CN114751416A - Method for preparing spherical oxide - Google Patents
Method for preparing spherical oxide Download PDFInfo
- Publication number
- CN114751416A CN114751416A CN202210459354.7A CN202210459354A CN114751416A CN 114751416 A CN114751416 A CN 114751416A CN 202210459354 A CN202210459354 A CN 202210459354A CN 114751416 A CN114751416 A CN 114751416A
- Authority
- CN
- China
- Prior art keywords
- crucible
- metal
- oxygen
- temperature
- molten
- 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.)
- Pending
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/42—Preparation of aluminium oxide or hydroxide from metallic aluminium, e.g. by oxidation
- C01F7/422—Preparation of aluminium oxide or hydroxide from metallic aluminium, e.g. by oxidation by oxidation with a gaseous oxidator at a high temperature
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G3/00—Compounds of copper
- C01G3/02—Oxides; Hydroxides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/30—Particle morphology extending in three dimensions
- C01P2004/32—Spheres
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
Abstract
The invention discloses a method for manufacturing spherical oxide, wherein molten single metal is added into a crucible, the top of the crucible is sealed by a sealing cover, a feed inlet and a ventilation device are arranged on the sealing cover, a gas outlet of the ventilation device is positioned above the liquid level of the molten metal, oxygen-containing gas is introduced into the crucible by the ventilation device, the oxygen-containing gas provides oxygen required by oxidation reaction for the single metal, the molten metal is oxidized and blown into spherical particles under the action of the oxygen-containing gas, a discharge outlet is also arranged on the sealing cover, and the blown spherical particles are discharged out of the sealing cover through the discharge outlet under the action of blowing. The single metal releases heat energy in the oxidation process, the released heat energy can raise the temperature in the crucible and melt the newly added solid metal, so that the single metal in the crucible is always in a molten state, and the production of the whole system is continuous and effective for a long time. Blowing up and oxidizing the molten metal by an air blowing method to finally obtain spherical oxide with wide particle size distribution.
Description
Technical Field
The invention relates to the production of spherical metal particles, in particular to a method for manufacturing spherical oxide, in particular to a method for manufacturing spherical silicon dioxide.
Background
Spherical oxides are common in industrial application, but the preparation process is difficult, the production cost is high, and the obtained particle size is single, such as silicon dioxide. Silicon dioxide, commonly known as silica, has the formula SiO 2. Is the most common, most stable compound of silicon, which is widely distributed in nature and constitutes a variety of minerals and rocks.
Silica is used in the manufacture of sheet glass, glass products, foundry sand, glass fibers, ceramic glazes, sandblasting for rust protection, sand for filtration, fluxes, refractories and in the manufacture of lightweight cellular concrete. Silica has a wide range of applications. The relatively rare crystals of nature are used to manufacture important parts of the electronics industry, optical instruments and artworks. Silica is an important raw material for manufacturing optical fibers. Particularly, with the development of the current electronic technology, the screen display demand is increasing, so the demand for spherical silica is also increasing, and the specification requirements for spherical silica are also increasing, so that the silica obtained by the crushing and grinding method at present has edges and corners, and is difficult to be used alone industrially, while the spherical silica can be obtained by a chemical metallurgy method, but the particle size of the silica is small, usually less than 2 microns, and 2-50 microns of silica is obtained, so that no good industrial manufacturing method is available at present.
Disclosure of Invention
The present invention is directed to overcoming the disadvantages of the prior art and providing a method for producing a spherical oxide.
The purpose of the invention is realized by the following technical scheme: a method for preparing spherical oxide includes adding molten single metal into crucible, sealing top of crucible by sealing cover, setting feed inlet for adding block single metal and aerating device for aerating gas into crucible, aerating device for aerating gas into crucible to provide oxygen for single metal, oxidizing molten metal under action of aerating gas and blowing it into spherical particles, setting discharge outlet on sealing cover and discharging blown spherical particles out of sealing cover through discharge outlet under action of blowing air.
Optionally, the crucible is provided with a temperature sensor for detecting the temperature of the inner cavity, and when the temperature detected by the temperature sensor is higher than a set value, the temperature in the crucible is reduced or metal oxide is added to reduce the temperature in the crucible while adding single metal to supplement the materials in the crucible.
Optionally, the gas introduced by the ventilation device is air or oxygen.
Optionally, the pressure of the gas in the aeration device is at least 1 MPa.
Optionally, the single metal is metallic silicon.
Optionally, the single metal is metallic aluminum.
Optionally, the single metal is metallic copper.
