Flotation equipment

Abstract

The utility model discloses flotation equipment which comprises a machine body, the machine body comprises a mixing section, a transition section and a transportation separation section which are sequentially arranged from bottom to top, a mixing cavity is defined by the mixing section, a transition cavity communicated with the mixing cavity is defined by the transition section, and a transportation separation cavity communicated with the transition cavity is defined by the transportation separation section. And the cross section of the transition cavity is gradually reduced from bottom to top. According to the flotation equipment provided by the embodiment of the utility model, the transition cavity is arranged, so that the turbulence intensity in the mixing cavity can be enhanced, the probability of mineral particle deposition is reduced, and the probability of forming a flotation dead zone is further reduced; meanwhile, the turbulence intensity of the transportation separation cavity can be weakened, the floating speed of mineralized bubbles is increased, the risk that target minerals fall off from the bubbles is reduced, and therefore the overall performance of flotation equipment is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of mineral processing equipment, specifically relates to a flotation equipment. BACKGROUND

[0002] Mechanical stirring type flotation machine is divided into mixing zone, transport separation zone and froth zone from bottom to top, and strong turbulence is formed in the mixing zone under the stirring of the impeller, so that the target mineral and the bubble are in full contact to form mineralized bubbles, the mineralized bubbles float in the transport separation zone to realize the separation of the target mineral and the gangue mineral, and then the froth layer is formed in the froth zone. Since the mixing zone and the transport separation zone have no obvious regional boundary in the flotation machine, the turbulence in the mixing zone will spread to the transport separation zone, so that part of the mineralized bubbles in the floating process are brought into the mixing zone again, and the target mineral on the mineralized bubbles falls off.

[0003] In order to reduce the influence of strong turbulence slurry on the floating of mineralized bubbles, a flow stabilizing plate is arranged above the impeller of the flotation machine in the related technology, so as to change the movement direction of the turbulence state slurry, and then weaken the turbulence intensity of the slurry in the transport zone, but the setting of the flow stabilizing plate will hinder the floating of the mineralized bubbles, reduce the floating speed of the mineralized bubbles, increase the probability of the mineral particles that have been mineralized falling off from the bubbles, and even cause the deposition of the mineral particles in the flotation slurry, form a flotation dead zone in the mixing zone, reduce the effective volume of the flotation equipment, and then affect the overall performance of the flotation equipment. SUMMARY

[0004] The utility model aims at at least in a certain extent solves one of the technical problems in the related art.

[0005] Therefore, the embodiment of the utility model provides a flotation equipment, by setting the transition chamber, the turbulence intensity in the mixing chamber can be strengthened, the probability of the mineral particle deposition is reduced, and then the probability of forming the flotation dead zone in the mixing zone is reduced, the turbulence intensity of the transport separation chamber can be weakened and the floating speed of the mineralized bubble is increased, the risk of the target mineral falling off from the bubble is reduced, and the overall performance of the flotation equipment is improved.

[0006] The flotation equipment of the utility model embodiment comprises a machine body, the machine body comprises a mixing section, a transition section and a transport separation section arranged in sequence from bottom to top, the mixing section surrounds a mixing chamber, the transition section surrounds a transition chamber communicated with the mixing chamber, the transport separation section surrounds a transport separation chamber communicated with the transition chamber, and the cross section of the transition chamber gradually decreases from bottom to top.

[0007] In some embodiments, the transition chamber has a first transition port arranged towards the mixing chamber, the mixing chamber has a mixing port arranged towards the transition chamber, the cross section of the first transition port is the same as the cross section of the mixing port; and / or the transition chamber has a second transition port arranged towards the transport separation chamber, the transport separation chamber has a transport port arranged towards the transition chamber, the cross section of the second transition port is the same as the cross section of the transport port.

[0008] In some embodiments, the ratio of the cross sectional area of the second transition port to the cross sectional area of the first transition port is 1.5-2.

[0009] In some embodiments, the mixing section is a straight cylinder section; and / or the transport separation section is a straight cylinder section.

[0010] In some embodiments, the cross section of the transition chamber is circular, elliptical or polygonal.

[0011] In some embodiments, the cross section of the transition chamber is polygonal, the transition section comprises a plurality of transition plates, two adjacent transition plates intersect, and the plurality of transition plates enclose the transition chamber.

[0012] In some embodiments, the longitudinal section of the transition chamber is isosceles trapezoidal.

