Lime bin for aluminum hydroxide production

Abstract

The utility model discloses a lime bin for aluminium hydroxide production, including storage jar, the top of storage jar is provided with the feed port, and the bottom of storage jar is provided with the discharge gate, and the inside of storage jar is provided with the inner bag of being suitable for with its inner wall appearance, the inner wall between inner bag and storage jar forms the air duct, the inside of inner bag has a plurality of wind pipes from top to bottom horizontally, both ends of wind pipe all with air duct intercommunication, still be arranged with the heat preservation layer of having the function of ventilation in the air duct. The utility model discloses a inner bag is arranged in the storage jar, thereby makes the inside of storage jar form an air duct, and the inside of inner bag still is provided with the wind pipe, and the hot air is sent into the air duct, thereby makes the hot air can fill the air duct and the wind pipe, and the inside of storage jar is dried and heated to the role of hot air, can avoid the situation that lime appears hygroscopic decomposition, and the heat preservation layer is arranged in the air duct, can keep the temperature of the inside of storage jar, thereby reduces the consumption of energy, reduces the storage cost of lime.

Description

Technical Field

[0001] This utility model relates to the technical field of lime storage equipment, and in particular to a lime silo for aluminum hydroxide production. Background Technology

[0002] In the process of preparing aluminum hydroxide, lime reacts with silica in bauxite to form calcium orthosilicate, which is insoluble in water. These impurities are then removed along with the red mud during clinker dissolution, thus improving the purity of aluminum hydroxide. Furthermore, lime acts as a flux, helping to decompose other impurities in bauxite, further enhancing the purity and recovery rate of alumina. Therefore, lime plays a crucial role in the preparation of alumina. Because lime is highly hygroscopic and prone to deliquescence during storage, special attention must be paid to moisture prevention. Therefore, improving the moisture-proof performance of lime storage is paramount to ensuring the quality of lime and the subsequent alumina preparation. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a lime silo for aluminum hydroxide production, thereby effectively solving the deficiencies in the prior art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a lime silo for aluminum hydroxide production, comprising a storage cylinder, an inlet at the top of the storage cylinder, an outlet at the bottom of the storage cylinder, an inner liner adapted to the shape of its inner wall, an air duct formed between the inner liner and the inner wall of the storage cylinder, several air pipes horizontally arranged from top to bottom inside the inner liner, both ends of the air pipes being connected to the air duct, an air inlet pipe provided on one side of the lower end of the storage cylinder, and an air outlet pipe provided on the side of the upper end of the storage cylinder opposite to the air inlet pipe, and a heat insulation layer with a breathable function arranged inside the air duct.

[0005] Furthermore, the air duct is provided with a pointed guide frame at its upper end, with the pointed corner of the guide frame facing upwards.

[0006] Furthermore, the insulation layer is a ceramic heat storage body with honeycomb pores.

[0007] Furthermore, the lower end of the storage cylinder has a constricted opening, and the inner liner also has a constricted opening shape following the shape of the storage cylinder.

[0008] Furthermore, the storage cylinder is provided with a cylinder cover on its top, and the feed inlet is provided on the cylinder cover.

[0009] Furthermore, a cover plate is provided at the feed inlet.

[0010] Furthermore, a discharge valve is provided at the discharge port.

[0011] The above-mentioned technical solution of this utility model has the following beneficial effects: By setting an inner liner inside the storage cylinder, an air duct is formed inside the storage cylinder. The inner liner is also equipped with an air pipe, which sends hot air into the air duct. This allows the hot air to fill the air duct and air pipe, and the hot air plays a role in drying and heating the inside of the storage cylinder, which can prevent the lime from deliquescing. In addition, the air duct is equipped with an insulation layer, which can maintain the temperature inside the storage cylinder, thereby reducing energy consumption and lowering the storage cost of lime. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main cross-sectional structure of an embodiment of the present utility model;

[0013] Figure 2 This is a side view cross-sectional schematic diagram of the air duct in an embodiment of the present utility model. Detailed Implementation

[0014] To better understand the above-mentioned objectives, features and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0015] 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. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0016] like Figure 1-2 As shown in the figure, the lime silo for aluminum hydroxide production described in this embodiment includes a storage cylinder 1, with an inlet 2 at the top and an outlet 3 at the bottom. The storage cylinder 1 is equipped with an inner liner 4 that is adapted to the shape of its inner wall. An air duct is formed between the inner liner 4 and the inner wall of the storage cylinder 1. Several air ducts 5 are horizontally arranged from top to bottom inside the inner liner 4. Both ends of the air ducts 5 are connected to the air duct. An air inlet pipe 6 is provided on one side of the lower end of the storage cylinder 1, and an exhaust pipe 7 is provided on the side of the upper end of the storage cylinder 1 opposite to the air inlet pipe 6. A heat insulation layer 8 with a breathable function is also arranged inside the air duct.