The invention has the following advantages: the spherical oxide manufacturing method of the invention blows the molten metal oxide by the air blowing method to finally obtain the spherical metal oxide, the size and the particle size distribution of the obtained spherical metal oxide are wide, the spherical metal oxide with various specifications can be obtained, single metal is continuously added into the crucible, the introduced oxygen-containing gas provides oxygen required by the oxidation of the single metal, the single metal releases heat energy in the oxidation process, and the released heat energy can heat the temperature in the crucible, so that the single metal in the crucible is always in a molten state, the production of the whole spherical oxide is continuous and effective for a long time, and no energy consumption is caused.
Drawings
FIG. 1 is a schematic structural diagram of the present invention
In the figure, 1-crucible, 2-sealing cover, 3-feed inlet, 4-aeration device, 5-discharge outlet.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that the present invention is used to usually place, or orientations or positional relationships that are usually understood by those skilled in the art, which are merely for convenience of description and simplification of the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in figure 1, a method for manufacturing spherical oxide, add the molten single metal into crucible 1, the top of the crucible 1 is sealed through the sealed cowling 2, there are feed inlets 3 to add lumpy single metal and aerating apparatus 4 to inject oxygen-containing gas into crucible 1 on the sealed cowling 2, there are check valves on the feed inlets 3, when needing to add lumpy single metal, put lumpy single metal into sealed cowling 2 through the feed inlet 3, and lumpy single metal entering into sealed cowling 2 drops into crucible 1 under the influence of gravity, and in the course of charging, the check valve is opened, after finishing charging, the check valve is closed, thus has reduced the heat energy loss, has also prevented the air from discharging from feed inlet 3, also prevented the globular granule from blowing off from feed inlet 3, in this embodiment, the air outlet of the aerating apparatus 4 is located above the liquid level of the molten single metal, when a single metal is melted, the molten metal has low van der Waals force and can be blown up under a certain air pressure, spherical particles with different particle sizes are generated in the blowing-up process, in the embodiment, an oxygen-containing gas is introduced into a crucible 1 by an air introducing device 4, the oxygen-containing gas provides oxygen required by the oxidation reaction for the single metal, further, the gas introduced by the air introducing device 4 is air or oxygen, the molten metal is oxidized and blown into the spherical particles under the action of the oxygen-containing gas, in the production process, in order to ensure the efficiency of spherical particle production, the gas pressure in the air introducing device 4 is at least 1MPa, preferably, the gas pressure in the air introducing device 4 is 6 MPa, in the embodiment, a discharge port 5 is further arranged on the sealing cover 2, the blown spherical particles are discharged out of the sealing cover 2 through the discharge port 5 under the action of air blowing, the molten metal is blown up, continuously moves upwards under the action of the gas and is cooled and solidified at the same time, so that a ball shape is formed, the molten metal is blown up by the gas after being oxidized and is gradually far away from the crucible 1, so that the temperature is gradually reduced in the blowing-up process, finally, the ball-shaped metal oxide is formed, because the oxygen is mainly contacted with the upper surface of the molten metal liquid, the upper layer is that the molten metal is firstly oxidized, the oxidized metal oxide is distributed on the upper surface of the molten metal, the specific gravity of the oxidized metal oxide is lower than that of the single metal, the molten metal oxide is easier to be blown under the same air pressure, in the process of blowing the metal oxide, the partially molten single metal is blown, after the single metal is blown, the contact area with the gas is increased, the molten metal is rapidly oxidized under the action of the oxygen in the gas, so that the metal oxide is formed, finally, the single metal is discharged through a discharge hole, and if a small amount of single metal is not completely oxidized, the single metal can fall into the crucible due to the large specific gravity of the single metal.
In this embodiment, the crucible 1 is provided with a temperature sensor for detecting the temperature of the cavity, and when the temperature detected by the temperature sensor is higher than a predetermined value, a proper amount of lump of the same kind of metal or the metal oxide is added into the feed port 3 to lower the temperature in the crucible 1, and when the temperature detected by the temperature sensor is higher than the predetermined value, a lump of the single metal is added into the feed port 3, and then the oxygen content is controlled, thereby lowering the temperature in the crucible 1 and simultaneously supplementing the weight of the single metal. Blocky single metal adds in crucible 1 after, blocky single metal then gets into in the melting single metal liquid level and melts into liquid single metal under the effect of gravity, and blocky single metal can absorb heat energy in melting process, and at this moment, the gas that lets in toward the crucible reduces or then stops the air feed, thereby can control the oxidation rate of single metal, thereby control is exothermic, thereby make the temperature in crucible 1 can begin to descend, finally make the temperature in crucible 1 reach normal setting value, after the temperature in crucible 1 reaches the setting value, the rethread oxygen, make the single metal oxidized, thereby release heat energy, the raw materials has been supplemented promptly, control by temperature change has been realized again. In this embodiment, of course, when the temperature exceeds the high-temperature setting value, the metal oxide can be added in bulk into the crucible, and the added bulk metal oxide is melted under the high-temperature action, so as to absorb the heat energy, thereby lowering the temperature in the crucible, at this time, the oxygen content in the crucible is still controlled, so that the oxidation reaction in the crucible is weakened, the oxidation rate of the single metal is reduced, thereby reducing the heat release, and when the temperature in the crucible reaches the normal set value, the single metal can be added into the crucible 1, then the oxygen supply is ensured, the oxidation reaction of the single metal occurs, the temperature in the crucible 1 is raised by releasing heat again, of course, if the raw material of the single metal in the crucible 1 is sufficient, the supply of oxygen can be increased so that the oxidation reaction of the monometallics is vigorous and the heat energy released is increased to melt the solid monometallics just added. Therefore, in the process of manufacturing the spherical metal oxide, the heat energy is effectively utilized, so that the temperature in the crucible 1 can be controlled, the energy consumption is hardly reduced, and the industrial production is facilitated.