[0013] In some embodiments, the machine body comprises an outer shell and an inner shell, the outer shell comprises a first section and a second section arranged in sequence from bottom to top, the inner shell is arranged in the second section and connected with the second section, the first section encloses the mixing section, a part of the inner shell encloses the transition section, and another part of the inner shell encloses the transport separation section.

[0014] In some embodiments, the flotation device further comprises a stirring device, the stirring device is connected with the machine body, the stirring device comprises an impeller, the impeller is arranged in the mixing chamber

[0015] In some embodiments, the flotation device further comprises a pump body, the outlet of the pump body is in communication with the mixing chamber.

[0016] The flotation equipment of the embodiment of the utility model, through the transition cavity, the cavity wall of transition cavity is in the contraction state from bottom to top, can limit the activity area of ore pulp, and then strengthen the turbulence intensity in the mixing cavity, weaken the turbulence intensity of the transport separation cavity, so as to reduce the risk that the mineralization bubble in the transport separation cavity is brought into the mixing area again and causes the purpose mineral to fall off. At the same time, since the cross section of the transition cavity decreases from bottom to top, the floating speed of the mineralization bubble gradually increases during the floating process in the transition cavity, so that the mineralization bubble enters the transport separation cavity quickly, so as to realize the separation of the purpose mineral and the gangue mineral, thereby further reducing the risk of the purpose mineral falling off and improving the overall performance of the flotation equipment.

[0017] Compared with the way of setting the steady flow plate in the related art, the flotation equipment of the embodiment of the utility model can strengthen the turbulence intensity in the mixing cavity, reduce the probability of mineral particle deposition, and then reduce the probability of forming the flotation dead zone in the mixing area; at the same time, the turbulence intensity of the transport separation cavity can be weakened, and the floating speed of the mineralization bubble can be increased, thereby reducing the risk of the purpose mineral falling off from the bubble, so as to improve the overall performance of the flotation equipment. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the structure schematic view of the flotation equipment of one embodiment of the utility model.

[0019] Figure 2 is the structure schematic view of the flotation equipment of another embodiment of the utility model.

[0020] Reference signs:

[0021] 100, flotation equipment;

[0022] 1, machine body; 11, mixing section; 111, mixing cavity; 12, transition section; 121, transition cavity; 122, transition plate; 13, transport separation section; 131, transport separation cavity; 14, foam section; 141, foam cavity; 15, outer shell; 151, first section; 152, second section; 16, inner shell; 17, shell;

[0023] 2, stirring device; 21, impeller; 22, stirring shaft; 23, power device. DETAILED DESCRIPTION

[0024] The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the utility model, and cannot be understood as a limitation of the utility model.

[0025] As Figure 1 and Figure 2As shown, the flotation equipment 100 of the embodiment of the utility model includes a machine body 1, the machine body 1 includes sequentially arranged from bottom to top mixing section 11, transition section 12 and transport separation section 13, mixing section 11 surrounds mixing cavity 111, transition section 12 surrounds the transition cavity 121 in communication with mixing cavity 111, and transport separation section 13 surrounds the transport separation cavity 131 in communication with transition cavity 121, and the cross section of transition cavity 121 gradually decreases from bottom to top.

[0026] The flotation equipment 100 of the embodiment of the utility model, by additionally adding transition cavity 121, the cavity wall of transition cavity 121 is in a contraction state from bottom to top, can limit the activity area of the ore pulp, and further strengthen the turbulence intensity in mixing cavity 111, weaken the turbulence intensity in transport separation cavity 131, so as to reduce the risk that the mineralized bubbles in transport separation cavity 131 are brought into the mixing zone again to cause the purpose mineral to fall off. At the same time, since the cross section of transition cavity 121 decreases from bottom to top, the upward velocity of the mineralized bubbles gradually increases during the upward process in transition cavity 121, so that the mineralized bubbles quickly enter transport separation cavity 131 to realize the separation of the purpose mineral and the gangue mineral, thereby further reducing the risk of the purpose mineral falling off and improving the overall performance of the flotation equipment 100.

[0027] Compared with the way of setting a steady flow plate in the related art, the flotation equipment 100 of the embodiment of the utility model can strengthen the turbulence intensity in mixing cavity 111, reduce the probability of mineral particle deposition, and further reduce the probability of generating a flotation dead zone; at the same time, the turbulence intensity in transport separation cavity 131 can be weakened, and the upward velocity of the mineralized bubbles can be increased, thereby reducing the risk of the purpose mineral falling off from the bubbles, so as to improve the overall performance of the flotation equipment 100.

