CN221163445U - Automatic replacement and weighing discharging recovery system for superfine silicon powder - Google Patents
Automatic replacement and weighing discharging recovery system for superfine silicon powder Download PDFInfo
- Publication number
- CN221163445U CN221163445U CN202322912260.3U CN202322912260U CN221163445U CN 221163445 U CN221163445 U CN 221163445U CN 202322912260 U CN202322912260 U CN 202322912260U CN 221163445 U CN221163445 U CN 221163445U
- Authority
- CN
- China
- Prior art keywords
- valve
- pipeline
- silicon powder
- ton bag
- iii
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 76
- 239000011863 silicon-based powder Substances 0.000 title claims abstract description 75
- 238000007599 discharging Methods 0.000 title claims abstract description 21
- 238000005303 weighing Methods 0.000 title claims abstract description 20
- 238000011084 recovery Methods 0.000 title claims abstract description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 120
- 239000000377 silicon dioxide Substances 0.000 claims description 60
- 235000013312 flour Nutrition 0.000 claims description 32
- 239000000843 powder Substances 0.000 claims description 28
- 230000000007 visual effect Effects 0.000 claims description 13
- 238000004064 recycling Methods 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 229910021420 polycrystalline silicon Inorganic materials 0.000 abstract description 5
- 229920005591 polysilicon Polymers 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 16
- 238000000034 method Methods 0.000 description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- 239000000428 dust Substances 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 239000002912 waste gas Substances 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000006722 reduction reaction Methods 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 4
- 239000005046 Chlorosilane Substances 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- KOPOQZFJUQMUML-UHFFFAOYSA-N chlorosilane Chemical compound Cl[SiH3] KOPOQZFJUQMUML-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- ZDHXKXAHOVTTAH-UHFFFAOYSA-N trichlorosilane Chemical compound Cl[SiH](Cl)Cl ZDHXKXAHOVTTAH-UHFFFAOYSA-N 0.000 description 3
- 239000005052 trichlorosilane Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
- Silicon Compounds (AREA)
Abstract
The utility model discloses an automatic replacement and weighing discharging recovery system for superfine silicon powder, which relates to the technical field of silicon powder recovery in polysilicon production and comprises a silicon powder filter, a silicon powder collecting tank, a ton bag, an electronic scale and DCS, wherein the silicon powder filter is communicated with the silicon powder collecting tank through a pipeline I, an N 2 replacement pipeline is connected to the silicon powder collecting tank, an exhaust port I at the top of the silicon powder collecting tank is connected with an exhaust treatment system through a pipeline II, a discharge port at the bottom of the silicon powder collecting tank is connected with the ton bag through a pipeline III, the pipeline III is connected with the ton bag through a quick plug-in tool, the quick plug-in tool is connected with the exhaust treatment system through a pipeline IV, and the ton bag is arranged on the electronic scale.
Description
Technical Field
The utility model belongs to the technical field of silicon powder recovery in polysilicon production, and particularly relates to an automatic superfine silicon powder replacement and weighing discharging recovery system.
Background
After the polysilicon is subjected to reduction reaction, the grain size of the silicon powder which is not deposited on the silicon rod is extremely small, the silicon powder enters a tail gas recovery system along with reduction tail gas, the silicon powder which is filtered and intercepted by a silicon powder filter is discharged into a silicon powder collecting tank, the silicon powder in the silicon powder collecting tank is usually replaced by nitrogen for many times manually, hydrogen and chlorosilane in fine silicon powder are replaced, and then the silicon powder is manually discharged into a silicon powder bag to be treated as solid waste. The method and the device for recycling waste silicon powder of a trichlorosilane synthetic furnace disclosed in 2012, 10, 24 and 24 have the application number of CN201210245222.0, and are named as the method and the device for recycling the waste silicon powder, wherein the related recycling method comprises the following steps: A. after the synthesis furnace is stopped normally, the synthesis furnace is replaced; B. after the replacement is qualified, connecting a synthetic furnace bottom silicon powder discharge valve with a silicon powder collection tank through a metal hose, and introducing nitrogen into the synthetic furnace through a nitrogen inlet pipeline; C. the silicon powder discharge valve is opened, nitrogen and silicon powder are brought into the silicon powder collection tank, and the nitrogen is emptied through the cloth bag filter at the top of the silicon powder collection tank, so that the silicon powder is collected into the silicon powder collection tank, and the whole recycling of the silicon powder is realized. Such a production system has the following drawbacks:
1. Because the silicon powder is very fine and has stronger adsorptivity, hydrogen and chlorosilane adsorbed on the surface of the fine silicon powder need to be manually replaced for a plurality of times, the manual replacement efficiency is low, and the dust is difficult to control the discharge speed and the discharge amount in the process of manually discharging the silicon powder into the silicon powder bag;
2. The dust pollution in the discharge process is serious, and the harm to the health and the environment of personnel is great;
3. during the discharge process, a large amount of dust is exposed to the air, with the risk of causing a fire explosion.
