Coal flotation system and method

Abstract

The invention relates to the technical field of coal treatment, in particular to a coal flotation system and method.The coal flotation system comprises a flotation cavity and a slag discharging square opening formed below the flotation cavity, the slag discharging square opening is slidably connected with a slag discharging sliding plate, and the slag discharging sliding plate is evenly slidably connected with a plurality of liquid discharging sliding columns; the lower portions of the liquid discharging sliding columns are fixedly connected with transverse supporting sliding plates, the front end and the rear end of the flotation cavity are fixedly connected with supporting fixing legs, the left end and the right end of the flotation cavity are fixedly connected with transverse fixing supporting plates, the two transverse fixing supporting plates are slidably connected with bearing sliding columns, and the two bearing sliding columns are fixedly connected with the slag discharging sliding plate. The two bearing sliding columns are both sleeved with tension springs, the upper ends of the two tension springs are fixedly connected with the two transverse fixed supporting plates correspondingly, the lower portions of the two tension springs are both fixedly connected with a slag discharging sliding plate, the left end and the right end of the flotation cavity are both fixedly connected with fixed supporting transverse plates, clean coal, coal slag and liquid can be rapidly separated through the system, and the coal flotation efficiency is further improved.

Description

Technical Field

[0001] This invention relates to the field of coal processing technology, and more specifically to a coal flotation system and method. Background Technology

[0002] Coal is a solid combustible mineral formed gradually from ancient plants buried underground through complex biochemical and physicochemical changes. Coal is known as black gold and the food of industry. Although the value of coal is not as high as before, it will still be one of the essential energy sources for human production and life for a long time. The supply of coal is also related to the stability of my country's industrial development and even the development of all aspects of society. The security of coal supply is also the most important link in my country's energy security. Coal flotation is the most important part of coal processing. Coal flotation refers to the separation of coal slime in an aerated slurry based on the wettability of particle surfaces. However, the existing flotation system cannot quickly separate clean coal, coal slag and liquid, resulting in low flotation efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a coal flotation system and method that can quickly separate clean coal, coal slag and liquid, thereby further improving the efficiency of coal flotation.

[0004] A coal flotation system includes a flotation cavity and a slag discharge port located below the flotation cavity. A slag discharge slide plate is slidably connected to the slag discharge port. Multiple liquid discharge slide columns are slidably connected to the slag discharge slide plate. A horizontal support slide plate is fixedly connected below the multiple liquid discharge slide columns. Support legs are fixedly connected to both the front and rear ends of the flotation cavity.

[0005] Furthermore, both ends of the flotation cavity are fixedly connected to horizontal support plates, and both horizontal support plates are slidably connected to supporting slide columns. Both supporting slide columns are fixedly connected to the slag discharge slide plate, and both supporting slide columns are fitted with tension springs. The upper ends of the two tension springs are fixedly connected to the two horizontal support plates respectively, and the lower ends of the two tension springs are fixedly connected to the slag discharge slide plate.

[0006] Furthermore, both ends of the flotation cavity are fixedly connected to a support plate, both of which are fixedly connected to a telescopic rod, and both of which are fixedly connected to a squeezing column. Both of the squeezing columns are fixedly connected to the horizontal support slide plate.

[0007] Furthermore, both of the extrusion columns are fixedly connected with transverse extrusion plates.

[0008] Furthermore, a horizontal stirring rod is rotatably connected to the flotation cavity, and multiple stirring plates I are uniformly fixedly connected to the horizontal stirring rod. A reduction motor I is fixedly connected to the flotation cavity, and the output shaft of the reduction motor I is fixedly connected to the horizontal stirring rod.

[0009] Furthermore, a support frame plate is fixedly connected to the flotation cavity, a reduction motor II is fixedly connected to the support frame plate, a lifting screw is fixedly connected to the output shaft of the reduction motor II, a take-out strainer is threadedly connected to the lifting screw, and two limiting slides are fixedly connected to the take-out strainer, both of which are slidably connected to the support frame plate.

[0010] Furthermore, two vertical stirring tanks are fixedly connected to the support frame plate.

