CN103223492A - High-activity ultrafine aluminum powder preparing process and device - Google Patents
High-activity ultrafine aluminum powder preparing process and device Download PDFInfo
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- CN103223492A CN103223492A CN2013101199338A CN201310119933A CN103223492A CN 103223492 A CN103223492 A CN 103223492A CN 2013101199338 A CN2013101199338 A CN 2013101199338A CN 201310119933 A CN201310119933 A CN 201310119933A CN 103223492 A CN103223492 A CN 103223492A
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Abstract
The invention relates to a high-activity ultrafine aluminum powder preparing process and a high-activity ultrafine aluminum powder preparing device. The high-activity ultrafine aluminum powder preparing process comprises melting, atomizing and classifying steps. The high-activity ultrafine aluminum powder preparing device relates to a special aluminum melting furnace and a gas atomizing nozzle, wherein the aluminum melting furnace comprises an aluminum melting furnace body with a circular furnace bottom, a burner nozzle installed in the aluminum melting furnace body, and a furnace door installed on the aluminum melting furnace body; a vertical furnace body is installed at the upper end of the aluminum melting furnace body; a feed port is formed in the upper end surface of the vertical furnace body; the high-activity ultrafine aluminum powder preparing device is characterized in that an aluminum liquid heat-preserving area is arranged on one side inside the aluminum melting furnace body with the circular furnace bottom; one end of an aluminum liquid suction pipe is communicated with the aluminum liquid heat-preserving area; the other end of the aluminum liquid suction pipe is connected with aluminum powder producing equipment; a flue gas recycling hood is installed at the upper end of the furnace door; an air preheater is communicated with the flue gas recycling hood and the vertical furnace body; and an air inlet of the burner nozzle is connected with the air preheater. The high-activity ultrafine aluminum powder preparing process and the high-activity ultrafine aluminum powder preparing device have the characteristics of simple process, low production cost, recyclability of a mixed gas, reasonable structures of the aluminum melting furnace and the gas atomizing nozzle, high production efficiency and the like.
Description
Technical field
The present invention relates to a kind of preparation technology and device of aluminium powder, particularly a kind of preparation technology of ultrafine high activity aluminium powder and device.
Background technology
The high activity superfine aluminium power is widely used in high-grade automobile, household electrical appliances and ornament materials and leads slurry, metallurgical with aspects such as reducing agent and rocket fuel propellants with metallic paint, use for electronic products, removes aspects such as vanadium and thin-film solar cells coating in recent years again in high-purity titanium sponge finishing and has obtained important application.
The granularity of aluminium powder and activity are the important parameters of reduction in the meticulous metallurgical process of decision, removal of impurity effect.Particle mean size is more little, high more the carrying out that helps reduction reaction more of surface-active, and the effect of removal of impurities is good more, finally can obtain highly purified reactive metal.But because aluminium and oxygen have very strong affinity, along with the granularity of aluminium powder attenuates, oxidation very easily takes place in the aluminium powder surface, form stable oxide, thereby reduce its activity, and the superfine active aluminium powder is easy to take place spontaneous combustion or blast, and this also is one of main difficult point in the present superfine active production of aluminum powder process.
The method for preparing at present aluminium powder mainly contains mechanical milling method, gas shock comminuting method, water atomization, air atomizing method, nitrogen atomization method etc.Mechanical lapping and water atomization can only prepare average grain diameter usually between 40～100 μ m, and powder in irregular shape; Though air-flow is pulverized and the air atomizing method also can the thinner powder of prepared sizes, owing to very easily oxygen uptake of aluminium powder, above-mentioned preparation method can have a strong impact on its surface-active.
Summary of the invention
The objective of the invention is to solve the defective that prior art exists, the preparation technology and the special-purpose molten aluminium stove and the atomizer of a kind of aluminium powder average grain diameter and the ultrafine high activity aluminium powder that distribution is little, surface-active is high is provided.
