CN210140441U - Crucible for removing non-metal impurities in production process of aluminum oxide - Google Patents

Abstract

The utility model discloses a crucible for removing non-metallic impurities in the production process of aluminum oxide. The crucible for removing non-metallic impurities in the production process of alumina comprises: the crucible comprises an outer layer crucible, a middle layer crucible and an inner layer crucible, wherein a sealable cover is arranged at the top of the inner layer crucible, and an exhaust hole is formed in the cover; a flow area communicated with each other is formed between the inner layer crucible and the outer layer crucible; and an air inlet is formed in the inner-layer crucible. This a crucible for getting rid of non-metallic impurity in aluminium oxide production process adds the pure water in the outer crucible, and the steam that the pure water boiling produced loops through inlet port, circulation region, mesh, powder and exhaust hole, takes away the non-metallic impurity in the powder, improves the purity of powder. By arranging the middle-layer crucible between the inner-layer crucible and the outer-layer crucible, powder in the inner-layer crucible is separated from water, the powder is prevented from being pasted and blocking a mesh due to splashing of the water, and the impurity removal effect is ensured.

Description

Crucible for removing non-metal impurities in production process of aluminum oxide

Technical Field

The utility model relates to a crucible for removing non-metallic impurities in the production process of aluminum oxide.

Background

With the development of society, the research and development and application of novel functional materials are more and more extensive, especially receive everyone's favor in high-precision field, however novel functional materials will directly influence product quality when giving people convenience, and its impurity element's content. For example, in the high-purity alumina production industry, the product quality is directly influenced by the residue of non-metallic impurities in the pore canal of alumina powder, and the product quality of sapphire single crystals is directly influenced and is difficult to meet the use requirement because the pore canal of the powder is narrow and the residue of the non-metallic impurities is difficult to remove and enters the downstream industry along with the powder. When getting rid of these non-metallic impurity among the traditional mode, lay the powder on the mesh and put in the crucible mostly, then send into the heating furnace with the crucible, the steam that the boiling of water produced in the crucible, during steam gets into the powder through the mesh, takes away non-metallic impurity. However, when the crucible is being transported or the water in the crucible is boiling, the splashed water easily causes the powder to be gelatinized and to block the mesh, so that the steam cannot smoothly enter the powder through the mesh. Therefore, a novel crucible for removing non-metallic impurities in the alumina production process is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a rational in infrastructure, convenient and practical, guarantee that product quality is reliable and stable is used for getting rid of the crucible of non-metallic impurity in the aluminium oxide production process, solved the problem that exists among the prior art.

The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be:

a crucible for removing non-metallic impurities from an alumina production process, comprising: an outer layer crucible, a middle layer crucible and an inner layer crucible,

the top of the inner crucible is provided with a sealable cover, and the cover is provided with an exhaust hole which enables the inner crucible to be communicated with the outside;

a flow area which is communicated with each other is formed between the inner layer crucible and the outer layer crucible, and the flow area can be arranged in a sealing way relative to the outside;

and the inner layer crucible is provided with an air inlet communicated with the circulation area.

Preferably, the top of the middle crucible is lower than that of the inner crucible, so that the flow areas between the inner crucible and the middle crucible and between the middle crucible and the outer crucible are communicated with each other.

Preferably, the cover and the outer layer crucible can be connected in a sealing mode, so that water vapor is sealed in the outer layer crucible, the water cannot be evaporated to dryness too quickly, and more importantly, the steam in the outer layer crucible has certain air pressure, and impurities in the powder can be taken out conveniently.

Preferably, a support table is arranged on the outer-layer crucible, and the cover is in close contact with the support table. Preferably, the inner crucible is supported in the middle crucible by an inner support and the middle crucible is supported in the outer crucible by an outer support. When the crucible support is used, the height of the support frame can be adjusted according to the liquid level in the outer layer crucible.

Preferably, the inner-layer crucible is provided with a clamping part, and the clamping part can be hermetically connected with the outer-layer crucible. Preferably, the middle crucible is supported within the outer crucible by an outer support.

Preferably, the air inlet holes are formed in the bottom and/or the lower portion of the inner-layer crucible, so that steam can flow upwards from the lower portion of the powder material and penetrate through the powder material, and the impurity removing effect is guaranteed.

Preferably, the bottom of the inner layer crucible is provided with a notch, and the air inlet is formed by a mesh arranged on the notch.

Preferably, the porosity of the air inlet hole is larger than that of the air outlet hole, so that certain air pressure is formed in the crucible.

Preferably, the cover is provided with a handle.

The utility model adopts the above structure, have following advantage:

the utility model provides a crucible for getting rid of non-metallic impurity in aluminium oxide production process adds the pure water in the outer crucible, and the steam that the pure water boiling produced loops through inlet port, circulation region, mesh, powder and exhaust hole, takes away the non-metallic impurity in the powder, improves the purity of powder. By arranging the middle-layer crucible between the inner-layer crucible and the outer-layer crucible, powder in the inner-layer crucible is separated from water, the powder is prevented from being pasted and blocking a mesh due to splashing of the water, and the impurity removal effect is ensured.

Drawings

Fig. 1 is a schematic structural diagram of one mode of embodiment 1 of the present invention;

fig. 2 is a schematic structural view of another mode of embodiment 1 of the present invention;

fig. 3 is a schematic structural diagram of embodiment 2 of the present invention.

In the figure, 1, an outer layer crucible, 2, a middle layer crucible, 3, an inner layer crucible, 4, a cover, 5, an exhaust hole, 6, an air inlet hole, 7, a support table, 8, an inner support frame, 9, an outer support frame, 10, a handle, 11 and a clamping part.

The specific implementation mode is as follows:

in order to clearly illustrate the technical features of the present invention, the present invention is explained in detail by the following embodiments in combination with the accompanying drawings.

Example 1:

as shown in FIGS. 1 to 2, the crucible for removing non-metallic impurities in the alumina production process of the present embodiment comprises an outer crucible 1, a middle crucible 2 and an inner crucible 3,

the top of the inner crucible 3 is provided with a sealable cover 4, and the cover 4 is provided with an exhaust hole 5 which enables the inner crucible 3 to be communicated with the outside;

a mutually communicated flow area is formed between the inner crucible 3 and the outer crucible 1, and the flow area can be arranged in a sealing way relative to the outside;

the inner crucible 3 is provided with an air inlet 6 communicated with the flow area.

The top of the middle crucible 2 is lower than the top of the inner crucible 3, so that the flow areas between the inner crucible 3 and the middle crucible 2 and between the middle crucible 2 and the outer crucible 1 are communicated with each other.

The cover 4 can be connected with the outer crucible 1 in a sealing way, so that the water vapor is sealed in the outer crucible 1, the water cannot be evaporated to dryness too fast, and more importantly, the steam in the outer crucible 1 has certain air pressure, and the impurities in the powder can be taken out conveniently.

The outer crucible 1 is provided with a support table 7, and the lid 4 is in close contact with the support table 7. Preferably, the inner crucible 3 is supported in the middle crucible 2 by means of an inner support 8 and the middle crucible 2 is supported in the outer crucible 1 by means of an outer support 9. When in use, the height of the support frame can be adjusted according to the liquid level in the outer layer crucible 1. The support 7 may be formed in at least two ways, one of which is directly projected from the inner wall of the outer crucible 1 (FIG. 1), and the other of which is formed by thinning the upper part of the inner wall of the outer crucible 1 so that the thinned part forms the support 7 (FIG. 2) with respect to the non-thinned part.

The air inlet holes 6 are arranged at the bottom and/or the lower part of the inner layer crucible 3, so that steam can flow upwards from the lower part of the powder material and penetrate through the powder material, and the impurity removal effect is ensured.

A gap is arranged at the bottom of the inner crucible 3, and the air inlet 6 is formed by a mesh arranged on the gap.

The porosity of the air inlet 6 is larger than that of the air outlet 5, which is beneficial to forming a certain air pressure in the crucible.

The cover 4 is provided with a handle 10 for easy access.

Example 2:

as shown in fig. 3, the present embodiment is different from embodiment 1 in that: the inner layer crucible 3 is provided with a clamping part 11, the clamping part 11 can be supported at the top of the outer layer crucible 1 in a sealing way, and the middle layer crucible 2 is supported in the outer layer crucible 1 through an outer support frame 9.

When the device is used, aluminum hydroxide powder is placed on the micron-sized mesh in the inner-layer crucible 3, ultrapure water is added into the outer-layer crucible 1, the cover 4 is covered, the ultrapure water is sent to a heating furnace, the ultrapure water is vaporized into steam under the heating condition, the steam sequentially passes through the air inlet 6, the circulation area, the mesh, the powder and the exhaust hole 5, non-metal impurities remained in the powder are taken away, and the purity of the powder is improved. Through set up middle level crucible 2 between inlayer crucible 3 and outer crucible 1, separate the powder and the water in the inlayer crucible 3, avoid the water splash to make the powder gelatinization block up the mesh, guarantee that impurity gets rid of the effect.

In the description of the present application, it is to be understood that the terms "central," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above-mentioned specific embodiments can not be regarded as the restriction to the scope of protection of the utility model, to technical personnel in this technical field, it is right the utility model discloses any replacement improvement or transform that embodiment made all fall within the scope of protection of the utility model.

The parts of the present invention not described in detail are the known techniques of those skilled in the art.

Claims (10)

1. A crucible for removing non-metallic impurities from an alumina production process, comprising: an outer layer crucible, a middle layer crucible and an inner layer crucible,

the top of the inner crucible is provided with a sealable cover, and the cover is provided with an exhaust hole which enables the inner crucible to be communicated with the outside;

a flow area which is communicated with each other is formed between the inner layer crucible and the outer layer crucible, and the flow area can be arranged in a sealing way relative to the outside;

and the inner layer crucible is provided with an air inlet communicated with the circulation area.

2. The crucible for removing non-metallic impurities in the alumina production process as claimed in claim 1, wherein the top of the middle crucible is lower than the top of the inner crucible, so that the communication regions between the inner crucible and the middle crucible, and between the middle crucible and the outer crucible are communicated with each other.

3. The crucible for removing non-metallic impurities in the production process of alumina as claimed in claim 1, wherein the lid is hermetically connectable to the outer crucible.

4. The crucible for removing non-metallic impurities in the production process of aluminum oxide as claimed in claim 3, wherein the outer crucible is provided with a support table, and the cover is closely abutted on the support table.

5. The crucible for removing the non-metallic impurities in the alumina production process as claimed in claim 1, wherein the inner crucible is provided with a clamping part which can be connected with the outer crucible in a sealing way.

6. The crucible for removing non-metallic impurities from an alumina production process as recited in claim 4, wherein the inner crucible is supported within the middle crucible by an inner support and the middle crucible is supported within the outer crucible by an outer support.

7. The crucible for removing non-metallic impurities from an alumina production process as claimed in claim 5, wherein the middle crucible is supported within the outer crucible by an outer support.

8. The crucible for removing non-metallic impurities in the alumina production process as claimed in claim 1, wherein the gas inlet hole is provided at the bottom and/or lower portion of the inner crucible.

9. The crucible for removing non-metallic impurities in the alumina production process as claimed in claim 8, wherein the bottom of the inner crucible is provided with a notch, and the gas inlet holes are formed by a mesh of holes provided on the notch.

10. The crucible for removing non-metallic impurities during the production of alumina as recited in claim 1, wherein the porosity of the gas inlet hole is greater than the porosity of the gas outlet hole, and the lid is provided with a handle.

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