[0011] Furthermore, each of the two stirring vertical barrels is fixedly connected to a bearing seat, and each of the two bearing seats is rotatably connected to a stirring vertical shaft, and each of the two stirring vertical shafts is uniformly fixedly connected to a plurality of stirring plates II.

[0012] Furthermore, a horizontal solid cavity is fixedly connected to the support frame plate, and a double-headed motor is fixedly connected to the horizontal solid cavity. A bevel gear shaft is fixedly connected to each of the two output shafts of the double-headed motor. The two bevel gear shafts are rotatably connected to the two stirring vertical barrels respectively, and the two bevel gear shafts are meshed and driven by the two stirring vertical shafts respectively.

[0013] Furthermore, the flotation method of the coal flotation system includes the following steps:

[0014] Step 1: Add coal slime to the mixing tank in the form of slurry, and add water to adjust it to an appropriate concentration to achieve slurry preparation;

[0015] Step 2: Place the prepared slurry into the flotation chamber, add the frother and collector into the flotation chamber, and stir thoroughly. During the stirring process, a strong stirring force will be generated, which will start the aeration of the flotation chamber.

[0016] Step 3: A large number of bubbles of varying sizes are generated in the slurry. The hydrophobic coal particles adhere to the bubbles due to the adsorption of the collector and are carried to the surface of the slurry by the bubbles to form a so-called mineralized foam layer, which is located above the flotation cavity. After being removed, it is clean coal.

[0017] Step 4: When the hydrophilic gangue particles do not react with the collector and do not adhere to the air bubbles, they remain in the slurry and become flotation tailings, also known as coal slag.

[0018] Step 5: After the clean coal is taken out, the horizontal support slide plate drives multiple liquid discharge slide columns to move downwards, so that the multiple liquid discharge slide columns are separated from the slag discharge slide plate, and the liquid in the flotation cavity can be discharged.

[0019] Step Six: Move the slag discharge slide downwards to disengage it from the slag discharge opening. The slag discharge opening will then be exposed, and the coal slag in the flotation cavity will be discharged through the slag discharge opening. Attached Figure Description

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0021] Figure 1 This is a schematic diagram of the overall structure of a coal flotation system according to the present invention;

[0022] Figure 2 This is a partial structural diagram of a coal flotation system;

[0023] Figure 3 This is a schematic diagram of a flotation embodiment of ore slurry;

[0024] Figure 4 This is a cross-sectional structural diagram of an embodiment of flotation of ore slurry;

[0025] Figure 5 This is a schematic diagram of a structure for an embodiment of liquid and slag discharge;

[0026] Figure 6 This is a partial structural diagram of an embodiment for discharging liquid and slag. Figure 1 ;

[0027] Figure 7 This is a partial structural diagram of an embodiment for discharging liquid and slag. Figure 2 ;

[0028] Figure 8 This is a schematic diagram of an embodiment for processing coal slime and moving clean coal upwards;

[0029] Figure 9 This is a schematic diagram of the structure of an embodiment that drives the refined coal to move upward;

[0030] Figure 10 This is a schematic cross-sectional view of an embodiment of coal slime treatment. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings.

[0032] The following is in conjunction with the appendix Figure 1-7 Detailed description: A coal flotation system includes a flotation cavity 101 and a slag discharge port 102 disposed below the flotation cavity 101. A slag discharge slide plate 103 is slidably connected to the slag discharge port 102. Multiple liquid discharge slide columns 104 are evenly slidably connected to the slag discharge slide plate 103. A horizontal support slide plate 105 is fixedly connected to the bottom of the multiple liquid discharge slide columns 104 by welding. Support legs 106 are fixedly connected to both the front and rear ends of the flotation cavity 101 by welding.

[0033] Furthermore, the flotation process of coal is completed within the flotation cavity 101. The flotated coal slag is discharged through the discharge port 102, and the discharge port 102 is sealed using the discharge slide plate 103. When it is necessary to remove the remaining coal slag, the discharge slide plate 103 can be slid downwards to expose the discharge port 102. The discharge slide plate 103 is provided with multiple drainage holes, through which the liquid in the flotation cavity 101 is discharged. Multiple drainage slide columns 104 can be used to seal the multiple drainage holes on the discharge slide plate 103. The horizontal support slide plate 105 can simultaneously drive the multiple drainage slide columns 104 to slide up and down. The two supporting legs 106 can be used to support and fix the flotation cavity 101, so that the flotation cavity 101 can be placed stably on the ground.

