CN210533061U

CN210533061U - Graphite baffle of tellurium distillation stove

Info

Publication number: CN210533061U
Application number: CN201921363149.0U
Authority: CN
Inventors: 余学田; 余涛; 冯超; 龙翔
Original assignee: Asbestos Kuoshan New Materials Technology Co ltd
Current assignee: Asbestos Kuoshan New Materials Technology Co ltd
Priority date: 2019-08-21
Filing date: 2019-08-21
Publication date: 2020-05-15
Anticipated expiration: 2029-08-21

Abstract

The utility model discloses a graphite baffle of tellurium distillation stove solves the problem among the prior art. The utility model provides a graphite baffle of tellurium distillation stove, includes annular planking and ball arc inner panel, and the outward flange of ball arc inner panel is connected with the interior anchor ring of annular planking, forms the evagination structure on the anchor ring, uses the centre of a circle of ball arc inner panel as central evenly distributed to have a plurality of rings of slant hole on ball arc inner panel, and in adjacent ring slant hole, the aperture that is located the slant hole than the inner circle is less than the aperture that is located the slant hole than the outer circle.

Description

Graphite baffle of tellurium distillation stove

Technical Field

The utility model relates to a tellurium distillation stove part, concretely relates to graphite baffle of tellurium distillation stove.

Background

Vacuum distillation is an important process for producing high purity tellurium, the quality of which is closely related to the design of the distillation furnace. Generally, a tellurium distillation furnace is divided into a heater, a constant temperature area and a low temperature area from bottom to top, and a graphite partition plate is an important part for separating a heating area of the distillation furnace at the bottom of the distillation furnace from a constant temperature area in the middle of the distillation furnace. The tellurium metal also contains impurities such as zinc, selenium, cadmium, aluminum, copper, iron and the like. The principle of tellurium vacuum distillation is that tellurium is evaporated under vacuum regulation and impurities are remained in a liquid phase by utilizing the obvious vapor pressure and evaporation speed difference between tellurium and impurities under the molten state of tellurium, so that tellurium and impurities are separated. However, the evaporation of tellurium is carried out on the surface of the molten tellurium in the process of vacuum distillation of tellurium, the higher evaporation speed of tellurium causes the enrichment of impurities on the surface of the melt, and the evaporation probability of the impurities is increased along with the increase of the concentration of the impurities in the molten tellurium. Therefore, in the distillation furnace, the temperature of the heating zone is high, the tellurium evaporation is fast, the tellurium vapor rapidly passes through the middle constant-temperature zone and the top condensation zone, the tellurium crystallization speed is accelerated, impurities are easily wrapped, and the quality of a tellurium product is reduced. Therefore, the graphite partition plate is required to be added for blocking and decelerating, the traditional graphite partition plate is a circular flat plate with holes, and has a certain blocking effect on the volatilization and the rising of tellurium steam, but because the volatilization and the rising direction of the tellurium steam is consistent with the opening direction of the circular flat plate, the tellurium steam can quickly rise through the holes in the circular flat plate, and the blocking effect is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a graphite baffle of tellurium distillation stove, the direction of rise through changing tellurium vapour comes better separation, solves the problem among the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a graphite baffle of tellurium distillation stove, includes annular planking and ball arc inner panel, and the outward flange of ball arc inner panel is connected with the interior anchor ring of annular planking, forms the evagination structure on the anchor ring, uses the centre of a circle of ball arc inner panel as central evenly distributed to have a plurality of rings of slant hole on ball arc inner panel, and in adjacent ring slant hole, the aperture that is located the slant hole than the inner circle is less than the aperture that is located the slant hole than the outer circle.

As a preferred technical scheme, the inner wall of the inclined hole is wavy.

As a preferred technical scheme, the higher orifice end of the inclined orifice is radial.

Compared with the prior art, the utility model, following beneficial effect has:

the invention realizes better speed reduction of tellurium vapor and better separation effect mainly through different apertures of the oblique holes, the spherical arc-shaped plates and the oblique holes.

Drawings

FIG. 1 is a sectional view of example 1.

FIG. 2 is a sectional view of example 2.

Wherein the reference numbers are as follows: 1-annular outer plate, 2-spherical arc inner plate and 3-oblique hole.

Detailed Description

The utility model aims to overcome the defects of the prior art and provide a graphite baffle plate of a tellurium distillation furnace, which is described in further detail by combining the embodiment.

Example 1

As shown in figure 1, the graphite baffle plate of the tellurium distillation furnace comprises an annular outer plate 1 and a spherical arc inner plate 2, wherein the outer edge of the spherical arc inner plate 2 is connected with the inner annular surface of the annular outer plate 1 to form an outer convex structure on the inner annular surface, and the annular outer plate 1 and the spherical arc inner plate 2 are integrally formed.

A plurality of circles of inclined holes 3 are uniformly distributed on the spherical arc inner plate by taking the circle center of the spherical arc inner plate as the center, and the diameter of the inclined hole 3 positioned on the inner circle is smaller than that of the inclined hole 3 positioned on the outer circle in the adjacent circles of inclined holes 3.

Preferably, the openings of the inclined holes in the higher direction are radial.

The graphite baffle that this embodiment designed is a integrated configuration of annular planking and spherical arc inner panel, has seted up a plurality of slant holes on the spherical arc inner panel to the rising direction change of the tellurium vapour that will rise vertically slows down the velocity of flow to a certain extent. Furthermore, the apertures of the oblique holes are different, the flow velocity of the air flow passing through the oblique holes with different apertures is different, the air pressure is different, so that the steam generates lateral deviation in the distillation furnace, and the flow velocity is further reduced. Meanwhile, the inclined hole is arranged on the spherical arc-shaped plate instead of the inclined hole which is directly arranged on the flat plate, so that the spherical arc-shaped structure is larger in contact area with steam compared with a flat plate structure, the interference on the rising of the steam is larger, and the reduction of the flow speed is facilitated.

Example 2

As shown in fig. 2, the present embodiment is different from embodiment 1 in that, in the present embodiment, the whole inclined hole is obliquely disposed, and the inner wall of the inclined hole is wavy.

According to the above embodiment, alright realize the utility model discloses well. It is worth to say that, on the premise of the above structural design, in order to solve the same technical problem, even if some insubstantial changes or retouching are made in the utility model, the essence of the adopted technical scheme is still the same as the utility model, so it should be in the protection scope of the utility model.

Claims

1. The utility model provides a graphite baffle of tellurium distillation stove which characterized in that, includes annular planking and ball arc inner panel, and the outward flange of ball arc inner panel is connected with the interior anchor ring of annular planking, forms the evagination structure on the anchor ring, uses the centre of a circle of ball arc inner panel as central evenly distributed has the slant hole of a plurality of circles on ball arc inner panel, and in adjacent circle slant hole, the aperture that is located the slant hole of inner circle is less than the aperture that is located the slant hole of outer circle.

2. The graphite baffle plate of a tellurium distillation furnace as claimed in claim 1, wherein the inner wall of the inclined hole is wavy.

3. The graphite baffle plate of a tellurium distillation furnace as claimed in claim 1, wherein the higher port end of the inclined holes is radial.