Technical scheme of the present invention is: a kind of preparation technology of ultrafine high activity aluminium powder, and this technology may further comprise the steps:
1) fusing: after aluminium ingot melts in molten aluminium stove, be stored in the heat preservation zone in the molten aluminium stove, the temperature of aluminum liquid of heat preservation zone remains between 760 ℃～840 ℃;
2) atomizing: will melt that the aluminium liquid of heat preservation zone is transported in the spray chamber by aluminium liquid carrier pipe in the aluminium stove, aluminium liquid forms the micron order aluminium powder by being installed in the granulation that atomizes of gas atomizing nozzle in the spray chamber; Wherein the gas of gas atomizing nozzle is the mist based on inert gas;
3) classification: the aluminium powder in the spray chamber delivers into clasfficiator by strength and carries out the classification processing, gets the aluminium powder finished product of different-grain diameter;
The aluminium liquid injection direction of above-mentioned gas atomizer is a horizontal-jet; The mist that gas atomizing nozzle is used is that volume ratio is 99-99.999% inert gas and 1-0.001% oxygen; The pressure of mist is between 6～12MPa, and flow velocity is 4～6M/S.
Strength in the above-mentioned classification step carries the carrier pipe that is connected with clasfficiator by spray chamber to form, and it is the inert gas of atomizing use and the mist of oxygen that strength is carried the gas of usefulness;
The air outlet of clasfficiator is connected with high pressure positive blower, and the air outlet of high pressure positive blower links to each other with spray chamber with the gas compressor air inlet by pipeline, and the gas outlet of gas compressor is connected with gas atomizing nozzle by pipeline;
Inert gas in the above-mentioned mist is a nitrogen; Nitrogen in the mist and oxygen are technical purity;
The two-stage classification that clasfficiator adopts cyclone dust collectors or sack cleaner or cyclone dust collectors to connect with sack cleaner;
The preferred cyclone type multitube pottery of cyclone dust collectors deduster, sack cleaner preferred pulse blowback sack cleaner.
The average grain diameter of above-mentioned aluminium powder finished product is less than 10 μ m, surfaces A l
2O
3The thickness of film is 0.8～1.5nm, and the water surface covers dispersiveness＞10000cm2/g, and activated aluminum is greater than 99%.
A kind of molten aluminium stove of producing the ultrafine high activity aluminium powder, comprise that the molten aluminium body of heater at the bottom of the round kiln melts the burner nozzle in the aluminium body of heater and is installed in the fire door that melts on the aluminium body of heater with being installed in, in molten aluminium body of heater upper end vertical body of heater is installed, in vertical body of heater upper surface charge door is installed, it is characterized in that the interior side of molten aluminium body of heater at the bottom of the round kiln is provided with aluminium liquid heat preservation zone, in aluminium liquid heat preservation zone, the aluminium liquid straw is installed, flue gas is installed in the upper end of fire door reclaims cover, air preheater and flue gas reclaim cover, vertical body of heater is connected, and the air intlet of burner nozzle links to each other with air preheater.
The said burner nozzle is two, and two burner nozzles are installed in the top of the molten aluminium body of heater at the bottom of the round kiln, and the axis angle of two burner nozzles is 70-100 degree.
The outside of the molten aluminium body of heater at the bottom of above-mentioned round kiln is equipped with the air channel, the air channel is formed by being installed in the upper and lower air channel of melting the outside upper and lower end of aluminium body of heater and being installed in the outside furnace shell interlayer air channel that is connected with upper and lower air channel of molten aluminium body of heater, the exhaust outlet of blower fan is connected with lower air duct, and the exhaust outlet of upper end, air channel is connected with air preheater by pipeline; On the connecting line between above-mentioned flue gas recovery cover and the air preheater, valve is installed.
On above-mentioned charge door, match the charge door seal cover is installed, the charge door seal cover links to each other with the upper surface of vertical body of heater by hinge, on the vertical body of heater upper surface of hinge one side, be fixed with column, the column top is equipped with pulley, steel wire rope one end links to each other with the charge door seal cover, and the steel wire rope other end links to each other with hoist engine.