[0034] Coal slime is added to the mixing tank in slurry form, and water is added to adjust the concentration to an appropriate level. The adjusted slurry is then placed into the flotation chamber 101. A frother and collector are added to the flotation chamber 101, and the mixture is thoroughly stirred. During stirring, a strong agitation force is generated, initiating the aeration of the flotation chamber 101. This produces a large number of bubbles of varying sizes in the slurry. Hydrophobic coal particles, due to the adsorption of the collector, adhere to the bubbles and are carried to the slurry surface, agglomerating into a so-called mineralized froth layer above the flotation chamber 101. This layer, once removed, is clean coal. When hydrophilic gangue particles do not interact with the collector... The slag does not adhere to the air bubbles and remains in the slurry, becoming flotation tailings, also known as coal slag. After the clean coal is removed, the horizontal sliding plate 105 drives multiple liquid discharge slide columns 104 to move downwards, causing the multiple liquid discharge slide columns 104 to separate from the slag discharge sliding plate 103, thus discharging the liquid in the flotation cavity 101. The liquid is then stored using a collection device. After the liquid is discharged, the slag discharge sliding plate 103 is moved downwards, causing the slag discharge sliding plate 103 to separate from the slag discharge square opening 102. The slag discharge square opening 102 will then be exposed, and the coal slag in the flotation cavity 101 will be discharged through the slag discharge square opening 102. The coal slag is then stored using another collection device.

[0035] The following is in conjunction with the appendix Figure 1-6 In detail, both ends of the flotation cavity 101 are fixedly connected to horizontal support plates 201 by welding. Each horizontal support plate 201 is slidably connected to a supporting slide column 202 through a round hole. Both supporting slide columns 202 are fixedly connected to the slag discharge slide plate 103 by welding. Each supporting slide column 202 is fitted with a tension spring 203. The upper ends of the two tension springs 203 are fixedly connected to the two horizontal support plates 201 by welding, and the lower ends of the two tension springs 203 are fixedly connected to the slag discharge slide plate 103 by welding.

[0036] Furthermore, the two horizontal support plates 201 provide sliding space for the two supporting sliding columns 202, which in turn limit the slag discharge slide plate 103, allowing it to slide only up and down. The two supporting sliding columns 202 also provide space for the two tension springs 203 to be fitted onto each other. Because the upper parts of the two tension springs 203 are fixedly connected to the two horizontal support plates 201, the upper parts of the two tension springs 203 are fixed, and the two tension springs 203 produce… The pulling force can be applied to the slag discharge slide plate 103, which pulls the slag discharge slide plate 103 into the slag discharge opening 102, thus sealing the slag discharge opening 102. When it is necessary to discharge the slag, simply press down on the slag discharge slide plate 103, and the slag discharge slide plate 103 will disengage from the slag discharge opening 102. After releasing the slag discharge slide plate 103, it will slide back into the slag discharge opening 102, thus sealing the slag discharge opening 102 again.

[0037] The following is in conjunction with the appendix Figure 1-5 In detail in section 7, both ends of the flotation cavity 101 are fixedly connected to the support plate 301 by welding. Both support plates 301 are fixedly connected to the telescopic rod 302 by flange plate. Both telescopic rods 302 are fixedly connected to the extrusion shift column 303 by flange plate. Both extrusion shift columns 303 are fixedly connected to the cross support slide plate 105 by screws.

[0038] Furthermore, the two fixed support plates 301 can provide a fixed space for the two telescopic rods 302, and the two telescopic rods 302 can drive the two extrusion shifting columns 303 to extend and retract. When the two extrusion shifting columns 303 move, they can drive the horizontal support slide plate 105 to move downward. The downward movement of the horizontal support slide plate 105 can disengage the multiple liquid discharge slide columns 104 from the slag discharge slide plate 103, thus completing the discharge of liquid from the flotation cavity 101.

[0039] According to the instruction manual Figure 1-5 As detailed in section 7, both extrusion columns 303 are fixedly connected to transverse extrusion plates 401 by welding.

