Drying device for preparing magnesium hydroxide from flotation tailings

Abstract

The utility model discloses a drying device for preparing magnesium hydroxide from flotation tailings, which comprises an outer cylinder body, an inner cylinder body rotatably connected in the outer cylinder body, a plurality of water outlet holes arranged on the inner cylinder body, a water filter screen fixed on the inner side of the inner cylinder body, and a rotation driving mechanism arranged at the bottom of the outer cylinder body and used for driving the inner cylinder body to rotate, the scattering mechanism is detachably installed at the top of the outer barrel and used for being inserted into the inner barrel, the air supply mechanism is installed on the outer barrel and used for blowing air to the inner barrel, the scattering mechanism comprises a disc, an inserting frame and a scattering frame, the inserting frame and the scattering frame are fixed to the disc, and a clamping groove used for inserting the inserting frame is formed in the top of the outer barrel. According to the magnesium hydroxide drying device, the water content of magnesium hydroxide is reduced through centrifugal dewatering, then water is further taken away through heating and blowing, and the magnesium hydroxide is scattered during heating and drying, so that the water is more easily discharged, and the drying efficiency is higher.

Description

Technical Field

[0001] This utility model relates to the field of magnesium hydroxide preparation technology, and in particular to a drying device for producing magnesium hydroxide from flotation tailings. Background Technology

[0002] Magnesium hydroxide can be obtained from flotation tailings of magnesite through acid leaching, impurity removal, and precipitation. The magnesium hydroxide obtained after precipitation contains a large amount of water and needs to be dried. Existing drying equipment often directly heats the magnesium hydroxide for drying. However, due to the high water content of the magnesium hydroxide in the initial heating stage, drying efficiency is low by heating alone. Furthermore, the magnesium hydroxide remains largely stationary during heating, resulting in slow water removal from the clumps, further affecting drying efficiency. Therefore, there is an urgent need to develop a drying device for producing magnesium hydroxide from flotation tailings that first reduces the water content through centrifugal dehydration, then further removes water through heating and air blowing, and further disperses the magnesium hydroxide during heating to facilitate water removal, thus achieving higher drying efficiency. This device would overcome the shortcomings of current applications and meet current needs. Utility Model Content

[0003] The purpose of this invention is to provide a drying device for producing magnesium hydroxide from flotation tailings, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A drying device for producing magnesium hydroxide from flotation tailings includes an outer cylinder, a dispersing mechanism, a pulse controller, an inner cylinder, an electric heater, a rotary drive mechanism, and an air supply mechanism. The inner cylinder is rotatably connected to the outer cylinder and has multiple water outlet holes. A filter screen is fixed to the inner side of the inner cylinder. The rotary drive mechanism is installed at the bottom of the outer cylinder and drives the inner cylinder to rotate. The rotary drive mechanism includes a servo motor, a first gear, a second gear, and a support shaft. The servo motor is fixed to the bottom of the outer cylinder, and the first gear is fixed to the output shaft of the servo motor. A support shaft is provided on one side of the first gear. A second gear meshes with the outer cylinder, the second gear is fixed on the support shaft, the support shaft is rotatably connected to the outer cylinder, the upper end of the support shaft is fixed to the inner cylinder, the pulse controller is installed on the top of the outer cylinder, the servo motor is electrically connected to the pulse controller, the disintegration mechanism is detachably installed on the top of the outer cylinder, the disintegration mechanism is used to insert into the inner cylinder, the air supply mechanism is installed on the outer cylinder and is used to blow air into the inner cylinder, the disintegration mechanism includes: a disc, a connector, and a disintegration frame, the connector and the disintegration frame are respectively fixed to the disc, and the top of the outer cylinder is provided with a slot for inserting the connector.

[0006] Preferably, the bottom of the outer cylinder is provided with a drainage hole.

[0007] Preferably, a heat insulation layer is fixedly provided on the inner side of the outer cylinder, and the electric heater is fixedly installed on the inner side of the heat insulation layer.

[0008] Preferably, the air supply mechanism includes a fan, a distribution pipe, and air nozzles. The fan is fixed to the outer cylinder, the air outlet of the fan is connected to the distribution pipe, and multiple air nozzles are installed on the distribution pipe, with the air nozzles facing the inner cylinder.

[0009] Preferably, the top of the inner cylinder is detachably connected to a top cover via threads.

[0010] The beneficial effects of this utility model are as follows: In the drying device for producing magnesium hydroxide from flotation tailings, the magnesium hydroxide to be dried is first added to the inner cylinder, and the top cover is closed. At this time, the dispersing mechanism is not inserted into the inner cylinder. Then, the servo motor is controlled to rotate at 2000 rpm by a pulse controller. The servo motor drives the first gear, the second gear, and the support shaft to rotate, which in turn drives the inner cylinder to rotate. Under the action of centrifugal force, the water in the magnesium hydroxide is forced through the filter screen and the outlet hole, and then discharged from the drain hole. After centrifugal dehydration is completed, the servo motor is turned off first, and then the top cover is removed. Then, the dispersing mechanism is removed, and the dispersing frame is inserted into the inner cylinder, with the insertion frame snapping into the slot. At this point, there is a gap between the disc and the inner wall of the inner cylinder to allow moisture to escape. Then, the servo motor is controlled to rotate at 10 revolutions per minute by a pulse controller, and the heater and fan are started. The heater heats the magnesium hydroxide, and the fan blows air onto the magnesium hydroxide to remove moisture. Simultaneously, the servo motor drives the first gear, the second gear, the support shaft, and the inner cylinder to rotate. The inner cylinder drives the magnesium hydroxide inside to rotate, and as the magnesium hydroxide rotates, it comes into contact with the dispersing frame and is dispersed, allowing moisture to escape and improving drying efficiency. In summary, this invention first reduces the water content of magnesium hydroxide through centrifugal dehydration, then further removes moisture through heating and blowing air. Furthermore, the magnesium hydroxide is dispersed during heating and drying, making it easier for moisture to escape and resulting in higher drying efficiency. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0012] Figure 2 This is a schematic diagram of the usage state of this utility model.

[0013] Figure 3 This utility model Figure 3 Internal sectional view.

[0014] Figure 4 This is a partial structural diagram of the present invention. Figure 1 .

[0015] Figure 5 This utility model Figure 4 A diagram illustrating the split state.

[0016] Figure 6 This is a partial structural diagram of the present invention. Figure 2 .

[0017] Figure 7 This is a partial structural diagram of the present invention. Figure 3 .

[0018] Figure 8 This is a partial structural diagram of the present invention. Figure 4 .

[0019] Legend:

[0020] 1. Outer cylinder; 101. Insulation layer; 102. Slot; 103. Drain hole; 2. Disintegration mechanism; 201. Disc; 202. Connector; 203. Disintegration frame; 3. Pulse controller; 4. Inner cylinder; 401. Water outlet; 402. Filter screen; 403. Top cover; 5. Electric heater; 6. Rotary drive mechanism; 601. Servo motor; 602. First gear; 603. Second gear; 604. Support shaft; 7. Air supply mechanism; 701. Fan; 702. Diverter pipe; 703. Nozzle. 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] Specific implementation examples are given below.

[0023] See Figures 1 to 8In this embodiment of the present invention, a drying device for producing magnesium hydroxide from flotation tailings includes an outer cylinder 1, a dispersing mechanism 2, a pulse controller 3, an inner cylinder 4, an electric heater 5, a rotary drive mechanism 6, and an air supply mechanism 7. The outer cylinder 1 is fixed to the ground, and a heat insulation layer 101 is fixedly provided on the inner side of the outer cylinder 1. The electric heater 5 is fixedly installed on the inner side of the heat insulation layer 101. The inner cylinder 4 is rotatably connected to the outer cylinder 1 and is used to hold magnesium hydroxide. The inner cylinder 4 is provided with multiple water outlet holes 401, and a water filter screen 402 is fixed on the inner side of the inner cylinder 4. The diameter of the water filter screen 402 is 0.1-0.3mm, allowing water to pass through while preventing magnesium hydroxide from passing through. A top cover 403 is detachably connected to the top of the inner cylinder 4 by threads. The rotary drive mechanism 6 is installed at the bottom of the outer cylinder 1 and is used to drive the inner cylinder 4 to rotate. The rotary drive mechanism 6 includes a servo motor. The system comprises: 601, a first gear 602, a second gear 603, and a support shaft 604. The servo motor 601 is fixed to the bottom of the outer cylinder 1. The first gear 602 is fixed on the output shaft of the servo motor 601. A second gear 603 meshes with the first gear 602 on one side. The second gear 603 is fixed to the support shaft 604. The support shaft 604 is rotatably connected to the outer cylinder 1, and a sealing ring (not shown) is provided at the connection to prevent water leakage. The upper end of the support shaft 604 is fixed to the inner cylinder 4. The pulse controller 3 is installed on the top of the outer cylinder 1. The servo motor 601 is electrically connected to the pulse controller 3, and the pulse controller 3 controls the rotational speed of the servo motor 601. The dispersing mechanism 2 is detachably installed on the top of the outer cylinder 1 and is used to insert into the inner cylinder 4. The air supply mechanism 7 is installed on the outer cylinder 1 and is used to blow air into the inner cylinder 4.

[0024] The disassembly mechanism 2 includes a disc 201, a connector 202, and a disassembly frame 203. The connector 202 and the disassembly frame 203 are respectively fixed to the disc 201. The top of the outer cylinder 1 is provided with a slot 102 for inserting the connector 202.

[0025] The bottom of the outer cylinder 1 is provided with a drain hole 103, which is used for the water discharged during centrifugation.

[0026] The air supply mechanism 7 includes a fan 701, a diversion pipe 702, and a blower nozzle 703. The fan 701 is fixed on the outer cylinder 1. The air outlet of the fan 701 is connected to the diversion pipe 702. Multiple blower nozzles 703 are installed on the diversion pipe 702, and the blower nozzles 703 face the inner cylinder 4.

[0027] The switch buttons for the aforementioned electric heater 5 and fan 701 are installed on the outer cylinder 1 (not shown in the figure).

[0028] Working Principle: This drying device for producing magnesium hydroxide from flotation tailings operates as follows: First, the magnesium hydroxide to be dried is added to the inner cylinder 4, and the top cover 403 is placed on top. At this time, the dispersing mechanism 2 is not inserted into the inner cylinder 4. Then, the pulse controller 3 controls the servo motor 601 to rotate at 2000 rpm. The servo motor 601 drives the first gear 602, the second gear 603, and the support shaft 604 to rotate. The support shaft 604 then drives the inner cylinder 4 to rotate. Under the action of centrifugal force, the water in the magnesium hydroxide is forced through the filter screen 402 and the outlet hole 401 and discharged. The water then flows out from the drain hole 103. After centrifugal dehydration, the servo motor 601 is turned off first, then the top cover 403 is removed. Then, the... The lower dispersing mechanism 2 then inserts the dispersing frame 203 into the inner cylinder 4 and makes the insertion frame 202 snap into the slot 102. At this time, there is a gap between the disc 201 and the inner wall of the inner cylinder 4 so that water vapor can be discharged. Then, the pulse controller 3 controls the speed of the servo motor 601 to 10 revolutions per minute, starts the electric heater 5 and the fan 701. The electric heater 5 heats the magnesium hydroxide, and the fan 701 blows air onto the magnesium hydroxide to remove the water vapor. At the same time, the servo motor 601 drives the first gear 602, the second gear 603, the support shaft 604 and the inner cylinder 4 to rotate. The inner cylinder 4 drives the magnesium hydroxide inside to rotate. When the magnesium hydroxide rotates, it comes into contact with the dispersing frame 203 and is dispersed so that the moisture can be discharged and the drying efficiency can be improved.

[0029] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[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 drying apparatus for producing magnesium hydroxide from flotation tailings, characterized in that, The system includes an outer cylinder (1), a dispersing mechanism (2), a pulse controller (3), an inner cylinder (4), an electric heater (5), a rotary drive mechanism (6), and an air supply mechanism (7). The inner cylinder (4) is rotatably connected to the outer cylinder (1). The inner cylinder (4) is provided with multiple water outlets (401). A water filter screen (402) is fixed on the inner side of the inner cylinder (4). The rotary drive mechanism (6) is installed at the bottom of the outer cylinder (1) and is used to drive the inner cylinder (4) to rotate. The rotary drive mechanism (6) includes a servo motor (601), a first gear (602), a second gear (603), and a support shaft (604). The servo motor (601) is fixed at the bottom of the outer cylinder (1). The first gear (602) is fixed on the output shaft of the servo motor (601). A second gear (603) is provided on one side of the first gear (602) to mesh with it. The second gear (603) is fixed on the support shaft (604), which is rotatably connected to the outer cylinder (1). The upper end of the support shaft (604) is fixed to the inner cylinder (4). The pulse controller (3) is installed on the top of the outer cylinder (1), and the servo motor (601) is electrically connected to the pulse controller (3). The dispersing mechanism (2) is detachably installed on the top of the outer cylinder (1). The air supply mechanism (7) is installed on the outer cylinder (1) and is used to blow air into the inner cylinder (4). The disintegration mechanism (2) includes: a disc (201), a connector (202) and a disintegration frame (203). The connector (202) and the disintegration frame (203) are fixed to the disc (201) respectively. The top of the outer cylinder (1) is provided with a slot (102) for inserting the connector (202).

2. The drying apparatus for producing magnesium hydroxide from flotation tailings according to claim 1, characterized in that, The bottom of the outer cylinder (1) is provided with a drainage hole (103).

3. The drying apparatus for producing magnesium hydroxide from flotation tailings according to claim 1, characterized in that, A heat insulation layer (101) is fixedly provided on the inner side of the outer cylinder (1), and the electric heater (5) is fixedly installed on the inner side of the heat insulation layer (101).

4. The drying apparatus for producing magnesium hydroxide from flotation tailings according to claim 1, characterized in that, The air supply mechanism (7) includes: a fan (701), a diversion pipe (702) and a blower nozzle (703). The fan (701) is fixed on the outer cylinder (1). The air outlet of the fan (701) is connected to the diversion pipe (702). Multiple blower nozzles (703) are installed on the diversion pipe (702). The blower nozzles (703) face the inner cylinder (4).

5. The drying apparatus for producing magnesium hydroxide from flotation tailings according to claim 1, characterized in that, The top of the inner cylinder (4) is detachably connected to a top cover (403) by threads.

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