Ore sand screening pad

Abstract

The utility model discloses an ore sand screening pad, which comprises a rectangular pad body (1), and is characterized in that a screening region is arranged on the surface of the pad body, the screening region is formed by sequentially arranging a plurality of screening rows, each screening row is formed by connecting a plurality of screening groups side by side, and each screening group comprises two screening units which are symmetrically connected. Each screening unit comprises a G-shaped arc-shaped blocking wall (5), the radian of each blocking wall is gradually reduced from the head to the tail, a circular groove (3) surrounds the inner side of the tail of each blocking wall, the heads of the adjacent blocking walls coincide and are provided with bevels I (6), the bevels I face downwards, the waists of the adjacent blocking walls coincide, side walls (2) are arranged on the left side and the right side of the pad body, and the side walls are higher than the screening units. According to the scheme, slag, mineral grains and mineral powder can be effectively extracted from soil, so that the mineral mining rate is increased, and the technical effects of convenience in use, high interception rate and high efficiency are achieved.

Description

Technical Field

[0001] This utility model relates to the field of mineral screening, specifically a mineral sand screening pad. Background Technology

[0002] As is well known, in the process of mining, in order to improve the mineral extraction rate, it is often necessary to extract as much slag, mineral particles, and mineral powder as possible from the soil, especially for high-value rare minerals. The existing method involves setting up a rectangular water tank and laying a screening mat (also known as a mineral-adhesive mat) in the tank. Mineral-bearing mixed soil is diluted with water and passed through the screening mat. The screening mat is turf-like, with plastic (or rubber) intercepting strips distributed on its surface. These dense intercepting strips intercept mineral sand and powder at the bottom of the water flow, while mud and floating debris such as grass and wood chips are carried away by the water. Finally, the mineral-bearing material within the screening mat is extracted for further refining. However, the existing screening mat technology has the following shortcomings: First, it is difficult to clean. The dense intercepting strips form a complex grass-like structure, making it difficult to completely extract the embedded mineral material and clean it thoroughly. Second, this grass-like screening mat is prone to clogging. The interface directly in contact with the water is quickly filled and blocked by embedded mineral particles, rendering the screening mat ineffective, leading to increased cleaning frequency and reduced efficiency. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a mineral sand screening mat that can effectively extract slag, mineral particles, and mineral powder from soil, thereby improving the mineral extraction rate. It is suitable for collecting precious metal ores and features convenient use, high interception rate, and high efficiency. The technical solution is as follows.

[0004] 1. Pad body, 2. Side wall, 3. Circular groove, 4. Return bay, 5. Baffle wall, 6. Inclined surface I, 7. Inclined surface II, 8. Inclined surface III, 9. Groove.

[0005] A mineral sand screening mat includes a rectangular mat body with screening zones on its surface. Each screening zone consists of several screening rows arranged sequentially, and each screening row consists of several screening groups connected side-by-side. Each screening group includes two symmetrically connected screening units. The mat body has sidewalls on its left and right sides, the height of which exceeds that of the screening units.

[0006] The screening unit includes G-shaped (or spiral) arc-shaped baffles, the curvature of which gradually decreases from the head to the tail, and a circular groove surrounds the inner side of the tail of the baffle. The heads of adjacent baffles overlap to form a combined wall, which has an inclined surface I facing downwards (towards the incoming water). The waists (near the circular groove) of adjacent baffles overlap.

[0007] The width of the wall gradually decreases downwards (in the direction of incoming water).

[0008] The inclined surface I of the wall extends upward (in the direction of water removal) and bulges outward to form a ridge.

[0009] The waists of the adjacent retaining walls overlap, and the upper and lower ends of the overlapping parts are respectively filled with inclined planes III and II to seal the bifurcated gaps.

[0010] The screening rows are arranged in a staggered manner, with adjacent screening rows being staggered.

[0011] The screening unit has a concave inner side of the baffle wall near the head end, forming a sloping groove.

[0012] The surface of the pad is provided with multiple screening sections, each with the same width. The screening unit size of the upper screening section is larger than that of the lower screening section. The thickness of the upper screening section is greater than that of the lower screening section.

[0013] The above-mentioned directional terms "up," "down," "left," and "right" are attached to the following text. Figure 4 Based on this, the bottom indicates the direction of incoming water, and the top indicates the direction of outgoing water. The directional terms are only for the convenience of recording and understanding this technical solution.

[0014] Compared with existing technologies: 1. This mat does not have a grass-like interception net, so the intercepted minerals will not be embedded in corners and crevices, making them easy to remove and collect; 2. This mat is also easier to clean; 3. This mat has higher interception efficiency and a larger interception capacity. Attached Figure Description

[0015] Figure 1 This is a partially enlarged three-dimensional structural schematic diagram of Embodiment 1 of this utility model;

[0016] Figure 2 This is a partially enlarged top view of Embodiment 1 of this utility model;

[0017] Figure 3 This is a schematic diagram of embodiment 1 of the present utility model;

[0018] Figure 4 This is a top view of Embodiment 1 of the present invention.

[0019] Figure 5 This is a partially enlarged three-dimensional structural schematic diagram of Embodiment 2 of this utility model;

[0020] Figure 6 This is a partially enlarged top view of Embodiment 2 of this utility model;

[0021] Figure 7 This is a schematic diagram of embodiment 2 of the present invention.

[0022] Explanation of reference numerals in the attached drawings: 1. Pad, 2. Side wall, 3. Circular groove, 4. Return bay, 5. Baffle wall, 5-1. Large arc wall, 5-2. Small arc wall, 6. Inclined surface I, 7. Inclined surface II, 8. Inclined surface III, 9. Groove. Detailed Implementation

[0023] Example 1, see appendix Figure 1-4 A mineral sand screening mat includes a rectangular mat body 1. The surface of the mat body is provided with screening zones, each screening zone consisting of several screening rows arranged sequentially. Each screening row consists of several screening groups connected side-by-side, and each screening group includes two symmetrically connected screening units. Side walls 2 are provided on the left and right sides of the mat body, with the height of the side walls exceeding that of the screening units.

[0024] The screening unit includes a G-shaped (or spiral) arc-shaped baffle 5, the curvature of which gradually decreases from the head to the tail, and a circular groove 3 surrounds the inner side of the tail of the baffle. The heads of adjacent baffles overlap to form a combined wall, which has an inclined surface I 6 facing downwards. The waists of adjacent baffles overlap.

[0025] The width of the wall gradually decreases downwards after merging.

[0026] The waists of the adjacent baffles overlap, and the upper and lower ends of the overlapping part are respectively filled with inclined planes Ⅲ8 and Ⅱ7 to fill the bifurcated gaps.

[0027] The screening rows are arranged in a staggered manner, with adjacent screening rows being staggered.

[0028] The surface of the pad is provided with multiple screening sections, each with the same width. The screening unit size of the upper screening section is larger than that of the lower screening section. The thickness of the upper screening section is greater than that of the lower screening section.

[0029] The above-mentioned directional terms "up," "down," "left," and "right" are attached to the following text. Figure 4 Based on this, the bottom indicates the direction of incoming water, and the top indicates the direction of outgoing water. The directional terms are only for the convenience of recording and understanding this technical solution.

[0030] Example 1 Usage:

[0031] First, place this mat at the bottom of the sink, making sure the pointed end of the mat points in the direction of the incoming water.

[0032] Then, the mineral-containing mixed soil is diluted with water and flows over the mat. The water trough can be slightly tilted so that the water can flow naturally by gravity. As the water flows over the mat, the heavier mineral slag, particles, and powder in the water will settle and be intercepted by the retaining wall. The lighter mud-water mixture, dead branches and leaves, etc., will be carried away by the water.

[0033] Finally, the pad is removed periodically to collect the intercepted slag, mineral particles, and mineral powder for further purification.

[0034] This embodiment achieves the following technical effects:

[0035] As attached Figure 3 As shown, the baffle wall is G-shaped. The section with a larger curvature at the head of the baffle wall is the large arc wall 5-1, and the section with a smaller curvature at the tail is the small arc wall 5-2. A backflow bay 4 is formed on the inner side of the large arc wall, and a circular groove 3 is formed on the inner side of the small arc wall. When the water flows over this pad, the heavier slag, mineral particles, and mineral powder in the water will settle. When the minerals settle below the baffle wall, they are constrained by the shape of the baffle wall and will flow along the backflow bay on the inner side of the large arc wall into the circular groove (as shown in the attached diagram). Figure 3 As shown by solid line A), the circular trough has a certain space to store mineral powder and particles, allowing the pad to intercept more minerals. The small arc walls act as a water barrier, preventing mineral powder and particles falling into the circular trough from being carried out by the water flow. Minerals in the water that do not settle in the first row will be stirred over and settle in the second, third, and subsequent screening rows. The water will undergo the same sedimentation process in the next screening row until the minerals in the water are basically settled or the circular trough is full. The later the row, the less minerals are collected.

[0036] The waists of adjacent baffles overlap, and the bifurcation gaps are filled with inclined planes III8 and II7 to ensure the unidirectional flow of water and prevent flow turbulence. Similarly, the gaps at the bifurcation points of the converging walls can also be filled with inclined planes. The staggered arrangement of adjacent screening sections can improve the mineral interception rate, as shown in the attached diagram. Figure 3 As shown, C represents the water flow that crosses the inclined plane. This water flow is not introduced into the circular channel by the baffle wall in the front row. It reaches the rear row by crossing inclined planes II and III. After being diverted by the closing wall of the rear row, it enters the circular channel of the rear row.

[0037] This scheme incorporates multiple screening zones, the purpose of which is to achieve graded interception and recovery by sequentially eliminating ores that do not meet the requirements. For example... Figure 4 As shown, the screening units at the front are smaller and denser, while the screening units at the rear are larger and sparser. (1) After the water flows in, it passes through the dense screening units, which can intercept smaller mineral powder and remove larger slag and mineral particles. That is to say, larger slag, mineral particles, and ores that cannot be intercepted will enter the next screening section; (2) medium-sized slag is intercepted in the middle screening section; (3) larger mineral particles are intercepted in the last screening section; (4) ores exceeding the maximum interception limit are removed and enter the next process. Collecting minerals by grade is beneficial for processing them using different methods.

[0038] It should be noted that there are many steps involved in ore refining. This paper aims to remove impurities and classify the minerals. The minerals after classification still need to be further processed and refined.

[0039] In summary, compared with existing technologies: 1. This mat does not have a grass-like interception net, so the intercepted minerals will not be embedded in corners and crevices, making them easy to remove and collect; 2. This mat is also easier to clean; 3. This mat has higher interception efficiency and a larger interception capacity.

[0040] Example 2, see appendix Figure 5-7 A mineral sand screening mat includes a rectangular mat body with screening zones on its surface. Each screening zone consists of several screening rows arranged sequentially, and each screening row consists of several screening groups connected side-by-side. Each screening group includes two symmetrically connected screening units. The mat body has sidewalls on its left and right sides, with the height of the sidewalls exceeding that of the screening units.

[0041] The screening unit includes G-shaped (or spiral) arc-shaped baffles, the curvature of which gradually decreases from the head to the tail, and a circular groove surrounds the inner side of the tail of the baffle. The heads of adjacent baffles overlap to form a combined wall, which has an inclined surface I facing downwards. The waists of adjacent baffles overlap.

[0042] The width of the wall gradually decreases downwards after merging.

[0043] The inclined surface I of the wall extends upward and bulges outward to form a ridge.

[0044] The waists of the adjacent retaining walls overlap, and the upper and lower ends of the overlapping parts are respectively filled with inclined planes III and II to seal the bifurcated gaps.

[0045] The screening rows are arranged in a staggered manner, with adjacent screening rows being staggered.

[0046] The screening unit has a recessed inner side of the baffle wall near the head end, forming a groove 9.

[0047] The surface of the pad is provided with multiple screening sections, each with the same width. The screening unit size of the upper screening section is larger than that of the lower screening section. The thickness of the upper screening section is greater than that of the lower screening section.

[0048] This embodiment achieves the following technical effects:

[0049] 1. Based on Example 1, the inclined surface I of the wall is extended upward and protrudes outward to form a ridge. This structure can fully cut the water flow, so that an equal amount of water flows relatively evenly over each screening unit, and obtain a relatively uniform collection effect; fully cutting the water flow can also reduce the formation of large eddies and avoid large eddies affecting the sedimentation of mineral powder.

[0050] 2. In this embodiment, a groove is provided on the inner side of the head end of the baffle, which can increase the storage space and further improve the interception capacity of the baffle.

Claims

1. A sand screening mat comprising a rectangular mat body (1), characterised in that, The surface of the mat is provided with a screening area, the screening area is composed of a plurality of screening rows arranged in sequence, the screening rows are connected side by side by a plurality of screening groups, the screening group comprises two symmetrically connected screening units, the screening unit comprises an arc-shaped blocking wall (5) in the shape of G, the curvature of the blocking wall gradually decreases from the head to the tail, the inner side of the tail of the blocking wall is surrounded by a circular groove (3), the head of the adjacent blocking wall coincides to form a joint wall, the joint wall is provided with a slope I (6) facing downward, the waist of the adjacent blocking wall coincides, the left and right sides of the mat are provided with side walls (2), and the height of the side wall exceeds that of the screening unit.

2. The ore sand screening mat according to claim 1, characterized in that The width of the joint wall gradually decreases downward.

3. The mineral sand screening mat according to claim 1, characterised in that, The slope I of the joint wall is elongated upward and protrudes outward to form a ridge shape.

4. The mineral sand screening mat of claim 1, wherein, The waist of the adjacent blocking wall coincides, and the upper and lower ends of the coinciding part are respectively filled with the missing gap by the slope III (8) and the slope II (7).

5. The mineral sand screening mat of claim 1, wherein, The screening rows are arranged in a staggered manner.

6. The mineral sand screening mat of claim 1, wherein, The inner side of the head of the blocking wall is concave to form a groove (9).

7. The mineral sand screening mat of claim 1, wherein, The surface of the mat is provided with a plurality of screening areas, the width of each screening area is the same, the size of the screening unit of the upper screening area is greater than that of the lower screening area.

8. The ore sand screening mat of claim 7, characterized in that, The thickness of the upper screening area is greater than that of the lower screening area.

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