Red mud-based cementing material treatment and collection device

Abstract

The utility model discloses a red-mud-based cementing material processing and collecting device which comprises a vertical grinding mechanism and a dust-removing and material-accumulating mechanism, the vertical grinding mechanism comprises a shell, a feeding hopper and a crushing roller, the feeding hopper is arranged at the top of the shell, the crushing roller is rotatably arranged in the feeding hopper, and a plurality of crushing teeth are arranged on the crushing roller in the axial direction; the vertical grinding mechanism further comprises a lining plate, a grinding wheel support and a grinding wheel motor, the grinding wheel support is rotatably arranged in the lining plate, and a plurality of rotatable grinding wheels are arranged on the grinding wheel support in the circumferential direction; the dust collection and material accumulation mechanism comprises a material accumulation bag and a dust collector, the shell is connected with the material accumulation bag through a connecting pipe, and the dust collector is arranged at the top of the material accumulation bag. According to the red-mud-based cementing material treatment and collection device, large pieces of fed red mud are crushed into small pieces through the feeding hopper, the efficiency of grinding the red mud into powder is improved, dust can be collected after powder grinding and is prevented from entering air to pollute the environment, and the safety and environmental protection of the production environment are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of red mud treatment, in particular to a red mud-based gelling material treatment and collection device. Background Art

[0002] Red mud is a byproduct of aluminum oxide production in aluminum plants. It is called red mud because of its high iron oxide content and its appearance similar to red soil. Red mud still contains a small amount of water after filtration, and becomes a mass after natural dehydration in the red mud dump. As a geopolymer material, red mud itself has a certain gelling activity. Before using red mud as a gelling material, large pieces of red mud need to be crushed, ground, collected and stored. The appropriate fineness can make the red mud powder have a larger specific surface area. The larger the specific surface area, the larger the reaction contact surface of the red mud powder, and the red mud-based gelling material produced has better activity.

[0003] In the prior art, the grinding device for red mud usually directly grinds the naturally dehydrated block red mud, which has low production efficiency and the overall grinding cannot control the fineness of the ground red mud. In addition, the ground red mud powder is easy to disperse into the air, causing environmental pollution. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model proposes a red mud-based gelling material processing and collecting device, which can improve the grinding efficiency of red mud.

[0005] In order to achieve the above-mentioned purpose, the utility model is realized through the following technical scheme: a red mud-based gelling material processing and collecting device, including a vertical grinding mechanism and a dust removal and material accumulation mechanism;

[0006] The vertical grinding mechanism comprises a shell, a feed hopper and a crushing roller. The top of the shell is provided with a feed hopper. The crushing roller is rotatably arranged in the feed hopper and two crushing rollers are arranged in parallel. The crushing roller is provided with a plurality of crushing teeth along the axial direction, and the crushing teeth of the two crushing rollers are arranged in a staggered manner.

[0007] The vertical grinding mechanism also includes a lining plate, a grinding wheel bracket and a grinding wheel motor. The lining plate is fixedly arranged in a ring shape in the housing, the grinding wheel bracket is rotatably arranged in the lining plate, a plurality of rotatable grinding wheels are arranged on the grinding wheel bracket around the circumference, and there is a gap between the grinding wheel and the lining plate. The grinding wheel motor is connected to the grinding wheel bracket through a reducer and can drive the grinding wheel bracket to rotate;

[0008] The dust removal and material accumulation mechanism comprises a material accumulation bag and a dust collector. The shell is connected to the material accumulation bag through a connecting pipe. The dust collector is arranged on the top of the material accumulation bag. The bottom of the material accumulation bag is provided with a discharge port.

[0009] Put the large pieces of red mud into the feed hopper, and the two crushing rollers rotate relative to each other, so that the crushing teeth will first break the large pieces of red mud into small pieces, and then enter the shell. The grinding wheel motor drives the grinding wheel bracket to rotate through the reducer. The material entering the shell enters between the grinding wheel and the liner under the action of gravity, and is impacted, squeezed and ground by the grinding wheel to form powder. After grinding, the red mud powder is sucked into the accumulation bag through the connecting pipe by a vacuum cleaner, and the crushing, grinding and collection of red mud are completed.

[0010] The beneficial effects of the above-mentioned red mud-based cementitious material processing and collection device are: the large pieces of red mud fed are first broken into small pieces through the feed hopper, which improves the efficiency of the grinding wheel in grinding the red mud into powder, thereby improving production efficiency. In addition, the dust can be collected after grinding to avoid entering the air to pollute the environment, thereby improving the safety and environmental protection of the production environment.