[0040] Furthermore, the two extrusion columns 303 can drive the two transverse contact extrusion plates 401 to move downward. After the two extrusion columns 303 move downward a certain distance, the two transverse contact extrusion plates 401 will contact the slag discharge slide plate 103, thereby achieving the pressing treatment of the slag discharge slide plate 103. At this time, the slag discharge slide plate 103 will slide away from the slag discharge square opening 102. Both telescopic rods 302 have two movable rods. After the first movable rod is extended, multiple liquid discharge columns 104 are disengaged from the slag discharge slide plate 103, completing the discharge of liquid. After the second movable rod is extended, the slag discharge slide plate 103 is disengaged from the slag discharge square opening 102, completing the discharge of coal slag. When the two telescopic rods 302 are completely retracted, the slag discharge slide plate 103 and the transverse support slide plate 105 can return to their original positions.

[0041] According to the instruction manual Figure 1-4 In detail, a horizontal stirring rod 501 is rotatably connected to the flotation cavity 101 through a round hole. Multiple stirring plates I502 are uniformly and fixedly connected to the horizontal stirring rod 501 by welding. A reduction motor I503 is fixedly connected to the flotation cavity 101 through a flange plate. The output shaft of the reduction motor I503 is fixedly connected to the horizontal stirring rod 501 through a keyway and a snap ring.

[0042] Furthermore, after starting the geared motor I503, the horizontal stirring rod 501 will rotate, and the rotating horizontal stirring rod 501 will drive multiple stirring plates I502 to rotate. The rotating multiple stirring plates I502 will be used to stir the slurry in the flotation cavity 101. During the stirring process, a strong stirring force will be generated, which will play a role in aeration and generate bubbles. A large number of bubbles of different sizes will be generated in the slurry. Hydrophobic coal particles will adhere to the bubbles due to the adsorption of the collector and will be carried to the surface of the slurry by the bubbles to form a so-called mineralized foam layer, which is located above the flotation cavity 101. After being removed, it is clean coal. When the hydrophilic gangue particles do not react with the collector and do not adhere to the bubbles, they will remain in the slurry and become flotation tailings, which are also known as coal slag.

[0043] According to the instruction manual Figure 1 , 8 In detail in section 9, a support frame plate 601 is fixedly connected to the flotation cavity 101 by welding. A reduction motor II 602 is fixedly connected to the support frame plate 601 by a flange plate. A lifting screw 603 is fixedly connected to the output shaft of the reduction motor II 602 by a keyway and a snap ring. A take-out strainer 604 is threadedly connected to the lifting screw 603. Two limiting slides 605 are fixedly connected to the take-out strainer 604 by welding. Both limiting slides 605 are slidably connected to the support frame plate 601 through round holes.

[0044] Furthermore, the support frame plate 601 provides a fixed space for the geared motor II 602. After starting the geared motor II 602, it drives the lifting screw 603 to rotate. The rotating lifting screw 603 will drive the extraction plate 604 to rise and fall. When the extraction plate 604 moves upward, the clean coal above the flotation cavity 101 can be extracted. The extraction plate 604 can be limited by two limiting slides 605, so that the extraction plate 604 can only slide up and down. The flotation cavity 101 is provided with two protrusions. The extraction plate 604 is located in the two protrusions on the flotation cavity 101. At this time, the bubbles generated can rise through the two protrusions on the flotation cavity 101 and move to the top of the flotation cavity 101. When the bubbles have fully risen, the extraction plate 604 will move upward and slide to connect with the flotation cavity 101, so that the bubbles can be lifted and extracted, completing the extraction and collection of clean coal.

[0045] According to the instruction manual Figure 1 , 8 As detailed in section 10, two stirring vertical tanks 701 are fixedly connected to the support frame plate 601 by welding.

[0046] Furthermore, valves are installed on both stirring vertical tanks 701, allowing coal slime to be added into them and its concentration adjusted using water. Foaming agents and collectors are also added to the two stirring vertical tanks 701, and the mixture is stirred again to prepare the slurry. By opening the valves on the two stirring vertical tanks 701, the slurry in the two stirring vertical tanks 701 will fall into the flotation cavity 101, where the flotation process of the slurry is completed.

