A production device of a red mud-based non-fired light aggregate

Abstract

The utility model discloses a kind of production devices of red mud-based non-burned lightweight aggregate, it is related to red mud processing technical field, including horizontal spiral discharge settling centrifuge, the dry material output end of horizontal spiral discharge settling centrifuge is fixedly connected with spiral agitator.The beneficial effect of the utility model is that: through horizontal spiral discharge settling centrifuge, solid-liquid separation is carried out to red mud, reduce the moisture in red mud, avoid for moisture and reactant to appear reaction, influence red mud quality, and through dispersion component, reactant is scattered, prevent reactant caking, influence red mud mixed reaction, through reactant, stimulate red mud itself strong alkaline and physical foaming replace high-temperature sintering, realize reducing energy consumption.

Description

Technical Field

[0001] This utility model relates to the field of red mud processing technology, and in particular to a production device for red mud-based non-fired lightweight aggregate. Background Technology

[0002] Red mud is a highly alkaline waste residue from the alumina industry, containing Fe2O3, Na2O, and trace heavy metals. Traditional stockpiling pollutes water and soil and occupies land, making its resource utilization urgently needed.

[0003] Given the high iron content and alkalinity of red mud, the current mainstream technology is to reduce the hematite (Fe2O3) in red mud to magnetite (Fe3O4), or to acidify red mud to extract high-abundance valuable elements such as iron (Fe), aluminum (Al), silicon (Si), titanium (Ti), and sodium (Na).

[0004] However, most existing devices suffer from drawbacks such as high sintering energy consumption, the need for complex modification, and the lack of integrated devices. Utility Model Content

[0005] In view of the above-mentioned problems in the prior art, this utility model is proposed.

[0006] The purpose of this invention is to provide a production device for red mud-based non-fired lightweight aggregate, which aims to solve the problems of high sintering energy consumption, complex modification requirements, and lack of integrated devices in most devices.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a production device for red mud-based non-fired lightweight aggregate, including a horizontal screw discharge sedimentation centrifuge, wherein a screw agitator is fixedly connected to the dry material output end of the horizontal screw discharge sedimentation centrifuge, a feed pipe is provided at the top of the screw agitator, a dispersion component is provided on the inner wall of the feed pipe, the dispersion component is used to disperse the added reactant, a valve is fixedly connected to one end of the screw agitator, and a conveyor belt is provided below the valve, the conveyor belt passing through the pressing component and the temperature and humidity curing chamber in sequence.

[0008] As a preferred embodiment of the production device for red mud-based non-fired lightweight aggregate of this utility model, the horizontal screw discharge sedimentation centrifuge includes a mounting frame, an outer tube disposed on the mounting frame, an inner tube disposed inside the outer tube, a through hole opened on the inner tube, a first screw blade rotatably disposed in the inner cavity of the inner tube, and a first motor disposed at the output end of the first screw blade.

[0009] As a preferred embodiment of the production device for red mud-based non-fired lightweight aggregate of this utility model, the spiral agitator includes a stirring tube, a second motor disposed at one end of the stirring tube, and a second spiral blade disposed at the output end of the second motor.

[0010] As a preferred embodiment of the production device for red mud-based non-fired lightweight aggregate of this utility model, the dispersion component includes a fixed frame disposed on the inner wall of the feed pipe, a third motor disposed on the fixed frame, and stirring blades disposed at the output end of the third motor.

[0011] As a preferred embodiment of the production device for red mud-based non-fired lightweight aggregate of this utility model, the pressing assembly includes a base, a lower pressing seat installed below the base, and a support platform disposed below the lower pressing seat.

[0012] As a preferred embodiment of the production device for red mud-based non-fired lightweight aggregate of this utility model, the inner side of the temperature and humidity curing chamber is provided with a conveyor belt, the conveyor belt is provided with buckles, and the top of the temperature and humidity curing chamber is provided with an air inlet pipe and an air outlet pipe.

[0013] The beneficial effects of the red mud-based non-fired lightweight aggregate production device of this utility model are as follows: the red mud is separated into solid and liquid by a horizontal screw discharge sedimentation centrifuge, which reduces the moisture in the red mud and avoids the reaction between moisture and reactants, thus affecting the quality of the red mud. The reactant is dispersed by a dispersion component to prevent the reactant from clumping and affecting the red mud mixing reaction. The strong alkalinity and physical foaming of the red mud itself, activated by the reactant, replace high-temperature sintering, thereby reducing energy consumption. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the spiral conveyor assembly in this utility model.

[0017] Figure 3 This is a schematic diagram of the conveyor belt structure in this utility model.

