CN114259743A - Silicon powder dehydration device with particle size control function and dehydration method - Google Patents
Silicon powder dehydration device with particle size control function and dehydration method Download PDFInfo
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- CN114259743A CN114259743A CN202111641607.4A CN202111641607A CN114259743A CN 114259743 A CN114259743 A CN 114259743A CN 202111641607 A CN202111641607 A CN 202111641607A CN 114259743 A CN114259743 A CN 114259743A
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Abstract
The invention belongs to the technical field of drying, and particularly relates to a silicon powder dehydration device with a particle size control function and a dehydration method, wherein the device comprises: a case having an upper end opened; the atomization mechanism is positioned at an opening at the upper end of the box body and is suitable for atomizing the silicon powder suspension and then discharging the silicon powder suspension into the box body; the hot air conveying mechanism is used for introducing hot air into the box body so as to dry the atomized silicon powder suspension liquid in the box body into silicon powder particles; wherein a grinding gap is formed between the outer wall of the atomization mechanism and the inner wall of the box body; the box body rotates at a high speed to generate centrifugal force to push the silicon powder particles to move towards the grinding gap and discharge the silicon powder particles after being ground into qualified particle size in the grinding gap, hot air is conveyed into the box body by the device, and the silicon powder suspension liquid atomized by the atomizing mechanism in the box body is dried to form the silicon powder particles, so that the drying effect is realized; the atomizing mechanism is arranged between the opening at the upper end of the box body and the box body to form a grinding gap, and the function of controlling the particle size is achieved.
Description
Technical Field
The invention belongs to the technical field of drying, and particularly relates to a silicon powder dehydration device with a particle size control function and a dehydration method.
Background
The silicon powder is formed by collecting and processing smoke dust escaping with waste gas by a special collecting mechanism in the process of smelting industrial silicon and ferrosilicon at high temperature by an industrial electric furnace.
The purity of the primarily collected silicon powder is not high, purification treatment is needed, wet purification is generally adopted, the silicon powder is added with water to prepare an ore pulp solution, hydrochloric acid is used for adjusting the pH value of the ore pulp solution, impurities are easy to separate, and finally high-purity silicon powder suspension is obtained.
However, the suspension of silicon powder after wet purification needs to be dried. At present, the drying treatment mode is as follows: putting the silicon powder suspension into a box body, heating and drying; however, this method does not dry well and the particles are not uniform.
Disclosure of Invention
The invention aims to provide a silicon powder dehydration device with a particle size control function and a dehydration method.
In order to solve the above technical problem, the present invention provides a silicon powder dehydration apparatus with a particle size control function, comprising: a case having an upper end opened; the atomization mechanism is positioned at an opening at the upper end of the box body and is suitable for atomizing the silicon powder suspension and then discharging the silicon powder suspension into the box body; the hot air conveying mechanism is used for introducing hot air into the box body so as to dry the atomized silicon powder suspension liquid in the box body into silicon powder particles; wherein a grinding gap is formed between the outer wall of the atomization mechanism and the inner wall of the box body; the box body rotates at a high speed to enable the silicon powder particles to generate centrifugal force so as to push the silicon powder particles to move towards the grinding gap, and the silicon powder particles are ground into qualified particle sizes in the grinding gap and then discharged.
In a second aspect, the present invention also provides a method for dehydrating silicon powder, comprising: the atomization mechanism atomizes the silicon powder suspension and then discharges the silicon powder suspension into the box body; introducing hot air into the box body to dry the atomized silicon powder suspension in the box body into silicon powder particles; the box body rotates at a high speed to enable the silicon powder particles to generate centrifugal force so as to push the silicon powder particles to move towards a grinding gap between the outer wall of the atomization mechanism and the inner wall of the box body; the box body and the atomization mechanism rotate reversely to grind the silicon powder particles in the grinding gap into qualified particle sizes and then discharge the qualified particles through hot air.
The silicon powder dehydration device with the particle size control function has the advantages that hot air is conveyed into the box body through the hot air conveying mechanism, so that silicon powder suspension liquid atomized by the atomizing mechanism in the box body is dried to form silicon powder particles, and the drying effect is realized; the atomizing mechanism is arranged between the opening at the upper end of the box body and the box body to form a grinding gap, so that silicon powder particles discharged from the box body are ground into qualified particle sizes, the function of controlling the particle sizes is achieved, and the equipment space is saved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of a silicon powder dehydration apparatus with particle size control according to the present invention;
FIG. 2 is a schematic view of the structure of the grinding gap of the silicon powder dehydration apparatus with particle size control according to the present invention;
FIG. 3 is a schematic view of the structure of a guide strip of a silicon powder dehydration apparatus with particle size control according to the present invention;
fig. 4 is a schematic structural view of an atomizing mechanism of the silicon powder dehydration apparatus with a particle diameter control function according to the present invention.
In the figure:
the device comprises a box body 1, a box body driving assembly 11, a box body driver 111, a box body driving shaft 112, a guide strip 12, a slope 121, a vertical surface 122, a flange 123, an air outlet 124, a flow dividing cover 13, a rotary joint 14, an atomizing mechanism 2, an atomizer 21, a water absorbing layer 22, a water flow guide channel 23, a hot air conveying mechanism 3, hot air 31 and a grinding gap 4.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
As shown in fig. 1, the present embodiment provides a silicon powder dehydration apparatus with a particle size control function, which includes: a box body 1, the upper end of which is opened; the atomization mechanism 2 is positioned at an opening at the upper end of the box body 1 and is suitable for atomizing the silicon powder suspension and then discharging the silicon powder suspension into the box body 1; the hot air conveying mechanism 3 is used for introducing hot air 31 into the box body 1 so as to dry the atomized silicon powder suspension liquid in the box body 1 into silicon powder particles; wherein a grinding gap 4 is formed between the outer wall of the atomizing mechanism 2 and the inner wall of the box body 1; the box body 1 rotates at a high speed to enable the silicon powder particles to generate centrifugal force so as to push the silicon powder particles to move towards the grinding gap 4, and the silicon powder particles are ground into qualified particle sizes in the grinding gap 4 and then discharged.
In the present embodiment, specifically, after the atomization mechanism 2 atomizes the silicon powder suspension in the box 1, the atomized silicon powder suspension is dried by the hot air 31 conveyed into the box 1 by the hot air conveying mechanism 3 to form silicon powder particles; a grinding gap 4 is formed between the outer wall of the atomizing mechanism 2 and the inner wall of the box body 1, and silicon powder particles enter the grinding gap 4 due to centrifugal force through high-speed rotation of the box body 1, are ground into qualified particle sizes and then are discharged so as to control the particle sizes; the outer wall of the atomizing mechanism 2 and the inner wall of the box body 1 are utilized for grinding, so that the space of the equipment is saved.
As shown in fig. 2, in the present embodiment, the size of the grinding gap 4 is gradually reduced from the inside to the outside.
In the present embodiment, specifically, the size of the acceptable particle diameter determines the final size of the grinding gap 4; the grinding gap 4 is gradually reduced, so that the guiding effect is achieved, and the silicon powder particles can conveniently enter the grinding gap 4.
In this embodiment, the box 1 and the atomizing mechanism 2 are coaxially disposed and rotate in opposite directions.
In the present embodiment, the bottom of the box 1 is provided with a box driving assembly 11; the case driving assembly 11 includes: a case drive 111 and a case drive shaft 112; the box body driver 111 is adapted to drive the box body driving shaft 112 to rotate so as to rotate the box body 1.
In this embodiment, a plurality of guide bars 12 are uniformly distributed on the inner wall of the box body 1; the guide strip 12 extends from the bottom of the box body 1 to the opening of the box body 1; when the box body 1 rotates, the guide strip 12 guides the silicon powder particles in the box body 1 to move towards the grinding gap 4.
In the embodiment, specifically, the box body 1 and the atomizing mechanism 2 are coaxially arranged and rotate oppositely, so that the relative rotating speed of the box body and the atomizing mechanism is effectively improved, the grinding speed is higher, and the efficiency is higher; the guide strip 12 is arranged on the inner wall of the box body 1, so that the silicon powder particles in the box body 1 can conveniently enter the grinding gap 4 after generating centrifugal force.
