CN112619514B - Red mud processing system is used in hollow brick production - Google Patents

Abstract

The invention discloses a red mud treatment system for hollow brick production, which includes a mounting frame, a mixing tank, a screening machine and a feeding assembly, wherein, when feeding, the feeding dragon will use the feeding dragon to pass the material through a longer feeding pipe, so that The material has a longer drying time, and the degree of contact between the material and the high-temperature, high-pressure and dry gas is improved, and the water control effect is improved. Then the material enters the screening machine, and the screening machine can send the screened material to In the mixing tank, the mixing tank is fixed on the mounting frame; the top of the mixing tank is provided with a feed port 1, which is used to be connected with the discharge end of the screening machine, and the side of the mixing tank is provided with There is a second feed port, which is used to connect with the feeding tank. The inside of the mixing tank is equipped with a mixing blade and a crushing assembly that can rotate the mixture, and the material body is crushed and refined by the crushing assembly. Mixing is carried out, thereby improving the mixing effect and facilitating the subsequent brick-making process.

Description

A Red Mud Treatment System for Hollow Brick Production

technical field

The invention relates to the technical field of red mud treatment, in particular to a red mud treatment system for hollow brick production.

Background technique

Red mud is a kind of red, muddy, highly alkaline solid waste with high water content that remains after refining alumina from bauxite in the aluminum industry with high water content. Therefore, the stacking of red mud not only takes up a lot of land, but also Moreover, the alkali present in the red mud will permeate underground, pollute the groundwater, and affect the ecological environment. Therefore, how to realize the waste utilization of the red mud has become the focus of attention.

At present, red mud is often used to manufacture hollow bricks. The main process includes: preprocessing, batching, pressing, drying and calcination. Specifically, after the red mud slurry is filtered and dehydrated, it is ground together with sandstone, limestone and iron powder to make raw slurry. , adjusted to meet the technical indicators, and then carry out follow-up processing such as pressing, among which the mixing process is more important;

At present, it is common to crush the red mud slurry during the dehydration process, and then mix it with other materials. The re-transportation after crushing will easily lead to the adhesion of materials, which will lead to general mixing effect or low mixing efficiency. Moreover, The adaptability of the current crushing device is poor.

Therefore, it is necessary to provide a red mud treatment system for hollow brick production to solve the problems raised in the above-mentioned background technology.

Contents of the invention

In order to achieve the above object, the present invention provides the following technical solution: a red mud treatment system for hollow brick production, which includes an installation frame, a mixing tank, a screening machine and a feeding assembly, wherein the feeding assembly can carry out continuous Feeding, the screening machine can send the screened material body to the mixing tank, and the mixing tank is fixed on the mounting frame;

The top of the mixing tank is provided with a feeding port 1 for connecting with the discharge end of the screening machine, and the side of the mixing tank is provided with a feeding port 2 for connecting with the feeding tank. The inside of the material tank is provided with a mixing blade and a crushing assembly capable of rotating and mixing materials, and the material body is crushed and refined by the crushing assembly and then mixed by the mixing blade.

Further, as a preference, three groups of mixing tanks are fixed on the mounting frame 1, and a collecting tank is arranged under each group of mixing tanks, and a discharge port is provided at the bottom of the mixing tanks for mixing with The collection tanks are connected, and a valve body is arranged at the discharge port.

Further, preferably, the mixing tank includes a tank body, the mixing blade is coaxially fixed at one end of the rotating shaft, and the other end of the rotating shaft rotates through the tank body and is connected to the output end of the mixing motor, the The mixing motor is fixed above the tank;

The crushing assembly is arranged above the mixing blade.

Further, preferably, a booster tank is also included, and the booster tank can fill the mixing tank with pressurized gas.

Further, preferably, the crushing assembly includes a material baffle, a crushing cone and a crushing motor, wherein the material baffle is fixed on the inner wall of the tank body, and a through hole is opened in the middle of the material baffle for The rotating shaft passes through it, and there are multiple groups of lower hoppers arranged in a circle on the baffle plate, and a crushing cone is arranged coaxially above each of the lower hoppers, and the crushing cone is fixed to the crushing motor The output end of the crushing cone and the surface of the lower hopper are evenly equipped with crushing protrusions.