Aiming at the defects in the existing polysilicon tail gas recovery process, the existing process or system needs to be optimized, potential safety hazards are eliminated as much as possible, the production operation environment is improved, and the production efficiency is improved.
Disclosure of utility model
The utility model aims to solve the potential safety hazard of explosion risk in the process of recovering the fine silicon powder in the tail gas of the reduction furnace in the prior art, the discharge speed and the discharge amount are difficult to control, and meanwhile, the recovered fine silicon powder is seriously polluted, so that the application of the recovered silicon powder is limited. The utility model provides an automatic superfine silicon powder replacement and weighing discharging recovery system, and the recovered fine silicon powder is less polluted, and can be directly used as a raw material in a trichlorosilane synthesis section or processed into high-quality silicon powder to be used as a cold hydrogenation raw material.
In order to achieve the above object, the present utility model has the following technical scheme:
The utility model provides an automatic replacement of superfine silica flour, unloading recovery system weighs, including the silica flour filter, the silica flour collection tank, ton bag, the electronic scale, DCS, the silica flour filter passes through pipeline I and silica flour collection tank intercommunication, be connected with N 2 replacement pipeline on the silica flour collection tank, be equipped with valve I on the N 2 replacement pipeline, exhaust port I at silica flour collection tank top passes through pipeline II and connects exhaust treatment system, be equipped with valve II on the pipeline II, the discharge gate of silica flour collection tank bottom passes through pipeline III and ton bag is connected, be equipped with valve III on the pipeline III, connect through quick grafting frock between pipeline III and the ton bag, connect exhaust treatment system through pipeline IV fast grafting frock, be equipped with valve IV on the pipeline IV, ton bag is arranged in on the electronic scale, DCS respectively with valve I, valve II, valve III, valve IV and electronic scale control connection.
Preferably, the quick grafting frock can be dismantled with the opening of ton bag and be connected, install the ton bag of quick grafting frock and form the cavity that seals relatively, be equipped with feed inlet and gas vent II on the quick grafting frock, the feed inlet is connected with pipeline III, gas vent II connects pipeline IV, gas vent II and pipeline IV junction is equipped with the filter screen that filter fineness is 0.5-2 mu m.
Further, the valve I is preferably an electromagnetic valve, the valve II is preferably a cut-off valve, and the valve III is preferably a disc valve; the valve IV is preferably a ball valve.
Preferably, a pressure sensor is arranged on the silicon powder collecting tank, and the DCS is in control connection with the pressure sensor.
Preferably, the system further comprises an audible and visual alarm, and the audible and visual alarm is connected with the DCS in a control manner.
The utility model has the beneficial effects that:
1. According to the utility model, the silicon powder collecting tank and the ton bag are detachably connected by adopting the quick plugging tool, a relatively airtight space is formed between the silicon powder collecting tank and the ton bag, so that when the collected fine silicon powder is intercepted in the silicon powder collecting tank and is discharged into the ton bag, the situation that the fine silicon powder leaks into the air is reduced to the greatest extent, an electronic scale is arranged below the ton bag, a weight sensor in the electronic scale can upload a collected weight signal to a DCS, the DCS can judge whether the ton bag is filled with the silicon powder according to the received signal, and then the opening and closing of the corresponding valve are controlled or the opening of the corresponding valve is adjusted, the automatic weighing and discharging of the silicon powder are realized, the worker can quickly replace the ton bag, the whole discharging link is performed in a relatively airtight environment, the probability of exposing the fine silicon powder in the air is reduced, the exposure time of the silicon powder in the air is shortened, the risk of causing the explosion is reduced, and meanwhile, the quality of the collected fine silicon powder is also improved, so that the recovered fine silicon powder is less polluted and can be directly used as raw materials or processed into high-quality silicon powder in a trichlorosilane synthesis section, or a polysilicon production cost is reduced.