[0028] Optionally, as shown in Figure 1 and Figure 2 As shown, the machine body 1 further includes a froth section 14 arranged on the upper side of the transport separation section 13, the froth section 14 surrounds a froth cavity 141, when the mineralized bubbles float to the top of the ore pulp, a froth layer is formed in the froth cavity 141, and the froth is collected by a froth collecting device for further processing.

[0029] Optionally, the material of mixing section 11 is steel, concrete, glass steel or the like.

[0030] It can be understood that the cross-sectional size of mixing cavity 111 is determined by the turbulent Reynolds number of the ore pulp in mixing cavity 111, and needs to meet the requirements of the ore pulp turbulent region. The longitudinal size of mixing cavity 111 needs to meet: the Reynolds number of the ore pulp at the outermost side of the region is not less than 5% of the average Reynolds number of the ore pulp in the region.

[0031] The contraction angle of the cavity wall of transition cavity 121 needs to meet: the upward velocity of the mineralized bubbles after contraction is 50% to 80% of the critical flow velocity of the mineral particle size after grinding and dissociation of the purpose mineral.

[0032] The longitudinal dimension of the transport separation chamber 131 needs to satisfy: the upward floating speed of the mineralized bubbles at the bottom of the froth layer is 50%~80% of the critical flow velocity of the ground mineral particles after the ground mineral particles are dissociated.

[0033] In some embodiments, as shown in Figure 1 and Figure 2 , the transition chamber 121 has a first transition port arranged towards the mixing chamber 111, the mixing chamber 111 has a mixing port arranged towards the transition chamber 121, the cross section of the first transition port is the same as the cross section of the mixing port; and / or the transition chamber 121 has a second transition port arranged towards the transport separation chamber 131, the transport separation chamber 131 has a transport port arranged towards the transition chamber 121, the cross section of the second transition port is the same as the cross section of the transport port.

[0034] It is known that if the cross section of the first transition port is different from the cross section of the mixing port, for example, the cross section of the first transition port is smaller than the cross section of the mixing port, a first chamber wall towards the mixing chamber 111 will be formed at the upper side edge of the mixing chamber 111, which will hinder the upward floating of the mineralized bubbles in the mixing chamber 111, causing the detachment of the target minerals, and thus easily forming a flotation dead zone in the mixing chamber 111, reducing the effective volume of the flotation device 100, and affecting the overall performance of the flotation device 100.

[0035] If the cross section of the second transition port is different from the cross section of the transport port, for example, the cross section of the second transition port is larger than the cross section of the transport port, a second chamber wall arranged downward will be formed at the upper side edge of the transition chamber 121, which will hinder the upward floating of the mineralized bubbles in the transition chamber 121, causing the detachment of the target minerals, and affecting the overall performance of the flotation device 100.

[0036] Through the above arrangement, the connection between the transition chamber 121 and the mixing chamber 111 and the connection between the transition chamber 121 and the transport separation chamber 131 are both smooth, thereby reducing the probability of detachment of the target minerals and improving the overall performance of the flotation device 100.

[0037] In some embodiments, the ratio of the cross-sectional area of the second transition port to the cross-sectional area of the first transition port is 1.5~2.

[0038] Through the above arrangement, the upward floating speed of the mineralized bubbles is increased by 1.5~2 times after passing through the transition chamber 121, in other words, the upward floating speed of the mineralized bubbles in the transport separation zone is 1.5~2 times of the upward floating speed of the mineralized bubbles in the mixing zone, so that the mineralized bubbles can quickly float to realize the separation of the target minerals and the gangue minerals, reduce the risk of detachment of the target minerals by the bubbles, and achieve better flotation effect.

[0039] In some embodiments, as shown in Figure 1 andFigure 2 As shown, the mixing section 11 is a straight section; and / or the transport separation section 13 is a straight section.

[0040] By setting the mixing section 11 as a straight cylindrical section, the shape of the mixing section 11 becomes more regular, which is more conducive to the production and processing of the mixing area and reduces production costs.

[0041] By setting the transport separation section 13 as a straight section, the mineralized bubbles can maintain a high upward velocity in the transport separation chamber 131, which is more conducive to the separation of the target mineral and gangue mineral.

[0042] In some embodiments, the cross-section of the transition cavity 121 is circular, elliptical, or polygonal.

[0043] Depending on actual production needs, the cross-sectional shape of the transition cavity 121 can be designed differently, which is more conducive to improving the flotation performance of the flotation equipment 100.

[0044] Optionally, the cross-section of the mixing chamber 111 and the cross-section of the transport separation chamber 131 are consistent with the cross-section of the transition chamber 121.

[0045] This simplifies the production and processing of the mixing section 11, the transition section 12, and the transport separation section 13, and reduces production costs.

[0046] In some embodiments, the cross-section of the transition cavity 121 is polygonal, the transition segment 12 includes a plurality of transition plates 122, two adjacent transition plates 122 intersect, and the plurality of transition plates 122 surround the transition cavity 121.

[0047] The cross-section of the transition cavity 121 is set to a polygon, and the transition section 12 is spliced ​​together from multiple transition plates 122. Compared with setting the cross-section of the transition cavity 121 to a circle or ellipse, the production process is simpler and the cost is lower.

[0048] As an example, such as Figure 1 and Figure 2 As shown, the transition section 12 includes four transition plates 122, with adjacent transition plates 122 perpendicular and intersecting, and the four transition plates 122 forming a transition cavity 121 with a rectangular cross-section; correspondingly, the cross-sections of the mixing cavity 111 and the transition separation cavity are also rectangular, thereby reducing the production cost of the body 1 while ensuring the capacity of the body 1.

[0049] In some embodiments, such as Figure 1 and Figure 2 As shown, the longitudinal section of the transition cavity 121 is an isosceles trapezoid.

[0050] In other words, the two sides of the longitudinal section of the transition cavity 121 are straight lines and symmetrical about the center line of the transition cavity 121, so that the structure of the transition cavity 121 is simpler, thereby reducing the design and production cost of the transition section 12.

[0051] For example, when the cross section of the transition cavity 121 is circular, the shape of the transition cavity 121 is conical.

[0052] Of course, in other embodiments, the two sides of the longitudinal section of the transition cavity 121 can also be arc-shaped.

[0053] In some embodiments, as shown in Figure 1 The machine body 1 includes an outer shell 15 and an inner shell 16, the outer shell 15 includes a first section 151 and a second section 152 arranged in sequence from bottom to top, the inner shell 16 is arranged in the second section 152 and connected with the second section 152, the first section 151 encloses the mixing section 11, a part of the inner shell 16 encloses the transition section 12, and another part of the inner shell 16 encloses the transport separation section 13.

[0054] It is known that the flotation device in the related art includes an outer shell having a mixing zone, a transport separation zone and a froth zone arranged in sequence from bottom to top, and the cross sections of the mixing zone, the transport separation zone and the froth zone remain consistent from bottom to top.

[0055] Through the above arrangement, the old flotation device 100 in the related art can be modified to realize the reuse of the flotation device 100 in the related art. Specifically, the inner shell 16 is added in the outer shell 15, a part of the inner shell 16 encloses the transition section 12, and another part of the inner shell 16 encloses the transport separation section 13; the cavity wall of the transition cavity 121 can limit the strong turbulent flow state of the ore pulp to increase the turbulent flow intensity in the mixing cavity 111, reduce the probability of deposition of mineral particles, and further reduce the probability of forming a flotation dead zone in the mixing zone 111; at the same time, the upward speed of the mineralized bubbles can be increased, and the residence time of the mineralized bubbles in the transport separation cavity 131 can be reduced, thereby reducing the risk of the target mineral falling off from the bubbles and improving the overall performance of the flotation device 100.

[0056] In some embodiments, as shown in Figure 2 The machine body 1 includes a shell 17, and the shell 17 includes a mixing section 11, a transition section 12, a transport separation section 13 and a froth section 14 arranged in sequence from bottom to top.

[0057] Therefore, when a new flotation device 100 is produced and processed, the structure of the machine body 1 can be simplified, and the production cost can be reduced.

[0058] In some embodiments, as shown in Figure 1As shown in the figure, the flotation device 100 further comprises a stirring device 2, which is connected with the body 1, and the stirring device 2 comprises an impeller 21 arranged in the mixing cavity 111.

