Phosphate concentrate powder re-slurry equipment

Abstract

The utility model discloses a kind of phosphorus concentrate powder re-slurry equipment, belong to phosphorus ore production field.A kind of phosphorus concentrate powder re-slurry equipment, including working cylinder, inner cylinder is fixedly connected in working cylinder cavity, the top of inner cylinder is equipped with feed inlet, the bottom of inner cylinder is provided with guide cylinder, circulation passage is formed between inner cylinder and working cylinder interval, guide cylinder is equipped with discharge port being communicated with circulation passage, rotatingly connected with shaft on working cylinder, guide piece is provided in guide cylinder, the direction of conveying of guide piece is towards discharge port, the outer wall of shaft is provided with main stirring vane, and main stirring vane is arranged in inner cylinder cavity;The utility model can make slurry form the compound motion mode of forced stirring and circulation passage circulation reflux in working cylinder, compared with traditional single-shaft stirring, the uniformity of slurry mixing can be improved, and then prevent slurry in working cylinder from forming mineral powder agglomerate particle sinking at low speed, improve the stirring effect of mineral powder.

Description

Technical Field

[0001] This utility model relates to the field of phosphate rock production technology, and in particular to a phosphate concentrate powder re-slurry equipment. Background Technology

[0002] Phosphate concentrate is the raw material for phosphate fertilizer companies to produce phosphoric acid and phosphate fertilizer. Most companies have phosphate ore beneficiation plants that directly produce phosphate concentrate slurry of suitable concentration and send it to the phosphoric acid plant. However, most companies need to re-slurry the phosphate concentrate powder to form a concentrate slurry of suitable and stable concentration for phosphoric acid production.

[0003] In existing technologies, phosphate concentrate powder is mixed with liquid (water / acidic solution) in a certain proportion to form a fluid slurry to meet the concentration requirements of subsequent flotation or acid leaching processes. Paddle agitators are usually equipped to mix and stir the phosphate concentrate powder and liquid in the mixing drum to improve mixing efficiency. However, paddle agitators are prone to forming agglomerated mineral powder particles that sink at low speeds, which affects the stirring effect of the mineral powder. Utility Model Content

[0004] The purpose of this invention is to solve the problem that in the prior art, paddle agitators are prone to agglomeration and sedimentation of mineral powder particles at low speeds, and to propose a phosphate concentrate re-slurrying device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A phosphate concentrate reslurry equipment includes a working cylinder, an inner cylinder fixedly connected inside the working cylinder cavity, wherein the top of the inner cylinder has a feed inlet, the bottom of the inner cylinder has a guide cylinder, a circulation channel is formed between the inner cylinder and the working cylinder, the guide cylinder has a discharge outlet connected to the circulation channel, a rotating shaft is rotatably connected to the working cylinder, a guide member is provided inside the guide cylinder, the conveying direction of the guide member is towards the discharge outlet, and a main stirring blade is provided on the outer wall of the rotating shaft, the main stirring blade is located inside the inner cylinder cavity.

[0007] To facilitate secondary stirring of the slurry during the circulation process, preferably, a stirring drum is fixedly connected to the inner wall of the inner cylinder, a through hole is opened at the bottom of the stirring drum, a sleeve is rotatably connected to the rotating shaft, an auxiliary stirring blade is fixedly connected to the outer wall of the sleeve, and the auxiliary stirring blade is arranged in the cavity of the stirring drum.

[0008] To facilitate the rotation of the shaft, a motor is fixedly connected to the working cylinder, and the shaft is fixedly connected to the output end of the motor.

[0009] To facilitate the guiding and conveying of liquid within the guide tube, the guide further includes a spiral plate fixedly connected to the outer wall of the rotating shaft, the spiral plate being in contact with the inner wall of the guide tube.

[0010] To facilitate the discharge of slurry from the working cylinder, preferably, a first drain pipe is provided at the bottom of the working cylinder, and the first drain pipe is connected to the cavity of the working cylinder.

[0011] To facilitate the discharge of slurry from the inner cylinder, preferably, a second drain pipe is provided at the bottom of the working cylinder, and the second drain pipe is connected to the cavity of the inner cylinder.

[0012] Compared with the prior art, the present invention provides a phosphate concentrate reslurry equipment, which has the following beneficial effects:

[0013] 1. This phosphate concentrate re-slurry equipment uses the centrifugal force generated by the rotation of the main stirring blades to drive the slurry movement. Combined with the guiding effect of the guide cylinder, it forms a composite motion mode of forced stirring in the inner cylinder and circulating reflux in the circulation channel. Compared with traditional single-shaft stirring, it can improve the uniformity of slurry mixing, thereby preventing the formation of mineral powder agglomerates and sinking of slurry in the working cylinder at low speed, and improving the stirring effect of mineral powder.

[0014] 2. This phosphate concentrate re-slurry equipment uses two sets of stirring blades rotating in opposite directions to repeatedly stir the slurry entering the mixing drum cavity, thereby forming a cyclic stirring effect and improving the mixing effect of mineral powder and liquid medium during circulation.