2. According to the quick plugging tool, the structure is ingenious and simple, the operation is convenient, the effect is good, the quick plugging tool is used for assisting a worker in quickly replacing the ton bags, the pollution of the recovered fine silicon powder is reduced, the labor intensity of the worker is reduced, and meanwhile, the working time of the worker in a dust environment is shortened as much as possible.
3. In the utility model, the valve I is preferably an electromagnetic valve, the valve II is preferably a cut-off valve, and the valve III is preferably a remote pneumatic disc valve; the valve IV is preferably a hard seal wear-resistant ball valve, the selection of the valves at all positions is conducive to realizing a remote automatic control silicon powder discharging system, and the stability and the safety are high.
4. According to the utility model, the silicon powder collecting tank is provided with the pressure sensor, and the DCS is in control connection with the pressure sensor, so that the pressure in the silicon powder collecting tank can be conveniently monitored, and the monitoring of whether equipment operates normally or not by workers is facilitated.
5. In the utility model, an audible and visual alarm is also arranged in the system and is connected with the DCS, the DCS receives a feedback signal of the electronic scale, and when the ton bag is judged to be full (or charged to a preset value), the DCS controls the corresponding valve I, valve II, valve III and valve IV to be opened or closed or the opening degree is adjusted, and meanwhile, an early warning signal is sent out through the audible and visual alarm, so that the personnel can be conveniently prompted to replace the ton bag in time. In addition, when the pressure signal that pressure sensor on the silica flour collection jar returned to DCS shows too high (be higher than the default), DCS control audible and visual alarm sent early warning signal, be convenient for in time suggestion staff device has trouble (such as filter mechanism takes place to block up etc.), guarantee equipment normal operating.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
FIG. 2 is a schematic structural view of one embodiment of a quick connect tool.
FIG. 3 is a schematic diagram of another embodiment of an automatic superfine silica powder replacement, weighing, blanking and recycling system.
1, A silicon powder filter; 2. a silicon powder collection tank; 3. a ton bag; 4. an electronic scale; 5. DCS; 6. a pipeline I; 7. n 2 displacement lines; 8. a valve I; 9. a pipeline II; 10. an exhaust gas treatment system; 11. a valve II; 12. a pipeline III; 13. a valve III; 14. quick plugging tool; 15. a pipeline IV; 16. a valve IV; 17. a pressure sensor; 18. an audible and visual alarm; 19. a reducing process gas line; 2.1, exhaust port I; 2.2, a discharge hole; 3.1, opening; 14.1, a feed inlet; 14.2, exhaust port II; 14.3, a filter screen.
Detailed Description
The present utility model will be described in further detail with reference to examples, but embodiments of the present utility model are not limited thereto.
Example 1
The embodiment is the most basic implementation mode, an automatic superfine silica powder replacement and weighing unloading recovery system comprises a silica powder filter 1, a silica powder collecting tank 2, a ton bag 3, an electronic scale 4 and a DCS5, wherein the silica powder filter 1 is communicated with the silica powder collecting tank 2 through a pipeline I6, an N 2 replacement pipeline 7 is connected to the silica powder collecting tank 2, a valve I8 is arranged on the N 2 replacement pipeline 7, an exhaust port I2.1 at the top of the silica powder collecting tank 2 is connected with an exhaust gas treatment system 10 through a pipeline II 9, a valve II 11 is arranged on the pipeline II 9, a discharge port 2.2 at the bottom of the silica powder collecting tank 2 is connected with the ton bag 3 through a pipeline III 12, a valve III 13 is arranged on the pipeline III 12, the pipeline III 12 is connected with the ton bag 3 through a quick plug tool 14, a valve IV 16 is arranged on the pipeline IV 15, the ton bag 3 is arranged on the electronic scale 4, and the DCS5 is respectively connected with the valve I8, the valve II 11, the valve III 13, the valve IV 16 and the electronic control.