In this embodiment, if operating personnel leads to behind the temperature in the crucible 1 being less than normal setting value because of work error, nevertheless the temperature in the crucible 1 is still in high temperature this moment, then at this moment, then can add carbon through feed inlet 3, and carbon is thrown into crucible 1 in the back, and carbon is burnt, then releases heat energy to will heat up the temperature in the crucible 1, and then carbon dioxide gas has been formed after the carbon burning, and carbon dioxide gas then discharges away through discharge gate 5, and can not cause the atmosphere pollution.
The following description will be made by taking silicon dioxide, aluminum oxide and copper oxide as examples
The first embodiment is as follows: as shown in figure 1, a method for manufacturing spherical silicon dioxide, wherein molten single metal silicon is added into a crucible 1, the melting of the single metal silicon is carried out on other equipment, then the top of the crucible 1 is sealed by a sealing cover 2, the sealing cover 2 is provided with a feed inlet 3 for adding massive metal silicon and a ventilating device 4 for introducing oxygen-containing gas into the crucible 1, a gas outlet of the ventilating device 4 is positioned above the liquid level of the molten single metal silicon, the purpose is that gas can directly act on the liquid level of the molten single metal silicon after coming out of the gas outlet, the ventilating device 4 introduces oxygen-containing gas into the crucible 1, the oxygen-containing gas provides oxygen required by oxidation reaction for the metal silicon, the molten metal silicon is oxidized into silicon dioxide under the action of the oxygen-containing gas, the specific gravity of the silicon dioxide is low relative to that of the single metal, so that the oxidized silicon dioxide is easy to blow up, and the oxidized silicon dioxide forms spherical particles after being blown. When the gas acts on the liquid surface of the molten metal silicon, the pressure-bearing surface of the liquid surface of the molten metal silicon can be sunken, after the liquid surface is sunk and the gas enters the sunk part, part of the gas is separated from the sunk part from the edge of the sunk part, at the moment, the molten silicon metal is blown up and oxidized by the gas, and continuously moves upwards under the action of the gas and is cooled and solidified at the same time, thereby forming a sphere, and in the process, the partially molten metal silicon is blown up, and the blown metal silicon is oxidized into silicon dioxide by oxygen above the liquid level, after cooling, spherical silica is formed, and the blown up molten silicon metal, if not oxidized by oxygen, the specific gravity is higher, the spherical particles fall into the crucible again under the action of gravity, a discharge hole 5 is also formed in the sealing cover 2, and the blown spherical particles are discharged out of the sealing cover 2 through the discharge hole 5 under the action of air blowing; in the molten state of the silicon metal, the molten silicon metal has weak van der waals force and can be blown up under a certain air pressure, and the molten silicon dioxide has smaller specific gravity than the silicon metal, so the silicon metal is blown up more easily under the action of air blowing. In the production process, in order to ensure the production efficiency of the spherical silicon dioxide, the gas pressure in the ventilation device 4 is at least 1.0MPa, preferably, the gas pressure in the ventilation device 4 is 6 MPa, in the embodiment, the sealing cover 2 is further provided with a discharge hole 5, the blown-up metal silicon is oxidized into silicon dioxide and then is discharged out of the sealing cover 2 through the discharge hole 5 under the action of gas blowing, after the molten metal silicon is blown up, the molten metal silicon is continuously rolled and oxidized under the action of gas to form the spherical silicon dioxide, then the spherical silicon dioxide is gradually separated from the crucible 1, so that the temperature is gradually reduced in the blowing-up process, and finally the spherical silicon dioxide is formed. In this embodiment, after the lump silicon metal is added into the sealing cap 2 through the feeding hole 3, the lump silicon metal is not blown away by the gas, but falls into the crucible 1 under the action of gravity, and after the silicon metal enters the molten silicon metal, absorbs part of the heat of the molten silicon metal and emits more heat when being oxidized. During oxidation, the silicon metal provides heat for the molten pool, and the gas introduced through the aeration device 4 provides oxygen, at the same time, the silicon metal and the oxygen undergo oxidation reaction under high temperature environment, so that heat is released. In the embodiment, the gas introduced by the aeration device 4 is air or oxygen, preferably, the gas introduced