As shown in fig. 3, in the present embodiment, the surface of the guide strip 12 facing the silicon powder particles when rotating includes: a slope 121 and a vertical face 122; the inclined surface 121 is located at an upper side of the vertical surface 122.
In the embodiment, the inner bottom surface of the box body 1 is covered with a hollow flow dividing cover 13; the box body driving shaft 112 is a hollow shaft, one end of the box body driving shaft extends into the shunt cover 13, and the other end of the box body driving shaft is connected with the hot air conveying mechanism 3 through a rotary joint 14; the guide strip 12 is of a hollow structure, the lower end face of the guide strip is provided with an opening, and the guide strip is communicated with the inside of the flow dividing cover 13; the guide strip 12 is provided with an air outlet 124 along the length direction; (ii) a The hot air 31 is suitable for being ejected from the air outlet 124 of each guide strip 12 after entering the diversion cover 13 through the box driving shaft 112.
In the present embodiment, the upper portion of the back surface of the guide bar 12 is provided with a flange 123; the air outlet 124 is opened at the lower side of the flange 123.
In the embodiment, specifically, the hollow box driving shaft 112 provides a more convenient passage for the hot air 31 to enter the box 1; the hot air conveying mechanism 3 continuously introduces hot air 31 into the box body 1, and the atomized silicon powder suspension is dried by the hot air 31 and then discharged from the grinding gap 4; in the process that the hot air 31 is discharged from the grinding gap 4, the diameter of the silicon powder particles with small particle size is driven to be discharged from the grinding gap 4; the silicon powder particles with larger particle sizes are guided by the guide strips 12 in the box body 1 and are ground into qualified particle sizes in the grinding gap 4 and then discharged.
In the present embodiment, specifically, the guide strip 12 plays a role of guiding and also plays a role of crushing the silicon powder particles; the guide strip 12 is rotated at a high speed to hit the silicon powder particles to break them, and the surface of the silicon powder particles facing the guide strip in the rotating process comprises: the inclined surface 121 and the vertical surface 122, wherein the inclined surface 121 can crush the silicon powder particles with large particle size and lift the silicon powder particles; the vertical surface 122 can cut silicon powder particles with large particle size and crush and guide larger particles that are not blown by hot air to be conveyed to the grinding gap 4.
In the present embodiment, specifically, the hot air 31 is output to the back surface of the guide bar 12, and the silicon powder particles can be prevented from accumulating on the back surface of the guide bar 12.
As shown in fig. 4, in the present embodiment, the atomizing mechanism 2 includes: the atomizer 21 and a water absorption layer 22 arranged on the side wall of the bottom of the atomizer 21; wherein the water absorbing layer 22 is provided with a water flow guide channel 23 communicated with the outside; the water-absorbing layer 22 is adapted to absorb moisture emitted from the drying of the silicon powder suspension and to discharge the absorbed moisture from the water flow guide channel 23 by the high-speed rotation of the atomizer 21.
In the present embodiment, specifically, the water-absorbing layer 22 absorbs water vapor evaporated from the silicon powder suspension; the water in the water absorbing layer 22 is thrown out along the water flow guide channel 23 by the high-speed rotation of the atomizer 21, and the problem that the water absorbing layer 22 needs to be replaced is solved.
In this embodiment, the present embodiment also provides a method for dehydrating silicon powder, including: the atomization mechanism 2 atomizes the silicon powder suspension and then discharges the silicon powder suspension into the box body 1; introducing hot air 31 into the box body 1 to dry the atomized silicon powder suspension in the box body 1 into silicon powder particles; the box body 1 generates centrifugal force on the silicon powder particles through high-speed rotation so as to push the silicon powder particles to move towards a grinding gap 4 between the outer wall of the atomization mechanism 2 and the inner wall of the box body 1; the box body 1 and the atomizing mechanism 2 rotate in the opposite direction, so that the silicon powder particles in the grinding gap 4 are ground into qualified particle sizes and then discharged through hot air 31.
