阅读说明：本技术 一种高纯粉体连续纯化装置及方法 (Continuous purification device and method for high-purity powder ) 是由 周社柱 冯光志 张军彦 王慧明 刘晓鹏 梁林飞 于 2020-07-23 设计创作，主要内容包括：本发明涉及一种高纯粉体连续纯化装置及方法,属于晶体材料纯化技术领域；解决现有高纯粉体纯化率低,纯化效率慢的问题；技术方案：待纯化的粉体经送料装置落入连接有驱动装置的旋转盘,旋转盘的表面设置有若干弧形隔板,弧形隔板以旋转盘的中心呈放射状依次排列,加热器位于旋转盘的下方,旋转盘自转使落入的粉体在离心力作用下经过旋转盘边缘落入接料槽,整个过程中加热器一直加热；本发明可实现粉体的连续生产,增大粉体与工艺气体和加热面的接触面积,减少粉体进出炉和升温降温时间,纯化效率和纯化效果均明显提升。(The invention relates to a continuous purification device and a continuous purification method for high-purity powder, belonging to the technical field of crystal material purification; the problems of low purification rate and low purification efficiency of the existing high-purity powder are solved; the technical scheme is as follows: the powder to be purified falls into a rotating disc connected with a driving device through a feeding device, a plurality of arc-shaped partition plates are arranged on the surface of the rotating disc in a radial mode and are sequentially arranged in a radial mode at the center of the rotating disc, a heater is located below the rotating disc, the rotating disc rotates automatically to enable the falling powder to fall into a material receiving groove through the edge of the rotating disc under the action of centrifugal force, and the heater is used for heating all the time in the whole process; the invention can realize the continuous production of the powder, increase the contact area of the powder with the process gas and the heating surface, reduce the time for the powder to enter and exit the furnace and raise the temperature, and obviously improve the purification efficiency and the purification effect.)

1. The utility model provides a high-purity powder continuous purification device, its characterized in that includes material feeding unit, rotary disk (2), heater (3) and connects silo (4), material feeding unit is located the top of rotary disk (2), and the powder of treating the purification falls into rotary disk (2) through material feeding unit, the surface of rotary disk (2) is provided with a plurality of arc baffles (6), and arc baffle (6) are radially arranging in proper order with the center of rotary disk (2), heater (3) are located the below of rotary disk (2), and rotary disk (2) are connected with drive arrangement and are used for producing the drive power of rotation to rotary disk (2), and the outward flange below of rotary disk (2) sets up connect silo (4).

2. The continuous purifying apparatus for high purity powder as claimed in claim 1, wherein the rotating disc (2) has a circular structure with a horizontal surface.

3. A high purity powder continuous purification apparatus according to claim 2, wherein the arc-shaped partition plates (6) are arranged in a spiral radial shape in the center of the rotating disk (2), and a heating purification tank (7) with two open ends is formed between two adjacent arc-shaped partition plates (6).

4. A continuous purification apparatus for high purity powder according to any one of claims 1 to 3, wherein the feeding device is a feeding hopper (1).

5. A high purity powder continuous purification device, according to claim 4, characterized in that the bottom nozzle of the feeding funnel (1) is positioned right above the center of the rotating disc (2).

6. A high purity powder continuous purification device according to claim 5, wherein the center of the rotating disc (2) is provided with a conical distribution head (8).

7. A high purity powder continuous purification device according to claim 6, wherein the driving device comprises a rotating shaft (5) connected with the rotating disc (2), and the rotating shaft (5) is rotated by a motor.

8. A continuous purification apparatus for high purity powder according to claim 7, wherein the rotary shaft (5) is connected to a material distribution head (8).

9. A high purity powder continuous purification apparatus according to claim 1 or 8, wherein the heater (3) is provided on the lower surface of the rotating disc (2).

10. A continuous purification method of high purity powder using the continuous purification apparatus of claim 1, comprising the steps of: the powder that treats the purification falls into rotary disk (2) through material feeding unit, rotary disk (2) are rotation motion under drive arrangement's drive, and the powder that falls into rotary disk (2) flows to the rotary disk edge and falls into and connects silo (4) through heating purification groove (7) that form between two adjacent arc baffle (6) under the effect of centrifugal force, the powder is heated and is purified by heater (3) of below when heating purification groove (7) through heating, the continuous purification device of high-purity powder is in under the process temperature and the vacuum of powder purification.

Technical Field

The invention belongs to the technical field of crystal material purification, and particularly relates to a high-purity powder continuous purification device and method.

Background

With the technological progress and the rapid development of high-end manufacturing industry, the demand of high-end materials is increasing, wherein various high-purity powders, such as high-purity polysilicon, are used as raw materials of solar photovoltaic cells and semiconductor integrated circuits. Due to the demand of products, the requirement on the purity of high-purity powder is higher and higher, the total content of impurities reaches the PPM level, the existing powder purification mode is to put the powder into a crucible, and then put the crucible and the powder into a high-temperature furnace for purification, and the efficiency of purifying the powder by the mode is very low, so that the production requirement is difficult to meet.

Disclosure of Invention

The invention overcomes the defects of the prior art and provides a high-purity powder continuous purification device and a high-purity powder continuous purification method. Solves the problems of low purification rate and low purification efficiency of the existing high-purity powder.

In order to achieve the above object, the present invention is achieved by the following technical solutions.

The utility model provides a high-purity powder continuous purification device, includes material feeding unit, rotary disk, heater and connects the silo, material feeding unit is located the top of rotary disk, treats that purified powder falls into the rotary disk through material feeding unit, the surface of rotary disk is provided with a plurality of arc baffles, and the arc baffle is radially arranging in proper order with the center of rotary disk, the heater is located the below of rotary disk, and the rotary disk is connected with drive arrangement and is used for producing the drive power of rotation to the rotary disk, and the outward flange below of rotary disk sets up connect the silo.

Preferably, the rotating disc is of a circular structure with a horizontal surface.

Preferably, the arc-shaped partition plates are sequentially arranged in a spiral radial manner at the center of the rotating disk, and a heating purification groove with openings at two ends is formed between every two adjacent arc-shaped partition plates.

Preferably, the feeding device comprises a feeding hopper.

Preferably, the bottom nozzle of the feeding hopper is positioned right above the center of the rotating disc.

Preferably, the center of the rotating disc is provided with a conical material distributing head.

Preferably, the driving device comprises a rotating shaft connected with the rotating disc, and the rotating shaft is driven to rotate by a motor.

Preferably, the rotating shaft is connected with the material distributing head.

Preferably, the heater is disposed on a lower surface of the rotating disk.

A high-purity powder continuous purification method using the high-purity powder continuous purification device comprises the following steps: the continuous purification device comprises a feeding device, a rotating disc, a heating purification groove, a material receiving groove, a heater, a high-purity powder continuous purification device and a material receiving groove, wherein powder to be purified falls into the rotating disc through the feeding device, the rotating disc is driven by a driving device to perform autorotation motion, the powder falling into the rotating disc flows to the edge of the rotating disc through the heating purification groove formed between two adjacent arc-shaped partition plates under the action of centrifugal force and falls into the material receiving groove, the powder is heated and purified by the heater below the powder when passing through the heating purification groove.

Compared with the prior art, the invention has the beneficial effects that.

The device can realize continuous production of powder, reduce the time for feeding the powder into and out of the furnace and heating and cooling, and improve the efficiency. The heater is arranged close to the lower part of the rotating disk, so that the heat energy utilization rate is higher. The powder is purified on the rotating disc, the rotating disc conducts heat to the powder, the contact area is large, the powder is thin on the rotating disc, the contact area with process gas is large, and the purifying effect is improved. The blanking amount and the rotating speed can be adjusted according to the purity requirement of powder purification, and the adjustability of the process is realized. The purification process is passed through from system purification to surface system, is convenient for the volatilization of impurity to get rid of, and purification efficiency and purification effect all obviously promote.

Drawings

Fig. 1 is a schematic structural diagram of a high-purity powder continuous purification device according to an embodiment of the invention.

Fig. 2 is a partially enlarged view of fig. 1.

Fig. 3 is a front cross-sectional view of fig. 1.

Wherein, 1 is feed hopper, 2 is the rotary disk, 3 is the heater, 4 are for connecing the silo, 5 are the rotation axis, 6 are the arc baffle, 7 are the groove of heating purification, 8 are branch stub bar.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail with reference to the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The technical solution of the present invention is described in detail below with reference to the embodiments and the drawings, but the scope of protection is not limited thereto.

As shown in fig. 1 and 3, the continuous purifying device for high purity powder comprises a feeding funnel 1, a rotating disc 2, a heater 3 and a receiving groove 4, wherein the rotating disc 2 is of a circular structure with a horizontal surface, and a conical distributing head 8 is arranged at the center of the rotating disc 2 and is used for dispersing falling powder. As shown in fig. 2, a plurality of arc-shaped partition plates 6 are arranged on the surface of the rotating disc 2, the arc-shaped partition plates 6 are sequentially arranged in a spiral radial shape at the center of the rotating disc 2, and a heating and purifying tank 7 with openings at two ends is formed between every two adjacent arc-shaped partition plates 6. The bottom orifice of the feeding funnel 1 is positioned right above the center of the rotating disc 2. Heater 3 hugs closely in the lower surface setting of rotary disk 2, and the below of heater 3 is connected with and connects silo 4, and the outward flange that connects silo 4 surpasss the outward flange of rotary disk 2 to make the powder after the purification that falls from the 2 edges of rotary disk get into and connect silo 4, the bottom of branch stub bar 8 is connected with rotation axis 5, and rotation axis 5 drives rotatoryly and then drives whole rotary disk 2 through the motor and rotates.

The specific powder purification process comprises the following steps: the powder that will treat the purification is added through feed hopper 1, make the powder fall into rotary disk 2 through feed hopper 1, contact earlier when the powder falls and divide stub bar 8, it is interior to go into the heating purification groove 7 between stub bar 8 dispersion entering arc baffle 6, rotation axis 5 that the rotation disk 2 bottom is connected drives rotary disk 2 through the motor (not shown in the figure) of connecting and does the circumference rotation, the powder falls to rotary disk 2 according to process speed through feed hopper 1, the powder falls behind rotary disk 2, slowly flow to charging chute 4 through centrifugal force, whole in-process heater 3 heats always. The whole system is operated in a high-temperature high-vacuum environment or a high-temperature environment filled with process gas.

The device realizes continuous production of powder, reduces the time for feeding the powder into and out of the furnace and heating and cooling, and improves the efficiency. The heater 3 is arranged under the rotating disk 2, and the heat energy utilization rate is higher. The powder is purified on the rotating disc 2, the rotating disc 2 conducts heat to the powder, the contact area is large, the powder is thin on the rotating disc 2, the contact area with process gas is large, and the purifying effect is improved. The blanking amount and the rotating speed can be adjusted according to the purity requirement of powder purification, and the adjustability of the process is realized. The purification process is passed through from system purification to surface system, is convenient for the volatilization of impurity to get rid of, and purification efficiency and purification effect all obviously promote.

While the invention has been described in further detail with reference to specific preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.