerals in the mineral liquid. This design cannot effectively improve the separation efficiency, resulting in that the minerals can only be naturally separated on the long-distance spiral chute according to the centrifugal force. In this process, the separation efficiency of the minerals is low, which seriously affects the ore dressing effect. SUMMARY

[0003] In view of the deficiencies of the prior art, the utility model provides a mine exploitation gravity ore dressing equipment, which solves the problem of low separation efficiency of the spiral chute of the existing spiral separator.

[0004] To achieve the above object, the utility model realizes the following technical scheme: a mine exploitation gravity ore dressing equipment, comprising a central pipe and a plurality of spiral blades, the plurality of spiral blades are installed in a spiral shape from top to bottom around the outer wall of the central pipe, a spiral chute is arranged on the spiral blade, the spiral blade and the spiral chute form a screening cavity for the mineral liquid to flow, a material blocking mechanism is arranged in the screening cavity and on the inner wall surface of the spiral chute;

[0005] The material blocking mechanism comprises a plurality of guide partition strips arranged on the surface of the spiral chute and around the circumferential inner ring of the central pipe, and a plurality of chute strips arranged around the circumferential outer ring, and a material storage gap is formed between adjacent two chute strips.

[0006] A plurality of guide partition strips are arranged in a spiral shape on the surface of the spiral chute from top to bottom; the chute strip is strip-shaped, and is arranged in an array on the surface of the spiral chute with the central pipe as the center.

[0007] Preferably, the cross section of each chute strip is convex, and the height gradually decreases from the inner ring to the outer ring of the spiral chute.

[0008] Preferably, the liquid-approaching surface of the cross section of the chute strip is an arc surface, the liquid-falling surface of the chute strip is a plane, and the top end of the arc surface and the plane is connected by a top plane.

[0009] Preferably, the top end of the arc-shaped surface is lower than the top end of the plane, and the top plane is inclined to connect between the arc-shaped surface and the plane; and the top plane and the arc-shaped surface are smoothly connected.

[0010] Preferably, the bottom of the plane is outwardly inclined, and the bottom of the plane is connected to the surface of the spiral chute through a curved surface.

[0011] Preferably, the chute strip is linear or arc-shaped.

[0012] Preferably, the chute strip is curved to form a curved tail section at the outer ring of the spiral chute.

[0013] Preferably, the spacing of the storage gap at the outer ring is α, and the spacing of the storage gap at the inner ring is β, wherein α>β.

[0014] Preferably, the height of the plurality of guide partitions gradually decreases from the outside to the inside.

[0015] Advantages

[0016] By using the gravity ore dressing equipment for mining, the design of the chute strip on the spiral chute makes the separated concentrate be blocked by the gradually raised chute strip during the movement to the inner ring, thereby increasing the concentration effect of the concentrate gathering to the inner ring. During the movement of the tailings to the outer ring, the tailings rapidly separate from the storage gap through the gradually lowered chute strip, thereby further improving the separation effect of the concentrate and the tailings. The arc-shaped surface design of the chute strip makes the mixed ore liquid form a climbing arc surface when flowing out of the chute strip, thereby increasing the flowing path and the flowing height. The inclined top plane design can increase the flowing path and the flowing height of the ore liquid, so that the concentrate and the tailings in the ore liquid are rapidly separated when passing over the chute strip. After passing over the chute strip, the ore liquid is separated again in the storage gap, thereby improving the separation effect. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 FIG. 1 is a structural schematic diagram of the ore dressing equipment of the present application;

[0018] Figure 2 FIG. 4 is a top view of the spiral chute of the present application;

[0019] Figure 3 FIG. 6 is a structural schematic diagram of the spiral blade and the spiral chute of the present application;

[0020] Figure 4 FIG. 8 is a structural schematic diagram of the cross section of the chute strip of the present application;

[0021] Figure 5 FIG. 10 is a structural schematic diagram of the cross section of the guide partition of the present application.

[0022] Explanation of symbols in the drawings

[0023] 1. Central tube, 2. Spiral blade, 3. Spiral slide, 4. Slide bar, 41. Arc surface, 42. Top plane, 43. Plane, 44. Curved surface, 5. Guide partition bar, 6. Curved tail section, 7. Material storage gap. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Various changes can be made to the implementation scheme as long as the effects of the present invention can be achieved.