[0011] Furthermore, gears are connected to the ends of the two crushing rollers, and the two gears are meshed with each other, and one of the crushing rollers is connected to a power source.

[0012] One of the crushing rollers is driven to rotate by a power source, and the other crushing roller can be relatively rotated under the gear transmission to crush the large pieces of red mud.

[0013] Furthermore, the vertical grinding mechanism further comprises a material shifting tooth, which is fixedly arranged on the inner wall of the feed hopper on one side where the two crushing rollers are away from each other, and is arranged alternately with the crushing teeth of the adjacent crushing rollers.

[0014] On the side where the two crushing rollers are close to each other, the space is completely filled by the staggered crushing teeth, and on the side where the two crushing rollers are far away from each other, the space between the crushing teeth is filled by the shifting teeth, thus ensuring that all materials can be crushed.

[0015] Furthermore, the grinding wheel bracket is provided with multiple groups of grinding wheels along the axial direction, the inner wall of the lining plate is provided with a screen around the circumference and multiple screens are provided along the axial direction, and the multiple screens are respectively arranged between adjacent groups of grinding wheels, and a blower is provided under the grinding wheel bracket.

[0016] After the red mud is ground multiple times by multiple sets of grinding wheels, it is driven upward by the wind generated by the blower and enters the accumulation bag through the connecting pipe. Setting screens of different fineness can control the particle size of different sets of grinding wheels and improve the grinding effect.

[0017] Furthermore, the vertical grinding mechanism also includes a sorting cage and a powder selection motor. The sorting cage is rotatably arranged at the top of the shell. The outer wall of the sorting cage is circumferentially provided with a plurality of guide blades. The outward inclination direction of the guide blades is opposite to the rotation direction. The powder selection motor is fixedly arranged on the shell and connected to the sorting cage, and can drive the sorting cage to rotate. The connecting pipe is connected to the top of the sorting cage.

[0018] The powder selection motor drives the sorting cage to rotate, and the red mud powder that meets the particle size can enter the sorting cage and then enter the accumulation bag through the connecting pipe. The red mud powder that does not meet the particle size is knocked down by the guide blades and enters the grinding wheel again for grinding.

[0019] Furthermore, the dust removal and material accumulation mechanism also includes a spiral conveying pipe and a discharging motor. The spiral conveying pipe is communicated with the discharging port and has a rotatable spiral conveying rod inside. The discharging motor is connected to the spiral conveying rod.

[0020] The collected red mud powder can enter the screw conveyor rod through the discharge port. The discharge motor drives the screw conveyor rod to rotate and discharge the red mud powder out. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation of the utility model, the following will briefly introduce the drawings required for use in the specific implementation. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0022] Figure 1 A schematic diagram of a red mud-based gelling material processing and collecting device provided in one embodiment of the utility model;

[0023] Figure 2 for Figure 1 A front view of a red mud-based cementitious material processing and collecting device shown;

[0024] Figure 3 for Figure 1 A schematic diagram of a feed hopper of a red mud-based cementitious material processing and collecting device is shown;

[0025] Figure 4 for Figure 1 A cross-sectional view of a vertical grinding mechanism of a red mud-based gelling material processing and collecting device shown;

[0026] Reference numerals:

[0027] 10-vertical grinding mechanism, 11-housing, 12-feeding hopper, 121-feeding tooth, 13-crushing roller, 131-crushing tooth, 132-gear, 21-lining plate, 22-grinding wheel bracket, 23-grinding wheel, 24-grinding wheel motor, 25-sorting cage, 251-guide blade, 26-powder selection motor, 27-connecting pipe;

[0028] 30 - dust removal and material accumulation mechanism, 31 - material accumulation bag, 32 - dust collector, 33 - spiral conveying pipe, 34 - material discharging motor. DETAILED DESCRIPTION

[0029] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0030] See also Figures 1 to 4 The utility model provides a red mud-based gelling material processing and collecting device, comprising a vertical grinding mechanism 10 and a dust removal and material accumulation mechanism 30. The red mud is ground into powder by the vertical grinding mechanism 10, and the dust removal and material accumulation mechanism 30 removes dust and collects the red mud powder.

[0031] Specifically, the vertical grinding mechanism 10 includes a housing 11, a feed hopper 12, and a crushing roller 13. The top of the housing 11 is provided with a feed hopper 12. The crushing roller 13 is rotatably arranged in the feed hopper 12, and two crushing rollers 13 are arranged in parallel. The crushing roller 13 is provided with a plurality of crushing teeth 131 along the axial direction, and the crushing teeth 131 of the two crushing rollers 13 are arranged alternately to avoid interference. It also includes a liner 21, a grinding wheel bracket 22, and a grinding wheel motor 24. The liner 21 is fixedly arranged in the housing 11 in a ring shape. The grinding wheel bracket 22 is rotatably arranged in the liner 21. The grinding wheel bracket 22 is provided with a plurality of rotatable grinding wheels 23 around the circumference. There is a gap between the grinding wheel 23 and the liner 21. The grinding wheel motor 24 is connected to the grinding wheel bracket 22 through a reducer and can drive the grinding wheel bracket 22 to rotate. The dust removal and material accumulation mechanism 30 includes a material accumulation bag 31 and a dust collector 32 . The housing 11 is connected to the material accumulation bag 31 via a connecting pipe 27 . The dust collector 32 is disposed on the top of the material accumulation bag 31 . A discharge port is disposed at the bottom of the material accumulation bag 31 .

[0032] Put the large pieces of red mud into the feed hopper 12, first drive the two crushing rollers 13 to rotate relative to each other, and the crushing teeth 131 squeeze and crush the large pieces of red mud into small pieces, and then the small pieces of red mud enter the shell 11, which can improve the efficiency of subsequent grinding. The grinding wheel motor 24 drives the grinding wheel bracket 22 to rotate through the reducer. The material entering the shell 11 enters between the grinding wheel 23 and the liner 21 under the action of gravity, and is impacted, squeezed and ground by the grinding wheel 23, thereby forming a powder. After the grinding is completed, the red mud powder can be sucked into the accumulation bag 31 through the connecting pipe 27 by the vacuum cleaner 32, which not only avoids dust pollution to the environment, but also collects the red mud powder, completing the crushing, grinding and collection of the red mud.

[0033] In this embodiment, the ends of the two crushing rollers 13 are located outside the shell 11 and are both connected to a gear 132. The two gears 132 are meshed with each other. One of the crushing rollers 13 is connected to a power source, and one of the crushing rollers 13 is driven to rotate by the power source. Under the transmission of the gear 132, the other crushing roller 13 can be driven to rotate relatively, thereby crushing large pieces of red mud.

[0034] The feed hopper 12 is also provided with a material-pickling tooth 121, which is fixedly arranged on the inner wall of the feed hopper 12 on the side where the two crushing rollers 13 are away from each other, and is arranged alternately with the crushing teeth 131 of the adjacent crushing rollers 13. The space is filled by the staggered crushing teeth 131 on the side where the two crushing rollers 13 are close to each other, and the space between the crushing teeth 131 is filled by the material-pickling tooth 121 on the side where the two crushing rollers 13 are away from each other, thereby ensuring that the materials are crushed before grinding.

[0035] Specifically, the grinding wheel bracket 22 is provided with multiple groups of grinding wheels 23 along the axial direction, and the multiple groups of grinding wheels 23 are arranged in a staggered manner to improve the coverage. The inner wall of the lining plate 21 is provided with a screen around the circumference, and multiple screens are provided along the axial direction. The multiple screens are respectively arranged between adjacent groups of grinding wheels 23, and a blower is provided below the grinding wheel bracket 22. By setting screens of different fineness, each group of grinding wheels 23 can grind different particle sizes to improve the grinding effect. After multiple grindings, the wind from the blower drives it upward and enters the accumulation bag 31 through the connecting pipe 27.

[0036] Specifically, the vertical grinding mechanism 10 further includes a sorting cage 25 and a powder selection motor 26. The sorting cage 25 is rotatably arranged at the top of the housing 11. The outer wall of the sorting cage 25 is provided with a plurality of guide blades 251 around the circumference. The outer ends of the guide blades 251 are inclined, and the inclination direction is opposite to the rotation direction. The powder selection motor 26 is fixedly arranged on the housing 11 and connected to the sorting cage 25, and can drive the sorting cage 25 to rotate. The connecting pipe 27 is connected to the top of the sorting cage 25. The powder selection motor 26 drives the sorting cage 25 to rotate, and the red mud powder that meets the particle size can enter the sorting cage 25, and then enter the accumulation bag 31 through the connecting pipe 27, and the red mud powder that does not meet the particle size is knocked down by the guide blades 251 to enter the grinding wheel 23 again for grinding.

[0037] Specifically, the dust removal and accumulation mechanism 30 also includes a spiral conveying pipe 33 and a discharge motor 34. The spiral conveying pipe 33 is horizontally arranged, and one end is connected to the discharge port. A rotatable spiral conveying rod is arranged inside the spiral conveying pipe, and the discharge motor 34 is connected to the spiral conveying rod. The collected red mud powder can enter the spiral conveying rod through the discharge port, and the discharge motor 34 drives the spiral conveying rod to rotate, so as to achieve the effect of quantitative discharge of the red mud powder.

[0038] The working principle of the above-mentioned red mud-based cementitious material processing and collection device is as follows: first start the crushing roller 13 to rotate, put the large pieces of red mud into the feed hopper 12, and the relatively rotating crushing teeth 131 crush the large pieces of red mud into small pieces, which then enter the shell 11 and fall on the grinding wheel 23. The grinding wheel motor 24 drives the grinding wheel bracket 22 to rotate, and the red mud blocks slide between the grinding wheel 23 and the liner 21, and are ground into powder by the multi-layer grinding wheel 23. After the grinding is completed, the blower blows the powder to the sorting cage 25, and the powder selection motor 26 drives the sorting cage 25 to rotate. The powder that meets the particle size requirements enters the sorting cage 25 and enters the accumulation bag 31 through the connecting pipe 27, thereby completing the crushing, grinding and collection of the red mud. When it is needed later, the discharge port can be opened and the material can be quantitatively discharged through the spiral conveying pipe 33.

[0039] The above-mentioned red mud-based gelling material processing and collecting device can improve the efficiency of grinding red mud into powder by first breaking large pieces of red mud into small pieces, thereby improving production efficiency. In addition, the dust can be collected after grinding to avoid entering the air and polluting the environment, thereby improving the safety and environmental protection of the production environment.

[0040] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A red mud-based gelling material processing and collecting device, characterized in that: It includes vertical grinding mechanism and dust removal and material accumulation mechanism; The vertical grinding mechanism comprises a shell, a feed hopper and a crushing roller. The top of the shell is provided with a feed hopper. The crushing roller is rotatably arranged in the feed hopper and two crushing rollers are arranged in parallel. The crushing roller is provided with a plurality of crushing teeth along the axial direction, and the crushing teeth of the two crushing rollers are arranged in a staggered manner. The vertical grinding mechanism also includes a lining plate, a grinding wheel bracket and a grinding wheel motor. The lining plate is fixedly arranged in a ring shape in the housing, the grinding wheel bracket is rotatably arranged in the lining plate, a plurality of rotatable grinding wheels are arranged on the grinding wheel bracket around the circumference, and there is a gap between the grinding wheel and the lining plate. The grinding wheel motor is connected to the grinding wheel bracket through a reducer and can drive the grinding wheel bracket to rotate; The dust removal and material accumulation mechanism comprises a material accumulation bag and a dust collector. The shell is connected to the material accumulation bag through a connecting pipe. The dust collector is arranged on the top of the material accumulation bag. The bottom of the material accumulation bag is provided with a discharge port.

2. The red mud-based gelling material processing and collecting device according to claim 1, characterized in that: The ends of the two crushing rollers are connected with gears, and the two gears are meshed with each other, and one of the crushing rollers is connected to a power source.

3. The red mud-based gelling material processing and collecting device according to claim 1, characterized in that: The vertical grinding mechanism also includes a material shifting tooth, which is fixedly arranged on the inner wall of the feed hopper on one side where the two crushing rollers are away from each other, and is arranged alternately with the crushing teeth of the adjacent crushing rollers.

4. The red mud-based gelling material processing and collecting device according to claim 1, characterized in that: The grinding wheel bracket is provided with multiple groups of grinding wheels along the axial direction, the inner wall of the lining plate is provided with a screen around the circumference, and multiple screens are provided along the axial direction, the multiple screens are respectively arranged between adjacent groups of grinding wheels, and the mesh of the screen gradually becomes smaller from top to bottom, and a blower is provided under the grinding wheel bracket.

5. The red mud-based gelling material processing and collecting device according to claim 1, characterized in that: The vertical grinding mechanism also includes a sorting cage and a powder selection motor. The sorting cage is rotatably arranged at the top of the shell. The outer wall of the sorting cage is circumferentially provided with a plurality of guide blades. The outward inclination direction of the guide blades is opposite to the rotation direction. The powder selection motor is fixedly arranged on the shell and connected to the sorting cage, and can drive the sorting cage to rotate. The connecting pipe is connected to the top of the sorting cage.

6. The red mud-based gelling material processing and collecting device according to claim 1, characterized in that: The dust removal and material accumulation mechanism also includes a spiral conveying pipe and a discharging motor. The spiral conveying pipe is communicated with the discharging port and is internally provided with a rotatable spiral conveying rod. The discharging motor is connected to the spiral conveying rod.

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