CN110802235A - Method for producing aluminum powder of fireworks - Google Patents
Method for producing aluminum powder of fireworks Download PDFInfo
- Publication number
- CN110802235A CN110802235A CN201911119414.5A CN201911119414A CN110802235A CN 110802235 A CN110802235 A CN 110802235A CN 201911119414 A CN201911119414 A CN 201911119414A CN 110802235 A CN110802235 A CN 110802235A
- Authority
- CN
- China
- Prior art keywords
- powder
- aluminum
- atomizing
- aluminum powder
- raw materials
- 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.)
- Withdrawn
Links
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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
-
- 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
- B22F2202/00—Treatment under specific physical conditions
- B22F2202/01—Use of vibrations
Abstract
The invention provides a method for producing aluminum powder of fireworks, which comprises the following steps: firstly, melting raw materials, placing the aluminum powder raw materials in a vacuum smelting furnace, and heating the aluminum powder raw materials by adopting a medium-frequency induction heater to fully melt the aluminum powder raw materials to form molten aluminum; secondly, atomizing to prepare powder, namely enabling the molten aluminum to flow into an atomizing chamber through a guide pipe, atomizing by an ultrasonic atomizer in the atomizing chamber to fully atomize the aluminum, and cooling the atomized aluminum to form powder through a cooling system; and thirdly, collecting the powder through a powder collecting system, and subpackaging and packaging the collected powder. This scheme is effectual has improved the atomizing of aluminium liquation and has imitated, has improved the degree of consistency of atomizing back powder, has solved the too big problem of powder, the effectual production efficiency who improves fireworks aluminite powder simultaneously.
Description
Technical Field
The invention relates to a firework aluminum powder production technology, in particular to a method for producing firework aluminum powder.
Background
The fireworks powder with various white tail effects in the existing combined fireworks product is prepared by taking potassium perchlorate as a main oxidant, and the potassium perchlorate is used as the main oxidant, the fireworks powder has the defect of high cost, has the combustion characteristic of higher temperature during combustion, does not generate the snowflake effect of irregular shaking of aluminum slag, and does not have a white snowflake tail combined firework. The specific gravity of the aluminum powder in the fireworks is very important.
Patent No. CN104227007B discloses a method for preparing aluminum powder and aluminum alloy by water atomization, which comprises the following steps: melting aluminum ingot or aluminum alloy by a diversion crucible to keep the temperature of the melt at 700-1100 ℃ and preserving the heat for 30-60 min. And simultaneously heating the diversion crucible. And pouring the molten aluminum alloy liquid into the diversion crucible, and enabling the molten aluminum alloy liquid to continuously flow out along a diversion pipe at the bottom of the diversion crucible. And opening the high-pressure water pump, controlling the pressure of the high-pressure water flow to be 2-16MPa and the water temperature to be 10-40 ℃, spraying the high-pressure water flow with the pH value of 4.0-5.0 added with the inhibitor along a nozzle at the top of the atomizing chamber, and atomizing the aluminum liquid to obtain aluminum and aluminum alloy powder. The invention can safely produce the aluminum powder by water atomization. Compared with the preparation of aluminum powder by gas atomization, the aluminum powder has the advantages of finer granularity, large specific surface area, high activity and higher water atomization cooling speed, greatly improves the supersaturated solid solubility of alloy elements, and produces the aluminum alloy which is difficult to prepare by a casting method. And the cost for preparing the aluminum powder by water atomization is lower than that of gas atomization, and the method is suitable for large-scale production. However, the method has poor atomization effect in the production process, the atomized powder is not uniform, and the powder particles are too large.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the method for producing the firework aluminum powder, which has the advantages of outstanding atomization effect, uniform powder particles, high production efficiency and convenience in batch production.
The technical scheme of the invention is as follows: a method for producing aluminum powder for fireworks comprises the following steps:
firstly, melting raw materials, placing the aluminum powder raw materials in a vacuum smelting furnace, and heating the aluminum powder raw materials by adopting a medium-frequency induction heater to fully melt the aluminum powder raw materials to form molten aluminum;
secondly, atomizing to prepare powder, namely enabling the molten aluminum to flow into an atomizing chamber through a guide pipe, atomizing by an ultrasonic atomizer in the atomizing chamber to fully atomize the aluminum, and cooling the atomized aluminum to form powder through a cooling system;
and thirdly, collecting the powder through a powder collecting system, and subpackaging and packaging the collected powder.
The advantage of this scheme lies in, adopts the ultrasonic wave to atomize to the aluminium melt, the effectual atomizing effect and the efficiency that has improved, preferably, removes dust and removes impurity treatment, the promotion of the aluminium powder quality of being convenient for to aluminium powder raw and other materials before the processing.
Further, the powder collecting system comprises a cyclone collector and a pulse bag-type dust collector, the cyclone collector is connected with the lower end of the atomizing chamber through a pipeline, the top of the cyclone collector is connected with the pulse bag-type dust collector through a pipeline, and the pulse bag-type dust collector is connected with the induced draft fan through an air pipe.
Further, the heating temperature of the medium frequency induction heater in the first step is 600-.
Preferably, the heating temperature of the medium frequency induction heater is 600-1500 ℃.
More preferably, the heating temperature of the medium frequency induction heater is 1000 ℃. The full melting of aluminium of being convenient for can prevent simultaneously that the in-process temperature that falls in the honeycomb duct from dropping too fast and influencing the effect of atomizing.
Further, the flow speed of the molten aluminum in the guide pipe is 5-50 g/s.
Preferably, the flow speed of the aluminum melt in the guide pipe is 15-40 g/s.
More preferably, the flow rate of the aluminum melt in the guide pipe is 20 g/s. The processing efficiency of the aluminum melt is improved conveniently, but the processing quality is not influenced.
Further, the vibration frequency of the ultrasonic wave is more than 20000 Hz.
Preferably, the vibration frequency of the ultrasonic wave is 20-30 KHz.
More preferably, the vibration frequency of the ultrasonic wave is 25 KHz. The atomization effect of the aluminum melt is convenient to improve, the uniformity of aluminum powder particles after atomization can be effectively guaranteed, and the production quality is effectively improved.
Furthermore, cooling system locates the atomizer chamber lower extreme, and cooling system is water cooling plant.
Further, the aluminum powder raw material is subjected to removal of impurities before the first step. The quality of the atomized aluminum powder raw material is improved, and the raw material and the pollution in the processing process are prevented.
The invention has the following characteristics:
this scheme is effectual has improved the atomizing of aluminium liquation and has imitated, has improved the degree of consistency of atomizing back powder, has solved the too big problem of powder, the effectual production efficiency who improves fireworks aluminite powder simultaneously.
The detailed structure of the present invention will be further described with reference to the accompanying drawings and the detailed description.
Drawings
FIG. 1 is a schematic view of the processing flow of the invention.
Detailed Description
As shown in the attached drawings: a method for producing aluminum powder for fireworks comprises the following steps:
firstly, melting raw materials, placing the aluminum powder raw materials in a vacuum smelting furnace, and heating the aluminum powder raw materials by adopting a medium-frequency induction heater to fully melt the aluminum powder raw materials to form molten aluminum;
secondly, atomizing to prepare powder, namely enabling the molten aluminum to flow into an atomizing chamber through a guide pipe, atomizing by an ultrasonic atomizer in the atomizing chamber to fully atomize the aluminum, and cooling the atomized aluminum to form powder through a cooling system;
and thirdly, collecting the powder through a powder collecting system, and subpackaging and packaging the collected powder.
Adopt the ultrasonic wave to atomize to the aluminium liquation, the effectual atomizing effect and the efficiency that has improved, preferably, remove dust and remove impurity treatment to aluminium powder raw and other materials before the processing, the promotion of the aluminium powder quality of being convenient for.
The powder collecting system comprises a cyclone collector and a pulse bag-type dust collector, the cyclone collector is connected with the lower end of the atomizing chamber through a pipeline, the top of the cyclone collector is connected with the pulse bag-type dust collector through a pipeline, and the pulse bag-type dust collector is connected with an induced draft fan through an air pipe.
Preferably, the cyclone collector lower extreme is equipped with first collector, and pulse bag dust collector lower extreme is equipped with the second collector, is equipped with filter screen in the first collector, can sieve the powder at the in-process of collecting the powder, further improvement the degree of consistency of the granule of powder, the improvement of the fireworks aluminium powder quality of being convenient for, and then improve the visual effect that fireworks were touched off.
The heating temperature of the medium frequency induction heater in the first step is 600-2000 ℃. Preferably, the heating temperature of the medium frequency induction heater is 800, 1000 and 1500 ℃. The full melting of aluminium of being convenient for can prevent simultaneously that the in-process temperature that falls in the honeycomb duct from dropping too fast and influencing the effect of atomizing.
The flow speed of the molten aluminum in the guide pipe is 5-50 g/s. Preferably, the flow rate of the aluminum melt in the guide pipe is 15, 20 and 40 g/s. The processing efficiency of the aluminum melt is improved conveniently, but the processing quality is not influenced.
The vibration frequency of the ultrasonic wave is more than 20000 Hz. Preferably, the vibration frequency of the ultrasonic wave is 20, 25 and 30 KHz. The atomization effect of the aluminum melt is convenient to improve, the uniformity of aluminum powder particles after atomization can be effectively guaranteed, and the production quality is effectively improved.
The cooling system is arranged at the lower end of the atomizing chamber and is a water cooling device, a plurality of cooling water spray heads are arranged in the atomizing chamber and are connected with an external high-pressure water pipe, the maximum bearing pressure of the water pipe is 10MPa, the water pressure is 3MPa, the spray heads are perpendicular to the inside of the atomizing chamber during use, aluminum powder is convenient to fully contact with the cooling water, and the cooling effect is convenient to improve.
Preferably, the aluminum powder raw material is subjected to impurity removal prior to the first step. The quality of the atomized aluminum powder raw material is improved, and the raw material and the pollution in the processing process are prevented.
The preferred embodiments of the present invention have been described in detail above, but it is apparent that the present invention is not limited to the above embodiments. Within the scope of the technical idea of the invention, many equivalent modifications can be made to the technical solution of the invention, and these equivalent modifications are all within the protection scope of the invention. In addition, it should be noted that the respective technical features described in the above-described embodiments may be separately and independently combined as long as they are within the technical concept of the present invention.
Claims (7)
1. The method for producing the aluminum powder for the fireworks is characterized by comprising the following steps of:
firstly, melting raw materials, placing the aluminum powder raw materials in a vacuum smelting furnace, and heating the aluminum powder raw materials by adopting a medium-frequency induction heater to fully melt the aluminum powder raw materials to form molten aluminum;
secondly, atomizing to prepare powder, namely enabling the molten aluminum to flow into an atomizing chamber through a guide pipe, atomizing by an ultrasonic atomizer in the atomizing chamber to fully atomize the aluminum, and cooling the atomized aluminum to form powder through a cooling system;
and thirdly, collecting the powder through a powder collecting system, and subpackaging and packaging the collected powder.
2. The method for producing aluminum powder for fireworks according to claim 1, characterized in that: the powder collecting system comprises a cyclone collector and a pulse bag-type dust collector, the cyclone collector is connected with the lower end of the atomizing chamber through a pipeline, the top of the cyclone collector is connected with the pulse bag-type dust collector through a pipeline, and the pulse bag-type dust collector is connected with a draught fan through an air pipe.
3. The method for producing aluminum powder for fireworks according to claim 1, characterized in that: the heating temperature of the medium frequency induction heater in the first step is 600-2000 ℃.
4. The method for producing aluminum powder for fireworks according to claim 1, characterized in that: the flow speed of the molten aluminum in the guide pipe is 5-50 g/s.
5. The method for producing aluminum powder for fireworks according to claim 1, characterized in that: the vibration frequency of the ultrasonic waves is more than 20000 Hz.
6. The method for producing aluminum powder for fireworks according to claim 1, characterized in that: the cooling system is arranged at the lower end of the atomizing chamber and is a water cooling device.
