Magnesium-carbon hydrated material drying device

Abstract

The utility model relates to a magnesia-carbon hydrated material drying device which comprises a rotary kiln and is characterized in that a material receiving pit is arranged below a discharge port of the rotary kiln, a horizontal conveying belt is arranged at the bottom of the material receiving pit, and a left push-pull cylinder set and a right push-pull cylinder set which are higher than the horizontal conveying belt are arranged on the left side wall and the right side wall of the material receiving pit respectively. The telescopic ends of the left push-pull cylinder set are jointly connected with a left baffle, the telescopic ends of the right push-pull cylinder set are jointly connected with a right baffle, the left baffle and the right baffle are oppositely arranged, and the lower edges of the left baffle and the right baffle make contact with the upper surface of the horizontal conveying belt. A left dehumidification box and a right dehumidification box which are communicated with the side dehumidification hole sets are arranged on the back faces of the left baffle and the right baffle respectively, a lower dehumidification hole set is formed in a belt body of the horizontal conveying belt, and a lower dehumidification box corresponding to the lower dehumidification hole set is arranged below the horizontal conveying belt. The device solves the problem that the moisture removal efficiency of the dried granules is low, and further improves the production efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to waste old magnesium carbon brick recycling and reprocessing technical field, concretely relates to a kind of magnesium carbon hydrating material drying device. BACKGROUND

[0002] In order to save production resources, protect the environment, waste old magnesium carbon brick is usually recycled and reused at present. When recycling, crushing machine is used for crushing and screening treatment, so that granular material is obtained. The granular material is subjected to rolling treatment to separate the aggregate from the matrix in the magnesium carbon brick and remove false particles. Finally, the aluminum-magnesium carbon brick regenerated material is obtained by grinding treatment, which is used as the production raw material of the subsequent refractory brick. However, metallic aluminum powder is one of the most commonly used additives in magnesium carbon brick. During the use of magnesium carbon brick, Al4C3 and a small amount of AlN are generated by reaction. These components will undergo hydration reaction when they come into contact with water, generating methane, ammonia and other gases, which will cause the expansion cracks and even pulverization of the refractory material product prepared after recycling. Therefore, before rolling treatment, the crushed magnesium carbon brick granular material needs to be subjected to hydration treatment to remove impurities in advance. After the hydration reaction is completed, the magnesium carbon hydrating material is sent to a drying device for drying treatment.

[0003] At present, the drying device usually uses a rotary kiln. CNG gas is used for heating to gradually increase the temperature to 400 degrees. The granular material is rotated and heated in the rotary kiln. After 20 minutes of heating, the granular material is discharged in succession. However, the discharged granular material needs a long time to dissipate moisture, which is not conducive to the rapid delivery to the rolling equipment and affects the production efficiency. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a magnesium carbon hydrating material drying device with reasonable structure and reliable use, solving the problem of low moisture removal efficiency of granular material after drying, and further improving the production efficiency.

[0005] The technical solution of the utility model is as follows:

[0006] A magnesium carbon hydrating material drying device includes a rotary kiln. The technical key points are as follows: a receiving pit is arranged below the discharge port of the rotary kiln. A horizontal conveyor belt perpendicular to the length direction of the rotary kiln is arranged at the bottom of the receiving pit. Left and right side walls of the receiving pit are respectively provided with a left push-pull cylinder group and a right push-pull cylinder group which are higher than the horizontal conveyor belt. The extension ends of the left push-pull cylinder group are connected to a left baffle. The extension ends of the right push-pull cylinder group are connected to a right baffle. The left baffle and the right baffle are oppositely arranged and the lower edges thereof are in contact with the upper surface of the horizontal conveyor belt. The left baffle and the right baffle are arranged along the length direction of the horizontal conveyor belt. Side moisture extraction holes are arranged on the left baffle and the right baffle. Left and right moisture extraction boxes are arranged on the opposite surfaces of the left baffle and the right baffle, which are in communication with the side moisture extraction holes. Lower moisture extraction holes are arranged on the belt body of the horizontal conveyor belt. A lower moisture extraction box corresponding to the lower moisture extraction holes is arranged below the horizontal conveyor belt.

[0007] The magnesium-carbon hydrated material drying device has an inclined screw conveyor at the end of the horizontal conveyor belt, a receiving hopper above the feed inlet of the inclined screw conveyor, and the receiving hopper is connected to the end of the horizontal conveyor belt.

[0008] The magnesium-carbon hydrated material drying device has a left dehumidifying box, a right dehumidifying box and a lower dehumidifying box connected to external negative pressure dehumidifiers.

[0009] The magnesium-carbon hydrated material drying device has a support plate below the lower dehumidifying box, and the support plate is connected and fixed to the left and right side walls of the receiving pit.

[0010] The magnesium-carbon hydrated material drying device has an inclined screw conveyor at the end of the horizontal conveyor belt, a receiving hopper above the feed inlet of the inclined screw conveyor, and the receiving hopper is connected to the end of the horizontal conveyor belt.

[0011] The magnesium-carbon hydrated material drying device has an inclined screw conveyor at the end of the horizontal conveyor belt, a receiving hopper above the feed inlet of the inclined screw conveyor, and the receiving hopper is connected to the end of the horizontal conveyor belt. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a structural schematic diagram of the magnesium-carbon hydrated material drying device;

[0013] Figure 2 is a side view of the receiving pit.