[0047] According to the instruction manual Figure 1 , 8 In detail with reference to 10, each of the two stirring vertical tanks 701 is fixedly connected to a bearing seat 801 by welding. Each of the two bearing seats 801 is rotatably connected to a stirring vertical shaft 802 through a bearing hole. Each of the two stirring vertical shafts 802 is uniformly fixedly connected to a stirring plate II 903 by welding.

[0048] Furthermore, the two bearing seats 801 can provide space for the two stirring vertical shafts 802 to rotate, and the two stirring vertical shafts 802 can provide space for the two sets of multiple stirring plates II903 to be fixed. The rotation of the two sets of multiple stirring plates II903 is used to stir the raw materials in the two stirring vertical barrels 701 to achieve the preparation of slurry.

[0049] According to the instruction manual Figure 1 and 8-10 Detailed description: A horizontal solid cavity 901 is fixedly connected to the support frame plate 601 by welding. A double-headed motor 902 is fixedly connected to the horizontal solid cavity 901 by a flange plate. A bevel gear shaft 903 is fixedly connected to each of the two output shafts of the double-headed motor 902 by a keyway and a snap ring. The two bevel gear shafts 903 are rotatably connected to the two stirring vertical tanks 701 through round holes, and the two bevel gear shafts 903 are meshed and driven by the two stirring vertical shafts 802.

[0050] Furthermore, the horizontal solid cavity 901 provides a fixed space for the dual-head motor 902. After the dual-head motor 902 is started, it can drive the two bevel gear shafts 903 to rotate. The two vertical stirring shafts 802 are fixedly connected to the top of each of the two vertical stirring shafts 701. The two bevel gear shafts 903 are respectively meshed with the two bevel gears for transmission. The rotating two bevel gear shafts 903 can drive the two vertical stirring shafts 802 to rotate, thereby completing the stirring process of the raw materials in the two vertical stirring tanks 701.

[0051] The flotation method of the coal flotation system includes the following steps:

[0052] Step 1: Add coal slime to the mixing tank in the form of slurry, and add water to adjust it to an appropriate concentration to achieve slurry preparation;

[0053] Step 2: Place the prepared slurry into the flotation chamber 101, add the frother and collector into the flotation chamber 101, and stir thoroughly. During the stirring process, a strong stirring force will be generated, which will start the aeration of the flotation chamber 101.

[0054] Step 3: A large number of bubbles of varying sizes are generated in the slurry. The hydrophobic coal particles adhere to the bubbles due to the adsorption of the collector and are carried to the surface of the slurry by the bubbles to form a so-called mineralized foam layer, which is located above the flotation cavity 101. After being removed, it is clean coal.

[0055] Step 4: When the hydrophilic gangue particles do not react with the collector and do not adhere to the air bubbles, they remain in the slurry and become flotation tailings, also known as coal slag.

[0056] Step 5: After the clean coal is taken out, the horizontal support slide plate 105 drives multiple liquid discharge slide columns 104 to move downward, so that the multiple liquid discharge slide columns 104 are separated from the slag discharge slide plate 103, and the liquid in the flotation cavity 101 can be discharged.

[0057] Step 6: Move the slag discharge slide plate 103 downwards to disengage it from the slag discharge port 102. The slag discharge port 102 will then be exposed, and the coal slag in the flotation cavity 101 will be discharged through the slag discharge port 102.

Claims

1. A coal flotation system, characterized in that: It includes a flotation cavity (101) and a slag discharge port (102) located below the flotation cavity (101). A slag discharge slide plate (103) is slidably connected to the slag discharge port (102). Multiple liquid discharge slide columns (104) are evenly slidably connected to the slag discharge slide plate (103). A horizontal support slide plate (105) is fixedly connected below the multiple liquid discharge slide columns (104). Support legs (106) are fixedly connected to both the front and rear ends of the flotation cavity (101).