7. The method for producing aluminum powder for fireworks according to any one of claims 1-6, characterized in that: the impurities are removed from the aluminum powder raw material before the first step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911119414.5A CN110802235A (en) | 2019-11-15 | 2019-11-15 | Method for producing aluminum powder of fireworks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911119414.5A CN110802235A (en) | 2019-11-15 | 2019-11-15 | Method for producing aluminum powder of fireworks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110802235A true CN110802235A (en) | 2020-02-18 |
Family
ID=69490029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911119414.5A Withdrawn CN110802235A (en) | 2019-11-15 | 2019-11-15 | Method for producing aluminum powder of fireworks |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110802235A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4671906A (en) * | 1985-03-26 | 1987-06-09 | Agency Of Industrial Science & Technology | Method and apparatus for production of minute metal powder |
| US5045110A (en) * | 1989-05-19 | 1991-09-03 | Shell Research Limited | Aluminium-strontium master alloy |
| CN102689015A (en) * | 2012-06-21 | 2012-09-26 | 北京有色金属研究总院 | Metal powder preparation device and method therefor |
| CN105345018A (en) * | 2015-10-13 | 2016-02-24 | 刘冠华 | Preparation method for micron-size activated aluminum powder and aluminum powder |
| CN109317687A (en) * | 2018-10-30 | 2019-02-12 | 湖南天际智慧材料科技有限公司 | A kind of ultrasonic activation spray chamber and the powder by atomization equipment being made from it |
| CN109371298A (en) * | 2018-12-11 | 2019-02-22 | 湖南金昊新材料科技股份有限公司 | A kind of aluminium-based alloyed powder ultimogeniture production. art |
-
2019
- 2019-11-15 CN CN201911119414.5A patent/CN110802235A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4671906A (en) * | 1985-03-26 | 1987-06-09 | Agency Of Industrial Science & Technology | Method and apparatus for production of minute metal powder |
| US5045110A (en) * | 1989-05-19 | 1991-09-03 | Shell Research Limited | Aluminium-strontium master alloy |
| CN102689015A (en) * | 2012-06-21 | 2012-09-26 | 北京有色金属研究总院 | Metal powder preparation device and method therefor |
| CN105345018A (en) * | 2015-10-13 | 2016-02-24 | 刘冠华 | Preparation method for micron-size activated aluminum powder and aluminum powder |
| CN109317687A (en) * | 2018-10-30 | 2019-02-12 | 湖南天际智慧材料科技有限公司 | A kind of ultrasonic activation spray chamber and the powder by atomization equipment being made from it |
| CN109371298A (en) * | 2018-12-11 | 2019-02-22 | 湖南金昊新材料科技股份有限公司 | A kind of aluminium-based alloyed powder ultimogeniture production. art |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108161019B (en) | Powder making method of induction heating and radio frequency plasma combined atomization powder making system | |
| CN106862578B (en) | A kind of device and method that combination atomization type prepares spherical metal alloy powder | |
| CN100475390C (en) | Method and apparatus for preparing rapid-solidified hydrogen-storage alloy powder material | |
| CN107377983A (en) | A kind of atomising device for preparing alloyed metal powder | |
| CN106112002B (en) | A kind of apparatus and method for using circulation air to prepare metallic particles for medium and reclaim heat | |
| WO2021139553A1 (en) | Spherical amorphous alloy powder preparation apparatus and method | |
| CN109317687A (en) | A kind of ultrasonic activation spray chamber and the powder by atomization equipment being made from it | |
| CN107096925A (en) | A kind of new plasma atomization prepares ball-type powder model system | |
| CN104985186B (en) | A kind of gas atomizing nozzle for being used to prepare metal dust | |
| CN103223492A (en) | High-activity ultrafine aluminum powder preparing process and device | |
| CN110919014A (en) | Preparation method of titanium alloy powder for 3D printing | |
| US2638626A (en) | Apparatus for the production of metal powder | |
| CN209792610U (en) | Ultrasonic vibration atomizing chamber and atomizing powder-making equipment comprising same | |
| CN114192790A (en) | Device and method for preparing spherical titanium and titanium alloy powder | |
| CN102335743B (en) | Ultrasonic spray-forming method | |
| CN109304472A (en) | It is hydraulic atomized to produce noble metal powder equipment | |
| CN104109759B (en) | High titanium slag wet processing system and processing method | |
| CN110834090A (en) | Metal powder shaping, refining and purifying device and method | |
| CN110802235A (en) | Method for producing aluminum powder of fireworks | |
| CN107008911A (en) | A kind of diamond synthesis catalytic powder preparation facilities | |
| CN207119804U (en) | A kind of atomising device for preparing alloyed metal powder | |
| CN211170778U (en) | Cooling device for metal annealing | |
| CN205732986U (en) | Atomized metal pow der produces equipment | |
| CN208322127U (en) | A kind of high energy and high speed plasma prepares the device of globular metallic powder | |
| CN113333765B (en) | Spray forming and overspray powder collecting method and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200218 |
|
| WW01 | Invention patent application withdrawn after publication |