[0014] In the figure: 1. rotary kiln, 2. left push-pull cylinder group, 3. left dehumidifying box, 4. horizontal conveyor belt, 5. left baffle, 6. right baffle, 7. right dehumidifying box, 8. right push-pull cylinder group, 9. receiving pit, 10. side dehumidifying hole group, 11. lower dehumidifying hole group, 12. lower dehumidifying box, 13. support plate, 14. receiving hopper, 15. inclined screw conveyor. DETAILED DESCRIPTION

[0015] The magnesium-carbon hydrated material drying device is described in detail according to the drawings.

[0016] As shown in Figure 1 , Figure 2 The magnesium-carbon hydrated material drying device has a receiving pit 9 below the discharge port of the rotary kiln 1.

[0017] The bottom of the material receiving pit 9 is provided with a horizontal conveying belt 4 perpendicular to the length direction of the rotary kiln 1, and the left and right side walls of the material receiving pit 9 are respectively provided with a left push-pull cylinder group 2 and a right push-pull cylinder group 8 which are higher than the horizontal conveying belt 4, the telescopic ends of the left push-pull cylinder group 2 are connected to a left baffle 5, the telescopic ends of the right push-pull cylinder group 8 are connected to a right baffle 6, the left baffle 5 and the right baffle 6 are oppositely arranged and the lower edges thereof are in contact with the upper surface of the horizontal conveying belt 4, and the left baffle 5 and the right baffle 6 are arranged along the length direction of the horizontal conveying belt 4.

[0018] The left baffle 5 and the right baffle 6 are provided with a side dehumidification hole group 10, and the opposite surfaces of the left baffle 5 and the right baffle 6 are respectively provided with a left dehumidification box 3 and a right dehumidification box 7 which are in communication with the side dehumidification hole group 10. The belt body of the horizontal conveying belt 4 is provided with a lower dehumidification hole group 11, and the lower portion of the horizontal conveying belt 4 is provided with a lower dehumidification box 2 corresponding to the lower dehumidification hole group 11. The lower portion of the lower dehumidification box 12 is provided with a support plate 13, and the two ends of the support plate 13 are connected and fixed to the left and right side walls of the material receiving pit 9. The left dehumidification box 3, the right dehumidification box 7 and the lower dehumidification box 12 are respectively connected to an external negative pressure dehumidifier.

[0019] In the embodiment, the material receiving pit 9 is provided with an inclined screw conveyor 15 at the end of the horizontal conveying belt 4, the material receiving hopper 14 is arranged above the feeding port of the inclined screw conveyor 15, one side of the material receiving hopper 14 is arranged below the end of the horizontal conveying belt 4, and the discharging port of the inclined screw conveyor 15 is located outside the material receiving pit 9.

[0020] Working principle:

[0021] 1. The magnesium carbon hydrated material is sent into the rotary kiln 1 by the conveying device, rotates in the rotary kiln 1 and gradually moves to the discharging port of the rotary kiln 1, and finally is discharged from the discharging port of the rotary kiln 1 and is dried in the process.

[0022] 2. The horizontal conveying belt 4 receives the magnesium carbon particle material discharged from the discharging port, and the left baffle 5 and the right baffle 6 prevent the material from scattering outside, and at the same time, the left dehumidification box 3, the right dehumidification box 7 and the lower dehumidification box 12 accelerate the exhaust of moisture in the magnesium carbon particle material through the side dehumidification hole group 10 and the lower dehumidification hole group 11, and speed up the dehumidification.

[0023] 3. The magnesium carbon particle material is gradually moved to the inclined screw conveyor 15 under the driving of the horizontal conveying belt 4, and is then conveyed to the ground by the inclined screw conveyor 15. Finally, the staff uses the conveying device to transport away.

[0024] The embodiments of the present application are described in detail above, but the content is only the preferred embodiments of the present application, and cannot be considered as limiting the scope of the present application. Any equivalent changes and improvements made within the scope of the present application are still within the scope of the present application.

Claims

1. A magnesium carbide hydrate drying device, comprising a rotary kiln, characterized in that: The rotary kiln has a receiving pit below its discharge port. A horizontal conveyor belt perpendicular to the length of the rotary kiln is located at the bottom of the receiving pit. Left and right side walls of the receiving pit are respectively equipped with a left push-pull cylinder group and a right push-pull cylinder group, both higher than the horizontal conveyor belt. The telescopic ends of the left push-pull cylinder group are connected to a left baffle, and the telescopic ends of the right push-pull cylinder group are connected to a right baffle. The left and right baffles are arranged opposite each other, with their lower edges contacting the upper surface of the horizontal conveyor belt. The left and right baffles are arranged along the length of the horizontal conveyor belt. Side dehumidification hole groups are provided on the left and right baffles. Left and right dehumidification boxes communicating with the side dehumidification hole groups are respectively located on the opposite sides of the left and right baffles. A lower dehumidification hole group is provided on the horizontal conveyor belt, and a lower dehumidification box corresponding to the lower dehumidification hole group is located below the horizontal conveyor belt.

2. The magnesium-carbon hydrate drying apparatus according to claim 1, characterized in that: The receiving pit is equipped with an inclined screw conveyor at the end of the horizontal conveyor belt. A receiving hopper is provided above the inlet of the inclined screw conveyor. The upper edge of one side of the receiving hopper is attached to the lower end of the horizontal conveyor belt. The discharge port of the inclined screw conveyor is located outside the receiving pit.

3. The magnesium-carbon hydrate drying apparatus according to claim 1, characterized in that: The left dehumidification box, right dehumidification box, and lower dehumidification box are each connected to an external negative pressure dehumidifier.

4. The magnesium-carbon hydrate drying apparatus according to claim 1, characterized in that: A support plate is provided below the lower dehumidification box, and the two ends of the support plate are connected and fixed to the left and right side walls of the receiving pit.

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