[0015] The parts not covered in this device are the same as or can be implemented using existing technologies. This utility model can enable the slurry to form a composite motion mode of forced stirring and circulating backflow in the working cylinder. Compared with traditional single-shaft stirring, it can improve the uniformity of slurry mixing, thereby preventing the formation of mineral powder agglomerates and sinking of slurry in the working cylinder at low speed, and improving the stirring effect of mineral powder. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the planar structure of a phosphate concentrate reslurry equipment proposed in this utility model;

[0017] Figure 2 This is a partial structural diagram of a phosphate concentrate reslurry equipment proposed in this utility model. Figure 1 ;

[0018] Figure 3 This is a partial structural diagram of a phosphate concentrate reslurry equipment proposed in this utility model. Figure 2 ;

[0019] Figure 4 This is a cross-sectional structural diagram of a phosphate concentrate re-slurry equipment proposed in this utility model.

[0020] In the diagram: 1. Working cylinder; 2. Inner cylinder; 3. Guide cylinder; 4. Discharge port; 5. Stirring cylinder; 6. Through hole; 7. Rotating shaft; 8. Spiral plate; 9. Main stirring blade; 10. Sleeve; 11. Auxiliary stirring blade; 12. First drain pipe; 13. Second drain pipe. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Phosphate concentrate is a key raw material for phosphate fertilizer companies to produce phosphoric acid and phosphate fertilizer. Its processing technology directly affects the efficiency of subsequent production and product quality. Currently, there are two main raw material processing models in the industry: one is for companies with a complete industrial chain, whose own phosphate ore beneficiation plants can directly produce phosphate concentrate slurry that meets the concentration requirements and transport it to the phosphoric acid production unit through pipelines; the other is for most companies to purchase phosphate concentrate powder and prepare it into a slurry that meets the requirements through a re-pulping process. The preparation of phosphate concentrate slurry mainly adopts a mechanical stirring and mixing process. In this process, phosphate concentrate powder and liquid medium (water or acidic solution) are added into the working cylinder 1 in a strict ratio and physically mixed to form a slurry with suitable fluidity. This process requires precise control of parameters such as solid-liquid ratio and viscosity to meet the specific requirements of subsequent flotation separation or acid leaching processes for slurry concentration.

[0024] Example:

[0025] Reference Figures 1-4A phosphate concentrate re-slurry equipment mainly adopts a mechanical stirring and mixing process. This process involves adding phosphate concentrate powder and a liquid medium (water or acidic solution) to a working cylinder 1 according to a strict ratio, and then preparing a slurry that meets the requirements through a slurrying process. An inner cylinder 2 is fixedly connected inside the cavity of the working cylinder 1. An inlet is provided at the top of the inner cylinder 2 for conveying the slurry circulating within the cavity of the working cylinder 1. A guide cylinder 3 is provided at the bottom of the inner cylinder 2, forming a circulation channel between the inner cylinder 2 and the working cylinder 1. An outlet 4 connected to the circulation channel is provided on the guide cylinder 3. A double-layer nested structure of the working cylinder 1 and the inner cylinder 2 is adopted, forming an annular circulation channel between the two containers. An inlet is provided at the top of the inner cylinder 2, and an outlet 4 is provided at the bottom. A guide cylinder 3 is provided, and a discharge port 4 is provided on the guide cylinder 3, thereby forming a slurry circulation path. This design achieves gradient mixing of slurry through physical barriers. At the same time, the guide cylinder 3 has built-in guide components to adjust the slurry flow direction, and a rotating shaft 7 is rotatably connected to the working cylinder 1. A guide component is provided inside the guide cylinder 3, and the conveying direction of the guide component is towards the discharge port 4. A main stirring blade 9 is provided on the outer wall of the rotating shaft 7. The main stirring blade 9 is located in the cavity of the inner cylinder 2 and is used to stir the slurry in the inner cylinder 2. The rotation generates centrifugal force to drive the slurry movement. Combined with the guiding effect of the guide cylinder 3, a composite motion mode of forced stirring in the inner cylinder 2 and circulation backflow in the circulation channel is formed, which can improve the uniformity of slurry mixing compared with traditional single-shaft stirring.

[0026] In the above scheme, a double-layer nested structure of working cylinder 1 and inner cylinder 2 is adopted, forming an annular circulation channel between the two containers. This design achieves gradient mixing of slurry through physical barrier. At the same time, the guide cylinder 3 has a built-in guide component to adjust the slurry flow direction, and a rotating shaft 7 is rotatably connected to the working cylinder 1. The guide cylinder 3 is equipped with a guide component, and the conveying direction of the guide component is towards the discharge port 4. The main stirring blade 9 is used to stir the slurry in the inner cylinder 2. The rotation generates centrifugal force to drive the slurry movement. Combined with the guiding effect of the guide cylinder 3, a composite motion mode of forced stirring in the inner cylinder 2 and circulation backflow in the circulation channel is formed. Compared with the traditional single-shaft stirring, it can improve the uniformity of slurry mixing, thereby preventing the formation of mineral powder agglomerates and sinking of slurry in the working cylinder 1 at low speed, and improving the stirring effect of mineral powder.

[0027] A stirring drum 5 is fixedly connected to the inner wall of the inner cylinder 2. A through hole 6 is opened at the bottom of the stirring drum 5. A sleeve 10 is rotatably connected to the rotating shaft 7. An auxiliary stirring blade 11 is fixedly connected to the outer wall of the sleeve 10. The auxiliary stirring blade 11 is set in the cavity of the stirring drum 5. Two sets of motors are also set at the top of the working drum 1. The rotating shaft 7 is fixedly connected to the output end of one set of motors. A connecting rod is also connected to the output end of the other set of motors. The connecting rod is connected to the sleeve 10 through a transmission pulley. The rotating shaft 7 and the sleeve 10 rotate in opposite directions. The two sets of motors drive the rotating shaft 7 (main stirring blade 9) and the sleeve 10 (auxiliary stirring blade 11) to rotate respectively. The two sets of stirring blades rotate in opposite directions. During this process, the slurry entering the cavity of the stirring drum 5 will be repeatedly stirred by the auxiliary stirring blade 11, thereby forming a reverse motion effect. The shear force generated by this can improve the mixing effect of mineral powder and liquid medium in the circulation process.

[0028] It should be explained that the aforementioned guide includes a spiral plate 8 fixedly connected to the outer wall of the rotating shaft 7. The spiral plate 8 is in contact with the inner wall of the guide cylinder 3. The spiral plate 8 is fixed to the outer wall of the rotating shaft 7 and keeps in contact with the inner wall of the guide cylinder 3. When rotating, the spiral curved surface structure generates directional thrust, which forces the slurry to be transported axially to the discharge port 4, forming a stable slurry circulation effect. In addition, in order to optimize fluid dynamics, the gap between the spiral plate 8 and the inner wall of the guide cylinder 3 is controlled at 0.5mm-2mm, which avoids slurry backflow and reduces mechanical friction loss. This design can improve the efficiency of slurry transportation, reduce the power consumption of the rotating shaft 7, and the continuous pushing action of the spiral plate 8 can prevent mineral powder from depositing at the bottom of the working cylinder 1.

[0029] In addition, a first drain pipe 12 is provided at the bottom of the working cylinder 1, which is connected to the cavity of the working cylinder 1. A second drain pipe 13 is provided at the bottom of the working cylinder 1, which is connected to the cavity of the inner cylinder 2. Control valves are provided on the first drain pipe 12 and the second drain pipe 13 for discharging the slurry in the working cylinder 1 and the inner cylinder 2.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A phosphate concentrate reslurry equipment, comprising a working cylinder (1), characterized in that, The inner cylinder (2) is fixedly connected inside the cavity of the working cylinder (1). The inner cylinder (2) has a feed inlet at the top and a guide cylinder (3) at the bottom. A circulation channel is formed between the inner cylinder (2) and the working cylinder (1). A discharge port (4) connected to the circulation channel is provided on the guide cylinder (3). A rotating shaft (7) is rotatably connected to the working cylinder (1). A guide is provided inside the guide cylinder (3). The conveying direction of the guide is towards the discharge port (4). A main stirring blade (9) is provided on the outer wall of the rotating shaft (7). The main stirring blade (9) is located inside the cavity of the inner cylinder (2).

2. The phosphate concentrate reslurry equipment according to claim 1, characterized in that, A stirring cylinder (5) is fixedly connected to the inner wall of the inner cylinder (2). A through hole (6) is opened at the bottom of the stirring cylinder (5). A sleeve (10) is rotatably connected to the rotating shaft (7). An auxiliary stirring blade (11) is fixedly connected to the outer wall of the sleeve (10). The auxiliary stirring blade (11) is set in the cavity of the stirring cylinder (5).

3. The phosphate concentrate reslurry equipment according to claim 2, characterized in that, A motor is fixedly connected to the working cylinder (1), and the rotating shaft (7) is fixedly connected to the output end of the motor.

4. The phosphate concentrate reslurry equipment according to claim 1, characterized in that, The guide includes a spiral plate (8) fixedly connected to the outer wall of the rotating shaft (7), and the spiral plate (8) is in contact with the inner wall of the guide cylinder (3).

5. The phosphate concentrate reslurry equipment according to claim 1, characterized in that, The bottom of the working cylinder (1) is provided with a first drain pipe (12), which is connected to the cavity of the working cylinder (1).

6. The phosphate concentrate reslurry equipment according to claim 5, characterized in that, The bottom of the working cylinder (1) is provided with a second drain pipe (13), which is connected to the cavity of the inner cylinder (2).

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