In summary, after the silicon powder suspension is atomized in the box body 1 by the atomizing mechanism 2, the hot air 31 conveyed into the box body 1 by the hot air conveying mechanism 3 dries the atomized silicon powder suspension to form silicon powder particles; a grinding gap 4 is formed between the outer wall of the atomizing mechanism 2 and the inner wall of the box body 1, and silicon powder particles enter the grinding gap 4 due to centrifugal force through high-speed rotation of the box body 1, are ground into qualified particle sizes and then are discharged so as to control the particle sizes; the outer wall of the atomizing mechanism 2 and the inner wall of the box body 1 are utilized for grinding, so that the space of equipment is saved; the box body 1 and the atomizing mechanism 2 are coaxially arranged and rotate oppositely, so that the relative rotating speed of the box body and the atomizing mechanism is effectively improved, the grinding speed is higher, and the efficiency is higher; the inner wall of the box body 1 is provided with the guide strip 12, so that the silicon powder particles in the box body 1 can conveniently enter the grinding gap 4 after generating centrifugal force; the box body driving shaft 112 with a hollow design provides a more convenient channel for the hot air 31 to enter the box body 1; the hot air conveying mechanism 3 continuously introduces hot air 31 into the box body 1, and the atomized silicon powder suspension is dried by the hot air 31 and then discharged from the grinding gap 4; in the process that the hot air 31 is discharged from the grinding gap 4, the diameter of the silicon powder particles with small particle size is driven to be discharged from the grinding gap 4; silicon powder particles with larger particle sizes are guided in the box body 1 through the guide strips 12 and then are ground into qualified particle sizes in the grinding gap 4 and then discharged; the guide strip 12 plays a role in guiding and simultaneously also plays a role in crushing silicon powder particles; the guide strip 12 is rotated at a high speed to hit the silicon powder particles to break them, and the surface of the silicon powder particles facing the guide strip in the rotating process comprises: the inclined surface 121 and the vertical surface 122, wherein the inclined surface 121 can crush the silicon powder particles with large particle size and lift the silicon powder particles; the vertical surface 122 can cut off silicon powder particles with large particle size and smash larger particles which are not blown by hot air, and guide and convey the larger particles to the grinding gap 4; the hot air 31 is output from the back of the guide strip 12, so that the silicon powder particles can be prevented from being accumulated on the back of the guide strip 12; the water absorption layer 22 absorbs water vapor evaporated from the silicon powder suspension; the water in the water absorbing layer 22 is thrown out along the water flow guide channel 23 by the high-speed rotation of the atomizer 21, and the problem that the water absorbing layer 22 needs to be replaced is solved.
In the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the mechanism or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (9)
1. The utility model provides a silica flour dewatering device with particle size control function which characterized in that includes: a case having an upper end opened; and
the atomization mechanism is positioned at an opening at the upper end of the box body and is suitable for atomizing the silicon powder suspension and then discharging the silicon powder suspension into the box body; the hot air conveying mechanism is used for introducing hot air into the box body so as to dry the atomized silicon powder suspension liquid in the box body into silicon powder particles; wherein a grinding gap is formed between the outer wall of the atomization mechanism and the inner wall of the box body; the box body rotates at a high speed to enable the silicon powder particles to generate centrifugal force so as to push the silicon powder particles to move towards the grinding gap, and the silicon powder particles are ground into qualified particle sizes in the grinding gap and then discharged.
2. The silicon powder dehydrating device of claim 1, wherein the box and the atomizing mechanism are coaxially arranged and rotate in opposite directions.
3. The silicon powder dehydrating device of claim 2, wherein a box driving assembly is disposed at the bottom of the box; the case driving assembly includes: a tank driver and a tank drive shaft; the box body driver is suitable for driving the box body driving shaft to rotate so as to drive the box body to rotate.
4. The silicon powder dehydrating device of claim 3, wherein a plurality of guide strips are uniformly distributed on the inner wall of the box body; the guide strip extends from the bottom of the box body to the opening of the box body; when the box body rotates, the guide strip guides the silicon powder particles in the box body to move towards the grinding gap.
5. The silicon powder dewatering device of claim 4, wherein the surface of the guide strip facing the particles of silicon powder as the guide strip rotates comprises: a bevel and a vertical face; the inclined plane is located on the upper side of the vertical plane.
6. The silicon powder dehydrating device of claim 4, wherein the inner bottom cover of the box body is provided with a hollow flow dividing cover; the box body driving shaft is a hollow shaft, one end of the box body driving shaft extends into the shunt cover, and the other end of the box body driving shaft is connected with the hot air conveying mechanism through a rotary joint; the guide strip is of a hollow structure, and the lower end face of the guide strip is provided with an opening and is communicated with the interior of the flow dividing cover; the guide strip is provided with an air outlet along the length direction; the hot air is suitable for being sprayed out from the air outlets of the guide strips after entering the flow dividing cover through the box body driving shaft.
7. The silicon powder dehydrating apparatus of claim 6, wherein a flange is provided on an upper portion of a back surface of the guide strip; the air outlet is arranged on the lower side surface of the flange.
8. The silicon powder dewatering device according to claim 1, wherein the atomizing mechanism includes: the water absorption layer is arranged on the side wall of the bottom of the atomizer; wherein the water absorbing layer is provided with a water flow guide channel communicated with the outside; the water absorbing layer is suitable for absorbing moisture emitted by drying the silicon powder suspension, and the absorbed moisture is discharged from the water flow guide channel through the high-speed rotation of the atomizer.
9. A method for dehydrating silicon powder is characterized by comprising the following steps: the atomization mechanism atomizes the silicon powder suspension and then discharges the silicon powder suspension into the box body;
introducing hot air into the box body to dry the atomized silicon powder suspension in the box body into silicon powder particles; the box body rotates at a high speed to enable the silicon powder particles to generate centrifugal force so as to push the silicon powder particles to move towards a grinding gap between the outer wall of the atomization mechanism and the inner wall of the box body; the box body and the atomization mechanism rotate reversely to grind the silicon powder particles in the grinding gap into qualified particle sizes and then discharge the qualified particles through hot air.
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| CN202111641607.4A CN114259743B (en) | 2021-12-30 | 2021-12-30 | Silica powder dehydration device with particle size control function and dehydration method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111641607.4A CN114259743B (en) | 2021-12-30 | 2021-12-30 | Silica powder dehydration device with particle size control function and dehydration method |
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| CN114259743A true CN114259743A (en) | 2022-04-01 |
| CN114259743B CN114259743B (en) | 2023-04-28 |
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| US3731393A (en) * | 1970-06-13 | 1973-05-08 | Morinaga Milk Industry Co Ltd | Method of and apparatus for fluidizing particulate substance |
| US3850373A (en) * | 1972-07-12 | 1974-11-26 | Grolitsch Erhard | Atomizing device |
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| CN211865352U (en) * | 2019-12-19 | 2020-11-06 | 盐城爱菲尔菌菇装备科技股份有限公司 | Multistage grinder of dry type domestic fungus |
| CN112619188A (en) * | 2020-11-29 | 2021-04-09 | 陈建宏 | Drying equipment with air sweeping structure anti-sticking wall and implementation method thereof |
| CN112791433A (en) * | 2021-01-29 | 2021-05-14 | 福建未来药业有限公司 | Centrifugal spraying device for preparing biological enzyme |
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2021
- 2021-12-30 CN CN202111641607.4A patent/CN114259743B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB898316A (en) * | 1960-09-19 | 1962-06-06 | Metallgesellschaft Ag | Apparatus for keeping clean the inner wall of atomizing driers |
| US3731393A (en) * | 1970-06-13 | 1973-05-08 | Morinaga Milk Industry Co Ltd | Method of and apparatus for fluidizing particulate substance |
| US3850373A (en) * | 1972-07-12 | 1974-11-26 | Grolitsch Erhard | Atomizing device |
| AU5793673A (en) * | 1972-07-12 | 1975-01-16 | Grolitsch Erhard | Device for atomising liquid or pastelike substances |
| CN208049419U (en) * | 2018-01-02 | 2018-11-06 | 泉州市绿色低碳研究院 | A kind of spray dryer |
| CN110585752A (en) * | 2018-06-12 | 2019-12-20 | 丰能科技股份有限公司 | Structure of drying sprayer |
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| CN112791433A (en) * | 2021-01-29 | 2021-05-14 | 福建未来药业有限公司 | Centrifugal spraying device for preparing biological enzyme |
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