High-fraction coarse sand and fine sand shaking table

Abstract

The utility model relates to a high-fraction coarse sand and fine sand shaking table, which comprises a shaking table head, a table surface, a sliding seat and a motor, the table surface is supported on the sliding seat and is driven by the shaking table head to reciprocate, the shaking table head is driven by the motor, an ore feeding groove and a water feeding groove are arranged on one side of the table surface, reciprocating strips are distributed on the table surface, and the coarse sand table surface is divided into seven areas GFEDCBA from the table head end to the concentrate end. The gradient from the rough selection area G to the fine selection area A is set to be three-slope four-flat from low to high, the area A, the area C and the area G are triangular planes, the other separation areas are parallelogram slopes, the reciprocating strips are distributed in parallel from the area G to the area A and sharp out at the boundary of the area A, the cross section of each reciprocating strip is in a horizontal trapezoid shape, the lower bottom and the upper bottom of each reciprocating strip are both perpendicular to the bed surface, and the flat edge of each reciprocating strip is connected with the bed surface. The upper edge is inclined, an additional strip is additionally arranged at the high end, the low end is steeped, a gap between adjacent reciprocating strips is an inter-strip groove, and the additional strip is sharp out at the boundary line of the G area and the F area; and the reset strip is provided with a sharp groove from the boundary line of the D region and the C region until the A region is sharp out.

Description

TECHNICAL FIELD

[0001] The utility model discloses a high proportion coarse sand and fine sand shaking table belongs to gravity ore dressing equipment field. BACKGROUND

[0002] The shaking table is used for separating light and heavy minerals according to the density difference, the sinking speed difference in water and the friction, and mainly used for the ore dressing of nonferrous metal minerals such as tin and tungsten, and can also be used for the separation of other ferrous metal minerals such as iron and manganese. The particle size range of the selected ore is 2-0.037mm, or even finer.

[0003] According to the particle size range of the selected ore, the shaking table is generally divided into coarse sand shaking table, fine sand shaking table, notch shaking table and slime shaking table. The coarse sand shaking table and the fine sand shaking table are both provided with a compound bar on the bed surface, and the structure and shape of the compound bar are different. The notch shaking table and the slime shaking table are provided with a notch on the bed surface to form the compound bar.

[0004] The shaking table is generally composed of a shaking table head, a bed surface, a feeding groove, a water feeding groove, a sliding device (including a supporting device and a slope adjusting device) and a motor. The basic structure of the shaking table of the applicant is also the same, and the difference lies in the slope structure of the bed surface, the shape of the compound bar and the combination form, which are respectively suitable for different types of ore properties and particle size ranges.

[0005] As a useful gravity separation device, the basic structure of the shaking table has not changed in the evolution history of more than one hundred years, and the bed surface and the transverse washing water are indispensable. The change is the material for manufacturing the shaking table and the structure of the compound bar, and it is difficult to greatly improve the technical index every time. For different mineral raw materials, a few decimal places of index improvement is considered to be very successful. This fact fully shows that the innovation difficulty in the field of shaking table is very great.

[0006] For tin ore resources in Yunnan Gejiu area, the ore properties are relatively complex and special. The main characteristics are tin-iron symbiosis, cross-embedded tin ore and iron minerals, fine particle size, and it is difficult to separate them at one time. Even if the ore is finely ground, it is also difficult to achieve complete dissociation of tin and iron minerals. The old tailings discarded for many years are weathered after wind and sun, and some symbiotic minerals are naturally dissociated, which is equivalent to the dissociation of tin minerals from the inclusions. The old tailings have the value of recycling. The shaking table and other equipment can be used to directly obtain tin concentrate. The structure, shape and combination form of the shaking table surface and the compound bar can be improved to obtain good technical indexes.

[0007] The Chinese patent with publication number CN105665117A, "An improved cloud tin formula shaking table rough sand shaking table surface structure" discloses a bed surface slope and a scheme of a return strip. The longitudinal slope of the bed surface is "three slopes and three flats". The bottom slope of the bed surface is composed of three climbing slopes and three flat slopes from the rough separation zone. The two rough separation zones 2 are the first climbing slope pinch-out zone. The first fine separation zone 3 is a flat slope zone. The second fine separation zone 4 is the second climbing slope pinch-out zone. The third fine separation zone 5 is the third climbing slope pinch-out shallow groove zone. The shallow groove zone 6 is a triangular flat zone. The fine separation zone 7 is also a triangular flat zone. The rough separation zone is a flat slope zone. The cross-sectional shape of the return strip is an upper inclined trapezoid, and a rectangular outwardly extending suspended crown strip is added at the vertex. The return strips are arranged in parallel and extend to the concentrate end and are similar to the pinch-out. There are strip grooves between the return strips. The slope change of the groove bottom surface is the change of the bed surface. The patent records that this bed surface is used for the test of the one-stage and two-stage bed operation of the tin-copper associated sulfide ore. The feed quantity is increased from the original 30-35 tons / day / table to 55-75 tons / day / table. The processing particle size range is expanded from 2.0-0.5 mm to 2.0-0.074 mm. Under the same conditions, the processing capacity is increased by 15-25 tons, the tin concentrate grade is increased by 3-5%, the tin recovery rate is increased by 6-20%, the 0.074-0.037 mm particle size grade recovery rate reaches 27-51%, and the 0.037-0.019 mm fine particle size grade recovery rate reaches 3.96-16.72%.

[0008] From the large change of the tin recovery rate index, it is inferred that the adaptability of this bed surface to tin minerals is not stable. There is not necessarily a stable causal relationship between the high index and the bed surface structure. Moreover, this bed surface structure is not necessarily suitable for recovering oxidized ore.

[0009] The Chinese patent with publication number CN220780732U, "A high-efficiency mineral separation fine sand shaking table surface", discloses a bed surface structure of one slope and two flats, that is, the bed surface climbs from the flat slope of the rough separation zone to the fine separation zone, and becomes a flat slope in the fine separation zone. The cross-sectional shape of the return strip is a combination of a rectangle and a trapezoid. A triangular groove is opened in the upper bottom of the trapezoid. The slope of the groove bottom surface between the return strips is the slope of the bed surface. The return strips are pinched out in the fine separation zone. According to the records, this bed surface is suitable for selecting tin-iron sulfide ore. However, it is not necessarily suitable for selecting oxidized ore, especially long-weathered sand tin ore, including old tailings. The traditional fine sand shaking table surface slope is set to three slopes and four flats. The selection effect on the above-mentioned oxidized sand tin ore is not ideal. It is necessary to improve it. SUMMARY

[0010] Therefore, the utility model provides a high proportion of coarse sand and fine sand shaking table, improves its shaking table surface slope structure and return strip shape and setting, in order to obtain better separation effect.

[0011] This utility model proposes a high-resolution coarse sand shaking table, which includes a shaking head, a table surface, a sliding seat, and a motor. The table surface is supported on the sliding seat and reciprocates under the influence of the shaking head, which is driven by the motor. A feed trough and a water trough are located on one side of the table surface, and reciprocating strips are distributed on the table surface. The key feature is that the table surface is divided into seven zones (G, G, C, A, B) from the head end to the concentrate end. The slope from the roughing zone (G) to the cleaning zone (A) is set from low to high as a flat slope (three slopes and four flat slopes). Zones A, C, and A are further subdivided into these zones. Zone G is a triangular plane, and the remaining sorting zones are parallelogram slopes. The rebars are distributed parallel to each other from Zone G to Zone A and taper off at the boundary of Zone A. The cross-sectional shape of the rebars is a horizontal trapezoid, with both the lower and upper bases perpendicular to the bed surface. The flat side is connected to the bed surface, the upper side is inclined and an additional bar is added at the high end, and the lower end becomes steeper. The gap between adjacent rebars is a groove between the bars. The additional bar tapers off at the boundary line between Zone G and Zone F. The rebars have a groove starting from the boundary line between Zone D and Zone C and taper off at Zone A.

[0012] The bed surface is constructed by nailing slope strips, bed surface strips, and three-layer plywood onto the bed frame according to the required slope. After applying putty and raw lacquer to the three-layer plywood, wooden ribbed strips are then nailed on. The putty and lacquer layer on the bed surface is 3-5mm thick. The ribbed strips are also coated with raw lacquer.

[0013] The height of the rib strip plus the additional strip is equal to the vertical distance between the two flat slopes at both ends of the bed surface, and the upper surface of the rib strip is parallel to each flat slope surface.

[0014] The angle between the boundary lines of zones G, F, E, and D and the tailings side of the bed surface is 32.5 degrees, and the angle between the boundary line of zone B and the tailings side of the bed surface is 42 degrees.

[0015] The width of the ribbed strip is 28-32mm, the width of the groove between the strips is 23-28mm, the horizontal distance of the steep slope on the inclined side is 4mm, the slope height is 2mm, and the height from the end of the slope to the bottom of the groove is 2mm.

[0016] This utility model proposes a high-resolution fine sand shaking table, which includes a shaking head, a table surface, a sliding seat, and a motor. The table surface is supported on the sliding seat and reciprocates under the action of the shaking head, which is driven by the motor. One side of the table surface has a feed trough and a water trough. Reinforcing bars are distributed on the table surface. The table surface is characterized by being divided into three zones: C', B', and A', from the head end to the concentrate end. The slope from the roughing zone C' to the cleaning zone A' is set to a flat slope with two flat sections. Zone B' is a secondary cleaning zone with a parallelogram slope. The reinforcing bars have a rectangular cross-section with four shallow triangular grooves on the top edge. The reinforcing bars are distributed parallel to each other from the roughing zone to the cleaning zone and taper off at the boundary line of the cleaning zone. One of two adjacent reinforcing bars has an additional fine sand bed strip to increase the resistance of fine heavy mineral particles drifting towards the tailings. The gaps between the reinforcing bars are called inter-bar grooves, and the slope of the inter-bar grooves changes with the slope of the table surface. The top surface of the reinforcing bars is parallel to the two flat slopes.

[0017] The fine sand bed surface is nailed with bed surface strips and three-layer plates according to the slope requirement on the bed frame, the three-layer plates are coated with lime and raw lacquer, and then wooden return strips are nailed. The thickness of the lime and lacquer coating on the bed surface is 3-5 mm. The return strips are also coated with raw lacquer.

[0018] The included angle of the shallow groove on the return strip is 90 degrees, the wave peak in the middle of the shallow groove is a flat peak, and there is a distance between the wave peak slope toe and the groove bottom between the strips.

[0019] The included angle between the B' area on the bed surface and the tailing side is 45 degrees.

[0020] The width of the return strip is 33-36 mm, the height is 4-6 mm, and the width of the groove between the strips is 19-22 mm.

[0021] The beneficial technical effects of the utility model are as follows:

[0022] The coarse sand shaking table is used for selecting and separating old tailings of a certain tin mine in Gejiu, when the selected product is 0.1-0.2%, the processing capacity is increased from the original 20 tons / day per table to 24-25 tons / day per table, the concentrate recovery rate is increased from the original about 45% to about 48%, and the concentrate grade is increased by 2-3 percentage points. The original shaking table is a traditional coarse sand shaking table.

[0023] The fine sand shaking table is used for selecting and separating old tailings of a certain tin mine in Gejiu, when the selected product is 0.1-0.2%, the processing capacity is increased from the original 20 tons / day per table to 24-25 tons / day per table, the concentrate recovery rate is increased from the original about 45% to about 48%, and the concentrate grade is increased by 2-3 percentage points. The original shaking table is a traditional coarse sand shaking table. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a high-proportion coarse sand shaking table bed surface structure schematic view (partly omitted).

[0025] Figure 2 is Figure 1 W-W sectional view (partly omitted).

[0026] Figure 3 is Figure 1 the return strip structure schematic view (cross-sectional view, partly omitted) of the roughing area shown in the figure.

[0027] Figure 4 is Figure 1 the structure schematic view of the return strip (partly omitted).

[0028] Figure 5 is a high-proportion fine sand shaking table bed surface structure schematic view (omitted shaking table head).

[0029] Figure 6 is Figure 5 B'-B' section view (partly omitted).

[0030] Figure 7 is Figure 5 The coarse selection area is shown in the schematic diagram of the return strip structure (schematic diagram of the cross section, partly omitted).

[0031] Figures 1-7 In the drawings, the reference numerals of the various components are as follows:

[0032] 1 - cradle head; 2 - bed surface; 3 - return strip; 4 - interstrip groove; 5 - base plate; 6 - edge strip; 301 additional strip; 302 - strip tip groove; 10 - fine sand bed surface; 11 - fine sand bed edge strip; 12 - fine sand bed interstrip groove; 13 - fine sand bed return strip; 14 - fine sand bed additional strip. DETAILED DESCRIPTION

[0033] The utility model will be further described below in combination with the drawings.

[0034] As Figures 1-4 shown. The cradle head 1, bed frame, ore feeding groove, water feeding groove, sliding device (including supporting device and slope adjusting device), motor and other parts of the high proportion coarse sand shaking table of the utility model are basically the same as those of the existing shaking table, and are not the innovative points of the utility model. Readers can refer to the patent documents such as the utility model of the applicant with the publication number CN216094208U, which will not be described here.

[0035] The bed surface 2 is provided with slope strips, bed surface strips and three-layer plates on the bed frame (i.e. base plate 5) according to the slope requirement, and wood return strips 3 are nailed on the three-layer plates after being coated with paint ash and raw lacquer. The thickness of the paint ash and lacquer layer on the bed surface is 3-5 mm. The return strips are also coated with raw lacquer. After the slope of the bed surface is formed, it is also divided into multiple separation zones ABCDEFG, that is, three slopes and four flat slopes, and the connection and distribution of the flat slopes and climbing slopes in each zone are as shown in Figures 1-2 .

[0036] The distribution structure of the return strips from the edge strip 6 to the ore feeding side is shown in Figure 4 . The cross-sectional shape of the additional strip 301 is rectangular, and a part thereof is suspended to the interstrip groove 4, wherein the width I9 of the interstrip groove is 23-28 mm, and the width I8 of the return strip is 28-32 mm. The remaining dimensions are as follows:

[0037] I = 10.5 mm;

[0038] I1 = 4 mm;

[0039] I2 = 6.5 mm;

[0040] I3 = 3 mm;

[0041] I4 = 4 mm;

[0042] I5=2mm;

[0043] I6=2mm;

[0044] I7=8mm;

[0045] I 10 =8mm;

[0046] I 11 =10.5mm.

[0047] As Figures 5-7 shown. The swing bed head, bed frame, ore feeding groove, water feeding groove, sliding device (including supporting device and slope adjusting device), motor and other parts of the high-fraction fine sand swing bed of the utility model are basically the same as those of the existing swing bed, and are not the innovative points of the utility model. Readers can refer to the patent documents such as the utility model patent with the publication number CN216094208U of the applicant, and the details are not described here.

[0048] The fine sand bed surface 10 is nailed with a bed surface strip and three layers of plates on the bed frame according to the slope requirement, the three layers of plates are coated with paint ash and raw lacquer, and then wooden return strips 3 are nailed. The thickness of the paint ash and lacquer coating on the bed surface is 3-5mm. The return strips are also coated with raw lacquer. After the slope of the bed surface is formed, it is also divided into a plurality of separation zones A'B'C', that is, one slope and two flat slopes, and the connection and distribution of the flat slopes and the climbing slopes in each zone are as shown in Figures 5-6 .

[0049] The cross section of the fine sand bed return strip 13 is basically rectangular, only four triangular shallow grooves are opened at the top edge of the rectangle, the return strips are distributed in parallel from the rough separation zone to the fine separation zone and disappear at the boundary line of the fine separation zone, one of the two adjacent return strips has a fine sand bed additional strip 14 on it to increase the resistance of the fine particles of heavy minerals to float away with the tailings, the gap between the return strips is a fine sand bed strip gap 12, the slope change of the strip gap is the slope change of the bed surface, and the top surface of the return strip is parallel to the two flat slopes. The cross-sectional structure of the fine sand bed return strip in the rough separation zone C' is as shown in Figure 7 .

[0050] The width S of the fine sand bed return strip is 33-36mm (36mm in this example), and the width S9 of the fine sand bed strip gap 12 is 19-22mm. Other dimensions are as follows:

[0051] S1=6mm;

[0052] S2=5mm;

[0053] S3=5mm;

[0054] S4=4mm;

[0055] S5=5mm;

[0056] S6 = 5 mm;

[0057] S7 = 6 mm;

[0058] S8 = 6 mm;

[0059] S 10 = 8 mm;

[0060] r1 = 5 mm;

[0061] r2 = 2 mm;

[0062] r3 = 3 mm;

[0063] r4 = 8 mm.

[0064] The unmentioned components, reference signs and parameters are as shown in the figure.

Claims

1. A high-ratio coarse sand shaking table, comprising a shaking head, a table surface, a sliding seat, and a motor, wherein the table surface is supported on the sliding seat and reciprocates under the drive of the shaking head, the shaking head being driven by the motor, a feed trough and a water trough are located on one side of the table surface, and reciprocating strips are distributed on the table surface, characterized in that... The bed surface is divided into seven zones from the head end to the concentrate end: GFEDCBA. The slope from the roughing zone G to the cleaning zone A is set from low to high as a flat slope, i.e., three slopes and four flat slopes. Zones A, C, and G are triangular planes, while the remaining sorting zones are parallelogram slopes. The ribs are distributed parallel to each other from zone G to zone A and taper off at the boundary of zone A. The cross-sectional shape of the ribs is a horizontal trapezoid, with the lower and upper bases perpendicular to the bed surface, the flat side connected to the bed surface, the upper side sloping and with additional ribs added at the upper end, and the lower end becoming steeper. The gap between adjacent ribs is a rib groove. The additional ribs taper off at the boundary between zone G and zone F. The ribs have a rib groove starting from the boundary between zone D and zone C and taper off at zone A.

2. The high-ratio coarse sand shaking table according to claim 1, characterized in that... The bed surface is made by nailing slope strips, bed surface strips and three-layer boards onto the bed frame according to the required slope. After the three-layer boards are coated with paint putty and raw lacquer, wooden rib strips are nailed on. The thickness of the putty and paint layer on the bed surface is 3-5mm, and the rib strips are also coated with raw lacquer.

3. The high-ratio coarse sand shaking table according to claim 1, characterized in that... The height of the rib strip plus the additional strip is equal to the vertical distance between the two flat slopes at both ends of the bed surface, and the upper surface of the rib strip is parallel to each flat slope surface.

4. The high-ratio coarse sand shaking table according to claim 1, characterized in that... The angle between the boundary lines of zones G, F, E, and D and the tailings side of the bed surface is 32.5 degrees, while the angle between the boundary line of zone B and the tailings side of the bed surface is 42 degrees.

5. The high-ratio coarse sand shaking table according to claim 1, characterized in that... The width of the ribbed strip is 28-32mm, the width of the groove between the strips is 23-28mm, the horizontal distance of the steep slope on the inclined side is 4mm, the slope height is 2mm, and the height from the end of the slope to the bottom of the groove is 2mm.

6. A high-resolution fine sand shaking table, comprising a shaking head, a table surface, a sliding seat, and a motor, wherein the table surface is supported on the sliding seat and reciprocates under the action of the shaking head, the shaking head being driven by the motor, a feed trough and a water trough are located on one side of the table surface, and reciprocating strips are distributed on the table surface, characterized in that... The bed surface is divided into three zones: C', B', and A' from the head end to the concentrate end. The slope from the roughing zone C' to the cleaning zone A' is set to a flat slope with two flat sections, i.e., one slope and two flat sections. Zone B' is the secondary cleaning zone with a parallelogram slope. The cross-sectional shape of the rib strips is rectangular, with four shallow triangular grooves on the top edge. The rib strips are distributed in parallel from the roughing zone to the cleaning zone and taper at the boundary line of the cleaning zone. One of the adjacent rib strips has a fine sand bed additional strip to increase the resistance of fine heavy mineral particles to drift towards the tailings. The gap between the rib strips is called the inter-strip groove. The slope change of the inter-strip groove is the slope change of the bed surface. The top surface of the rib strip is parallel to the two flat slopes.

7. The high-resolution fine sand shaking table according to claim 6, characterized in that... The fine sand bed surface is made by nailing bed strips and three-layer boards to the bed frame according to the required slope. After the three-layer boards are coated with paint putty and raw lacquer, wooden rib strips are nailed on. The thickness of the putty and paint layer on the bed surface is 3-5mm, and the rib strips are also coated with raw lacquer.

8. The high-resolution fine sand shaking table according to claim 6, characterized in that... The shallow grooves on the ribbed strip have an included angle of 90 degrees. The crest in the middle of the shallow groove is a flat-topped peak. There is a distance between the toe of the crest slope on the tailings side and the bottom of the groove between the strips.

9. The high-resolution fine sand shaking table according to claim 6, characterized in that... The angle between zone B' on the bed surface and the side of the tailings is 45 degrees.

10. The high-resolution fine sand shaking table according to claim 6, characterized in that... The width of the ribbed sliver is 33-36mm, the height is 4-6mm, and the width of the groove between the slivers is 19-22mm.

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