[0018] In the diagram: 1. Horizontal spiral discharge sedimentation centrifuge; 11. Mounting frame; 12. Outer pipe; 13. Inner pipe; 14. Through hole; 15. First spiral blade; 16. First motor; 2. Spiral agitator; 21. Agitator tube; 22. Second motor; 23. Second spiral blade; 3. Feed pipe; 4. Dispersion assembly; 41. Fixing frame; 42. Third motor; 43. Agitator blade; 5. Valve; 6. Conveyor belt; 7. Pressing assembly; 71. Base; 72. Lower pressure seat; 73. Support platform; 8. Temperature and humidity curing chamber; 81. Conveyor track; 82. Buckle; 83. Air inlet pipe; 84. Air outlet pipe. Detailed Implementation

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0021] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0022] Example 1

[0023] Reference Figure 1 This is the first embodiment of the present invention. This embodiment provides a production device for red mud-based non-fired lightweight aggregate, including a horizontal screw discharge sedimentation centrifuge 1. A screw agitator 2 is fixedly connected to the dry material output end of the horizontal screw discharge sedimentation centrifuge 1. A feed pipe 3 is provided at the top of the screw agitator 2. A dispersion component 4 is provided on the inner wall of the feed pipe 3. The dispersion component 4 is used to disperse the added reactant. A valve 5 is fixedly connected to one end of the screw agitator 2. A conveyor belt 6 is provided below the valve 5. The conveyor belt 6 passes through a pressing component 7 and a temperature and humidity curing chamber 8 in sequence.

[0024] In use, the red mud enters the high-speed rotating horizontal screw discharge sedimentation centrifuge 1, and the red mud is separated into solid and liquid by the horizontal screw discharge sedimentation centrifuge 1. The red mud after solid-liquid separation is then transported to the screw agitator 2, while the liquid is discharged from the horizontal screw discharge sedimentation centrifuge 1.

[0025] When the red mud enters the spiral mixer 2, different reactants (0.5‰ plant saponin foaming agent, additives) are added through multiple feed pipes 3 and mixed with the red mud. The mixed red mud is discharged from the valve 5 at the other end of the spiral mixer 2. The valve 5 can control the rate at which the red mud is discharged.

[0026] The red mud discharged from valve 5 falls onto conveyor belt 6, and is initially compressed into bricks by pressing component 7. It is then transported to temperature and humidity curing chamber 8, where it is steam cured at 40°C. The cured red mud is finally transported out via conveyor belt 6.

[0027] In summary, the horizontal screw discharge sedimentation centrifuge 1 separates the red mud into solid and liquid components, reduces the moisture content in the red mud, and avoids the reaction between moisture and reactants, which would affect the quality of the red mud. The dispersion component 4 disperses the reactants to prevent them from clumping and affecting the red mud mixing reaction. The reactants stimulate the strong alkalinity and physical foaming of the red mud itself, replacing high-temperature sintering, thereby reducing energy consumption.

[0028] like Figure 2 As shown, in a preferred embodiment, the horizontal screw discharge sedimentation centrifuge 1 includes a mounting frame 11, an outer tube 12 disposed on the mounting frame 11, an inner tube 13 disposed inside the outer tube 12, a through hole 14 opened on the inner tube 13, a first screw blade 15 rotatably disposed in the inner cavity of the inner tube 13, and a first motor 16 disposed at the output end of the first screw blade 15.

[0029] It should be noted that an outer tube 12 is fixedly connected to the mounting bracket 11, an inner tube 13 is fixedly connected to the inner cavity of the outer tube 12, a through hole 14 is provided on the inner tube 13, a first spiral blade 15 is rotatably connected to the inner cavity of the inner tube 13, a first motor 16 is fixedly connected to the mounting bracket 11, and the output end of the first motor 16 is fixedly connected to the first spiral blade 15.

[0030] In use, red mud is put into the outer tube 12, and the first motor 16 drives the first spiral blade 15 to rotate at high speed. Due to the difference in specific gravity between solid and liquid, the red mud will preferentially settle on the inner wall of the first spiral blade 15 and then be transported to the spiral stirrer 2 through the first spiral blade 15. The liquid flows into the space between the inner tube 13 and the outer tube 12 through the through hole 14 on the inner tube 13, thus achieving solid-liquid separation.

[0031] like Figure 2 As shown, in a preferred embodiment, the spiral stirrer 2 includes a stirring tube 21, a second motor 22 disposed at one end of the stirring tube 21, and a second spiral blade 23 disposed at the output end of the second motor 22.