[0059] The rotation of the impeller 21 can keep the mixing cavity 111 in a strong turbulent state, so that the target mineral is in full contact with the bubbles and attached to the bubbles to form mineralized bubbles, so that the target mineral is floated by the bubbles, and the flotation of the target mineral is realized; meanwhile, the rotation of the impeller 21 can also reduce the probability of deposition of mineral particles, thereby reducing the probability of formation of a flotation dead zone in the mixing area 111.

[0060] As shown in the figure, Figure 1 and Figure 2 As shown in the figure, the stirring device 2 further comprises a stirring shaft 22 and a power device 23, the stirring shaft 22 extends vertically and rotatably penetrates the top wall of the body 1, and the power device 23 is used to drive the stirring shaft 22 to rotate, thereby driving the impeller 21 to rotate.

[0061] In some embodiments, the flotation device 100 further comprises a pump body (not shown in the figure), and the outlet of the pump body is communicated with the mixing cavity 111.

[0062] By pumping the medium such as gas and liquid into the mixing cavity 111, the mixing area can be kept in a strong turbulent state, so that the target mineral is in full contact with the bubbles and attached to the bubbles to form mineralized bubbles, so that the target mineral is floated by the bubbles, and the flotation of the target mineral is realized; meanwhile, the probability of deposition of mineral particles is reduced, thereby reducing the probability of formation of a flotation dead zone and improving the overall performance of the flotation device 100.

[0063] Optionally, the pump body is a gas pump or a liquid pump.

[0064] Optionally, the flotation device of the embodiment only comprises one of the pump body and the stirring device.

[0065] Therefore, the structure of the flotation device is simpler, and the mixing area can be kept in a strong turbulent state.

[0066] Of course, in other embodiments, according to actual needs, the stirring device and the pump body can also be provided at the same time.

[0067] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as a limitation of the utility model, and the changes, modifications, replacements and modifications of the above-mentioned embodiments made by the ordinary skilled in the art are within the protection scope of the utility model.

Claims

1. A flotation device (100) characterized in that, The machine body (1) comprises a mixing section (11), a transition section (12) and a transport separation section (13) arranged in sequence from bottom to top, the mixing section (11) surrounds a mixing cavity (111), the transition section (12) surrounds a transition cavity (121) in communication with the mixing cavity (111), and the transport separation section (13) surrounds a transport separation cavity (131) in communication with the transition cavity (121), and the cross section of the transition cavity (121) gradually decreases from bottom to top.

2. The flotation plant (100) according to claim 1, characterized in that, The transition cavity (121) has a first transition port arranged towards the mixing cavity (111), the mixing cavity (111) has a mixing port arranged towards the transition cavity (121), and the cross section of the first transition port is the same as that of the mixing port; and / or The transition cavity (121) has a second transition port arranged towards the transport separation cavity (131), the transport separation cavity (131) has a transport port arranged towards the transition cavity (121), and the cross section of the second transition port is the same as that of the transport port.

3. The flotation plant (100) according to claim 2, characterized in that, The ratio of the cross-sectional area of the second transition port to that of the first transition port is 1.5-2.

4. The flotation plant (100) according to claim 1, characterized in that, The mixing section (11) is a straight cylinder section; and / or The transport separation section (13) is a straight cylinder section.

5. The flotation plant (100) according to claim 1, characterized in that, The cross section of the transition cavity (121) is circular, elliptical or polygonal.

6. The flotation plant (100) according to claim 5, characterized in that, The cross section of the transition cavity (121) is polygonal, the transition section (12) comprises a plurality of transition plates (122), and adjacent two transition plates (122) intersect, and the plurality of transition plates (122) surround the transition cavity (121).

7. The flotation plant (100) according to claim 1, characterized in that, The longitudinal section of the transition cavity (121) is isosceles trapezoidal.

8. The flotation plant (100) according to claim 4, characterized in that, The machine body (1) comprises an outer shell (15) and an inner shell (16), the outer shell (15) comprises a first section (151) and a second section (152) arranged in sequence from bottom to top, the inner shell (16) is arranged in the second section (152) and connected with the second section (152), the first section (151) surrounds the mixing section (11), a part of the inner shell (16) surrounds the transition section (12), and another part of the inner shell (16) surrounds the transport separation section (13).

9. The flotation plant (100) according to any of claims 1 - 8, characterized in that, The stirring device (2) is connected with the machine body (1), and the stirring device (2) comprises an impeller (21) arranged in the mixing cavity (111).

10. The flotation plant (100) according to any of claims 1 - 8, characterized in that, The pump body (3) is connected with the mixing cavity (111).

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