[0025] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle described below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly described below.

[0026] Reference Figures 1-5 This implementation plan provides an explanation of the gravity separation equipment used in mining operations.

[0027] Specifically, such as Figure 1 As shown, the mineral processing equipment mainly includes a central pipe 1 and multiple spiral blades 2. The spiral blades 2 are spirally distributed and installed from top to bottom around the outer wall of the central pipe 1. Spiral baffles 3 are provided on the spiral blades 2. The spiral blades 2 and spiral baffles 3 form a screening chamber for the flow of ore liquid. Several openings for receiving concentrate are opened on the central pipe 1. The top and bottom of the spiral baffles 3 are the feed end and the discharge end, respectively. A feed hopper is provided at the feed end, and multiple receiving pipes are provided at the discharge end to receive concentrate, middlings, and tailings, respectively. The concentrate receiving pipe receives the concentrate remaining at the final end.

[0028] Specifically, such as Figure 2 As shown, a material blocking mechanism is provided inside the screening chamber and on the inner wall of the spiral slide 3; the material blocking mechanism includes multiple guide baffles 5 arranged on the surface of the spiral slide 3 and around the central tube 1 in the inner circle, and multiple slides 4 arranged in the outer circle.

[0029] Specifically, multiple guide baffle strips 5 are spirally arranged from top to bottom on the surface of the spiral slide 3; the slide strips 4 are strip-shaped and are arrayed on the surface of the spiral slide 3 with the central tube 1 as the center.

[0030] In one embodiment, the two adjacent chute strips 4 form a storage gap 7, which is a groove space formed by the two adjacent protruding chute strips 4 and the spiral chute 3. The mixed ore liquid is distributed in the storage gap 7 and separated into concentrate and tailings under the action of the flowing centrifugal force. Part of the concentrate is retained in the storage gap 7 when passing through the chute strips 4. The mixed ore liquid that is not separated flows into the next storage gap 7 to continue the separation. The distance between the storage gaps 7 at the outer ring is α, and the distance between the storage gaps 7 at the inner ring is β, where α > β. The separated concentrate moves inward along the wall of the chute strips 4 and converges at the guide partition strip 5 at the inner ring. The tailings move outward along the wall of the chute strips 4 and converge at the tail section of the chute strips 4 at the outer ring.

[0031] In a preferred embodiment, the cross section of each chute strip 4 is protruding, and the height gradually decreases from the inner ring to the outer ring of the spiral chute 3. The separated concentrate is blocked by the gradually increasing chute strips 4 during the inward movement, which increases the concentration effect of the concentrate converging inward. The tailings quickly leave the storage gap 7 during the outward movement through the gradually decreasing chute strips 4, which increases the separation effect of the concentrate and the tailings.

[0032] In this embodiment, the chute strips 4 are straight or arc-shaped. In a conventional case, the chute strips 4 are straight, which is convenient for processing and production and reduces the operation difficulty. In a preferred embodiment, the chute strips 4 are arc-shaped, with the arc surface facing the liquid-approaching direction. This design accelerates the movement rate of the separated concentrate and tailings along the arc surface when they move on the surface of the chute strips 4.

[0033] The liquid-approaching surface of the cross section of the chute strip 4 is an upwardly extending arc surface 41. The liquid-falling surface of the chute strip 4 is a plane 43. The top end of the arc surface 41 is connected to the top end of the plane 43 through a top plane 42. The top end of the arc surface 41 is lower than the top end of the plane 43, so that the top plane 42 is inclined and connected between the arc surface 41 and the plane 43. The top plane 42 smoothly transitions with the arc surface 41. The design of the arc surface 41 forms a climbing arc surface when the mixed ore liquid flows out of the chute strip 4, which increases the flowing path and height. The inclined top plane 42 increases the flowing path and height of the ore liquid, so that the concentrate and tailings in the ore liquid quickly separate when passing through the chute strip 4, and then flow to both sides after being separated again in the storage gap 7.

[0034] The bottom of the plane 43 is outwardly inclined, which enables the ore liquid to flow out relatively stably and prevents turbulence that causes the concentrate to mix with the ore liquid again. The bottom of the plane 43 is connected to the surface of the spiral chute 3 through a curved surface 44.

[0035] As shown in FIG. 1, the spiral chute 3 is composed of a plurality of chute strips 4 and a guide partition strip 5. The chute strips 4 are arranged in a spiral shape and are connected to each other. The guide partition strip 5 is arranged at the inner ring of the spiral chute 3 and is connected to the chute strips 4 at the inner ring. The guide partition strip 5 is a straight strip or an arc-shaped strip. Figure 3As shown, the spiral chute 3 is curved to form a curved tail section 6 at the outer ring of the spiral chute 3, the curved tail section 6 is an outward parabolic arc, and the design can make the tailings need to climb the curved tail section 6 when separating from the chute bar 4, and a small amount of remaining concentrate can be blocked by the arc, and after passing through the chute bar 4, it is separated again in the next storage gap 7, thereby improving the screening effect of the tailings.

[0036] Further, the heights of the plurality of guide partition bars 5 gradually decrease from outside to inside, and the inner ring of the spiral chute 3 is provided with a concentrate opening close to the center tube. The screened concentrate is gathered at the guide partition bar 5 and enters the concentrate opening in turn by passing through the guide partition bar 5.

[0037] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A gravity ore concentration apparatus for use in mining, characterised in that: The device comprises a central pipe (1) and a plurality of spiral blades (2) which are installed in a spiral manner from top to bottom around the outer wall of the central pipe (1), and a spiral chute plate (3) is arranged on the spiral blade (2), the spiral blade (2) and the spiral chute plate (3) form a screening cavity for the flow of ore liquid, and a material blocking mechanism is arranged in the screening cavity and on the inner wall surface of the spiral chute plate (3); The material blocking mechanism comprises a plurality of guide partition strips (5) arranged on the surface of the spiral chute plate (3) and around the inner ring of the central pipe (1) and a plurality of chute strips (4) arranged around the outer ring, and a material storage gap (7) is formed between adjacent two chute strips (4). The plurality of guide partition strips (5) are arranged in a spiral manner from top to bottom on the surface of the spiral chute plate (3); the chute strip (4) is a strip-shaped, and is arranged in an array on the surface of the spiral chute plate (3) with the central pipe (1) as the center.

2. A gravity ore concentration apparatus for use in mining according to claim 1, characterised in that: The cross section of each chute strip (4) is convex, and the height gradually decreases from the inner ring to the outer ring of the spiral chute plate (3).

3. A gravity ore concentration apparatus for use in mining according to claim 1 or 2, characterised in that: The liquid-approaching surface of the cross section of the chute strip (4) is an arc surface (41), the liquid-falling surface of the chute strip (4) is a plane (43), and the top end of the arc surface (41) and the plane (43) are connected through a top plane (42).

4. A gravity ore concentration apparatus for use in mining according to claim 3, characterised in that: The top end of the arc surface (41) is lower than the top end of the plane (43), so that the top plane (42) is inclined and connected between the arc surface (41) and the plane (43); the top plane (42) and the arc surface (41) are smoothly connected.

5. A gravity ore concentration apparatus for use in mining according to claim 4, characterised in that: The bottom of the plane (43) is inclined outward, and the bottom of the plane (43) and the surface of the spiral chute plate (3) are connected through a curved surface (44).

6. A gravity ore concentration apparatus for use in mining according to claim 1 or 2, characterised in that: The chute strip (4) is linear or arc-shaped.

7. A gravity ore concentration apparatus for use in mining according to claim 6 wherein: The chute strip (4) is curved to form a curved tail section (6) at the outer ring of the spiral chute plate (3).

8. A gravity ore concentration apparatus for use in mining according to claim 1, characterised in that: The spacing of the material storage gap (7) at the outer ring is α, and the spacing at the inner ring is β, wherein α>β.

9. A gravity ore concentration apparatus for use in mining according to claim 1, characterised in that: The height of the plurality of guide partition strips (5) gradually decreases from the outside to the inside.

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