2. The coal flotation system according to claim 1, characterized in that: Both ends of the flotation cavity (101) are fixedly connected to horizontal support plates (201). Each horizontal support plate (201) is slidably connected to a supporting slide column (202). Both supporting slide columns (202) are fixedly connected to the slag discharge slide plate (103). Each supporting slide column (202) is fitted with a tension spring (203). The upper ends of the two tension springs (203) are fixedly connected to the two horizontal support plates (201) respectively, and the lower ends of the two tension springs (203) are fixedly connected to the slag discharge slide plate (103).

3. The coal flotation system according to claim 2, characterized in that: The flotation cavity (101) is fixedly connected to both the left and right ends of a fixed support plate (301), and a telescopic rod (302) is fixedly connected to each of the two fixed support plates (301). A squeezing displacement column (303) is fixedly connected to each of the two telescopic rods (302), and the two squeezing displacement columns (303) are fixedly connected to the horizontal support slide plate (105).

4. The coal flotation system according to claim 3, characterized in that: Both of the extrusion columns (303) are fixedly connected with transverse extrusion plates (401).

5. A coal flotation system according to claim 1, characterized in that: A horizontal stirring rod (501) is rotatably connected to the flotation cavity (101). Multiple stirring plates I (502) are uniformly fixedly connected to the horizontal stirring rod (501). A reduction motor I (503) is fixedly connected to the flotation cavity (101). The output shaft of the reduction motor I (503) is fixedly connected to the horizontal stirring rod (501).

6. A coal flotation system according to claim 5, characterized in that: A support frame plate (601) is fixedly connected to the flotation cavity (101). A reduction motor II (602) is fixedly connected to the support frame plate (601). A lifting screw (603) is fixedly connected to the output shaft of the reduction motor II (602). A take-out strainer (604) is threadedly connected to the lifting screw (603). Two limiting slides (605) are fixedly connected to the take-out strainer (604). Both limiting slides (605) are slidably connected to the support frame plate (601).

7. A coal flotation system according to claim 6, characterized in that: Two stirring vertical tanks (701) are fixedly connected to the support frame plate (601).

8. A coal flotation system according to claim 7, characterized in that: Each of the two stirring vertical tanks (701) is fixedly connected to a bearing seat (801), and each of the two bearing seats (801) is rotatably connected to a stirring vertical shaft (802). Each of the two stirring vertical shafts (802) is uniformly fixedly connected to a plurality of stirring plates II (903).

9. A coal flotation system according to claim 8, characterized in that: A horizontal solid cavity (901) is fixedly connected to the support frame plate (601), and a double-head motor (902) is fixedly connected to the horizontal solid cavity (901). A bevel gear shaft (903) is fixedly connected to each of the two output shafts of the double-head motor (902). The two bevel gear shafts (903) are rotatably connected to the two stirring vertical barrels (701) respectively, and the two bevel gear shafts (903) are meshed and driven by the two stirring vertical shafts (802) respectively.

10. A flotation method using the coal flotation system of claim 9, characterized in that, The flotation method includes the following steps: Step 1: Add coal slime to the mixing tank in the form of slurry, and add water to adjust it to an appropriate concentration to achieve slurry preparation; Step 2: Place the prepared slurry into the flotation chamber (101), add the frother and collector into the flotation chamber (101), and stir thoroughly. During the stirring process, a strong stirring force will be generated, which will start the function of aeration into the flotation chamber (101). Step 3: A large number of bubbles of varying sizes are generated in the slurry. The hydrophobic coal particles adhere to the bubbles due to the adsorption of the collector and are carried by the bubbles to the surface of the slurry to form a so-called mineralized foam layer, which is located above the flotation cavity (101). After being removed, it is clean coal. Step 4: When the hydrophilic gangue particles do not react with the collector and do not adhere to the air bubbles, they remain in the slurry and become flotation tailings, also known as coal slag. Step 5: After the clean coal is taken out, the horizontal support slide plate (105) drives multiple liquid discharge slide columns (104) to move downward, so that the multiple liquid discharge slide columns (104) are separated from the slag discharge slide plate (103), and the liquid in the flotation cavity (101) can be discharged. Step 6: Move the slag discharge slide plate (103) downwards to disengage it from the slag discharge port (102). The slag discharge port (102) will be exposed, and the coal slag in the flotation cavity (101) will be discharged through the slag discharge port (102).

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