[0032] It should be noted that a second motor 22 is fixedly connected to one end of the stirring tube 21, and a second spiral blade 23 is fixedly connected to the output end of the second motor 22. The second spiral blade 23 rotates inside the stirring tube 21.

[0033] The second motor 22 drives the second spiral blade 23 to rotate, and the rotation of the spiral blade stirs and transports the red mud.

[0034] like Figure 2 As shown, in a preferred embodiment, the dispersion component 4 includes a fixing frame 41 disposed on the inner wall of the feed pipe 3, a third motor 42 disposed on the fixing frame 41, and a stirring blade 43 disposed at the output end of the third motor 42.

[0035] It should be noted that a fixing frame 41 is fixedly connected to the inner wall of the feed pipe 3, a third motor 42 is fixedly connected to the upper surface of the fixing frame 41, and a stirring blade 43 is fixedly connected to the output end of the third motor 42.

[0036] The third motor 42 drives the stirring blades 43 to rotate at high speed. When the reactant is added through the feed pipe 3, the clumped reactant will be impacted by the high-speed rotating stirring blades 43 and broken up, thereby preventing the reactant from clumping and affecting the red mud mixing reaction.

[0037] like Figure 3 As shown, in a preferred embodiment, the pressing assembly 7 includes a base 71, a lower pressing seat 72 installed below the base 71, and a support platform 73 disposed below the lower pressing seat 72.

[0038] The inner side of the temperature and humidity curing chamber 8 is provided with a conveyor belt 81, and the conveyor belt 81 is provided with a buckle 82. The top of the temperature and humidity curing chamber 8 is provided with an air inlet pipe 83 and an air outlet pipe 84.

[0039] The conveyor belt 6 transports the red mud to the support platform 73, where it is initially shaped by the pressure seat 72. It is then transported by the conveyor belt 6 to the temperature and humidity curing chamber 8, where 40°C steam is introduced through the air inlet pipe 83 for curing, further enhancing the structural strength.

[0040] The side of the temperature and humidity curing chamber 8 is equipped with a conveyor belt 81. Under the action of the conveyor belt 81, the buckles 82 that fix the red mud can be transported upward, and the buckles 82 that do not fix the red mud will move downward to fix the transported red mud. When the curing time is over, the red mud will be transported downward and placed on the conveyor belt 6 and transported out of the temperature and humidity curing chamber 8.

[0041] Importantly, the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A production device of a sintered red mud-based lightweight aggregate, characterized in that: The centrifuge includes a horizontal screw discharge sedimentation centrifuge (1), the dry material output end of which is fixedly connected to a screw agitator (2), the top of which is provided with a feed pipe (3), the inner wall of which is provided with a dispersion component (4), the dispersion component (4) is used to disperse the added reactant, one end of which is fixedly connected to a valve (5), and a conveyor belt (6) is provided below the valve (5), the conveyor belt (6) passing through the pressing component (7) and the temperature and humidity curing chamber (8) in sequence.

2. The production apparatus for red mud-based non-fired lightweight aggregate as described in claim 1, characterized in that: The horizontal screw discharge sedimentation centrifuge (1) includes a mounting frame (11), an outer tube (12) disposed on the mounting frame (11), an inner tube (13) disposed inside the outer tube (12), a through hole (14) opened on the inner tube (13), a first spiral blade (15) rotatably disposed in the inner cavity of the inner tube (13), and a first motor (16) disposed at the output end of the first spiral blade (15).

3. The production apparatus for red mud-based non-fired lightweight aggregate as described in claim 1, characterized in that: The spiral stirrer (2) includes a stirring tube (21), a second motor (22) disposed at one end of the stirring tube (21), and a second spiral blade (23) disposed at the output end of the second motor (22).

4. The production apparatus for red mud-based non-fired lightweight aggregate as described in claim 1, characterized in that: The dispersion component (4) includes a fixed frame (41) disposed on the inner wall of the feed pipe (3), a third motor (42) disposed on the fixed frame (41), and a stirring blade (43) disposed at the output end of the third motor (42).

5. The production apparatus for red mud-based non-fired lightweight aggregate as described in claim 1, characterized in that: The pressing assembly (7) includes a base (71), a lower pressing seat (72) installed below the base (71), and a support platform (73) disposed below the lower pressing seat (72).

6. The production apparatus for red mud-based non-fired lightweight aggregate as described in claim 1, characterized in that: The inner side of the temperature and humidity curing chamber (8) is provided with a conveyor belt (81), and the conveyor belt (81) is provided with a buckle (82). The top of the temperature and humidity curing chamber (8) is provided with an air inlet pipe (83) and an air outlet pipe (84).

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