A kind of atomizer of producing the ultrafine high activity aluminium powder, it is characterized in that atomizer is made up of nozzle and annular water conservancy diversion cover, annular water conservancy diversion cover is sleeved on the nozzle cylindrical, the interior circle and the nozzle cylindrical of annular water conservancy diversion cover form the ring jet chamber concentric with nozzle, and the ring jet chamber is connected with air shooter.
The inner headed face of the periphery of said nozzle and annular water conservancy diversion cover is the taper seat that matches.
The present invention has following characteristics:
1. technology is simple, production cost is low.Owing to adopt the inert gas circulatory system of special-purpose molten aluminium stove, gas atomizing nozzle and sealing, technological process is short on the one hand, and aluminium powder average grain diameter and distribution are little, the surface-active height, inert gas recycles on the other hand, can effectively reduce production costs, little to ambient influnence.
2. in the molten aluminium body of heater of special use, be provided with aluminium liquid fusion zone and heat preservation zone, the axis angle of two burner nozzles in aluminium liquid fusion zone is designed to 70-100 degree, the flame of such two burner nozzles forms the furnace gas field of a circle in stove, Temperature Distribution and atmosphere in the stove are all compared evenly, furnace atmosphere circulation in the stove is strong simultaneously, furnace temperature is even, prevented that the furnace temperature hot-spot from forming the generation of burn-off phenomenon, prolonged on the one hand stove service life, prolonged the holdup time of heat in stove on the other hand, increase the heat exchange chance, reached purpose of energy saving.Utilize the technical program can make the minimum scaling loss of aluminium ingot below 0.8 ﹪.
3. the charge door seal cover of vertical body of heater and upset is installed in molten aluminium body of heater upper end, can conveniently feed in raw material on the one hand by the charge door on the vertical body of heater, aluminium ingot process preheating in vertical body of heater simultaneously, the moisture and the abundant fume afterheat that absorbs in the vertical body of heater of the absorption of aluminium ingot surface have been removed, can reduce the oxygen content in the aluminium liquid like this, can play the effect of stabilised bath liquid stream again, thereby save the energy greatly.
4. on molten aluminium stove, adopt air preheater and furnace shell interlayer air channel, its objective is in protection stove outer covering and increase body of heater intensity, can effectively reduce the temperature of shell and workman's operating environment temperature.Outside at molten aluminium body of heater is equipped with the air channel, blower fan is sent into cold wind from lower air duct, enter air preheater by upper air duct, air after the preheating enters burner again and participates in burning like this, improve efficiency of combustion, combustion intensity, flame temperature and speed, can drop to below 150 ℃ through the exhaust gas temperature after the above-mentioned heat absorption simultaneously, improve the thermal efficiency greatly.
Description of drawings
Accompanying drawing 1 is a process chart of the present invention;
Accompanying drawing 2 is the stereoscan photograph of aluminium powder of the present invention;
Accompanying drawing 3 is the structural representation of the molten aluminium stove of the present invention;
Accompanying drawing 4 is the vertical view of accompanying drawing 1 of the present invention;
Accompanying drawing 5 is the A-A cutaway view of accompanying drawing 1 of the present invention;
Accompanying drawing 6 is the B-B cutaway view of accompanying drawing 1 of the present invention;
Accompanying drawing 7 is the structural representation of atomizer of the present invention.
The specific embodiment
Embodiment 1:
As shown in Figure 1, 2, the preparation technology of ultrafine high activity aluminium powder is as follows:
1) fusing: aluminium ingot is melted in molten aluminium stove, and the aluminium liquid after the fusing is stored in the interior heat preservation zone of molten aluminium stove, and the temperature of aluminum liquid of heat preservation zone remains on about 760 ℃;
2) atomizing: the aluminium liquid that will melt heat preservation zone in the aluminium stove is transported in the spray chamber by aluminium liquid carrier pipe, sprays the granulation that atomizes by the gas atomizing nozzle that is installed in the spray chamber, and the aluminium liquid injection direction of gas atomizing nozzle is a horizontal-jet.
By mist the formed pressure of aluminium liquid on aluminium liquid liquid level pressure and gas atomizing nozzle in the heat preservation zone is about 6MPa, rate of flow of fluid is under the effect of 4M/S, spout place at gas atomizing nozzle forms negative pressure, aluminium liquid is horizontal-jet by gas atomizing nozzle and goes out, form vaporific aluminium and drip, vaporific aluminium drops in the process of landing in the spray chamber and is frozen into the micron order aluminium powder rapidly.Owing to contain the oxygen of trace in the atmosphere in the spray chamber, drip in the cooling procedure at aluminium like this, can dripping surface passivation at aluminium, to form thickness be ultra-thin Al about 1.5nm
2O
3Film had so both guaranteed the activity of aluminium powder, had guaranteed the stability of aluminium powder again.
Inert gas in the mist can adopt not the inert gas with reactive aluminum, considers to adopt nitrogen from the angle that reduces production costs, and mist is by providing by gas compressor;
3) classification: the micron order aluminium powder in the spray chamber delivers into clasfficiator by strength and carries out the classification processing, exports to such an extent that average grain diameter is about 10 μ m by clasfficiator, and the water surface covers dispersiveness＞10000cm
2/ g, activated aluminum is greater than 99% aluminium powder finished product.Particle diameter can be used for other purposes after collecting greater than the aluminium powder more than the 10 μ m.
Wherein in the above-mentioned steps 2, the volume ratio of the mist that nitrogen and oxygen form in the mist is 99:1.Nitrogen and oxygen adopt technical grade purity.
Clasfficiator adopts cyclone type multitube pottery deduster in the step 3.
Air outlet at cyclone type multitube pottery deduster is connected with high pressure positive blower, the air outlet of high pressure positive blower links to each other with spray chamber with the air inlet of gas compressor by pipeline, the gas outlet of gas compressor is connected with gas atomizing nozzle by pipeline, the power that the gas of the mist after being used to like this atomize and the air outlet of high pressure positive blower is just carried as strength.After mist after the classification compresses by gas compressor, continue power gas as atomizing usefulness gas and strength conveying.
Be the mixture pressure that guarantees to send and the stability of flow, in high pressure positive blower air outlet and gas compressor air inlet and pipeline that spray chamber links to each other, the low-pressure balance jar be installed by the high pressure positive blower air outlet.
The loss of mist in atomization process can be carried out replenishing of oxygen by the air inlet on the gas compressor.
Embodiment 2-5:
On the basis of embodiment 1, the ratio of nitrogen and oxygen in the temperature of aluminum liquid of change heat preservation zone, pressure, flow velocity and the mist of mist gets the aluminium powder finished product and sees the following form:
| Embodiment | Temperature of aluminum liquid | Pressure | Flow velocity | Nitrogen and oxygen ratio | The aluminium |
| 2 | 780 | 8 | 4 | 99.9%：0.1% | 6 |
| 3 | 800 | 9 | 5 | 99.9%：0.1% | 4 |
| 4 | 820 | 10 | 5 | 99.99%：0.01% | 3 |
| 5 | 840 | 12 | 6 | 99.999%：0.001% | 1 |
In the above-described embodiments, the water surface of aluminium powder finished product covers dispersiveness＞10000cm
2/ g, activated aluminum is greater than 99%, and the aluminium powder particle diameter is an average grain diameter.
In the step 3 of embodiment 2, clasfficiator adopts the pulse backblowing sack cleaner.
In the step 3 of embodiment 3-5, clasfficiator adopts the two-stage classification of multitube pottery deduster and the series connection of pulse backblowing sack cleaner.
The structure of the molten aluminium stove of production ultrafine high activity aluminium powder is shown in Fig. 3,4,5,6, molten aluminium body of heater 13 upper ends at the bottom of round kiln are equipped with vertical body of heater 9, top in molten aluminium body of heater is equipped with two burner nozzles 18, the axis angle of two burner nozzles is 70-100 degree, and optimal selection is 90 degree.In vertical body of heater upper surface charge door 5 is installed, on charge door, match charge door seal cover 19 is installed, the charge door seal cover links to each other with the upper surface of vertical body of heater by hinge 8, on the vertical body of heater upper surface in hinge left side, be fixed with column 7, the column top is equipped with pulley, the right-hand member of steel wire rope 6 links to each other with the charge door seal cover, and the left end of steel wire rope links to each other with hoist engine.
Left side in the molten aluminium body of heater at the bottom of the round kiln is provided with aluminium liquid heat preservation zone 14, is equipped with to be used for the aluminium liquid carrier pipe 12 that the aluminium liquid in the aluminium liquid heat preservation zone is outwards loose on aluminium liquid heat preservation zone.Fire door 1 upper end on the molten aluminium body of heater at the bottom of the round kiln is equipped with flue gas and reclaims cover 3, and air preheater 11 reclaims cover with flue gas, vertical body of heater 9 is connected, and the gas outlet 10 of air preheater links to each other with smoke exhaust pipe.The air intlet 2 of burner nozzle 18 links to each other with air preheater.
The outside of the molten aluminium body of heater at the bottom of above-mentioned round kiln is equipped with air channel 17, the air channel is formed by being installed in the upper and lower air channel of melting the outside upper and lower end of aluminium body of heater and being installed in the outside furnace shell interlayer air channel that is connected with upper and lower air channel of molten aluminium body of heater, the air outlet of blower fan 16 is connected with lower air duct, and the air outlet of upper end, air channel is connected with air preheater 11 by pipeline.
The slag that produces in the fusion process in the molten aluminium body of heater is skimmed by fire door, owing to adopt at the bottom of the round kiln, the furnace chamber of molten like this aluminium stove is cylindrical, the process of skimming does not have the dead angle like this, in the fire door upper end flue gas is installed simultaneously and reclaims cover, can effectively improve operating personnel's working environment.For guaranteeing the pre-heat effect of air preheater, on the connecting line between flue gas recovery cover and the air preheater, valve 4 is installed, control the switching between flue gas recovery cover and the air preheater.Bottom at molten aluminium body of heater is equipped with leakage fluid dram 15.
During use, start hoist engine, by steel wire rope the charge door seal cover is opened, the aluminium ingot that needs are melted adds in the vertical body of heater by charge door, by the water evaporates of the high-temperature flue gas in the vertical body of heater with the absorption of aluminium ingot surface, simultaneously material is carried out preheating.Aluminium liquid after the fusing is stored in the molten aluminium body of heater and aluminium liquid heat preservation zone at the bottom of the round kiln, sends in the aluminium powder production equipment by aluminium liquid carrier pipe.
As shown in Figure 7, produce the gas atomizing nozzle of ultrafine high activity aluminium powder, this atomizer 21 is to be fixed in the spray chamber 20, atomizer is made up of nozzle 22 and annular water conservancy diversion cover 24, annular water conservancy diversion cover is sleeved on the nozzle cylindrical, the interior circle and the nozzle cylindrical of annular water conservancy diversion cover form the ring jet chamber 23 concentric with nozzle, and the ring jet chamber is connected with air shooter 25.The aluminium of usefulness drips in order to guarantee forming all by the aluminium liquid that nozzle 22 sprays, the inner headed face of the periphery of nozzle and annular water conservancy diversion cover is the taper seat that matches, gases at high pressure by the ejection of ring jet chamber will form a negative pressuren zone in the exit of nozzle like this, aluminium liquid is sprayed by nozzle under the effect of negative pressure by aluminium liquid straw 12, aluminium liquid forms vaporific particulate under the effect of gases at high pressure, by adjusting the pressure of gases at high pressure, flow velocity and temperature of aluminum liquid etc., just can control the particle diameter that vaporific aluminium drips, simultaneously aluminium drip with mist in oxygen reaction, drip the surface at aluminium and form ultra-thin Al rapidly
2O
3Surface passivated membrane.The aluminium powder that falls to the spray chamber bottom is transported to by carrier pipe and carries out classification in the clasfficiator.
Claims (10)
1. the preparation technology of a ultrafine high activity aluminium powder, this technology may further comprise the steps:
1) fusing: after aluminium ingot melts in molten aluminium stove, be stored in the heat preservation zone in the molten aluminium stove, the temperature of aluminum liquid of heat preservation zone remains between 760 ℃～840 ℃;
2) atomizing: will melt that the aluminium liquid of heat preservation zone is transported in the spray chamber by aluminium liquid carrier pipe in the aluminium stove, aluminium liquid forms the micron order aluminium powder by being installed in the granulation that atomizes of gas atomizing nozzle in the spray chamber; Wherein the gas of gas atomizing nozzle is the mist based on inert gas;
3) classification: the aluminium powder in the spray chamber delivers into clasfficiator by strength and carries out the classification processing, gets the aluminium powder finished product of different-grain diameter.
2. the preparation technology of ultrafine high activity aluminium powder according to claim 1 is characterized in that the aluminium liquid injection direction of above-mentioned gas atomizer is a horizontal-jet; The mist that gas atomizing nozzle is used is that volume ratio is 99-99.999% inert gas and 1-0.001% oxygen; The pressure of mist is between 6～12MPa, and flow velocity is 4～6M/S.
3. the preparation technology of ultrafine high activity aluminium powder according to claim 2, it is characterized in that the strength in the above-mentioned classification step carries the carrier pipe that is connected with clasfficiator by spray chamber to form, it is the atomize inert gas of use and the mist of oxygen that strength is carried the gas of usefulness;
The air outlet of clasfficiator is connected with high pressure positive blower, and the air outlet of high pressure positive blower links to each other with spray chamber with the gas compressor air inlet by pipeline, and the gas outlet of gas compressor is connected with gas atomizing nozzle by pipeline;
Inert gas in the above-mentioned mist is a nitrogen; Nitrogen in the mist and oxygen are technical purity;
The two-stage classification that clasfficiator adopts cyclone dust collectors or sack cleaner or cyclone dust collectors to connect with sack cleaner;
The preferred cyclone type multitube pottery of cyclone dust collectors deduster, sack cleaner preferred pulse blowback sack cleaner.
4. the preparation technology of ultrafine high activity aluminium powder according to claim 3, the average grain diameter that it is characterized in that above-mentioned aluminium powder finished product is less than 10 μ m, surfaces A l
2O
3The thickness of film is 0.8～1.5nm, and the water surface covers dispersiveness＞10000cm2/g, and activated aluminum is greater than 99%.
5. molten aluminium stove of producing the ultrafine high activity aluminium powder, comprise that the molten aluminium body of heater at the bottom of the round kiln melts the burner nozzle in the aluminium body of heater and is installed in the fire door that melts on the aluminium body of heater with being installed in, in molten aluminium body of heater upper end vertical body of heater is installed, in vertical body of heater upper surface charge door is installed, it is characterized in that the interior side of molten aluminium body of heater (13) at the bottom of the round kiln is provided with aluminium liquid heat preservation zone (14), aluminium liquid straw (12) is installed in aluminium liquid heat preservation zone, flue gas is installed in the upper end of fire door (1) reclaims cover (3), air preheater (11) reclaims cover with flue gas, vertical body of heater (9) is connected, and the air intlet (2) of burner nozzle (18) links to each other with air preheater.
6. the molten aluminium stove of production ultrafine high activity aluminium powder according to claim 5, it is characterized in that the said burner nozzle is two, two burner nozzles are installed in the top of the molten aluminium body of heater (13) at the bottom of the round kiln, and the axis angle of two burner nozzles (18) is 70-100 degree.
7. the molten aluminium stove of production ultrafine high activity aluminium powder according to claim 6, the outside that it is characterized in that the molten aluminium body of heater (13) at the bottom of above-mentioned round kiln is equipped with air channel (17), the air channel is formed by being installed in the upper and lower air channel of melting the outside upper and lower end of aluminium body of heater and being installed in the outside furnace shell interlayer air channel that is connected with upper and lower air channel of molten aluminium body of heater, the exhaust outlet of blower fan (16) is connected with lower air duct, and the exhaust outlet of upper end, air channel is connected with air preheater (11) by pipeline; On the connecting line between above-mentioned flue gas recovery cover (3) and the air preheater (11), valve (4) is installed.
8. the molten aluminium stove of production ultrafine high activity aluminium powder according to claim 7, it is characterized in that on above-mentioned charge door (5), matching charge door seal cover (19) is installed, the charge door seal cover links to each other by the upper surface of hinge with vertical body of heater (9), on the vertical body of heater upper surface of hinge one side, be fixed with column (7), the column top is equipped with pulley, steel wire rope (6) one ends link to each other with the charge door seal cover, and the steel wire rope other end links to each other with hoist engine.
9. gas atomizing nozzle of producing the ultrafine high activity aluminium powder, it is characterized in that atomizer (21) is made up of nozzle (22) and annular water conservancy diversion cover (24), annular water conservancy diversion cover is sleeved on the nozzle cylindrical, the interior circle and the nozzle cylindrical of annular water conservancy diversion cover form the ring jet chamber (23) concentric with nozzle, and the ring jet chamber is connected with air shooter (25).
10. the gas atomizing nozzle of production ultrafine high activity aluminium powder according to claim 9 is characterized in that the periphery of said nozzle (22) and the inner headed face of annular water conservancy diversion cover (24) are the taper seat that matches.
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| CN105327859A (en) * | 2015-11-30 | 2016-02-17 | 河南省远洋粉体科技股份有限公司 | On-line classification system for aluminum powder production |
| CN107030286A (en) * | 2017-05-05 | 2017-08-11 | 湖南艾华集团股份有限公司 | A kind of preparation method of porous anodized aluminum material |
| CN108067627A (en) * | 2016-11-15 | 2018-05-25 | 镇江市润州金山金属粉末厂 | A kind of production technology of fine spherical aluminum powder |
| CN108367361A (en) * | 2015-10-29 | 2018-08-03 | Ap&C高端粉末涂料公司 | Metal powder is atomized manufacturing method |
| CN108436076A (en) * | 2018-05-23 | 2018-08-24 | 河南省远洋粉体科技股份有限公司 | Ball aluminum powder explosion-proof type closed cycle oxygenation after-treatment system |
| CN110918002A (en) * | 2019-12-24 | 2020-03-27 | 湖州织里卓成铝型材股份有限公司 | Raw material melting treatment equipment for aluminum processing production |
| CN111633215A (en) * | 2020-04-21 | 2020-09-08 | 武汉科技大学 | Method for preparing superfine spherical aluminum powder by high-pressure atomization |
| CN112404442A (en) * | 2020-11-17 | 2021-02-26 | 江苏威拉里新材料科技有限公司 | Fine spherical aluminum powder gas atomization preparation device |
| CN113020609A (en) * | 2021-03-03 | 2021-06-25 | 内蒙古旭阳新材料有限公司 | Low-energy-consumption high-yield spherical aluminum powder production system and method |
| CN113275578A (en) * | 2021-05-10 | 2021-08-20 | 内蒙古旭阳新材料有限公司 | Production equipment and method for passivated aluminum powder |
| US11198179B2 (en) | 2015-07-17 | 2021-12-14 | Ap&C Advanced Powders & Coating Inc. | Plasma atomization metal powder manufacturing processes and system therefor |
| US11235385B2 (en) | 2016-04-11 | 2022-02-01 | Ap&C Advanced Powders & Coating Inc. | Reactive metal powders in-flight heat treatment processes |
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