Active bauxite ore flotation device
By designing special mixing impellers and setting damping mesh plates in mining flotation machines, the problems of high load and low flotation efficiency of mixing motors in the prior art are solved, and lower power consumption and higher flotation are achieved efficiency.
Patent Information
- Application Number
- CN202421179847.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-24
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-05-24
AI Technical Summary
During the stirring process, the existing mining flotation machines have high load on the stirring motor, large electricity consumption, unsatisfactory flotation efficiency and effect, and uneven bubbles lead to a decrease in the utilization rate of the agent.
By designing a special stirring impeller, the rotation resistance is reduced, and a damping mesh is installed inside the flotation machine tank to reduce the bubble rise speed to form a finer and uniform foam.
It reduces the load and electricity consumption of the stirring motor, extends the service life of the motor, improves the flotation efficiency and effect, increases the utilization rate of gases and agents, and reduces the cost of drug consumption.
Smart Images
Figure CN222469354U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of ore dressing equipment, and in particular relates to an active bauxite flotation device. Background Art
[0002] Activated bauxite, also known as activated alumina, mainly refers to the alumina mineral used in catalysts. It is a porous, highly dispersed solid material. The alumina in the original ore of bauxite is of low purity and usually contains a large amount of impurities. It needs to be processed by crushing, roughing, and concentrating. The concentrating process generally adopts flotation separation. The pulp treated with reagents in the flotation machine is stirred and aerated so that some of the mineral particles are selectively fixed on the bubbles and float to the surface of the pulp to be scraped out to form a foam product, while the rest is retained in the pulp to achieve the purpose of separating minerals. However, existing mining flotation machines have some problems, such as: the rotational resistance encountered by the stirring impeller in the ore slurry is very large, which leads to a large load on the stirring motor, high heat generation of the motor, shortened service life, high power consumption, and increased energy consumption costs; the bubbles generated by the stirring rise quickly, and small bubbles tend to aggregate to form large bubbles during the rising process. The bubbles are large and small, and the foam is uneven, resulting in a decrease in the total specific surface area of the bubbles, reducing the contact opportunities for the selected minerals, and large bubbles are easier to break, resulting in a corresponding decrease in the amount of mineral attachment on the bubble surface, unsatisfactory flotation efficiency and effect, reduced utilization of gas and reagents, and increased reagent consumption costs. Utility Model Content
[0003] In view of the above situation, the utility model provides an activated bauxite flotation device, which reduces the rotation load of the stirring motor through the structural design of the stirring impeller; reduces the rising speed of bubbles through the damping mesh plate, and the formed foam is finer and more uniform.
[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0005] An activated bauxite flotation device comprises a flotation machine cell, a stirring assembly and a scraper assembly. A feed port is arranged in the middle of the side wall of the flotation machine cell for introducing flotation slurry into the flotation machine cell, froth scraping ports are arranged on both sides of the top of the flotation machine cell, and a slurry discharge port is arranged at the bottom of the flotation machine cell.
[0006] The stirring assembly comprises a stirring impeller, a stirring shaft, a hollow air duct, a stirring motor, a motor support and a motor hood. The stirring shaft is rotatably arranged vertically in the center of the flotation machine tank body. The upper end of the stirring shaft passes through the top of the flotation machine tank body and is connected to the output shaft of the stirring motor. The stirring impeller is coaxially arranged at the lower end of the stirring shaft. An impeller shield is also provided on the outer periphery of the stirring impeller. The stirring motor is vertically installed above the flotation machine tank body through the motor support. The motor support is a vertical hollow tubular structure with a plurality of air inlet holes opened on the side wall. The motor hood is sleeved on the outside of the stirring motor and the motor support. The bottom of the motor hood is connected to the flotation machine tank body. An open air inlet is provided on the top of the motor hood. The hollow air duct is coaxially sleeved on the outside of the stirring shaft. The upper end of the hollow air duct is fixedly connected to the top of the flotation machine tank body. The impeller shield is coaxially connected to the lower end of the hollow air duct. A plurality of air outlet holes are opened on the side wall of the impeller shield.
[0007] The scraper assembly includes a scraper shaft, a rotating scraper and a scraper motor. The scraper shaft can be rotatably mounted horizontally above the scraper port of the flotation machine cell. One end of the scraper shaft is transmission-connected to the scraper motor. The scraper motor is fixedly mounted on the flotation machine cell. A plurality of rotating scrapers are fixedly connected to the outer wall of the scraper shaft for removing the froth above the flotation slurry from the scraper port.
[0008] Furthermore, the stirring impeller includes a sleeve that is cooperatively sleeved on the outside of the stirring shaft, and a plurality of rectangular blades that are radially arranged on the outside of the sleeve. A "concave"-shaped notch is opened in the middle of the outer edge of each rectangular blade. By reducing the resistance area encountered by the middle part of each rectangular blade when rotating, the rotational resistance of the entire stirring impeller is reduced, while at the same time ensuring the effective centrifugal force area of the upper and lower ends of each rectangular blade when rotating, and will not affect the suction capacity and material suction capacity of the stirring impeller.
[0009] Furthermore, a plurality of layers of damping mesh plates are horizontally laid above the liquid level of the flotation slurry inside the flotation machine cell, a plurality of mesh through holes are opened on the damping mesh plates, a central through hole for the hollow air duct to pass through is opened in the middle of the damping mesh plates, the outer peripheral edge of the damping mesh plates is connected to the inner wall of the flotation machine cell, and the damping mesh plates are located below the scraper port to form a damping effect on the rising bubbles, reduce the rising speed of the bubbles, and can also cut and decompose large bubbles into multiple small bubbles.
[0010] Furthermore, a plurality of vertical guide vanes are annularly arranged on the periphery of the impeller shroud, and the lower side of each guide vane is fixedly connected to the top of the flotation machine cell body.
[0011] Furthermore, a propeller blade is coaxially arranged on the outer side of the stirring shaft above the stirring impeller, and the propeller blade is placed inside the impeller shield.
[0012] Furthermore, a branch is connected to the middle of the hollow air duct with a medicine adding pipe and an auxiliary air inlet pipe, which are used to replenish medicine and supply air respectively.
[0013] Furthermore, the stirring shaft and the hollow air duct are rotatably connected via a bearing and a bearing bracket. The bearing is cooperatively sleeved on the outside of the stirring shaft, and the bearing bracket is cooperatively mounted between the outer circle of the bearing and the inner wall of the hollow air duct. A plurality of hollow ventilation holes are annularly opened on the bearing bracket.
[0014] Furthermore, both ends of the scraper shaft are rotatably connected to the flotation machine tank body through a bearing seat, and the bearing seat is a vertical external spherical bearing seat.
[0015] Furthermore, a lower silo is provided below the flotation machine cell body for receiving material discharged from the slurry discharge port of the flotation machine cell body, and a discharge port is provided on the side wall of the lower silo.
[0016] Furthermore, a feed valve, a discharge valve and a discharge valve are respectively installed on the feed port, the discharge port and the discharge port of the flotation machine cell.
[0017] The utility model also includes other components that enable it to be used normally, which are all conventional means in the field. In addition, the devices or components not limited in the utility model all adopt the existing technology in the field.
[0018] The beneficial effects of the utility model are as follows:
[0019] The activated bauxite flotation device provided by the utility model reduces the rotation resistance of the stirring impeller, lightens the load of the stirring motor, and reduces the power consumption through the structural design of the stirring impeller, and at the same time provides auxiliary air cooling for the stirring motor through the design of the suction channel of the stirring impeller, thereby extending the service life of the motor; and by arranging a damping mesh plate, the resistance to the rising of bubbles is increased, the rising speed of bubbles is reduced, and the formation of large bubbles is avoided, so that the generated foam is finer and more uniform, the amount of mineral attachment on the foam surface is increased, the flotation efficiency and flotation effect are improved, the utilization rate of gas and reagents is improved, and the cost of reagent consumption is reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the structure of the activated bauxite flotation device in the embodiment.
[0021] Figure 2 for Figure 1 Schematic diagram of the top view of the guide vane along line AA.
[0022] Figure 3 for Figure 1 Schematic diagram of the three-dimensional structure of the stirring impeller.
[0023] Figure 4 for Figure 1 Schematic diagram of the three-dimensional structure of the medium damping mesh plate.
[0024] Figure 5 for Figure 1 Schematic diagram of the top view of the bearing bracket along line BB. DETAILED DESCRIPTION
[0025] The technical solution of the present utility model will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments.
[0026] Example
[0027] like Figure 1 As shown, an activated bauxite flotation device includes a flotation machine cell 1, a stirring assembly and a scraper assembly. A feed port 2 is provided in the middle of the side wall of the flotation machine cell for introducing flotation slurry into the flotation machine cell. Two scraper ports 3 are symmetrically provided on both sides of the top of the flotation machine cell, and a slurry discharge port 4 is provided at the bottom of the flotation machine cell.
[0028] The stirring assembly comprises a stirring impeller 5, a stirring shaft 6, a hollow air duct 7, a stirring motor 8, a motor support 9 and a motor hood 10. The stirring shaft is rotatably arranged vertically in the center of the flotation machine tank body. The upper end of the stirring shaft passes through the top of the flotation machine tank body and is connected to the output shaft of the stirring motor. The stirring impeller is coaxially arranged at the lower end of the stirring shaft. An impeller shield 11 is also provided on the outer periphery of the stirring impeller. The stirring motor is vertically installed above the flotation machine tank body through the motor support. The motor support is a vertical hollow tubular structure with a plurality of air inlet holes 12 opened on the side wall. The motor hood is sleeved on the outside of the stirring motor and the motor support. The bottom of the motor hood is connected to the flotation machine tank body. An open air inlet 13 is provided on the top of the motor hood. The hollow air duct is coaxially sleeved on the outside of the stirring shaft. The upper end of the hollow air duct is fixedly connected to the top of the flotation machine tank body. The impeller shield is coaxially connected to the lower end of the hollow air duct. A plurality of air outlet holes 14 are opened on the side wall of the impeller shield.
[0029] The scraper assembly includes a scraper shaft 15, a rotating scraper 16 and a scraper motor 17. Two sets of scraper assemblies are correspondingly arranged on the two scraper ports. The scraper shaft can be rotatably mounted horizontally above the scraper port of the flotation machine cell. One end of the scraper shaft is transmission-connected to the scraper motor. The scraper motor is fixedly mounted on the flotation machine cell. A plurality of rotating scrapers are fixedly connected to the outer wall of the scraper shaft for removing the froth above the flotation slurry from the scraper port.
[0030] like Figure 3As shown, the stirring impeller includes a sleeve 51 which is fitted on the outside of the stirring shaft, and a plurality of rectangular blades 52 which are radially arranged on the outside of the sleeve. A "concave"-shaped notch 53 is provided in the middle of the outer edge of each rectangular blade. By reducing the resistance area of the middle part of each rectangular blade when rotating, the rotational resistance of the entire stirring impeller is reduced, the load of the stirring motor is reduced, and the power consumption is saved. At the same time, the effective centrifugal force area of the upper and lower ends of each rectangular blade is guaranteed when rotating, which will not affect the suction capacity and material suction capacity of the stirring impeller, thereby ensuring the amount of bubbles and foam generated during the stirring process.
[0031] like Figure 4 As shown, a multi-layer damping mesh plate 18 is horizontally laid above the flotation slurry liquid level inside the flotation machine cell, a plurality of mesh through holes are opened on the damping mesh plate, a central through hole 19 for the hollow air duct to pass through is opened in the middle of the damping mesh plate, the outer peripheral edge of the damping mesh plate is connected to the inner wall of the flotation machine cell, and the damping mesh plate is located below the scraper port to form a damping effect on the rising bubbles and reduce the rising speed of the bubbles. At the same time, it can also cut and decompose large bubbles into multiple small bubbles, thereby increasing the total specific surface area of the bubbles and increasing the contact opportunity and contact time between the bubbles and the slurry.
[0032] like Figure 2 As shown, a plurality of vertical guide blades 20 are arranged in an annular manner around the outer periphery of the impeller shield, so that the slurry centrifugally thrown out by the agitator impeller forms a vortex, and the slurry forms more and finer bubbles and foams during the collision with the guide blades. The lower side of each guide blade is fixedly connected to the top of the flotation machine tank.
[0033] A propeller blade 21 is coaxially arranged on the outside of the stirring shaft above the stirring impeller. The propeller blade is placed inside the impeller shield, which helps to assist the stirring impeller in enhancing its air intake capacity, increasing the air intake volume of the air inlet at the upper end of the hollow air duct and the air flow passing through the motor wind cover and around the stirring motor, increasing the amount of bubbles formed by slurry stirring and inflation, and at the same time improving the heat dissipation and cooling effect of the stirring motor.
[0034] The middle part of the hollow air duct is also connected to a branch channel with a reagent adding pipe 22 and an auxiliary air inlet pipe 23, which are respectively used to replenish the reagent and supply the air. The reagent adding pipe and the auxiliary air inlet pipe are correspondingly provided with detachable pipe mouth covers. When the slurry in the flotation machine tank body produces poor bubbles and it is necessary to add reagents or increase the air intake, the corresponding pipe mouth covers can be opened to replenish the reagents and assist the air intake.
[0035] like Figure 5As shown, the stirring shaft and the hollow air duct are rotatably connected via a bearing 24 and a bearing bracket 25, which improves the stability of the stirring shaft. The bearing is cooperatively sleeved on the outside of the stirring shaft, and the bearing bracket is cooperatively mounted between the outer circle of the bearing and the inner wall of the hollow air duct. A plurality of hollow ventilation holes are annularly opened on the bearing bracket, and the incoming air can pass through the middle of the hollow ventilation holes without affecting the ventilation effect of the hollow air duct.
[0036] The two ends of the scraper shaft are rotatably connected to the flotation machine tank body through bearing seats (not shown in the figure). The bearing seats are vertical external spherical bearing seats, and the bottom of the bearing seats is fixedly installed on the flotation machine tank body.
[0037] A lower silo 26 is provided below the flotation machine cell body for receiving and temporarily storing the sedimentation slurry discharged from the slurry discharge port of the flotation machine cell body, and a discharge port 27 is provided on the side wall of the lower silo. A feed valve, a slurry discharge valve and a discharge valve are respectively installed on the feed port, the slurry discharge port and the discharge port of the flotation machine cell body, which are respectively used to control the slurry feeding, discharging and discharging in the flotation machine cell body.
[0038] The technical solution of the present invention is not limited to the above-mentioned specific embodiments. Without departing from the scope and spirit of the described embodiments, many modifications and changes are obvious to ordinary technicians in this technical field. Any technical deformation made within the spirit and principles of the present invention falls within the protection scope of the present invention.
Claims
1. An activated bauxite flotation device, comprising a flotation machine tank, a stirring assembly and a scraper assembly, characterized in that: A feed port is provided in the middle of the side wall of the flotation machine cell body for introducing flotation slurry into the flotation machine cell body, froth scraping ports are provided on both sides of the top of the flotation machine cell body, and a slurry discharge port is provided at the bottom of the flotation machine cell body; the stirring assembly comprises a stirring impeller, a stirring shaft, a hollow air duct, a stirring motor, a motor support and a motor hood, the stirring shaft can be rotatably arranged vertically in the center of the flotation machine cell body, the upper end of the stirring shaft passes through the top of the flotation machine cell body and is connected to the output shaft of the stirring motor, the stirring impeller is coaxially arranged at the lower end of the stirring shaft, and an impeller shield is also provided on the periphery of the stirring impeller, the stirring motor is vertically installed above the flotation machine cell body through a motor support, the motor support is a vertical hollow tubular structure with a plurality of air inlet holes opened on the side wall, and the motor hood is provided with a plurality of air inlet holes. The machine wind hood is sleeved on the outside of the stirring motor and the motor support, the bottom of the motor wind hood is connected to the flotation machine cell body, the top of the motor wind hood is provided with an open air inlet, the hollow air duct is coaxially sleeved on the outside of the stirring shaft, the upper end of the hollow air duct is fixedly connected to the top of the flotation machine cell body, the impeller guard is coaxially connected to the lower end of the hollow air duct, and a plurality of air outlet holes are opened on the side wall of the impeller guard; the scraper assembly includes a scraper shaft, a rotating scraper and a scraper motor, the scraper shaft can be rotatably mounted horizontally above the scraping port of the flotation machine cell body, one end of the scraper shaft is drivingly connected to the scraper motor, the scraper motor is fixedly installed on the flotation machine cell body, and a plurality of rotating scrapers are fixedly connected to the outer wall of the scraper shaft for removing the froth above the flotation slurry from the scraping port.
2. The activated bauxite flotation device according to claim 1, characterized in that: The stirring impeller comprises a shaft sleeve which is fitted on the outside of the stirring shaft, and a plurality of rectangular blades which are radially arranged on the outside of the shaft sleeve, and a concave notch is provided in the middle of the outer edge of each rectangular blade.
3. The activated bauxite flotation device according to claim 1, characterized in that: A plurality of damping mesh plates are horizontally laid above the flotation slurry liquid level inside the flotation machine cell, the damping mesh plates are provided with a plurality of mesh through holes, a central through hole for the hollow air duct to pass through is provided in the middle of the damping mesh plates, the outer peripheral edge of the damping mesh plates is connected to the inner wall of the flotation machine cell, and the damping mesh plates are located below the scraper port to form a damping effect on the rising bubbles.
4. The activated bauxite flotation device according to claim 1, characterized in that: A plurality of vertical guide vanes are annularly arranged on the periphery of the impeller guard, and the lower side of each guide vane is fixedly connected to the top of the flotation machine tank body.
5. The activated bauxite flotation device according to claim 1, characterized in that: A propeller blade is coaxially arranged on the outer side of the stirring shaft above the stirring impeller, and the propeller blade is placed inside the impeller shield.
6. The activated bauxite flotation device according to claim 1, characterized in that: The middle part of the hollow air duct is also connected with a medicine adding pipe and an auxiliary air inlet pipe, which are used for replenishing medicine and replenishing air respectively.
7. The activated bauxite flotation device according to claim 1, characterized in that: The stirring shaft and the hollow air duct are rotatably connected via a bearing and a bearing bracket. The bearing is sleeved on the outside of the stirring shaft, and the bearing bracket is mounted between the outer circle of the bearing and the inner wall of the hollow air duct. A plurality of hollow ventilation holes are annularly opened on the bearing bracket.
8. The activated bauxite flotation device according to claim 1, characterized in that: The two ends of the scraper shaft are rotatably connected to the flotation machine tank body through a bearing seat, and the bearing seat is a vertical external spherical bearing seat.
9. The activated bauxite flotation device according to claim 1, characterized in that: A lower silo is provided below the flotation machine tank body for receiving materials discharged from the slurry discharge port of the flotation machine tank body, and a discharge port is provided on the side wall of the lower silo.
10. An activated bauxite flotation device according to claim 9, characterized in that: The feed inlet, discharge port and discharge port of the flotation machine cell body are respectively provided with a feed valve, a discharge valve and a discharge valve.