Pure aluminate binding agent production device

Abstract

The utility model relates to the technical field of pure aluminate binding agent production, in particular to a pure aluminate binding agent production device. The pure aluminate binding agent production device comprises an aluminum hydroxide storage tank, the aluminum hydroxide storage tank is connected with a blender through a first-stage high-temperature furnace, the blender is connected with a second-stage high-temperature furnace through a filter press, the second-stage high-temperature furnace is connected with a slow cooling device, a hemispherical disperser is arranged in the blender, and the hemispherical disperser is connected with the slow cooling device. And a temperature control coil pipe is arranged in the slow cooler. According to the device disclosed by the invention, through the cooperative use of the powder discharging opening and the hemispherical disperser, falling powder enters the mixer after being dispersed by the hemispherical disperser, so that the mixing uniformity degree is greatly improved, and the mixing time is saved; through the arrangement of the connecting pipeline, high-temperature nitrogen generated in the first-stage high-temperature furnace is used for annealing in the slow cooling device, so that the energy consumption of the temperature control coil pipe is saved, and nitrogen protection is also carried out on an annealed product.

Description

Technical Field

[0001] The utility model relates to the technical field of pure aluminate binder production, in particular to a pure aluminate binder production device. Background Art

[0002] Pure aluminate binders are inorganic non-metallic materials widely used in industries such as ceramics, refractory materials, casting and building materials. They are known for their excellent high temperature stability, chemical stability and mechanical strength. The main components of pure aluminate binders are aluminates, which can form a strong bond at high temperatures. The process of producing pure aluminate binders usually includes steps such as mixing of raw materials, molding and sintering.

[0003] In actual production, raw materials are fed directly by gravity, which causes the powders entering the mixer to accumulate in piles, which requires a long time to stir them evenly, wasting a lot of time. Moreover, the sintered pure aluminate binder generally requires temperature-controlled annealing treatment, and the existing device relies on temperature-controlled coils to control its temperature, which not only increases energy consumption, but also makes it difficult to ensure the atmosphere for returns. Utility Model Content

[0004] In view of the above deficiencies in the prior art, the purpose of the utility model is to provide a pure aluminate binder production device. Through the coordinated use of a powder discharge port and a hemispherical disperser, the falling powder is dispersed by the hemispherical disperser and then enters the mixer, which greatly improves the mixing uniformity and saves mixing time; through the setting of a connecting pipeline, the high-temperature nitrogen generated in the first-level high-temperature furnace is used for annealing in a slow cooler, which not only saves the energy consumption of the temperature control coil, but also provides nitrogen protection for the annealed product.

[0005] The utility model is realized by adopting the following technical solutions:

[0006] The pure aluminate binder production device comprises an aluminum hydroxide storage tank, which is connected to a mixer via a primary high-temperature furnace, which is connected to a secondary high-temperature furnace via a filter press, which is connected to a slow cooler, a hemispherical disperser is provided inside the mixer, and a temperature control coil is provided inside the slow cooler.

[0007] A primary filter is arranged between the aluminum hydroxide storage tank and the primary high-temperature furnace, and a secondary filter is connected to the mixer.

[0008] A first-stage high-temperature furnace heating plate is arranged inside the first-stage high-temperature furnace, and a nitrogen blower is connected to the first-stage high-temperature furnace.

[0009] The mixer is provided with a powder feeding port, which is located just above the hemispherical disperser, and a stirring paddle is arranged inside the mixer.

[0010] The hemispherical disperser is a hemispherical body with a smooth surface. When the powder falls onto the curved surface of the hemispherical body, it "sputters" and disperses in all directions.

[0011] The secondary high temperature furnace is provided with a secondary high temperature furnace heating plate inside, and a slow cooler is provided with an air outlet.

[0012] The first-level high-temperature furnace is connected to the slow cooler through a connecting pipeline, and the mixer is connected to a calcium chloride solution preparation tank.

[0013] The temperature-controlled coil generally contains a higher temperature liquid phase, which is used to prevent annealing from being too fast, thereby affecting the formation of the crystal form.

[0014] The working principle of the utility model is:

[0015] After the powder in the aluminum hydroxide storage tank is filtered through the primary filter, it enters the primary high-temperature furnace, the nitrogen fan is started, the temperature is raised to 1100-1200℃, and the temperature is kept for 3-4 hours. After cooling, alumina powder with high porosity is obtained; then it is placed in a mixer, calcium chloride solution is added through the calcium chloride solution preparation tank, calcium oxide powder and alumina powder are added through the secondary filter, and after mixing evenly, it enters the filter press for filtration, the filtrate and filter cake are collected separately, the filter cake is dried and pressed to obtain a blank; the blank is added to the secondary high-temperature furnace, the temperature is raised to 1550-1600℃ for roasting, and then transferred to the slow cooler, and the high-temperature nitrogen generated in the primary high-temperature furnace is used for annealing in the slow cooler through the connecting pipe. Among them, the temperature control coil generally contains a higher temperature liquid phase to prevent annealing too fast, thereby affecting the formation of the crystal form.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] By adopting the pure aluminate binder production device of the utility model, the powder feeding port and the hemispherical disperser are used in combination, and the falling powder is dispersed by the hemispherical disperser and then enters the mixer, which greatly improves the mixing uniformity and saves the mixing time; through the setting of the connecting pipeline, the high-temperature nitrogen generated in the first-level high-temperature furnace is used for annealing in the slow cooler, which not only saves the energy consumption of the temperature control coil, but also provides nitrogen protection for the annealed product. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the pure aluminate binder production device of the utility model;

[0019] In the figure: 1. Aluminum hydroxide storage tank; 2. Primary filter; 3. Primary high-temperature furnace; 4. Secondary filter; 5. Mixer; 6. Filter press; 7. Secondary high-temperature furnace; 8. Slow cooler; 9. Nitrogen blower; 10. Primary high-temperature furnace heating plate; 11. Secondary high-temperature furnace heating plate; 12. Calcium chloride solution preparation tank; 13. Powder discharge port; 14. Hemispherical disperser; 15. Connecting pipe; 16. Temperature control coil; 17. Air outlet. DETAILED DESCRIPTION

[0020] In order to make the purpose and technical solution of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings.

[0021] Example 1

[0022] like Figure 1 As shown, the pure aluminate binder production device includes an aluminum hydroxide storage tank 1, which is connected to a mixer 5 through a primary high-temperature furnace 3, and the mixer 5 is connected to a secondary high-temperature furnace 7 through a filter press 6, and the secondary high-temperature furnace 7 is connected to a slow cooler 8. A hemispherical disperser 14 is provided inside the mixer 5, and a temperature control coil 16 is provided inside the slow cooler 8. A primary filter 2 is provided between the aluminum hydroxide storage tank 1 and the primary high-temperature furnace 3, and a secondary filter 4 is connected to the mixer 5. A primary high-temperature furnace heating plate 10 is provided inside the primary high-temperature furnace 3, and a nitrogen blower 9 is connected to the primary high-temperature furnace 3. A powder discharge port 13 is provided on the mixer 5, and the powder discharge port 13 is located directly above the hemispherical disperser 14, and a stirring paddle is provided inside the mixer 5. The hemispherical disperser 14 is a hemispherical body with a smooth surface. When the powder falls to the curved surface of the hemispherical body, it is "sputtered" and dispersed around. The secondary high temperature furnace 7 is provided with a secondary high temperature furnace heating plate 11, and the slow cooler 8 is provided with an air outlet 17. The primary high temperature furnace 3 is connected to the slow cooler 8 through a connecting pipe 15, and the mixer 5 is connected with a calcium chloride solution preparation tank 12.

[0023] The above-mentioned pure aluminate binder production device, when in operation, comprises the following steps:

[0024] (1) The powder in the aluminum hydroxide storage tank 1 is filtered through the primary filter 2 and then enters the primary high-temperature furnace 3. The nitrogen blower 9 is started, the temperature is raised to 1100-1200°C, and the temperature is kept for 3-4 hours. After cooling, a high-porosity aluminum oxide powder is obtained; (2) It is then placed in a mixer 5, and a calcium chloride solution is added through a calcium chloride solution preparation tank 12, and calcium oxide powder and aluminum oxide powder are added through a secondary filter 4. After being mixed evenly, it enters a filter press 6 for filtration, and the filtrate and filter cake are collected separately. The filter cake is dried and pressed to obtain a blank; (3) The blank is placed in a secondary high-temperature furnace 7, the temperature is raised to 1550-1600°C for roasting, and then transferred to a slow cooler 8. The high-temperature nitrogen generated in the primary high-temperature furnace 3 is used for annealing in the slow cooler 8 through a connecting pipe 15.

Claims

1. A pure aluminate binder production device, characterized in that: The invention comprises an aluminum hydroxide storage tank (1), wherein the aluminum hydroxide storage tank (1) is connected to a mixer (5) via a primary high temperature furnace (3), the mixer (5) is connected to a secondary high temperature furnace (7) via a filter press (6), the secondary high temperature furnace (7) is connected to a slow cooler (8), a hemispherical disperser (14) is arranged inside the mixer (5), and a temperature control coil (16) is arranged inside the slow cooler (8).

2. The pure aluminate binder production device according to claim 1, characterized in that: A primary filter (2) is provided between the aluminum hydroxide storage tank (1) and the primary high-temperature furnace (3), and a secondary filter (4) is connected to the mixer (5).

3. The pure aluminate binder production device according to claim 1, characterized in that: A first-stage high-temperature furnace heating plate (10) is provided inside the first-stage high-temperature furnace (3), and a nitrogen blower (9) is connected to the first-stage high-temperature furnace (3).

4. The pure aluminate binder production device according to claim 1, characterized in that: The mixer (5) is provided with a powder feeding port (13), which is located directly above the hemispherical disperser (14). A stirring paddle is provided inside the mixer (5).

5. The pure aluminate binder production device according to claim 1, characterized in that: The secondary high-temperature furnace (7) is provided with a secondary high-temperature furnace heating plate (11) inside, and the slow cooler (8) is provided with an air outlet (17).

6. The pure aluminate binder production device according to claim 1, characterized in that: The first-stage high-temperature furnace (3) is connected to the slow cooler (8) via a connecting pipe (15), and the mixer (5) is connected to a calcium chloride solution preparation tank (12).

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