by the aeration device 4 is air, and the production cost is low no matter air or oxygen, and the silicon metal is obtained by a mature method, so that the raw material obtaining is not needed to worry, namely, the raw material manufacturing is not difficult, and the method has a mature industrial manufacturing process, a large amount of heat energy is released during the oxidation reaction of the silicon metal and the oxygen, the temperature in the crucible 1 is increased under the action of the heat energy, so that the molten silicon metal is ensured to be always kept in a molten state, and the silicon dioxide generated by the oxidation reaction is moved to an outlet under the action of airflow. In this process, although a part of heat energy is taken away by the gas and a part of heat energy is also taken away by radiation, these lost heat energy are lower than the heat energy generated in the oxidation process of the metal silicon, so that there is no need to worry about the problem of insufficient temperature in the crucible 1, if the temperature in the crucible 1 is continuously increased, the high temperature resistance of the crucible 1 is required to be higher, and a large amount of heat energy is not effectively utilized, in order to solve the problem, in the embodiment, the crucible 1 is provided with a temperature sensor for detecting the temperature of the inner cavity, and after the temperature detected by the temperature sensor is higher than a set value, the massive metal silicon is added into the feed inlet 3, and then the oxygen content is controlled, so that the temperature in the crucible 1 is reduced, and the weight of the metal silicon in the crucible is supplemented. After the blocky silicon metal is added into the crucible 1, the blocky silicon metal enters the molten silicon metal and is melted into liquid silicon metal under the action of gravity, the blocky silicon metal can absorb heat energy in the melting process, at the moment, the gas introduced into the crucible is reduced or the gas supply is stopped, so that the oxidation speed of the silicon metal can be controlled, the heat release is controlled, the temperature in the crucible 1 can start to drop, finally, the temperature in the crucible 1 reaches a normal set value, when the temperature in the crucible 1 reaches the set value, oxygen is introduced again, the silicon metal is oxidized, so that the heat energy is released, so that the raw materials are supplemented, and the temperature control is realized, of course, in the embodiment, when the temperature exceeds the high-temperature set value, the blocky silicon dioxide can also be added into the crucible, and the added blocky silicon dioxide is melted under the action of high temperature, thereby absorbing heat energy, thereby reducing the temperature in the crucible, and at this moment, the oxygen content introduced into the crucible still needs to be controlled, so that the oxidation reaction in the crucible is weakened, the oxidation rate of the metal silicon is reduced, thereby reducing the heat release and avoiding overhigh temperature. When the temperature in the crucible reaches a normal set value, the metal silicon can be added into the crucible 1, then oxygen supply is ensured, the metal silicon is subjected to oxidation reaction, the temperature in the crucible 1 is raised again by releasing heat, of course, if the raw material of the metal silicon in the crucible 1 is sufficient, the supply of the oxygen can be improved, the metal silicon is subjected to oxidation reaction, and thus the released heat energy is increased, therefore, in the process of manufacturing the spherical silicon dioxide, the heat energy is effectively utilized, the temperature in the crucible 1 can be controlled, almost no energy consumption is caused, and the industrial production is facilitated.
In this embodiment, if operating personnel leads to behind the temperature in the crucible 1 being less than normal setting value because of work error, nevertheless the temperature in the crucible 1 is still in high temperature this moment, then at this moment, then can add carbon through feed inlet 3, and carbon is thrown into crucible 1 in the back, and carbon is burnt, then releases heat energy to will heat up the temperature in the crucible 1, and then carbon dioxide gas has been formed after the carbon burning, and carbon dioxide gas then discharges away through discharge gate 5, and can not cause the atmosphere pollution.
In this embodiment, the particle size of the spherical silica obtained by the manufacturing method is normally distributed, the particle size is 0.1 to 3000 micrometers, the particle size distribution is wide, the obtained spherical silica can be obtained by sieving to obtain spherical silica with various specifications, and the technical bottleneck that the spherical silica with the particle size of 2 to 10 micrometers is difficult to manufacture and produce in the prior art is solved.
Example two: as shown in figure 1, a method for manufacturing spherical aluminum oxide, add molten aluminum monometal into crucible 1, and the melting of aluminum monometal go on other apparatuses, then seal the top of crucible 1 by the sealed cap 2, and there are feed inlets 3 to add lumpy aluminum monometal and ventilating device 4 to introduce oxygen-containing gas into crucible 1 on the sealed cap 2, the air outlet of the ventilating device 4 is located above the liquid level of molten aluminum monometal, the purpose is that after the gas comes out from the air outlet, can directly act on the liquid level of molten aluminum monometal, the ventilating device 4 introduces oxygen-containing gas into crucible 1, the oxygen-containing gas provides the oxygen needed by oxidation reaction for aluminum metal, and molten aluminum metal is oxidized into aluminum oxide under the effect of oxygen-containing gas, the specific gravity of aluminum oxide is low relative to that of monometal, therefore the aluminum oxide after oxidation is easy to be blown up, the oxidized aluminum oxide forms spherical particles after being blown, when the gas acts on the liquid surface of the molten aluminum metal, the pressed surface of the liquid surface of the molten aluminum metal can be sunken, after the liquid surface is sunk and the gas enters the sunk part, part of the gas is separated from the sunk part from the edge of the sunk part, at the moment, the molten aluminum is blown up by the gas and continuously moves upwards under the action of the gas and is cooled and solidified at the same time, thereby forming a sphere, and in the process, the partially molten metal aluminum is blown up, and the blown metal aluminum is oxidized into aluminum oxide by oxygen above the liquid level, after cooling, spherical aluminum oxide is formed, and the blown molten aluminum metal, if not oxidized by oxygen, the specific gravity is higher, the particles fall into the crucible again under the action of gravity, a discharge port 5 is also arranged on the sealing cover 2, and the blown spherical particles are discharged out of the sealing cover 2 through the discharge port 5 under the action of air blowing; the molten aluminum is blown up under a certain air pressure because of weaker van der Waals force of the molten aluminum in a molten state, and the aluminum oxide has a smaller specific gravity than the aluminum metal, so the aluminum oxide is more easily blown up under the action of air blowing. In the production process, in order to ensure the production efficiency of the spherical aluminum oxide, the gas pressure in the ventilation device 4 is at least 1.0MPa, preferably, the gas pressure in the ventilation device 4 is 6 MPa, in this embodiment, the sealing cover 2 is further provided with a discharge port 5, the blown metal aluminum is oxidized into aluminum oxide and then discharged out of the sealing cover 2 through the discharge port 5 under the action of blowing gas, and after the molten metal aluminum is blown, the molten metal aluminum is continuously rolled and oxidized under the action of gas to form the spherical aluminum oxide, and then the spherical aluminum oxide is gradually kept away from the crucible 1, so that the temperature is gradually reduced in the blowing process, and finally the spherical aluminum oxide is formed. In this embodiment, after the blocky aluminum metal is added into the sealing cover 2 through the feeding hole 3, the blocky aluminum metal is not blown away by gas, but falls into the crucible 1 under the action of gravity, the aluminum metal enters into the molten aluminum metal bath, and the gas introduced through the ventilation device 4 provides oxygen, at this time, the aluminum metal can be oxidized with the oxygen under the high-temperature environment, so as to release heat. In this embodiment, the gas introduced by the aeration device 4 is air or oxygen, preferably, the gas introduced by the aeration device 4 is air, and whether air or oxygen is air or oxygen, the production cost is low, and the metal aluminum is obtained by a mature method, so that there is no need to worry about obtaining raw materials, that is, the raw materials are not difficult to produce, and the method has a very mature industrial production process, the metal aluminum releases a large amount of heat energy in the oxidation reaction process with oxygen, and the temperature in the crucible 1 is raised under the action of the heat energy, so as to ensure that the molten metal aluminum is always in a molten state, and the aluminum oxide generated by the oxidation reaction is moved to an outlet under the action of airflow. In this process, although a part of heat energy can be taken away by gas and a part of heat energy can also be taken away by radiation, the heat energy lost can be lower than that generated in the oxidation process of the metal aluminum, so that the problem that the temperature in the crucible 1 is insufficient does not need to be worried about, if the temperature in the crucible 1 is continuously increased, the high-temperature resistance of the crucible 1 is required to be higher, and a large amount of heat energy can not be effectively utilized, in order to solve the problem, in the embodiment, the crucible 1 is provided with a temperature sensor for detecting the temperature of an inner cavity, and after the temperature detected by the temperature sensor is higher than a set value, the massive metal aluminum is added into the feed inlet 3, and then the oxygen content is controlled, so that the temperature in the crucible 1 is reduced, and the weight of the metal aluminum is supplemented. Blocky metallic aluminum adds back in crucible 1, blocky metallic aluminum then gets into molten metal aluminium and melts into liquid metallic aluminum under the effect of gravity, and blocky metallic aluminum can emit a large amount of heat energy at oxidation process, and at this moment, the gas that lets in the crucible reduces or then stops the air feed, thereby can control metallic aluminum's oxidation rate, thereby control is exothermic, thereby make the temperature in crucible 1 can begin to descend, finally make the temperature in crucible 1 reach normal set value. When the temperature in the crucible 1 reaches a set value, oxygen is introduced again to oxidize the metal aluminum, so that heat energy is released, thereby supplementing the raw materials and realizing temperature control. Therefore, in the process of manufacturing the spherical aluminum oxide, the heat energy is effectively utilized, so that the temperature in the crucible 1 can be controlled, almost no energy is consumed, and the industrial production is facilitated.
In this embodiment, if operating personnel leads to behind the temperature in the crucible 1 is less than normal setting value because of work error, nevertheless the temperature in the crucible 1 is in high temperature still this moment, then at this moment, then can add carbon through feed inlet 3, carbon is thrown into crucible 1 back, and carbon is burnt, then releases heat energy to will heat up the temperature in the crucible 1, and then carbon combustion has formed carbon dioxide gas, carbon dioxide gas then discharges away through discharge gate 5, and can not cause the atmosphere pollution.
In this embodiment, the spherical alumina obtained by the manufacturing method has a normal distribution of particle sizes, and the particle sizes are distributed widely, so that various types of spherical alumina can be obtained by sieving.
Example three: as shown in figure 1, a method for manufacturing spherical copper oxide, which comprises the steps of adding molten copper monometal into a crucible 1, wherein the melting of the copper monometal is carried out in other equipment, then sealing the top of the crucible 1 by a sealing cover 2, wherein a feed inlet 3 for adding blocky copper monometal and a ventilating device 4 for introducing oxygen-containing gas into the crucible 1 are arranged on the sealing cover 2, a gas outlet of the ventilating device 4 is positioned above the liquid level of the molten copper monometal, so that the gas can directly act on the liquid level of the molten copper monometal after coming out of the gas outlet, the ventilating device 4 introduces the oxygen-containing gas into the crucible 1, the oxygen-containing gas provides oxygen required by oxidation reaction for the copper monometal, the molten copper monometal is oxidized to form copper oxide under the action of the oxygen-containing gas, the specific gravity of the copper oxide is low relative to the monometal, therefore, the oxidized copper oxide is easy to be blown up, the oxidized copper oxide forms spherical particles after being blown, when the gas acts on the liquid surface of the molten metal copper, the pressed surface of the liquid surface of the molten metal copper can be sunken, after the liquid surface is sunk and the gas enters the sunk part, part of the gas is separated from the sunk part from the edge of the sunk part, at the moment, the molten copper is blown up by the gas and continuously moves upwards under the action of the gas and is cooled and solidified at the same time, thereby forming a ball shape, and in the process, the partially molten metal copper is blown up, and the blown metal copper is oxidized into copper oxide by oxygen above the liquid level, after cooling, spherical copper oxide is formed, and the blown-up molten copper metal, if not oxidized by oxygen, the specific gravity is higher, the particles fall into the crucible again under the action of gravity, a discharge port 5 is also arranged on the sealing cover 2, and the blown spherical particles are discharged out of the sealing cover 2 through the discharge port 5 under the action of air blowing; the specific gravity of the molten copper oxide is smaller than that of the metal copper, so that the molten metal copper can be blown up more easily under the action of air blowing. In the production process, in order to ensure the production efficiency of the spherical copper oxide, the gas pressure in the ventilation device 4 is at least 1.0MPa, preferably, the gas pressure in the ventilation device 4 is 6 MPa, in the embodiment, the sealing cover 2 is further provided with a discharge port 5, the blown metal copper is oxidized into copper oxide and then discharged out of the sealing cover 2 through the discharge port 5 under the action of gas blowing, after the molten metal copper is blown, the molten metal copper is continuously rolled and oxidized under the action of gas to form spherical copper oxide, and then the molten metal copper is gradually far away from the crucible 1 so as to be gradually cooled in the blowing process and finally form the spherical copper oxide. In this embodiment, after blocky metal copper added the sealed cowling 2 through feed inlet 3, blocky metal copper can not blown away by gas, but can fall into crucible 1 under the effect of gravity in, the metal copper melts after entering into fused metal copper, and the gas that lets in through breather 4 then provides oxygen, and at this moment, metal copper then can take place oxidation reaction with oxygen under the environment of high temperature to release the heat. In the embodiment, the gas introduced by the ventilating device 4 is air or oxygen, preferably, the gas introduced by the ventilating device 4 is air, and the production cost is low no matter air or oxygen, and the metal copper is obtained by a mature method, so that the raw material obtaining is not needed to worry, namely, the raw material manufacturing is not difficult, and the method has a very mature industrial manufacturing process, the metal copper can release a large amount of heat energy in the process of carrying out oxidation reaction with the oxygen, the temperature in the crucible 1 can be increased under the action of the heat energy, so that the molten metal copper is ensured to be always kept in a molten state, and the copper oxide generated by the oxidation reaction can move to an outlet under the action of airflow. In this process, although