CN214079241U - Surface heat treatment equipment for ultrafine powder - Google Patents
Surface heat treatment equipment for ultrafine powder Download PDFInfo
- Publication number
- CN214079241U CN214079241U CN202023133212.7U CN202023133212U CN214079241U CN 214079241 U CN214079241 U CN 214079241U CN 202023133212 U CN202023133212 U CN 202023133212U CN 214079241 U CN214079241 U CN 214079241U
- Authority
- CN
- China
- Prior art keywords
- roller
- heat treatment
- powder
- surface heat
- air
- 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
- 239000000843 powder Substances 0.000 title claims abstract description 48
- 238000010438 heat treatment Methods 0.000 title claims abstract description 41
- 239000000428 dust Substances 0.000 claims abstract description 22
- 239000000523 sample Substances 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000005485 electric heating Methods 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 claims description 2
- 230000006698 induction Effects 0.000 claims description 2
- 239000011810 insulating material Substances 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 239000000741 silica gel Substances 0.000 claims description 2
- 229910002027 silica gel Inorganic materials 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 claims 1
- 238000003756 stirring Methods 0.000 abstract description 7
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 230000001939 inductive effect Effects 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 238000011109 contamination Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 18
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 238000007599 discharging Methods 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 125000004429 atom Chemical group 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000006213 oxygenation reaction Methods 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- TUJKJAMUKRIRHC-UHFFFAOYSA-N hydroxyl Chemical compound [OH] TUJKJAMUKRIRHC-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000004434 sulfur atom Chemical group 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
Abstract
The utility model relates to a heat treatment device for the surface of ultrafine powder, which comprises a machine body, a roller body arranged in the machine body and a driving device for driving the roller body to rotate, wherein a guide plate for guiding and pushing the powder is arranged in the roller body, and temperature measuring probes are arranged inside and outside the roller body; one end of the roller body is provided with a roller main cover; the main cover of the roller is provided with a gas circuit end cover, the center of the gas circuit end cover is provided with a gas inlet and outlet device, and the gas inlet and outlet devices are connected with a filter pipe fitting; the drum body is provided with a heating source structure at the bottom, a door bin and a discharge hole are arranged on the drum body, and a dust removal air inducing port is arranged at the top of the drum body and connected to a dust remover. The utility model discloses when the cylinder of powder under no axle center pole stirring rotated, the stirring that rolls was driven to the powder, and the powder is heated invalid and each position reaction is even abundant, and the control of giving vent to anger has guaranteed with the dust absorption setting that interior system and external environment do not have the mutual contamination emergence.
Description
Technical Field
The utility model relates to an ultra-fine powder surface modification handles field, concretely relates to drum-type surface heat treatment equipment.
Background
With the development of industrial technology, ultrafine powders of nanometer, submicron and micron levels are widely applied to other industrial fields such as consumer electronics, automotive electronics, communications, industrial automation, aerospace and the like. In order to meet the relevant use performance of the product, the superfine powder needs to be subjected to surface treatment, including surface oxygenation, surface hydroxyl radical removal, surface vulcanization and the like. The existing surface heat treatment structure mainly comprises two types: 1. the baking box type surface heat treatment has the defects that the temperature inside and outside the powder pile is not uniform and uniform stirring is not carried out because the powder inside is in a stacking mode, and uniform and sufficient surface heat treatment cannot be carried out. 2. The heat treatment structure with stirring is shaft rod insertion type stirring, which easily causes agglomeration of powder under the action of mechanical force and influences the use of the powder and the effect of surface heat treatment.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the above-mentioned not enough, provide a novel be used for superfine powder surface heat treatment equipment.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a surface heat treatment device for ultrafine powder comprises a machine body, a roller barrel arranged in the machine body and a driving device for driving the roller barrel to rotate, wherein a guide plate for guiding and pushing the powder is arranged in the roller barrel, and temperature measuring probes are arranged inside and outside the roller barrel and used for measuring the temperature in a barrel and the surface temperature of the roller barrel; one end of the roller body
A main roller cover is arranged for controlling the powder to enter and exit; the roller main cover is provided with a gas path end cover for controlling gas inlet and outlet, the center of the gas path end cover is provided with a gas inlet and outlet device, and the gas inlet and outlet device is connected with a filtering pipe fitting for filtering gas; the machine body is provided with a door bin and a discharge port, the door bin and the discharge port are used for isolating the interior of the machine from an external environment and switching materials, and the top of the machine body is provided with a dust removal air induction port which is connected to a dust remover.
As an improvement, the main cover of the roller is provided with a flange type large cover and a small cover which are used for sealing the roller body and preventing the overflow of ultrafine powder dust during the operation of the roller body.
Preferably, the dust remover is a bag-type dust remover.
Preferably, the axial position of the barrel body and the outer surface of the middle part are respectively provided with a temperature measuring probe, so that the required working temperature in the barrel can be accurately and constantly controlled.
Further, the roller cylinder is supported by the supporting rollers and provides sliding support for the roller to roll.
Preferably, the supporting rollers are made of silica gel, are convenient to replace, and avoid the abrasion of the iron rollers to enter products to cause product pollution.
Further, a gap between the roller body and the machine body is filled with a high-temperature-resistant heat-insulating material.
Preferably, the heating source structure is an electric heating wire, and the electric heating wire is uniformly distributed on the middle lower part of the barrel.
Furthermore, a protection screen plate is arranged between the driving device and the roller body and used for protecting the driving end.
Preferably, the driving device is driven by a motor.
Furthermore, the air inlet pipeline of the air inlet and outlet device is externally connected with an air inlet source, a porous filter pipe extends into the roller, the air inlet pipe is connected with the porous filter pipe through a coaxial rotatable sleeve with a sealing structure, the air inlet porous filter pipe is fixed on the air path end cover and rotates together with the roller, and the air inlet pipe can not rotate along with the roller due to the coaxial rotatable connection with the sealing structure. The inside of an air outlet pipe of the air inlet and outlet device is provided with a porous filter pipe extending into the roller, the air outlet porous filter pipe is fixed on the air path end cover and rotates along with the roller, and an air outlet of the air outlet porous pipe is communicated to the outer side of the air path end cover.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses when the cylinder of powder under no axle center pole stirring rotated, the stirring that rolls was driven to the powder, and the powder is heated ineffectively and each position reaction is even abundant, and seal structure has guaranteed that the condition of thermal treatment process is strict and controllable, and the control of admitting air and giving vent to anger has guaranteed that interior system and external environment do not have the mutual contamination emergence with the dust absorption setting. Meanwhile, the accurate temperature process can effectively prevent local overheating or uneven heating.
Drawings
Fig. 1 is a front view of the structure of the present invention.
In the figure: 1. the device comprises a roller barrel, a guide plate, a temperature measuring probe, a driving device, a gas inlet and outlet device, a filtering pipe fitting, a roller main cover, a gas path end cover, a door bin, a discharging hole, a dust removing and air inducing hole, a supporting roller, a heating source structure, a machine body, a protection screen plate, a bag-type dust remover, a protection screen plate, a bag-type dust remover, a fan, an air source inlet and an air source outlet, wherein the roller barrel is 2, the guide plate is 3, the temperature measuring probe is 4, the driving device is 5, the gas inlet and outlet device is 6, the filtering pipe fitting, the roller main cover is 7, the gas path end cover is 8, the door bin is 9, the discharging hole is 10, the dust removing and air inducing hole is 11, 12, the supporting roller is 13, the heating source structure, 14, the machine body, 15, the protection screen plate, 16, the bag-type dust remover, 17, the induced draft fan, 18 and the gas source inlet and the outlet.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in figure 1, the utility model relates to a heat treatment device for ultrafine powder, which comprises a roller barrel body 1, wherein the inner welding of the roller barrel body is provided with a guide plate 2 for powder guide and push flow, the barrel body 1 is arranged in a machine body 14, and a high temperature resistant heat insulation material is filled in the gap between the two. The axial position of the cylinder body and the middle outer surface are provided with temperature measuring probes 3 for measuring the temperature in the barrel and the surface temperature of the cylinder body. The driving device 4 drives the roller 1 to rotate, the air inlet and outlet device 5 is installed at the center of the air path end cover 8, and the air inlet and outlet device is connected with the filtering pipe fitting 6 for filtering air. The air path end cover 8 is used for controlling air inlet and outlet and is connected with the roller main cover 7, and the roller main cover 7 is used for controlling powder inlet and outlet and is connected with the roller body 1. The door bin 9 is connected with the discharge hole 10 and the machine body shell 14 and used for isolating the interior of the equipment from the external environment and transferring materials, the dedusting induced air hole 11 is connected to the deduster 16 through a valve and a pipeline, and the outward-raised dust is collected by the bag deduster 16 under the suction of the induced draft fan 17. The supporting rollers 12 are used for supporting the roller body 1 and providing sliding support for rolling of the roller, the heating source structures 13 are uniformly distributed and installed on the middle lower portion of the roller body, the protection screen plate 15 is used for protecting the driving end, and the air source inlet and outlet 18 is used for connecting superfine powder into gas in a heat treatment mode and exhausting gas.
The utility model discloses the concrete implementation process: a roller main cover 7 of the superfine powder surface heat treatment equipment is arranged on a roller barrel body 1, superfine powder to be treated is quantitatively added into the roller barrel body according to requirements, a gas path end cover 8 and the roller main cover 7 are covered, a gas source inlet at the end cover is connected with a required external gas source, the gas inflow is opened according to process requirements, the heat treatment temperature and time are set, a roller rotating switch of the superfine powder surface heat treatment equipment is opened, and the superfine powder heat treatment work is started. After the heat treatment process is finished, the air inlet source is closed, the air path end cover and the roller main cover are detached, the door bin 9 is closed, the draught fan 17 is opened, the roller reversing switch is opened, the discharging is started, and after dust generated in the discharging process is filtered by the bag-type dust remover 16 through the draught pipeline, clean gas is discharged or recycled.
In the heat treatment process, when inert gas is added, water molecule steam generated by hydroxide radicals on the surface of the powder due to the heat treatment effect is carried out, and double-bond oxygen radicals generated by two hydroxide radicals on the surface of the powder achieve the effect of removing the hydroxide radicals.
In the heat treatment process, when an air source with oxygen is added, the metal atoms exposed on the surface of the powder are activated by heat treatment, and an oxide film is structurally produced, so that the surface oxygenation effect is achieved.
In the heat treatment process, after substances with sulfur elements are added, the metal atoms exposed on the surface of the powder, or the reaction points of the metal and oxygen, or the metal and hydroxyl, and the like, and the sulfur atom structure are produced to form a vulcanized metal film, so that the surface sulfur adding effect is achieved.
It is not intended to limit the scope of this patent, and other elements or materials may be added to achieve the corresponding surface treatment or passivation and surface activation.
Claims (10)
1. A surface heat treatment device for ultrafine powder is characterized in that: the powder guiding and pushing device comprises a machine body, a roller barrel arranged in the machine body and a driving device for driving the roller barrel to rotate, wherein a guide plate for powder guiding and pushing flow is arranged in the roller barrel, and temperature measuring probes are arranged inside and outside the roller barrel and used for measuring the temperature in the barrel and the surface temperature of the roller barrel; one end of the roller body is provided with a roller main cover for controlling the powder to enter and exit; the roller main cover is provided with a gas path end cover for controlling gas inlet and outlet, the center of the gas path end cover is provided with a gas inlet and outlet device, and the gas inlet and outlet device is connected with a filtering pipe fitting for filtering gas; the machine body is provided with a door bin and a discharge port, the door bin and the discharge port are used for isolating the interior of the machine from an external environment and switching materials, and the top of the machine body is provided with a dust removal air induction port which is connected to a dust remover.
2. A surface heat treatment apparatus for ultra fine powders as defined in claim 1 wherein: the main cover of the roller is a flange type large cover and a small cover which are used for sealing the roller body and preventing the overflow of ultrafine powder dust during the operation of the roller body.
3. A surface heat treatment apparatus for ultra fine powders as defined in claim 1 wherein: the dust remover is a bag-type dust remover.
4. A surface heat treatment apparatus for ultra fine powders as defined in claim 1 wherein: and the axial position of the cylinder body and the middle outer surface are respectively provided with a temperature measuring probe.
5. A surface heat treatment apparatus for ultra fine powders as defined in claim 1 wherein: the roller cylinder is supported by the supporting rollers and provides sliding support for the roller to roll.
6. An apparatus for the surface heat treatment of ultrafine powders as defined in claim 5, wherein: the supporting rollers are made of silica gel, are convenient to replace, and avoid the abrasion of the iron rollers to enter products to cause product pollution.
7. A surface heat treatment apparatus for ultra fine powders as defined in claim 1 wherein: and a gap between the roller body and the machine body is filled with a high-temperature-resistant heat-insulating material.
8. A surface heat treatment apparatus for ultra fine powders as defined in claim 1 wherein: the heating source structure is an electric heating wire, and the heating source structure is uniformly distributed on the middle lower part of the barrel.
9. A surface heat treatment apparatus for ultra fine powders as defined in claim 1 wherein: and a protective screen plate is arranged between the driving device and the cylinder body of the roller and used for protecting the driving end.
10. A surface heat treatment apparatus for ultra fine powders as defined in claim 1 wherein: the air inlet pipe of the air inlet and outlet device is externally connected with an air inlet source, a porous filter pipe extends into the roller, the air inlet pipe is connected with the porous filter pipe through a coaxial rotatable sleeve with a sealing structure, the air inlet porous filter pipe is fixed on the air path end cover and rotates together with the roller, the porous filter pipe extending into the roller is arranged inside the air outlet pipe of the air inlet and outlet device, the air outlet porous filter pipe is fixed on the air path end cover and rotates together with the roller, and the air outlet of the air outlet porous pipe is communicated to the outer side of the air path end cover.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023133212.7U CN214079241U (en) | 2020-12-23 | 2020-12-23 | Surface heat treatment equipment for ultrafine powder |
| PCT/CN2021/120232 WO2022134696A1 (en) | 2020-12-23 | 2021-09-24 | Device used for ultra-fine powder surface heat treatment |
| TW110215003U TWM627687U (en) | 2020-12-23 | 2021-12-16 | Surface heat treatment equipment for ultrafine powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023133212.7U CN214079241U (en) | 2020-12-23 | 2020-12-23 | Surface heat treatment equipment for ultrafine powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214079241U true CN214079241U (en) | 2021-08-31 |
Family
ID=77431668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023133212.7U Active CN214079241U (en) | 2020-12-23 | 2020-12-23 | Surface heat treatment equipment for ultrafine powder |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN214079241U (en) |
| TW (1) | TWM627687U (en) |
| WO (1) | WO2022134696A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114523126A (en) * | 2022-01-11 | 2022-05-24 | 陈良泉 | Powder preheating equipment for metal additive manufacturing |
| WO2022134696A1 (en) * | 2020-12-23 | 2022-06-30 | 江苏博迁新材料股份有限公司 | Device used for ultra-fine powder surface heat treatment |