When the superfine silicon powder automatic replacement and weighing and discharging recovery system is used, N 2 and waste gas (mainly hydrogen and chlorosilane) are automatically replaced through the DCS5 control valve I8, gas replacement efficiency is improved, in addition, the ton bag 3 is arranged on the electronic scale 4 provided with the weight sensor, the electronic scale 4 feeds back the weight information of the collected ton bag 3 to the DCS5 timely, the DCS5 judges whether the ton bag 3 is full or not by comparing the received weight signal with a preset quality value, after the ton bag 3 is monitored to be full, the DCS5 controls the valve III 13 and the valve IV 16 to be closed, the ton bag 3 is replaced rapidly, the whole fine silicon powder replacement and weighing and discharging process is carried out in a relatively airtight environment, dust is reduced from being discharged to a working environment, the condition that the fine silicon powder is exposed in the air is also reduced, and the quality of the recovered silicon powder is improved.
Example 2
The embodiment is further optimized in embodiment 1, and the difference is that, referring to fig. 2, the quick plugging tool 14 is detachably connected with the opening 3.1 of the ton bag 3, the ton bag 3 with the quick plugging tool 14 is provided with a relatively closed cavity, the quick plugging tool 14 is provided with a feed inlet 14.1 and an exhaust outlet II 14.2, the feed inlet 14.1 is connected with a pipeline III 12, the exhaust outlet II 14.2 is connected with a pipeline IV 15, and a filter screen 14.3 with a filtering precision is arranged at the joint of the exhaust outlet II 14.2 and the pipeline IV 15.
Furthermore, the valve I8 is an electromagnetic valve, the valve II 11 can be an automatic shut-off valve or an electric ball valve, and the valve III 13 can be a disc valve; valve IV 16 may be a ball valve or a butterfly valve.
Example 3
This embodiment differs from embodiments 1-2 in that, referring to fig. 3, a pressure sensor 17 is provided on the silicon powder collection tank 2, and the DCS5 is in control connection with the pressure sensor 17.
Example 4
This embodiment differs from embodiments 1-3 in that, referring to fig. 3, an audible and visual alarm 18 is further included, and the audible and visual alarm 18 is in control connection with DCS 5.
In this embodiment, when the equipment in the whole system is abnormal, the DCS5 can control the audible and visual alarm 18 to perform early warning, so as to prompt the staff of the abnormal equipment.
Example 5
The embodiment is convenient for the public to understand the scheme, and takes an automatic superfine silicon powder replacement and weighing discharging recovery system currently used by the company as an example to further explain the scheme.
Referring to fig. 3, the superfine silica powder automatic replacement and weighing discharging recovery system comprises a silica powder filter 1, a silica powder collecting tank 2, a ton bag 3, an electronic scale 4 and a DCS5, wherein the silica powder filter 1 is communicated with the silica powder collecting tank 2 through a pipeline I6, an N 2 replacement pipeline 7 is connected to the silica powder collecting tank 2, a valve I8 is arranged on the N 2 replacement pipeline 7, an exhaust port I2.1 at the top of the silica powder collecting tank 2 is connected with a waste gas treatment system 10 through a pipeline II 9, a valve II 11 is arranged on the pipeline II 9, a discharge port 2.2 at the bottom of the silica powder collecting tank 2 is connected with the ton bag 3 through a pipeline III 12, a valve III 13 is arranged on the pipeline III 12, the pipeline III 12 is connected with the ton bag 3 through a quick plug tool 14, the quick plug tool 14 is connected with the waste gas treatment system 10 through a pipeline IV 15, a valve IV 16 is arranged on the pipeline IV 15, the ton bag 3 is arranged on the electronic scale 4, and the DCS5 is respectively connected with the valve I8, the valve II 11, the valve III 13, the valve IV 16 and the electronic scale control.
In the embodiment, in order to ensure that the system can realize remote automatic control for discharging silicon powder and has high stability and safety, the valve I8 is an electromagnetic valve, the valve II 11 is an automatic cut-off valve, and the valve III 13 is an electric disc valve; the valve IV 16 is a hard seal wear-resistant ball valve, the silica powder collecting tank 2 is provided with a pressure sensor 17 and further comprises an audible and visual alarm 18, and the DCS5 is respectively in control connection with the pressure sensor 17 and the audible and visual alarm 18.
In this embodiment, the quick plugging tool 14 is detachably connected with the opening 3.1 of the ton bag 3, the ton bag 3 provided with the quick plugging tool 14 forms a relatively closed cavity, the quick plugging tool 14 is provided with a feed inlet 14.1 and an exhaust outlet II 14.2, the feed inlet 14.1 is connected with a pipeline III 12, the exhaust outlet II 14.2 is connected with a pipeline IV 15, a filter screen 14.3 with a filtering precision of 1 mu m is arranged at the joint of the exhaust outlet II 14.2 and the pipeline IV 15, and the filtering precision of the filter screen 14.3 is generally controlled within a range of 0.5-2 mu m.
When the superfine silica powder automatic replacement and weighing discharging recovery system is used, the silica powder filter 1 receives process gas from a reduction furnace through a reduction process gas pipeline 19, most of fine silica powder with the particle size of more than 1 mu m is intercepted after being filtered by the silica powder filter 1, and the residual gas phase (with few superfine silica powder entrained therein) is discharged from the pipeline at the top of the silica powder filter 1 to the waste gas treatment system 10 or the next treatment system. The silica flour after the silica flour filter 1 interception is discharged to silica flour collection tank 2 through pipeline I6, sets up automatic replacement procedure to silica flour collection tank 2, according to the pressure in the silica flour collection tank 2 (detect wherein pressure through pressure sensor 17) control N 2 replace valve I8 on the pipeline to carry out pressurization or pressure release to silica flour collection tank 2 and replace to qualified to gas, effectively improve artifical replacement inefficiency, the unstable scheduling factor of replacement effect causes the poor problem of replacement effect.
Put into the travelling car with ton bag 3, push away put on the site that is equipped with electronic scale 4, and install quick grafting frock 14 by the manual work, set up silica flour collection tank 2 and arrange silica flour procedure, and set up the protection of the interim row silica flour of superpressure interlocking, it is automatic to arrange silica flour collection tank 2 silica flour into the silica flour collection bag, the waste gas of arranging silica flour collection bag, after filtering through the filter core, discharge in exhaust gas treatment system 10 or empty emission, when weighing system monitors the collection bag weight and reaches the settlement weight, stop arranging silica flour procedure, and send out the warning, prompt operating personnel to change ton bag 3, get into next round row silica flour procedure.
The embodiment realizes that the silicon powder in the silicon powder collecting tank 2 is automatically fed into the ton bag 3 under the basically airtight condition, thereby greatly improving the working environment and ensuring the health of operators. Meanwhile, the automatic weighing control system is arranged, so that relevant staff can remotely master the silicon powder discharging condition, weighing alarm is arranged, the staff is reminded to replace the ton bag 3 in time, and the whole silicon powder discharging process is automatic, safer and more efficient.
Claims (5)
1. An automatic replacement of superfine silica flour, unloading recovery system that weighs, its characterized in that: including silica flour filter (1), silica flour collection tank (2), ton bag (3), electronic scale (4), DCS (5), silica flour filter (1) is connected with silica flour collection tank (2) through pipeline I (6), be connected with N 2 replacement pipeline (7) on silica flour collection tank (2), be equipped with valve I (8) on N 2 replacement pipeline (7), exhaust port I (2.1) at silica flour collection tank (2) top is connected exhaust treatment system (10) through pipeline II (9), be equipped with valve II (11) on pipeline II (9), discharge gate (2.2) of silica flour collection tank (2) bottom are connected with ton bag (3) through pipeline III (12), be equipped with valve III (13) on pipeline III (12), be connected through quick grafting frock (14) between pipeline III (12) and ton bag (3), be equipped with valve IV (16) on IV (15) through pipeline IV (15) connection exhaust treatment system, ton bag (3) are arranged in electronic scale (4), valve III (8), valve II and valve III (16) are connected respectively.
2. An automatic superfine silica powder replacement and weighing and discharging recycling system according to claim 1, characterized in that: quick grafting frock (14) can dismantle with opening (3.1) of ton bag (3) and be connected, install ton bag (3) of quick grafting frock (14) and form relative confined cavity, be equipped with feed inlet (14.1) and gas vent II (14.2) on quick grafting frock (14), feed inlet (14.1) are connected with pipeline III (12), gas vent II (14.2) connecting line IV (15), gas vent II (14.2) are equipped with filter screen (14.3) that filtration precision is 0.5-2 mu m with pipeline IV (15) junction.
3. An automatic superfine silica powder replacement and weighing and discharging recycling system according to claim 1, characterized in that: the valve I (8) is an electromagnetic valve, the valve II (11) is a cut-off valve, and the valve III (13) is a disc valve; the valve IV (16) is a ball valve.
4. An automatic superfine silica powder replacement and weighing and discharging recycling system according to claim 1, characterized in that: the silicon powder collecting tank (2) is provided with a pressure sensor (17), and the DCS (5) is in control connection with the pressure sensor (17).
5. An automatic superfine silica powder replacement and weighing and discharging recycling system according to claim 1, characterized in that: the system also comprises an audible and visual alarm (18), and the audible and visual alarm (18) is in control connection with the DCS (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322912260.3U CN221163445U (en) | 2023-10-30 | 2023-10-30 | Automatic replacement and weighing discharging recovery system for superfine silicon powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322912260.3U CN221163445U (en) | 2023-10-30 | 2023-10-30 | Automatic replacement and weighing discharging recovery system for superfine silicon powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221163445U true CN221163445U (en) | 2024-06-18 |
Family
ID=91460495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322912260.3U Active CN221163445U (en) | 2023-10-30 | 2023-10-30 | Automatic replacement and weighing discharging recovery system for superfine silicon powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221163445U (en) |
-
2023
- 2023-10-30 CN CN202322912260.3U patent/CN221163445U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103894278B (en) | A kind of powder song equipment and the method for the bent powder of preparation thereof | |
| CN202460788U (en) | Closed wind belt feed type aluminum oxide crust block crushing production line device | |
| CN221163445U (en) | Automatic replacement and weighing discharging recovery system for superfine silicon powder | |
| CN202538894U (en) | Crushing production line for alumina crusting blocks with various finished product sizes | |
| CN203803607U (en) | Internal dust exhaust device of jaw crusher | |
| CN201669137U (en) | Alumina crust block crushing production line | |
| CN211689134U (en) | Novel blast furnace top pressure-equalizing gas and blast furnace damping-down waste gas integrated treatment system | |
| CN109604597B (en) | Powder recovery device in printing process of SLM (selective laser deposition) part | |
| CN110314400A (en) | A kind of screenings tapping equipment and its discharge method for organosilicon production | |
| CN208201071U (en) | It is vented automatically for reduction and distillation furnace in titanium sponge production and the device of argon filling | |
| CN204412329U (en) | A kind of calcium carbide coarse crushing system | |
| CN111004650A (en) | Dust removal device and dust removal method for gas containing dust and tar | |
| CN202169199U (en) | Bucket lifter production line device for crushing alumina crust block | |
| CN205893304U (en) | Blast furnace coal injection system jetting jar pressure relief device | |
| CN211012464U (en) | Combustion size classification device for iron-making sintering | |
| CN202460787U (en) | Open wind belt material type alumina crusting block crushing production line device | |
| CN210647271U (en) | Gasifying and precipitating type slag remover device for cement powder | |
| CN210359237U (en) | Atmosphere protection metal powder screening plant | |
| CN213101299U (en) | Pipeline for gas transportation | |
| CN211997909U (en) | Ash conveying pipeline system for economizer | |
| CN208465883U (en) | A kind of dustless automatic charging reactor tank | |
| CN112371212A (en) | Environment-friendly crushing and collecting system and method for copper-containing material | |
| CN204182467U (en) | Coal pulverizer pebble coal equal pressure discharge device | |
| CN204182466U (en) | Coal pulverizer pebble coal equal pressure discharge device collecting box | |
| CN218200073U (en) | Feed bin pull throughs in KR desulfurization |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |