Tailing dense proportioning experiment machine and experiment system

Abstract

The utility model belongs to the technical field of tailings treatment experiments, and particularly relates to a tailings dense proportioning experiment machine and an experiment system. The barrel is arranged on the experiment frame, an overflow groove is formed in the upper edge of the barrel, the stirring mechanism is fixed to the upper end of the overflow groove through a supporting frame, and the stirring mechanism downwards extends into the bottom of the barrel; the feeding end of the circulating pump is communicated with the bottom of the barrel, the discharging end of the circulating pump penetrates through the middle of the barrel and then extends into an inner cavity of the barrel, and a concentration meter is arranged between the circulating pump and the barrel; the isolation sleeve is correspondingly sleeved outside the stirring mechanism; a feeding hole connected with a feeding pipe is formed in the middle of the isolation sleeve; materials are stirred through the stirring mechanism, the stirring mechanism and the feeding port are relatively isolated by arranging the isolation sleeve, it is guaranteed that overflowing water and the materials do not interfere with each other, meanwhile, the materials at the bottom of the barrel are pumped out and conveyed to the middle of an inner cavity of the barrel in cooperation with the circulating pump, circular flowing of the materials is formed, and the mixing uniformity is further improved; and inaccurate experimental data caused by insufficient mixing is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to tailings treatment experimental technical field, concretely relates to a tailings thickening proportioning experiment machine and experimental system. BACKGROUND

[0002] In mineral exploitation operation, a large amount of tailings waste will be produced, and tailings thickening treatment is the key link in the tailings treatment process, and solid-liquid separation of tailings can be realized through thickening treatment, laying a foundation for subsequent tailings backfilling, brick making and other resource utilization processes. The tailings thickening treatment effect is influenced by tailings concentration, flocculant addition amount, stirring intensity and various factors, therefore, before actual engineering application, tailings thickening experiment needs to be carried out to determine the optimal process parameters. The structure of the existing experimental equipment is unreasonable, and tailings and flocculants are difficult to realize uniform mixing in a short time, resulting in low accuracy and reliability of experimental data.

[0003] Therefore, it is necessary to provide an improved technical scheme for the above-mentioned prior art. UTILITY MODEL CONTENT

[0004] The utility model aims at overcoming the deficiencies in the prior art, and provides a tailings thickening proportioning experiment machine and experimental system.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A tailings thickening proportioning experiment machine, comprising:

[0007] The cylinder is arranged on the experimental frame, and an overflow groove is arranged on the cylinder;

[0008] The stirring mechanism comprises a motor, a stirring shaft and a rake frame, the motor is fixed on the support frame, the main shaft of the motor extends along the axis of the cylinder, the upper end of the stirring shaft is connected to the main shaft of the motor, and the lower end of the stirring shaft is rotatably connected to the bottom surface of the cylinder; the rake frame is connected to the middle and lower parts of the stirring shaft;

[0009] The circulating pump is connected to the bottom of the cylinder, the discharge end of the circulating pump extends into the inner cavity of the cylinder after passing through the middle part of the cylinder, and a concentration meter is arranged between the circulating pump and the cylinder;

[0010] The isolation sleeve is connected to the outside of the stirring mechanism, and a feed inlet connected to a feed pipe is arranged in the middle part of the isolation sleeve; the upper end of the isolation sleeve is connected to the support frame, and the lower end of the isolation sleeve extends to the middle part of the cylinder;

[0011] The tailings separation plate is an annular lattice structure corresponding to the lower half of the isolation sleeve, a sliding sleeve connected by a positioning rod is arranged in the middle of the tailings separation plate, a limiting gap corresponding to the positioning rod is arranged on the lower edge of the isolation sleeve, the sliding sleeve is correspondingly sleeved on the stirring shaft, the upper end of the sliding sleeve is a first bevel, a pressing sleeve corresponding to the sliding sleeve is arranged on the stirring shaft, the lower end of the pressing sleeve is a second bevel corresponding to the first bevel, the first bevel and the second bevel interact to drive the tailings separation plate to move longitudinally during the rotation of the pressing sleeve with the stirring shaft, and a reset spring corresponding to the edge of the tailings separation plate is arranged on the inner wall of the cylinder.

[0012] Preferably, the overflow groove is L-shaped in cross section, the upper end surface of the overflow groove is higher than the upper end surface of the cylinder, and the bottom of the overflow groove is provided with an overflow pipe.

[0013] Preferably, the bottom of the cylinder is a conical bottom, and correspondingly, the main body of the rake frame is an n-shaped frame, and the lower end of the n-shaped frame is provided with a V-shaped structure corresponding to the conical bottom.

[0014] Preferably, a plurality of support rods are arranged in the rake frame, and the support rods are parallel to the axis of the cylinder.

[0015] Preferably, a plurality of sampling ports are arranged on the outer wall of the cylinder, and the sampling ports are uniformly distributed in the axial direction of the cylinder.

[0016] Preferably, a plurality of overflow gaps are arranged on the upper edge of the cylinder and uniformly distributed in the circumferential direction of the cylinder, and the lowest point of the overflow gap is higher than the bottom surface of the overflow groove.

[0017] A tailings concentration ratio experiment system, comprising any of the above experiment machines, comprising:

[0018] A tailings preparation tank for preparing dry tailings into tailings slurry;

[0019] A flocculant preparation tank for preparing a flocculant;

[0020] An observation cabinet, the observation cabinet is internally provided with a transparent observation cavity for observing the tailings flocculation process;

[0021] The experiment machine is two, two said experiment machine through the feed pipe in series, the feed pipe one end respectively through the feed pump connection said tailings preparation tank and flocculant preparation tank, the feed pipe the other end corresponding connection said observation cavity.

[0022] Preferably, the observation cabinet is provided with a camera, and the camera is opposite to the observation cavity.

[0023] Preferably, the experimental machine separates the tailings slurry by the barrel, wherein the barrel diameter of one experimental machine is half of the barrel diameter of another experimental machine.

[0024] Beneficial effects: The material is stirred by the stirring mechanism, the stirring mechanism is isolated from the feeding port by the isolation sleeve, the overflow water and the material are prevented from interfering with each other, meanwhile, the material at the bottom of the barrel is pumped out and transported to the middle of the inner cavity of the barrel by the circulating pump, the circulating flow of the material is formed, the mixing uniformity is further improved, and the inaccurate experimental data caused by insufficient mixing is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0025] The drawings accompanying the specification of this application provide further understanding of the present application, the illustrative embodiments of the present application and the explanations thereof serve to explain the present application, and do not constitute improper limitations on the present application. Among them:

[0026] Figure 1 The structure diagram of the experimental machine in the specific embodiment provided by the present application is shown in the figure;

[0027] Figure 2 The sectional view of the experimental machine in the specific embodiment provided by the present application is shown in the figure;

[0028] Figure 3 The Figure 2 The enlarged schematic view of A in the figure;

[0029] Figure 4 The structure diagram of the experimental system in the specific embodiment provided by the present application is shown in the figure.

[0030] In the figure: 1, tailings preparation tank; 2, feeding pump; 3, flocculant preparation tank; 4, feeding pipe; 5, experimental machine; 6, observation cabinet; 7, observation cavity;

[0031] 101, barrel; 102, support frame; 103, sampling port; 104, rake frame; 105, circulating pump; 106, concentration meter; 107, overflow pipe; 108, overflow tank; 109, motor; 110, isolation sleeve; 111, overflow notch; 112, stirring shaft; 113, return spring; 114, extrusion sleeve; 115, sliding sleeve; 116, positioning rod; 117, tailings separation plate. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.

[0033] In the description of the utility model, the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and do not require the utility model to be necessarily constructed and operated in a particular orientation, therefore, cannot be understood as limiting the utility model. The terms "connected", "connected" used in the utility model should be understood broadly, for example, can be fixed connection, can also be detachable connection, can be directly connected, or indirectly connected through intermediate components, and those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0034] The utility model will be described in detail below with reference to the drawings and in combination with the embodiments. It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0035] As Figures 1-4 The utility model discloses a tailings thickening proportioning experiment machine for verifying the thickening change under different tailings and flocculating agent proportioning, including cylinder body 101, stirring mechanism, circulating pump 105 and isolating bush 110, cylinder body 101 sets up on the experiment frame, and the experiment frame is the square frame (not shown in the drawing) welded of stainless steel, is equipped with overflow launder 108 on the upper end of cylinder body 101, and overflow launder 108 is annular, is fixed through welding on the outer wall of cylinder body 101, and the section of overflow launder 108 is L-shaped, and the upper end surface of overflow launder 108 is higher than the upper end surface of cylinder body 101 by no less than 5cm, to ensure that the supernatant overflows stably. Overflow pipe 107 is welded on the bottom of overflow launder 108, and a valve is arranged on overflow pipe 107, which can control the discharge speed of the clear liquid, and overflow pipe 107 extends to the collecting tank correspondingly to collect the separated water, and a turbidimeter is arranged on overflow pipe 107 to detect the turbidity of the overflow water.

[0036] A support frame 102 is arranged on the upper end of overflow launder 108, which can be grid-shaped or cover-shaped and is fixedly connected with overflow launder 108 through bolts. The stirring mechanism is fixed above overflow launder 108 through support frame 102, and the stirring mechanism extends into the bottom of cylinder body 101 downward to stir and mix the raw materials entering cylinder body 101.

[0037] An isolation sleeve 110 corresponding to the stirring mechanism is provided on the support frame 102. The isolation sleeve 110 is fitted onto the outside of the stirring mechanism. A feed inlet connected to the feed pipe 4 is located in the middle of the isolation sleeve 110. The feed pipe 4 is equipped with a control valve and is connected to the tailings preparation tank 1 and the flocculant preparation tank 3 via branch pipes. After the material enters through the feed inlet in the middle of the isolation sleeve 110, it undergoes preliminary mixing inside the isolation sleeve 110. This also reduces interference with overflow material when the stirring mechanism rotates. The upper end of the isolation sleeve 110 is connected to the support frame 102, and the lower end of the isolation sleeve 110 extends to the middle of the cylinder 101. Preferably, the length of the isolation sleeve 110 is not less than one-third of the length of the cylinder 101.

[0038] In this embodiment, a tailings separation plate 117 is provided in the lower half of the isolation sleeve. The tailings separation plate 117 is set on the necessary channel for water overflow. The longitudinal reciprocating movement of the tailings separation plate 117 improves the flocculation and separation capacity of the tailings sand passing through it, ensuring the separation capacity of the tailings slurry. Specifically, the tailings separation plate 117 is an annular grid structure corresponding to the lower half of the isolation sleeve. The inner diameter of the tailings separation plate 117 is adapted to the outer diameter of the isolation sleeve, so that it can slide along the longitudinal direction of the isolation sleeve. A sliding sleeve 115 is provided in the middle of the tailings separation plate 117 and connected by a positioning rod 116. The sliding sleeve 115 is fixedly connected to the tailings separation plate 117. A limiting notch corresponding to the positioning rod 116 is provided on the lower edge of the isolation sleeve. The limiting notch extends longitudinally to the lower end face of the isolation sleeve, thereby limiting the movement of the positioning rod 116. The trajectory prevents the tailings separation plate 117 from rotating with the stirring shaft. The sliding sleeve 115 is correspondingly sleeved on the stirring shaft. The upper end of the sliding sleeve 115 is a first inclined surface with an angle of 20-30 degrees. The stirring shaft is provided with a corresponding squeezing sleeve 114. The squeezing sleeve 114 is concentrically fixed on the stirring shaft. The lower end of the squeezing sleeve 114 is a second inclined surface corresponding to the first inclined surface. The angles of the first and second inclined surfaces are the same. During the rotation of the squeezing sleeve 114 with the stirring shaft, the first and second inclined surfaces interact to drive the tailings separation plate 117 to move longitudinally. The inner wall of the cylinder is provided with a corresponding return spring 113 that supports the edge of the tailings separation plate 117. The return spring 113 drives the tailings separation plate 117 to return to its original position, thereby ensuring that the overflowing tailings are completely separated. In an optional embodiment, the stirring mechanism includes a motor 109, a stirring shaft 112, and a rake frame 104. The motor 109 is fixed to the support frame 102 by bolts. The motor 109 is a variable frequency motor, which can adjust the stirring speed. The main shaft of the motor 109 extends along the axis of the cylinder 101. The upper end of the stirring shaft 112 is connected to the main shaft of the motor 109 through a coupling. The lower end of the stirring shaft 112 is rotatably connected to the center position of the bottom surface of the cylinder 101 through a bearing. A corresponding upward-facing sleeve can be provided at the bottom of the cylinder 101 to ensure the stable rotation of the stirring shaft 112.

[0039] In the embodiment, the bottom of the barrel 101 is a conical bottom with a cone angle of 60°, which facilitates the tailings to converge to the center after deposition. The rake frame 104 is welded from a solid or hollow steel pipe, and is located at the middle and lower part of the stirring shaft 112. The main body of the rake frame 104 is an n-shaped frame, and the lower end of the n-shaped frame is provided with a V-shaped structure matched with the conical bottom of the barrel 101. The cone angle of the V-shaped structure is consistent with the cone angle of the conical bottom, which can fully scrape and stir the tailings at the conical bottom and effectively prevent the tailings from depositing and clogging at the conical bottom. The inside of the rake frame 104 is welded with spaced support rods parallel to the axis of the barrel 101. The spacing between adjacent support rods is 10-30 cm, which enhances the structural strength of the rake frame 104 and improves the stirring effect.

[0040] Furthermore, the stirring shaft 112 is provided with a stirring arm corresponding to the isolation sleeve 110, so that the material can be fully contacted and stirred after entering from the feed inlet, and direct diffusion of the material to the entire inner cavity of the barrel 101 is avoided to prevent insufficient mixing.

[0041] In an optional embodiment, the feed end of the circulating pump 105 is communicated with the bottom of the barrel 101, and the discharge end of the circulating pump 105 extends into the inner cavity of the barrel 101 after passing through the middle part of the barrel 101. The circulating pump 105 can extract part of the mixed material at the bottom of the barrel 101 and re-deliver it to the middle part of the inner cavity of the barrel 101, forming a circulating flow of the material, promoting further uniform mixing of the tailings and the flocculating agent, and breaking the static stratification state of the material, simulating the dynamic processing environment of the tailings in actual engineering, and improving the authenticity of the experimental results.

[0042] A concentration meter 106 is arranged between the feed end of the circulating pump 105 and the barrel 101 to monitor the concentration of the tailings slurry.

[0043] In the embodiment, a plurality of sampling ports 103 are distributed on the outer wall of the barrel 101, and the sampling ports 103 are uniformly distributed in the axial direction of the barrel 101. The axially uniformly distributed sampling ports 103 can sample the material at different depths in the barrel 101, and the circumferentially uniformly distributed sampling ports 103 can sample the material at different positions at the same depth. Specifically, six sampling ports 103 are arranged on the outer wall of the barrel 101, and each sampling port 103 is provided with a control valve. When sampling, the control valve is opened to sample, so that the uniformity of the tailings concentration in the barrel 101 is comprehensively analyzed through multi-position sampling detection, and the comprehensiveness and accuracy of the experimental data are improved.

[0044] The barrel 101 is provided with a plurality of overflow notches 111 uniformly distributed along the circumferential direction thereof, and the lowest point of the overflow notch 111 is higher than the bottom surface of the overflow groove 108.

[0045] The barrel 101 is columnar, a plurality of overflow notches 111 are uniformly arranged on the barrel 101, the overflow notches 111 are uniformly distributed along the circumference of the barrel 101, the arrangement of the overflow notches 111 can ensure that the supernatant in the barrel 101 can flow into the overflow groove 108 smoothly and uniformly, and avoid that the material is overflowed due to too fast local overflow, and the lowest point of the overflow notch 111 is 2 cm higher than the bottom surface of the overflow groove 108.

[0046] In another optional embodiment, the application also provides a tailings thickening proportioning experiment system, which comprises any one of the above experiment machines 5, a tailings preparation tank 1, a flocculant preparation tank 3, an observation cabinet 6 and two experiment machines 5, the tailings preparation tank 1 is provided with a stirring device and a water adding device, dry tailings are mixed into tailings slurry with different concentrations by controlling the water adding amount and the stirring time, so as to meet the requirements of different experiment parameters, and the dry tailings are prepared into the tailings slurry.

[0047] The flocculant preparation tank 3 is used for preparing the flocculant, the flocculant preparation tank 3 is provided with a stirring device and a heating device (according to the dissolution requirement of the flocculant), the flocculant powder and water can be fully mixed and dissolved in the flocculant preparation tank 3, and the flocculant solution with different concentrations is prepared.

[0048] The observation cabinet 6 is internally provided with a transparent observation cavity 7, which is used for observing the tailings flocculation process. The transparent observation cavity 7 is made of high-strength transparent glass or acrylic material, which is convenient for experiment personnel to directly observe the flocculation reaction process of the tailings mixed with the flocculant, and record key data such as the formation time, size and morphology of the flocculation body.

[0049] The two experiment machines 5 are connected in series through the feeding pipe 4, the two experiment machines 5 connected in series can realize continuous experiments under different process conditions, or repeatedly verify experiments under the same process condition, and improve the reliability of the experiment data.

[0050] Specifically, one end of the feeding pipe 4 is connected with the tailings preparation tank 1 and the flocculant preparation tank 3 through the feeding pump 2 respectively, the tailings preparation tank 1 and the flocculant preparation tank 3 are communicated with the feeding pipe 4 through branch pipes respectively, the feeding pump 2 provides power for material conveying, the branch pipes are provided with control valves, the feeding flow rates of the tailings preparation tank 1 and the flocculant preparation tank 3 can be controlled by adjusting the rotating speed of the feeding pump 2, so that experiments of different tailings and flocculant proportions are realized.

[0051] The other end of the feeding pipe 4 is correspondingly connected with the observation cavity 7, the tailings slurry output by the tailings preparation tank 1 and the flocculant solution output by the flocculant preparation tank 3 are preliminarily mixed in the feeding pipe 4 and then enter the observation cavity 7, and experiment personnel can observe the flocculation reaction process in the observation cavity 7.

[0052] In the embodiment, the observation cavity 7 can be located in front of or behind the experiment machine 5, which is not limited herein.

[0053] The observation cabinet 6 is provided with a camera, the camera is opposite to the observation cavity 7, the camera can shoot the image data of the tailings flocculation process in real time, and it is convenient for the experimental personnel to analyze the flocculation process subsequently, furthermore, the experimental machine 5 is used for tailings slurry sedimentation separation through the cylinder body 101, the cylinder body 101 of the two experimental machines 5 is provided with a diameter difference, specifically, the diameter of the cylinder body 101 of one experimental machine 5 is half of the diameter of the cylinder body 101 of the other experimental machine 5, by setting the cylinder body 101 with different diameters, the tailings thickening process under different treatment scales can be simulated, the experimental system integrates the tailings preparation tank 1, the flocculant preparation tank 3, the observation cabinet 6 and the experimental machines 5 in series, realizes the integrated process from tailings and flocculant preparation, flocculation process observation to tailings thickening experiment, the two experimental machines 5 with different diameters are arranged in series, the comparative experiment under different process parameters and different treatment scales can be realized, the experimental range is expanded, the experimental efficiency and the reliability of experimental data are improved, and more comprehensive and accurate process parameter basis is provided for actual engineering application.

[0054] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall fall within the protection scope of the pending claims of the present application.

Claims

1. A tailings thickening and proportioning test machine, characterized in that, include: A cylindrical body is mounted on an experimental frame, and an overflow groove is provided along the upper edge of the cylindrical body. A stirring mechanism includes a motor, a stirring shaft, and a rake frame. The motor is fixed on a support frame, and the main shaft of the motor extends along the axis of the cylinder. The upper end of the stirring shaft is correspondingly connected to the main shaft of the motor, and the lower end of the stirring shaft is rotatably connected to the bottom surface of the cylinder. The rake frame is correspondingly connected to the lower middle part of the stirring shaft. A circulating pump, wherein the inlet end of the circulating pump is connected to the bottom of the cylinder, and the outlet end of the circulating pump extends into the inner cavity of the cylinder after passing through the middle of the cylinder. A concentration meter is provided between the circulating pump and the cylinder. An isolation sleeve is fitted over the outside of the stirring mechanism, and a feed inlet for connecting a feed pipe is provided in the middle of the isolation sleeve; the upper end of the isolation sleeve is connected to the support frame, and the lower end of the isolation sleeve extends to the middle of the cylinder. The tailings separation plate is an annular grid structure that is fitted onto the lower half of the isolation sleeve. A sliding sleeve connected by a positioning rod is provided in the middle of the tailings separation plate. The lower edge of the isolation sleeve is provided with a limiting notch corresponding to the positioning rod. The sliding sleeve is fitted onto the stirring shaft. The upper end of the sliding sleeve is a first oblique surface. The stirring shaft is provided with a pressing sleeve corresponding to the sliding sleeve. The lower end of the pressing sleeve is a second oblique surface corresponding to the first oblique surface. During the rotation of the pressing sleeve with the stirring shaft, the first oblique surface and the second oblique surface interact to drive the tailings separation plate to move longitudinally. A return spring is provided on the inner wall of the cylinder to support the edge of the tailings separation plate.

2. The tailings thickening and proportioning test machine according to claim 1, characterized in that, The overflow trough has an L-shaped cross-section, with its upper end face higher than the upper end face of the cylinder, and an overflow pipe is provided at the bottom of the overflow trough.

3. The tailings thickening and proportioning test machine according to claim 2, characterized in that, The bottom of the cylinder is conical, and correspondingly, the main body of the rake frame is an n-shaped frame with a V-shaped structure at its lower end corresponding to the conical bottom.

4. The tailings thickening and proportioning test machine according to claim 3, characterized in that, The rake frame is equipped with multiple spaced-apart support rods, which are parallel to the axis of the cylinder.

5. The tailings thickening and proportioning test machine according to claim 1, characterized in that, Multiple sampling ports are distributed on the outer wall of the cylinder, and the sampling ports are evenly distributed along the axial direction of the cylinder.

6. The tailings thickening and proportioning test machine according to claim 1, characterized in that, The cylinder has multiple overflow notches evenly distributed along its circumference, and the lowest point of the overflow notch is higher than the bottom surface of the overflow groove.

7. A tailings thickening and proportioning experimental system, comprising the experimental machine as described in any one of claims 1-6, characterized in that, include: Tailings preparation tank, wherein the tailings preparation tank is used to prepare dry tailings into tailings slurry; Flocculant preparation tank; the flocculant preparation tank is used to prepare flocculants. An observation cabinet, the observation cabinet having a transparent observation chamber inside, is used to observe the tailings flocculation process; There are two experimental machines connected in series via feed pipes. One end of each feed pipe is connected to the tailings preparation tank and the flocculant preparation tank via a feed pump, and the other end of the feed pipe is connected to the observation chamber.

8. The tailings thickening and proportioning experimental system according to claim 7, characterized in that, The observation cabinet is equipped with a camera, which is positioned directly facing the observation cavity.

9. The tailings thickening and proportioning experimental system according to claim 7, characterized in that, The experimental machine separates the tailings slurry by means of a cylinder, and the diameter of the cylinder of one experimental machine is half the diameter of the cylinder of the other experimental machine.

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