Further, as a preference, the crushing motor is fixed on the connecting ring seat by using a connecting arm, and the connecting ring seat is fixedly sleeved on the outside of the follower ring seat, and the bottom of the follower ring seat is connected to the output of multiple sets of telescopic rods. The ends are connected, and the other end of the telescopic rod is fixed on the fixed base, and the fixed base is fixed on the material retaining plate, and the fixed base is also connected to the rotating shaft by bearings.

Further, as a preference, a guide ring seat capable of providing guidance for the telescopic end of the telescopic rod is coaxially fixed above the fixed base;

A guide sleeve is coaxially fixed on the inner wall of the follower ring seat to provide guidance for the rotating shaft;

The telescopic rod can change the distance between the crushing cone and the lower hopper by stretching and stretching, and its stretching mode is oscillation or intermittent adjustment.

Further, preferably, a feeding blade is coaxially fixed on the rotating shaft, and the feeding blade is located below the feeding port 1 and above the crushing assembly.

Further, as a preference, the feeding assembly includes a feeding tube, a feeding dragon and a feeding hopper, wherein the feeding dragon is rotatably set in the feeding tube, and it is driven to rotate by an external motor, and one end of the feeding tube is also set There is a feeding hopper.

Further, as a preference, the outer surface of the feeding pipe is provided with multiple groups of air holes, and the air holes are located at the position of the feeding dragon, and an air supply chamber is arranged outside the feeding pipe at the position of the air holes, and the The gas supply chamber can continuously deliver high temperature, high pressure and dry gas;

An air extraction chamber is also fixed on the feeding pipe, and the air extraction chamber communicates with the top of the feeding pipe through an air extraction pipe, and its connection is set away from the air supply chamber, and the air extraction chamber can pump the water vapor in the feeding pipe to its exterior.

Compared with the prior art, the present invention provides a red mud treatment system for hollow brick production, which has the following beneficial effects:

1. In the present invention, there are multiple groups of lower hoppers arranged in a circle on the baffle plate, and a crushing cone is arranged coaxially above each lower hopper, so that the red mud material must pass through the lower hopper before it can enter the mixing chamber. The material is mixed at the position of the material leaf, and the combination of the lower hopper and the crushing cone can realize the crushing and refinement of the material, and directly mix the material after the refinement, which improves the mixing effect.

2. In the present invention, the set telescopic rod can change the distance between the crushing cone and the lower hopper through telescopic expansion, and its telescopic mode is an oscillation type or an intermittent adjustment type, wherein, when the telescopic rod is continuously telescopic, its telescopic mode shows It is an oscillating type, and when the telescopic rod only performs one or more stretches with a long gap time to adjust the distance between the crushing cone and the lower hopper, its telescopic mode is intermittently adjusted, and when its telescopic mode is oscillating In the working mode, the power of crushing materials comes from the relative rotation between the crushing cone and the lower hopper on the one hand, and the crushing up and down of the crushing cone on the other hand, so that corresponding changes can be made according to the characteristics of the material, so that it can On the basis of meeting the requirements of refinement, the efficiency of crushing and refinement is improved.

3. In the present invention, when feeding, the feeding dragon will be used to pass the material through the longer feeding pipe, so that the material has a longer drying time, and the degree of contact between the material and the high-temperature, high-pressure and dry gas is improved, and the Water control effect.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the present invention;

Fig. 2 is the structural representation of mixing tank among the present invention;

FIG. 3 is a partially enlarged structural schematic diagram of FIG. 2;

Fig. 4 is the structural representation of feeding assembly among the present invention;

In the figure: 1. Installation frame; 2. Mixing tank; 3. Screening machine; 4. Booster tank; 5. Collection tank; 6. Feeding component; 7. Air extraction pipe; ;21, tank body; 22, mixing blade; 23, rotating shaft; 24, feeding blade; 25, feeding port one; 26, discharging port; 27, mixing motor; Plate; 282, lower hopper; 283, crushing cone; 284, crushing motor; 285, connecting arm; 286, connecting ring seat; 287, follow-up ring seat; 288, guide ring seat; 289, fixed base; Rod; 291, guide sleeve; 61, feeding pipe; 62, air vent; 63, feeding dragon; 64, feeding hopper.

Detailed ways

Please refer to Figures 1-4. In an embodiment of the present invention, a red mud treatment system for hollow brick production includes an installation frame 1, a mixing tank 2, a screening machine 3, and a feeding assembly 6, wherein the feeding assembly 6 can Continuous feeding is carried out in the screening machine 3, and the material body after the screening can be sent to the mixing tank 2 by the screening machine 3, and the mixing tank 2 is fixed on the mounting frame 1;

The top of the mixing tank 2 is provided with a feed port 1 25 for connecting to the discharge end of the screening machine 3, and the side of the mixing tank 2 is provided with a feed port 2 for connecting with the feed tank , it should be explained that there are multiple feeding tanks (not shown in the figure), and the multiple feeding tanks can respectively add reducing agent, cosolvent and other materials to the mixing tank 2, wherein the reducing agent can The iron oxide in the iron-containing red mud is reduced, and the co-solvent is used in the subsequent reduction reaction to react the iron-containing red mud to form a low-melting point compound, which is then mixed with other materials to form the raw material for pressing the hollow brick. A mixing blade 22 and a crushing assembly 28 capable of rotating and mixing are provided inside the material tank 2 , and the material body is crushed and refined by the crushing assembly 28 and then mixed by the mixing blade.

As a preferred embodiment, three groups of mixing tanks 2 are fixed on the mounting frame 1, and a collection tank 5 is arranged under each group of mixing tanks 2, and an outlet is provided at the bottom of the mixing tank 2. The feed port 26 is used to communicate with the collection tank 5, and a valve body is arranged at the discharge port 26.

In this embodiment, the mixing tank 2 includes a tank body 21, the mixing blade 22 is coaxially fixed on one end of the rotating shaft 23, and the other end of the rotating shaft 23 rotates through the tank body 21 and the mixing motor 27 The output end is connected, and the mixing motor 27 is fixed on the top of the tank body 21;

The crushing assembly 28 is disposed above the mixing blade 22 .

In addition, as shown in FIG. 1 , a booster tank 4 is also included, and the booster tank 4 can fill the mixing tank 2 with pressurized gas.

In this embodiment, as shown in FIG. 2, the crushing assembly 28 includes a baffle plate 281, a crushing cone 283, and a crushing motor 284, wherein the baffle plate 281 is fixed on the inner wall of the tank body 21, and the baffle plate 281 The middle part of the material plate 281 is provided with a through hole for the rotating shaft 23 to pass therethrough, and the material baffle plate 281 is provided with a plurality of groups of lower hoppers 282 arranged in a circle, and the top of each lower hopper 282 is coaxial A crushing cone 283 is provided, and the crushing cone 283 is fixed on the output end of the crushing motor 284, and crushing protrusions are evenly distributed on the surface of the crushing cone 283 and the lower hopper 282, and the set blocking plate 281 makes the red The mud body must pass through the lower hopper 282 before it can enter the position of the mixing blade for mixing, and the use of the lower hopper and the crushing cone 283 can realize the crushing and refinement of the material, and directly mix the material after refining. Improved mixing effect.

In this embodiment, as shown in Figures 2 and 3, the crushing motor 284 is fixed on the connecting ring seat 286 by using the connecting arm 285, and the connecting ring seat 286 is fixedly sleeved on the outside of the follower ring seat 287, and the follower The bottom of the ring seat 287 is connected to the output ends of multiple sets of telescopic rods 290, the other end of the telescopic rods 290 is fixed on the fixed base 289, and the fixed base 289 is fixed on the material blocking plate 281, and the fixed base Seat 289 also adopts bearing to be connected with rotating shaft 23 rotations.

As a preferred embodiment, a guide ring seat 288 that can guide the telescopic end of the telescopic rod is coaxially fixed above the fixed base 289;

A guide sleeve 291 is coaxially fixed on the inner wall of the follower ring seat 287 so as to provide guidance for the rotating shaft 23;

The telescopic rod 290 can change the distance between the crushing cone 283 and the lower hopper 282 through telescopic expansion, and its telescopic mode is oscillation or intermittent adjustment. Specifically, when the telescopic rod is continuously telescopic, its telescopic mode is oscillating When the telescopic rod only performs one or more stretches with a long gap time to adjust the distance between the crushing cone 283 and the lower hopper 282, its telescopic mode is intermittently adjusted, and when its telescopic mode is an oscillation type The power of crushing materials comes from the relative rotation between the crushing cone and the lower hopper on the one hand, and the crushing up and down of the crushing cone on the other hand.

As a preferred embodiment, the rotating shaft 23 is also coaxially fixed with a feeding blade 24, and the feeding blade 24 is located below the feed inlet 1 25 and above the crushing assembly 28, so as to disperse the materials.

In this embodiment, as shown in Figures 1 and 4, the feeding assembly 6 includes a feeding pipe 61, a feeding dragon 63 and a feeding hopper 64, wherein the feeding dragon 63 is rotatably arranged in the feeding pipe 61, and it is driven by an external motor To drive and rotate, one end of the feeding tube 61 is also provided with a feeding hopper 64 .

In addition, the outer surface of the feeding pipe 61 is provided with a plurality of groups of air holes 62, and the air holes 62 are located at the position of the feeding dragon 63, and the outside of the feeding pipe 61 is provided with an air supply chamber at the position of the air holes 62. 9. The air supply chamber 9 can continuously deliver high temperature, high pressure and dry gas;

Also be fixed with air extraction chamber 8 on described feed pipe 61, described air extraction chamber 8 adopts air extraction pipe 7 to be connected with the top of feed pipe 61, and its junction is set away from air delivery chamber 9, and described air extraction chamber 8 can The water vapor in the feeding pipe 61 is pumped to the outside, so as to realize the water control treatment of the red mud.

In the specific implementation, the red mud raw material is continuously delivered to the feed hopper 64, and then fed by the feeding dragon. The material body enters the screening machine for screening after passing through the long feeding pipe 61, and its Before entering the screening machine, the high-temperature, high-pressure and dry gas is continuously conveyed by the air supply chamber 9, so that the red mud can be dried through the high-temperature, high-pressure and dry gas, so as to realize the water control treatment of the red mud. In addition, the screening machine 3 can The sieved material body is sent to the mixing tank 2, and the side of the mixing tank 2 is also provided with a feed port 2, which is used to be connected with the feeding tank, and a plurality of feeding tanks can be fed to the mixing tank 2 respectively. The reducing agent, co-solvent and other materials are added in, among which, the reducing agent can reduce the iron oxides in the iron-containing red mud, and the co-solvent is used in the subsequent reduction reaction to react the iron-containing red mud to form low The melting point compound is then mixed with other materials to form the raw material for pressing the hollow brick. Finally, after being mixed in the mixing tank 2, it enters the collection tank and waits for the subsequent brick-making process of making hollow bricks.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, any person familiar with the technical field within the technical scope disclosed in the present invention, according to the technology of the present invention Any equivalent replacement or change of the scheme and its inventive concepts shall fall within the protection scope of the present invention.

Claims (2)

1. The red mud treatment system for producing the hollow bricks comprises a mounting frame (1), a mixing tank (2), a screening machine (3) and a feeding assembly (6), wherein the feeding assembly (6) can continuously feed materials into the screening machine (3), the screening machine (3) can feed the screened materials into the mixing tank (2), and the mixing tank (2) is fixed on the mounting frame (1);

the method is characterized in that: the mixing device is characterized in that a first feeding hole (25) is formed in the top of the mixing tank (2) and used for being connected with a discharging end of the screening machine (3), a second feeding hole is formed in the side face of the mixing tank (2) and used for being connected with a material supplementing tank, mixing blades (22) capable of rotatably mixing materials and a crushing assembly (28) are arranged inside the mixing tank (2), and materials are mixed through the mixing blades after being crushed and refined by the crushing assembly (28);

the mixing tank (2) comprises a tank body (21), the mixing blades (22) are coaxially fixed at one end of a rotating shaft (23), the other end of the rotating shaft (23) rotatably penetrates through the tank body (21) to be connected with the output end of a mixing motor (27), and the mixing motor (27) is fixed above the tank body (21);

the crushing assembly (28) is arranged above the mixing blade (22);

the crushing assembly (28) comprises a material baffle plate (281), a crushing cone (283) and a crushing motor (284), wherein the material baffle plate (281) is fixed on the inner wall of the tank body (21), a through hole is formed in the middle of the material baffle plate (281) and is used for a rotating shaft (23) to penetrate through the through hole, a plurality of groups of circumferentially arranged lower hoppers (282) are formed in the material baffle plate (281), the crushing cone (283) is coaxially arranged above each lower hopper (282), the crushing cone (283) is fixed at the output end of the crushing motor (284), and crushing protrusions are uniformly distributed on the surfaces of the crushing cone (283) and the lower hoppers (282);

the crushing motor (284) is fixed on a connecting ring seat (286) by adopting a connecting arm (285), the connecting ring seat (286) is fixedly sleeved outside a follow-up ring seat (287), the lower part of the follow-up ring seat (287) is connected with the output ends of a plurality of groups of telescopic rods (290), the other ends of the telescopic rods (290) are fixed on a fixed base (289), the fixed base (289) is fixed on a material baffle plate (281), and the fixed base (289) is also rotatably connected with a rotating shaft (23) by adopting a bearing;

a guide ring seat (288) capable of guiding the telescopic end of the telescopic rod is coaxially fixed above the fixed base (289);

a guide sleeve (291) is coaxially fixed on the inner wall of the follow-up ring seat (287) so as to provide guidance for the rotating shaft (23);

the telescopic rod (290) can change the distance between the crushing cone (283) and the blanking hopper (282) through expansion and contraction, and the expansion and contraction mode is oscillation type or intermittent adjustment type;

the feeding assembly (6) comprises a feeding pipe (61), a feeding flood dragon (63) and a feeding hopper (64), wherein the feeding flood dragon (63) is rotatably arranged in the feeding pipe (61) and is driven by an external motor to rotate, and one end of the feeding pipe (61) is also provided with the feeding hopper (64;

a plurality of groups of air holes (62) are formed in the outer surface of the feeding pipe (61), the air holes (62) are located at the position of the feeding screw (63), an air feeding bin (9) is arranged outside the feeding pipe (61) and at the position of the air holes (62), and the air feeding bin (9) can continuously convey high-temperature high-pressure dry gas;

an air extraction bin (8) is further fixed on the feeding pipe (61), the air extraction bin (8) is communicated with the top of the feeding pipe (61) through an air extraction pipe (7), the connection position of the air extraction bin is far away from the air supply bin (9), and the air extraction bin (8) can pump water vapor in the feeding pipe (61) to the outside of the air extraction bin;

the mixing device also comprises a pressurizing tank (4), wherein the pressurizing tank (4) can charge pressurizing gas into the mixing tank (2);

and a feeding blade (24) is coaxially fixed on the rotating shaft (23), and the feeding blade (24) is positioned below the feeding hole I (25) and above the crushing assembly (28).

2. The red mud treatment system for producing the air brick of claim 1, wherein: be fixed with three group compounding jars (2) on mounting bracket (1), every group the below of compounding jar (2) all is provided with collecting vessel (5), just the bottom of compounding jar (2) is provided with discharge gate (26) for be linked together with collecting vessel (5), and discharge gate (26) department is provided with the valve body.

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