a part of heat energy is taken away by gas and a part of heat energy is also taken away by radiation, these lost heat energy are lower than the heat energy generated in the oxidation process of the metal copper, so that the problem that the temperature in the crucible 1 is insufficient is not needed to be worried about, if the temperature in the crucible 1 is continuously increased, the high temperature resistance of the crucible 1 is required to be higher, and a large amount of heat energy is not effectively utilized, in order to solve the problem, in the embodiment, the crucible 1 is provided with a temperature sensor for detecting the temperature of an inner cavity, when the temperature detected by the temperature sensor is higher than a set value, the blocky metal copper is added into the feed inlet 3, and then the oxygen content is controlled, so that the temperature in the crucible 1 is reduced, and the weight of the metal copper is supplemented. After the blocky metal copper is added into the crucible 1, the blocky metal copper enters the molten metal copper under the action of gravity and is melted into liquid metal copper, the blocky metal copper can absorb heat energy in the melting process, at the moment, the gas introduced into the crucible is reduced or the gas supply is stopped, so that the oxidation speed of the metal copper can be controlled, the heat release is controlled, the temperature in the crucible 1 can begin to drop, and finally the temperature in the crucible 1 reaches a normal set value; when the temperature in the crucible 1 reaches the set value, oxygen is introduced again to oxidize the copper metal, thereby releasing heat energy, thereby replenishing the raw material and realizing temperature control, of course, in this embodiment, when the temperature exceeds the high temperature set value, the copper oxide block can be added into the crucible, the added copper oxide block is melted under the action of high temperature to absorb heat energy, thereby reducing the temperature in the crucible, at this moment, the oxygen content introduced into the crucible is still controlled, so that the oxidation reaction in the crucible is weakened, the oxidation rate of the copper metal is reduced, thereby reducing heat release, when the temperature in the crucible just past reaches the normal set value, the copper metal can be added into the crucible 1, then the oxygen supply is ensured, the oxidation reaction of the copper metal occurs, the heat is released again to increase the temperature in the crucible 1, of course, if the raw material of the copper metal in the crucible 1 is sufficient, the supply of oxygen can be improved, so that the oxidation reaction of the metal copper is violent, and the released heat energy is increased, therefore, in the process of manufacturing the spherical copper oxide, the heat energy is effectively utilized, the temperature in the crucible 1 can be controlled, the energy consumption is almost avoided, and the industrial production is facilitated.
In this embodiment, if operating personnel leads to behind the temperature in the crucible 1 being less than normal setting value because of work error, nevertheless the temperature in the crucible 1 is still in high temperature this moment, then at this moment, then can add carbon through feed inlet 3, and carbon is thrown into crucible 1 in the back, and carbon is burnt, then releases heat energy to will heat up the temperature in the crucible 1, and then carbon dioxide gas has been formed after the carbon burning, and carbon dioxide gas then discharges away through discharge gate 5, and can not cause the atmosphere pollution.
In this example, the spherical copper oxide obtained by the manufacturing method had a normal particle size distribution, and the particle size distribution was wide, and various types of spherical copper oxide could be obtained by sieving.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (7)
1. A method for manufacturing a spherical oxide, characterized in that: adding molten single metal into a crucible, sealing the top of the crucible by a sealing cover, arranging a feed inlet for adding blocky single metal and a ventilation device for introducing oxygen-containing gas into the crucible on the sealing cover, wherein a gas outlet of the ventilation device is positioned above the liquid level of the molten metal, introducing the oxygen-containing gas into the crucible by the ventilation device, providing oxygen required by oxidation reaction for the single metal by the oxygen-containing gas, oxidizing the molten metal under the action of the oxygen-containing gas and blowing the molten metal into spherical particles, and arranging a discharge outlet on the sealing cover, wherein the blown spherical particles are discharged out of the sealing cover through the discharge outlet under the action of air blowing.
2. The method for producing a spherical oxide according to claim 1, wherein: the crucible is provided with a temperature sensor for detecting the temperature of the inner cavity, and when the temperature detected by the temperature sensor is greater than a set value, the temperature in the crucible is reduced while materials in the crucible are supplemented by adding single metal into the feeding port.
3. The method for producing a spherical oxide according to claim 1, wherein: the air introduced by the ventilation device is air or oxygen.
4. The method for producing a spherical oxide according to claim 1 or 3, wherein: the gas pressure in the aeration device is at least 1MPa。
5. The method for manufacturing a spherical oxide according to claim 1, wherein: the single metal is metal silicon.
6. The method for producing a spherical oxide according to claim 1, wherein: the single metal is metallic aluminum.
7. The method for manufacturing a spherical oxide according to claim 1, wherein: the single metal is copper metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210459354.7A CN114751416A (en) | 2022-04-28 | 2022-04-28 | Method for preparing spherical oxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210459354.7A CN114751416A (en) | 2022-04-28 | 2022-04-28 | Method for preparing spherical oxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114751416A true CN114751416A (en) | 2022-07-15 |
Family
ID=82333869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210459354.7A Pending CN114751416A (en) | 2022-04-28 | 2022-04-28 | Method for preparing spherical oxide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114751416A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103038180A (en) * | 2010-06-16 | 2013-04-10 | 山特森西特股份有限公司 | Method and device for producing polycrystalline silicon blocks |
| US20160002055A1 (en) * | 2013-02-13 | 2016-01-07 | Korea Institute Of Energy Research | SiOx NANOPARTICLE MANUFACTURING APPARATUS INCLUDING CRUCIBLE FOR SILICON MELTING HAVING SLIDING TYPE TAPPING STRUCTURE AND MANUFACTURING METHOD OF SiOx NANOPARTICLE USING THE SAME |
| CN106745012A (en) * | 2017-03-17 | 2017-05-31 | 辽宁科技大学 | A kind of oxidizing process continuously prepares Nano-meter SiO_22Device and process |
| CN107601537A (en) * | 2017-11-01 | 2018-01-19 | 乌鲁木齐市三锐科技有限公司 | Rafifinal atomization explosion method prepares the method and special purpose device of high-purity alumina powder |
-
2022
- 2022-04-28 CN CN202210459354.7A patent/CN114751416A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103038180A (en) * | 2010-06-16 | 2013-04-10 | 山特森西特股份有限公司 | Method and device for producing polycrystalline silicon blocks |
| US20160002055A1 (en) * | 2013-02-13 | 2016-01-07 | Korea Institute Of Energy Research | SiOx NANOPARTICLE MANUFACTURING APPARATUS INCLUDING CRUCIBLE FOR SILICON MELTING HAVING SLIDING TYPE TAPPING STRUCTURE AND MANUFACTURING METHOD OF SiOx NANOPARTICLE USING THE SAME |
| CN106745012A (en) * | 2017-03-17 | 2017-05-31 | 辽宁科技大学 | A kind of oxidizing process continuously prepares Nano-meter SiO_22Device and process |
| CN107601537A (en) * | 2017-11-01 | 2018-01-19 | 乌鲁木齐市三锐科技有限公司 | Rafifinal atomization explosion method prepares the method and special purpose device of high-purity alumina powder |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107601537B (en) | Method for preparing high-purity alumina powder by high-purity aluminum atomization fast combustion method and special device | |
| WO2007129509A1 (en) | Process for producing glass | |
| CN100469494C (en) | Production facility and production method for atomized producing ball-shaped magnesite powder | |
| JP2009149494A (en) | Method and apparatus for manufacturing silica glass | |
| CN102689391A (en) | Aluminum silicate fiber collodion cotton and production method for highly processed product of aluminium silicate fiber collodion | |
| CN108262846A (en) | Utilize the production line for smelting slag production foaming crystallite fireproof thermal insulation decoration integrated board | |
| CN114751416A (en) | Method for preparing spherical oxide | |
| CN210125730U (en) | Heat-preservation steel ladle masonry structure | |
| CN101704100A (en) | Tundish breathable water inlet used for metal continuous casting plate blank and preparation method thereof | |
| US20220411306A1 (en) | Feeder Alcove and Batch Feeding Apparats for a Melter | |
| CN102583975B (en) | Method of manufacturing granulated silica powder, method of manufacturing vitreous silica crucible | |
| CN110538587B (en) | Powder spraying semi-solid pulping device based on gas stirring and working method thereof | |
| CN106735173A (en) | A kind of metal-based compound 3D printing material and preparation method thereof | |
| CN103769596A (en) | Method for preparing high-stacking-density oblate powder material | |
| JP3478468B2 (en) | Method and apparatus for producing inorganic spherical particles | |
| CN109019668B (en) | Method for preparing superfine active zinc oxide powder by hot ball milling oxidation | |
| CN210023786U (en) | Device for producing spherical metal powder for 3D printing | |
| CN200951462Y (en) | Equipment for atomizing preparation of ball shaped magnesium powder | |
| CN108555231A (en) | A kind of humble carbon-iron alloy casting metal mold environmental protection coating material and its preparation process based on phase transformation reaction | |
| WO2019078270A1 (en) | Method for producing decarbonated granules and method for producing glass article | |
| CN114592137B (en) | Explosion-proof device for self-propagating production of kilogram-grade gamma-TiAlNb alloy in one-step furnace | |
| CN108950282B (en) | A kind of preparation method of the aluminium alloy containing micropore | |
| KR20030067630A (en) | Construction process and equipment of zinc oxide fine powder | |
| CN214488833U (en) | Additive forming equipment for semi-solid metal slurry | |
| CN216953999U (en) | Premelting refining slag arc furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |