Beneficiation chute structure

Abstract

The present invention relates to the technical field of ore separation, and particularly to a beneficiation chute structure. The beneficiation chute structure comprises a chute plate (100), wherein the chute plate (100) has a helical surface (101) helically extending from top to bottom, a first side plate (110) and a second side plate (120) are provided on two sides of the chute plate (100), and a helical trough is defined by the first side plate (110), the second side plate (120) and the helical surface (101); the helical surface (101) has a radial cross section which gradually extends upwardly in a direction from the first side plate (110) to the second side plate (120) and is in the form of a composite curve, and the composite curve comprises at least a first curve segment (102) and a second curve segment (103), an end of the first curve segment (102) extending to the first side plate (110), and an end of the second curve segment (103) extending to the second side plate (120); the first curve segment (102) has an inclination angle of 0° to 3°, and the first curve segment (102) enables the helical trough to form a smooth concentrate channel (104); and the second curve segment (103) has an inclination angle of greater than 10°. In a separation process, as excess ore accumulates, the ore is gradually pushed to the concentrate channel (104) and gradually conveyed downwardly, thereby achieving good separation of ore from gravel, and improving the ore grade and the separation efficiency.

Description

A ore dressing chute structure Technical Field

[0001] The utility model belongs to the technical field of mineral processing equipment, in particular to a mineral processing chute structure. Background Art

[0002] The spiral chute device is one of the simple and effective mineral processing methods. The main structure of the spiral chute is a spiral spiral trough body. The minerals to be processed pass through the spiral trough body under the action of gravity and centrifugal force, so that the mineral particles with different densities form separation belts and are separated.

[0003] For example, a spiral chute device is disclosed in the Chinese patent document with publication number CN214554393U. The spiral chute device is provided with multiple movable components, each of which can move up and down along the column. When the selected mineral at the discharge port at the lower end of the flexible spiral trough body cannot form a clear sorting belt by lateral movement in the flexible spiral trough body, the position of the movable component on the column is adjusted to increase the pitch of the flexible spiral trough body, increase the flow rate of the mineral particles, enhance the centrifugal force, and at the same time, the downward inclination angle changes from small to large, and the gravity effect is enhanced. Under the combined effect of the two, the lateral movement of the selected mineral in the flexible spiral trough body is increased, so that the selected mineral moves laterally in the flexible spiral trough body to form a clear sorting belt, thereby separating various types of selected minerals with different densities.

[0004] For another example, the Chinese patent document with publication number CN217140710U discloses a spiral chute and a mineral processing machine. The spiral chute includes an upper splicing end, a trough surface extending up and down in a spiral shape, and a lower splicing end connected in sequence. The radial cross-section of the trough surface is a sine curve with a high outside and a low inside. The trough surface is used to support the sliding of minerals and mud. The upper splicing end and the lower splicing end are used for the installation of two adjacent spiral chutes. The trough surface has a first edge and a second edge, the first edge is arranged away from the upper splicing end, and the second edge is arranged close to the upper splicing end. The first edge has a first endpoint and a second endpoint, the first endpoint is arranged close to the center of the spiral chute, and the second endpoint is arranged away from the center of the spiral chute. The angle between the line connecting the first endpoint and the second endpoint and the vertical direction is set to a first angle, and the angle of the first angle is set to 80.4°±0.5°. The second edge has a third endpoint, the third endpoint is arranged close to the center of the spiral chute, and the angle between the line connecting the first endpoint and the third endpoint and the vertical direction is set to a second angle, and the angle of the second angle is set to 46°±0.5°. The ore dressing machine sets the spiral chute to extend up and down in a spiral shape, so that the minerals and mud can slide from top to bottom along the spiral extension direction of the spiral chute, so that the minerals and mud can generate centrifugal force during the sliding process. Then, the different gravity of the minerals and mud and the centrifugal force are used to separate the minerals and mud, and finally the separated minerals are recovered.

[0005] In the technical solution disclosed in the aforementioned patent document, the cross-section of the bottom side of the spiral trough is inclined, and the inclination angle is consistent. In the actual mineral processing process, sand and ore will accumulate on the inner side of the spiral trough, resulting in a large amount of sand and gravel mixed with the ore, resulting in low mineral processing accuracy.

[0006] Utility Model Content

[0007] The utility model aims to provide a mineral processing chute structure, which solves the problem that the chute in the prior art causes a lot of sand and gravel to be mixed in the ore, resulting in low mineral processing accuracy.

[0008] To achieve the above-mentioned purpose, an embodiment of the present invention provides a mineral processing chute structure, including a chute plate, the chute plate having a spiral surface extending spirally from top to bottom, and a first side plate and a second side plate are provided on both sides of the chute plate, the first side plate and the second side plate and the spiral surface form a spiral groove; the radial cross-section of the spiral surface gradually extends upward from the first side plate to the second side plate, and presents a compound curve, the compound curve includes at least a first curve segment and a second curve segment, one end of the first curve segment extends to the first side plate, and one end of the second curve segment extends to the second side plate; the inclination angle of the first curve segment is 0° to 3°, and the first curve segment enables the spiral groove to form a smooth concentrate channel; the inclination angle of the second curve segment is greater than 10°.

[0009] Furthermore, the inclination angle of the first curved segment is 0°.

[0010] Furthermore, the second curved segment includes two curved segments with different curvatures, so that the spiral groove forms a mine channel and a sand channel, the mine channel connects the concentrate channel and the sand channel, and the inclination angle of the radial cross section of the mine channel is greater than the inclination angle of the sand channel.

[0011] Furthermore, a plurality of arc-shaped grooves are arranged transversely in the mine tunnel; one end of the arc-shaped groove extends to the side of the concentrate tunnel and is arranged perpendicular to the concentrate tunnel.

[0012] Furthermore, a plurality of drainage grooves are provided on a side of the sand channel closer to the mine channel, and the drainage grooves extend along the extension direction of the sand channel.

[0013] Furthermore, a plurality of water-blocking ribs are provided on the inner side of the second side plate, and the lower ends of the water-blocking ribs extend to the sand channel; the water-blocking ribs are arranged obliquely to the extending direction of the spiral groove.

[0014] Furthermore, multiple groups of drainage components are provided on the side of the sand channel closer to the second side plate. One end of the drainage component closer to the second side plate protrudes upward to form a convex rib, and the other end extends toward the other side of the sand channel and forms a downwardly concave groove on the sand channel. The protruding height of the convex rib gradually decreases and extends to the groove.

[0015] Furthermore, the outer side of the first side panel is an arc mounting surface for mounting on a column; the vertical angle of the arc mounting surface is 2°, and when the arc mounting surface is attached to the column, the second side panel is tilted upward.

[0016] Furthermore, a plurality of positioning posts are extended downward from the bottom side of one end of the chute plate, and a step is extended downward from the upper surface of the other end, and the step is provided with positioning holes matching the positioning posts.

[0017] Furthermore, a positioning rib is provided on the bottom side of one end of the chute plate, and a positioning groove cooperating with the positioning rib is provided at the step position.

[0018] The above one or more technical solutions in the formation fixture provided by the embodiment of the present utility model have at least the following technical effects:

[0019] Mineral raw materials and water enter the spiral trough together, where they flow downward. Centrifugal force exerts its influence on the flow, causing lighter materials like sand, gravel, and soil to drift toward the sand channel and be carried downward along the spiral trough. Heavier materials like ore are transported downward, toward the inner side of the flow channel formed by the second curved segment. Because the concentrate channel is horizontal or nearly horizontal, the majority of the material is concentrated where the second curved segment connects to the concentrate channel. As the speed of the ore and other materials increases, the centrifugal force increases, causing the sand and gravel to drift further outward of the spiral trough. As the ore accumulates, it is gradually pushed inward, onto the concentrate channel, and then transported downward. Therefore, this ore dressing chute effectively separates ore from sand and gravel, improving ore separation accuracy and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0021] FIG1 is a structural diagram of a chute plate of a mineral processing chute structure provided by an embodiment of the present invention.

[0022] FIG2 is a top view of a chute plate of a mineral processing chute structure provided by an embodiment of the present invention.

[0023] FIG3 is a BB cross-sectional view of FIG2 .

[0024] FIG4 is a structural diagram of the assembly of the chute plates of the ore dressing chute structure provided by an embodiment of the present utility model. DETAILED DESCRIPTION

[0025] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0026] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0028] In the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium; internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0029] In one embodiment of a mineral processing chute according to the present invention, referring to Figures 1 to 4 , the chute structure includes a chute plate 100, which can be assembled into a stepped spiral trough structure. Specifically, the chute plate 100 has a spiral surface 101 that spirals downward from top to bottom. A first side plate 110 and a second side plate 120 are disposed on either side of the chute plate 100. The first and second side plates 110, 120, and the spiral surface 101 form a spiral trough. The radial cross-section of the spiral surface 101 extends gradually upward from the first side plate 110 toward the second side plate 120, forming a compound curve. The compound curve includes at least a first curved segment 102 and a second curved segment 103. One end of the first curved segment 102 extends to the first side plate 110, and one end of the second curved segment 102 extends to the second side plate 120. The first curved segment 102 has an inclination angle of 0° to 3°, forming a smooth concentrate channel 104 in the spiral trough. Preferably, the lateral width of the concentrate channel 104 is 40 mm. The inclination angle of the second curved section 103 is greater than 10°.

[0030] In this embodiment, raw materials and water enter the spiral trough together. The ore and water flow downward along the trough, subject to centrifugal force. Lighter materials, such as gravel and soil, drift outward and are transported downward along the trough, while heavier materials, such as ore, are transported downward along the inner side of the flow channel formed by the second curved segment 103. Because the concentrate channel 104 is horizontally or nearly horizontally positioned, the majority of materials are concentrated at the junction of the flow channel formed by the second curved segment 103 and the concentrate channel 104 during transport. As the speed of the ore and other materials increases, the centrifugal force increases, causing the gravel to move further outward of the spiral trough. As the ore accumulates, it gradually pushes inward, onto the concentrate channel, and is transported downward. Therefore, this ore dressing chute effectively separates ore and gravel, improving ore separation accuracy and efficiency.

[0031] Preferably, referring to FIG3 , the first curved segment 102 has an inclination angle of 0°. Therefore, the cross section of the concentrate channel 104 is horizontal. The ore does not enter the concentrate channel 104 due to its own gravity, but rather is moved to the concentrate channel 104 by the mutual squeezing force of the ore accumulated on the sides of the concentrate channel 104. Therefore, the material transported downward on the concentrate channel 104 is high-density ore, thereby improving the beneficiation accuracy and efficiency of the concentrate.

[0032] Furthermore, referring to Figures 1 and 3, the second curved segment 102 comprises two curved segments of different curvatures, forming a ore channel 105 and a sand channel 106 within the spiral trough. The ore channel 105 connects the concentrate channel 104 and the sand channel 106, positioning the ore channel 105 between the two channels. The inclination angle of the radial cross section of the ore channel 105 is greater than that of the sand channel 106. In this embodiment, as the ore and sand material is conveyed downward along the spiral trough, the lighter sand and gravel, under the influence of centrifugal force, drift toward the outer sand channel 106 and are conveyed downward along it, while the denser ore concentrates on the ore channel 105. Because the ore channel 105 has a steeper inclination angle, the denser ore is positioned closer to the concentrate channel 104, enabling separation of ores of varying densities. In addition, the inclination angle of the mine channel 105 is greater than that of the sand channel 106, so the light sand and gravel will encounter less resistance after entering the sand channel 106 and will be easier to screen. Therefore, this embodiment can further improve the accuracy and efficiency of screening.

[0033] 1 and 2 , the mine passage 105 is provided with a plurality of arcuate grooves 107 disposed transversely therein. One end of each arcuate groove 107 extends to the side of the concentrate passage 104 and is disposed perpendicularly thereto. In this embodiment, the ore being transported within the mine passage 105, due to its high density, is located closer to the bottom layer of the mine passage 105. The arcuate grooves 107 act as a barrier to the dense ore, slowing its downward transport along the spiral grooves. Furthermore, the arcuate grooves 107 can divert the ore within the mine passage 105 to the concentrate passage 104.

[0034] 1 and 2 , a plurality of drainage troughs 108 are provided on the side of the sand channel 106 closer to the mine tunnel 105. The drainage troughs 108 extend along the extension direction of the sand channel 106. In this embodiment, the drainage troughs 108 can drain the sand and gravel, allowing the sand and gravel to be transported in the sand channel 106.

[0035] Further, referring to Figures 1 and 2, the inner side of the second side plate 120 is provided with multiple sets of water-blocking ribs 121, the lower ends of which extend to the sand channel 106. The water-blocking ribs 121 are arranged at an angle relative to the direction of extension of the spiral groove. In this embodiment, as the ore material is conveyed downward within the spiral groove, the water-blocking ribs 121 act as a flow blocker, directing the water inward. Furthermore, the water-blocking ribs 121 effectively break up the water, sand, and ore, allowing the mixture to be fully stratified as it is conveyed toward the inner side of the spiral groove.

[0036] Furthermore, referring to Figure 1 , the side of the sand channel 106 closer to the second side plate 120 is further provided with multiple sets of diversion members 130. One end of the diversion member 130 closer to the second side plate 120 protrudes upward to form a rib 131, while the other end extends toward the other side of the sand channel 106, forming a downwardly recessed groove 132 on the sand channel 106. The rib 131 gradually decreases in height as it extends to the groove 132. Specifically, the maximum height of the rib 131 is 1 mm, while the groove 132 has a depth of 0.5 mm and a width of 0.7 mm. In this embodiment, the end of the diversion member 130 closer to the second side plate 120 can block the flow of the mixture, particularly dense ore, while the end closer to the mine channel 105 can divert ore and gravel toward the side of the sand channel 106 closer to the mine channel 105, thereby improving sorting efficiency.

[0037] Further, referring to Figures 1 and 3, the outer side of the first side panel 110 is provided with a circular mounting surface 111 for mounting on a column. The vertical angle of the circular mounting surface 111 is 2°. When the circular mounting surface 111 is attached to the column, the second side panel 120 tilts upward. In this embodiment, the spiral trough is tilted inward as a whole, making it easier for dense ores and other materials to be transported near the inner side of the spiral trough.

[0038] Further, referring to Figure 1 , a plurality of positioning posts 140 extend downward from the bottom side of one end of the chute plate 100, and a step 150 extends downward from the upper surface of the other end. The step 150 is provided with positioning holes 151 that match the positioning posts. In this embodiment, when the chute plates 100 are assembled into a chute, the positioning posts 140 can be assembled into the positioning holes 151, thereby facilitating assembly and disassembly.

[0039] 1 , a positioning rib 141 is further provided on the bottom side of one end of the chute plate 100, and a positioning groove 152 is provided on the step portion 150 to cooperate with the positioning rib 141. This can increase the stability of the chute plate 100 after assembly.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A beneficiation chute structure, comprising a chute plate, characterized in that, The chute plate has a spiral surface that extends spirally from top to bottom. First side plates and second side plates are provided on both sides of the chute plate, and the first side plates, the second side plates and the spiral surface enclose a spiral groove; the radial cross-section of the spiral surface gradually extends upward from the first side plate to the second side plate and is a composite curve, and the composite curve at least includes a first curve segment and a second curve segment. One end of the first curve segment extends to the first side plate, and one end of the second curve segment extends to the second side plate; the inclination angle of the first curve segment is 0° to 3°, and the first curve segment makes the spiral groove form a smooth concentrate channel; the inclination angle of the second curve segment is greater than 10°.

2. The ore dressing chute structure according to claim 1, characterized in that: The inclination angle of the first curve segment is 0°.

3. The ore dressing chute structure according to claim 1, characterized in that: The second curve segment includes two curve segments with different curvatures, so that the spiral groove forms an ore channel and a sand channel. The ore channel connects the concentrate channel and the sand channel, and the inclination angle of the radial cross-section of the ore channel is greater than that of the sand channel.

4. The ore dressing chute structure according to claim 3, wherein: A plurality of arc-shaped grooves arranged horizontally in the ore channel are provided in the ore channel; one end of the arc-shaped groove extends to the side of the concentrate channel and is perpendicular to the concentrate channel.

5. The ore dressing chute structure according to claim 3 or 4, characterized in that: A plurality of drainage grooves are provided on the side of the sand channel closer to the ore channel, and the drainage grooves extend along the extension direction of the sand channel.

6. The beneficiation chute structure according to claim 3, wherein: A plurality of groups of water-blocking ribs are provided on the inner side of the second side plate, and the lower ends of the water-blocking ribs extend to the sand channel; the water-blocking ribs are inclined with respect to the extension direction of the spiral groove.

7. The ore dressing chute structure according to claim 3, characterized in that: A plurality of groups of drainage members are also provided on the side of the sand channel closer to the second side plate. One end of the drainage member closer to the second side plate bulges upward to form a rib, and the other end extends to the other side of the sand channel and forms a downward concave groove on the sand channel. The height of the rib gradually decreases as it extends to the groove.

8. The ore dressing chute structure according to any one of claims 1 to 4, characterized in that: The outer side of the first side plate is an arc-shaped mounting surface for mounting on a column; the vertical included angle of the arc-shaped mounting surface is 2°. When the arc-shaped mounting surface fits on the column, the second side plate is tilted upward.

9. The ore dressing chute structure according to any one of claims 1 to 4, characterized in that: A plurality of positioning columns extend downward from the bottom side of one end of the chute plate, and a step position extends downward from the upper surface of the other end. A positioning hole matching the positioning column is provided in the step position.

10. The ore dressing chute structure according to claim 9, characterized in that: A positioning rib is also provided on the bottom side of one end of the chute plate, and a positioning groove matching the positioning rib is provided in the step position.

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