[0017] The air duct 5 is equipped with a pointed guide frame 9 at its upper end. The pointed corner of the guide frame 9 is arranged upwards. The arrangement of the guide plate can effectively prevent lime from accumulating on the air duct 5. The lime can slide down along the inclined surface of the guide frame 9.

[0018] Preferably, the insulation layer 8 is a ceramic heat storage body with honeycomb pores.

[0019] The lower end of the storage cylinder 1 has a constricted structure, and the inner liner 4 also has a constricted shape following the shape of the storage cylinder 1. The arrangement of the constricted structures of the storage cylinder 1 and the inner liner 4 facilitates the discharge of lime.

[0020] The storage cylinder 1 is provided with a cylinder cover 10 on its top, and the feed inlet 2 is provided on the cylinder cover 10.

[0021] A cover plate 11 is installed at the two feed inlets.

[0022] Discharge valve 12 is installed at discharge port 3.

[0023] The working principle of this utility model is as follows: The discharge valve 12 is closed, and lime is added to the inner liner 4 of the storage cylinder 1 through the feed inlet 2 for storage. The air inlet pipe 6 is connected to a hot air blower via a pipeline. The hot air generated by the hot air blower is sent into the air duct through the pipeline and the air inlet pipe 6. The hot air flows through the ceramic heat storage body in the air duct, and some of the hot air enters the interior of the air duct 5, thus circulating inside the inner liner 4. The hot air causes the interior of the air duct and the air duct 5 to heat up, and the ceramic heat storage body can store the heat. This heats and dries the lime in the storage cylinder 1, preventing the lime from becoming deliquescent. The arrangement of the air duct 5 allows for heating of the interior of the inner liner 4, thus heating the lime inside. This ensures that the lime stored in the storage cylinder 1 is heated evenly. After the hot air blower stops working, the heat retained by the ceramic heat storage body maintains the temperature inside the storage cylinder 1. While ensuring a dry lime storage environment, this also reduces energy consumption, greatly saves storage costs, and improves the overall performance of the storage cylinder 1.

[0024] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A lime silo for aluminum hydroxide production, characterized in that: The device includes a storage cylinder with a feed inlet at the top and a discharge outlet at the bottom. An inner liner fitted to the shape of the inner wall is installed inside the storage cylinder, forming an air duct between the inner liner and the inner wall of the storage cylinder. Several air ducts are horizontally arranged from top to bottom inside the inner liner, with both ends of each duct connected to the air duct. An air inlet pipe is located on one side of the lower end of the storage cylinder, and an exhaust pipe is located on the upper end of the storage cylinder opposite to the air inlet pipe. A breathable insulation layer is also arranged inside the air duct.

2. The lime silo for aluminum hydroxide production according to claim 1, characterized in that: The air duct is provided with a pointed guide frame at its upper end, with the pointed corner of the guide frame facing upwards.

3. The lime silo for aluminum hydroxide production according to claim 1, characterized in that: The insulation layer is a ceramic heat storage body with honeycomb pores.

4. A lime silo for aluminum hydroxide production according to claim 1, characterized in that: The lower end of the storage cylinder has a constricted opening, and the inner liner also has a constricted opening, following the shape of the storage cylinder.

5. A lime silo for aluminum hydroxide production according to claim 1, characterized in that: The storage cylinder is provided with a cylinder cover on its top, and the feed inlet is provided on the cylinder cover.

6. A lime silo for aluminum hydroxide production according to claim 5, characterized in that: A cover plate is provided at the feed inlet.

7. A lime silo for aluminum hydroxide production according to claim 1, characterized in that: A discharge valve is provided at the discharge port.

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