| CN114682775A (en) * | 2022-06-01 | 2022-07-01 | 成都大学 | Heat treatment device for alloy powder processing |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2830418Y (en) * | 2005-10-27 | 2006-10-25 | 董永安 | Rotating heat treatment furnace |
| CN101392987B (en) * | 2008-10-30 | 2011-08-31 | 中国船舶重工集团公司第七二五研究所 | Design and structure for controllable atmosphere rotating furnace for oxidizing albronze alloy powder |
| FR2996562B1 (en) * | 2012-10-04 | 2019-11-01 | Renault S.A.S | THERMAL TREATMENT DEVICE AND HEAT TREATMENT METHOD THEREOF |
| CN103192084B (en) * | 2013-05-05 | 2015-11-25 | 沈阳中北真空磁电科技有限公司 | A kind of Rotary vacuum heat treatment equipment |
| JP6451598B2 (en) * | 2015-11-09 | 2019-01-16 | 信越化学工業株式会社 | Method of manufacturing negative electrode active material for rotary cylindrical furnace and non-aqueous electrolyte secondary battery |
| CN208787531U (en) * | 2018-09-28 | 2019-04-26 | 江西飞翔实业有限公司 | A kind of aluminium alloy heating treatmentfurnace |
| CN214079241U (en) * | 2020-12-23 | 2021-08-31 | 江苏博迁新材料股份有限公司 | Surface heat treatment equipment for ultrafine powder |
-
2020
- 2020-12-23 CN CN202023133212.7U patent/CN214079241U/en active Active
-
2021
- 2021-09-24 WO PCT/CN2021/120232 patent/WO2022134696A1/en active Application Filing
- 2021-12-16 TW TW110215003U patent/TWM627687U/en unknown
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022134696A1 (en) * | 2020-12-23 | 2022-06-30 | 江苏博迁新材料股份有限公司 | Device used for ultra-fine powder surface heat treatment |
| CN114523126A (en) * | 2022-01-11 | 2022-05-24 | 陈良泉 | Powder preheating equipment for metal additive manufacturing |
| CN114682775A (en) * | 2022-06-01 | 2022-07-01 | 成都大学 | Heat treatment device for alloy powder processing |
| CN114682775B (en) * | 2022-06-01 | 2022-08-02 | 成都大学 | Heat treatment device for alloy powder processing |
Also Published As
| Publication number | Publication date |
|---|---|
| TWM627687U (en) | 2022-06-01 |
| WO2022134696A1 (en) | 2022-06-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN214079241U (en) | Surface heat treatment equipment for ultrafine powder | |
| CN106440720A (en) | Efficient drying equipment used for graphite powder wet manufacturing | |
| CN103128869A (en) | Waste plastic recycling system | |
| CN107825219A (en) | A kind of iron filings remove system | |
| CN108787010A (en) | A kind of roller sand making grading machine | |
| CN210010093U (en) | Spraying equipment is used in processing of stainless steel filter bag | |
| CN208865699U (en) | A kind of roller sand making gradation machine | |
| CN115325816B (en) | High-purity titanium dioxide production equipment and process thereof | |
| CN217131713U (en) | Powerful stirring dryer for tar residue treatment | |
| CN209890962U (en) | Fluff pulp recovery equipment | |
| CN213222458U (en) | Chemical resin production is with smashing drying device | |
| CN211221686U (en) | Nylon casting machine | |
| CN107166873A (en) | A kind of novel dehydration device for carbonated rare earth | |
| CN212512214U (en) | Refractory material drying equipment | |
| CN215842120U (en) | Online deironing device of spheroidizing furnace sack dust removal | |
| CN209810329U (en) | High-speed ball mill is used in printing and dyeing auxiliary agent production and processing | |
| CN115235256A (en) | Industrial electric furnace | |
| CN220202108U (en) | Heating device for be used for carbon fiber product production | |
| CN214582363U (en) | Electromagnetic superconducting drying furnace | |
| CN213984367U (en) | Novel quartz sand drying device | |
| CN214701567U (en) | Refractory material drying equipment | |
| CN218846906U (en) | Energy-saving aging heat treatment furnace | |
| CN213020965U (en) | Soft magnetic ferrite powder sintering device | |
| CN219849334U (en) | Batching equipment convenient for dust removal | |
| CN215612177U (en) | Environment-friendly cement ball mill |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |