CN105258498A - Superfine nano powder calcining furnace - Google Patents
Superfine nano powder calcining furnace Download PDFInfo
- Publication number
- CN105258498A CN105258498A CN201510755653.5A CN201510755653A CN105258498A CN 105258498 A CN105258498 A CN 105258498A CN 201510755653 A CN201510755653 A CN 201510755653A CN 105258498 A CN105258498 A CN 105258498A
- Authority
- CN
- China
- Prior art keywords
- inner bag
- nano powder
- superfine nano
- heater
- rotation
- 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
Abstract
The invention provides a superfine nano powder calcining furnace which comprises a furnace body (1), a liner (2) which is placed inside the furnace body and is connected with the inner wall of the furnace body (1), and a rotation control part, wherein the superfine nano powder is placed in the liner; the furnace body (1) comprises a heating and temperature-controlling device for providing a high-temperature environment required by sintering superfine nano powder; the rotation control part comprises a rotary shaft (4) which penetrates through the furnace body (1) and the liner (2), and a motor connected with the rotary shaft; the rotation of the liner (2) is controlled by virtue of a control circuit; by virtue of the rotation of the liner, the sintered superfine nano powder is continuously carried to a high position of the furnace body, is poured down by virtue of gravity action, and is dispersed into the liner. The superfine nano powder calcining furnace realizes preparation for superfine nano powder with a good crystal structure through high-temperature sintering while a particle size is not increased.
Description
Technical field
The present invention relates to a kind of design of novel high temperature stove, realize the high temperature preparation of superfine nano powder.
Background technology
The crystal structure of nano material and size most important for its physics and chemistry character.Generally for and obtain ultra-fine nano particle, can only prepare under very low sintering temperature, although and high temperature preparation effectively can improve crystal structure, the sharply increase of particle size can be brought.Although also there is a series of chemical method can realize the preparation of superfine nano powder under low temperature, method is complicated, usually cannot realize a large amount of preparation.Also have many materials also there is no effective cryochemistry preparation technology simultaneously.Technique how by high temperature sintering obtains good crystal structure, and particle size can obtain problem in the urgent need to address when effectively limiting and do not increase with the rising of sintering temperature simultaneously.We devise one revolvable stove of inner bag in sintering process, and the blade of the similar rotation of catch of wall of inner container, fully can disperse needing the dusty material of high temperature sintering crystallization constantly to raise in the middle part of inner bag, stop growing up of particle.
Summary of the invention:
Technical problem: the object of the present invention is to provide a kind of superfine nano powder calcining furnace, its inner bag can rotate, for the preparation of superfine nano dusty material.
Summary of the invention: for solving the problems of the technologies described above, the invention provides a kind of superfine nano powder calcining revolving burner, comprise body of heater, be placed on furnace interior and the inner bag be connected with inboard wall of furnace body, rotation-control members, superfine nano powder is placed in inner bag,
Body of heater, comprises heating and temperature regulating device, for providing superfine nano powder sintered required hot environment;
Rotation-control members, comprises the rotating shaft running through body of heater and inner bag, the motor be connected with rotating shaft, is realized the control rotated inner bag by control circuit;
Inner bag, by the rotation of inner bag, the eminence that the continual superfine nano powder by sintering takes body of heater to toppled over by Action of Gravity Field and under, be scattered in the middle of inner bag.
Preferably, body of heater adopts cylinder-like structure, and its two ends seal, and inner bag is in communication with the outside by rotating shaft.
Preferably, body of heater heating adopts any one in electric furnace heating wire, Elema or Si-Mo rod, adopts thermocouple measuring temperature, utilizes temperature controller to carry out temperature control.
Preferably, inner bag has cylinder-like structure, two ends connection rotating shaft; Wall of inner container is provided with the baffle plate of inclination, and in inner bag rotary course, for taking raw material to top from bottom, then raw material gravitate is trickled down and fully disperses in the middle part of inner bag.
Beneficial effect:
Utilize the stove that the present invention designs, can realize powder particle sample and disperse as much as possible in high-temperature sintering process, the particle size avoiding intergranular combination to cause is grown up, and obtains the powder particle sample of size at nanoscale of well-crystallized.The method is simple to operate, does not need complicated technique, is easy to control, can be used for the preparation of high-quality samples of nanopowders.
Accompanying drawing explanation
Fig. 1 a is the axial arrangement schematic diagram of superfine nano powder calcining revolving burner,
Fig. 1 b is for being transversary schematic diagram.
1-body of heater
2-inner bag 21-wall of inner container
3-baffle plate
4-rotating shaft
5-superfine nano powder
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described.
Superfine nano powder calcining revolving burner provided by the invention, comprise body of heater 1, be placed on furnace interior and the inner bag 2 be connected with body of heater 1 inwall, rotation-control members, superfine nano powder is placed in inner bag, wherein,
Body of heater 1, comprises heating and temperature regulating device, for providing superfine nano powder sintered required hot environment;
Rotation-control members, comprises the rotating shaft 4 running through body of heater 1 and inner bag 2, the motor be connected with rotating shaft, is realized the control rotated inner bag 2 by control circuit;
Inner bag 2, by the rotation of inner bag, the eminence that the continual superfine nano powder by sintering takes body of heater to toppled over by Action of Gravity Field and under, be scattered in the middle of inner bag.
Body of heater 1 adopts cylinder-like structure, and its two ends seal, and inner bag 2 is in communication with the outside by rotating shaft 4.
Body of heater 1 heats any one in employing electric furnace heating wire, Elema or Si-Mo rod, adopts thermocouple measuring temperature, utilizes temperature controller to carry out temperature control.
Inner bag has cylinder-like structure, two ends connection rotating shaft; Wall of inner container 21 is provided with the baffle plate 3 of inclination, and in inner bag rotary course, for taking raw material to top from bottom, then raw material gravitate is trickled down and fully disperses in the middle part of inner bag.
1. the preparation of bismuth ferrite superfine nano powder
Simultaneously bismuth ferrite a kind ofly has ferroelectricity higher than room temperature and anti-ferromagnetic multiferroic oxide, needs to be less than by preparation particle size the weak ferromagnetism that its spiralization cycle 64 nanometer obtains macroscopic view.High temperature sintering causes its particle size sharply to increase.
Adopt stove of the present invention, low-temperature sintering can be become the bismuth ferrite superfine nano dusty material of phase to put into inner bag, by the rotation of inner bag, bismuth ferrate nano dusty material is caused constantly to be taken to the eminence of stove by the baffle plate of wall of inner container, fall due to gravity subsequently, the rotation of inner bag is in higher speed, such as 1 revolutions per second, reduce powder as far as possible and pile up the time stopped at wall of inner container, keep it in inner bag, be in abundant dispersity.Furnace temperature is elevated to 700 degree, is incubated 5 hours.The sintering of the stove designed by the present invention, the existing good crystal structure of bismuth ferrate nano dusty material, can keep ultra-fine nanoparticle size again simultaneously.
2. the preparation of ferrite superfine powder
Ferrite Material and a lot of modern science and technology of superparamagnetic are closely related, and such as magnetic fluid technique, nuclear magnetic resonance becomes equal.Ferritic magnetic and its structure closely related.Obtain good ferrimagnetism, Ferrite Material must have good crystal structure, and this needs higher sintering temperature usually, but the sintering of high temperature can cause again the increase of its particle size, is greater than the critical value of superparamagnetism, destroys its superparamagnetism.Common preparation is all the chemical method under employing low temperature.
Adopt the stove that the inner bag of the present invention's design rotates, the ferrite nano dusty material becoming phase can be sintered at low temperatures, put into stove inner bag, temperature is elevated to 800 degree to 1200 degree, by the fast rotational of stove inner bag in sintering process, ferrite powder material is well dispersed in the central space of stove inner bag, avoid the Long contact time between particle, so both can at high temperature obtain sufficient crystallization, and the size of particle can be kept again to be less than critical value and to obtain superparamagnetism simultaneously.
The invention provides a kind of design preventing Long contact time between particle from causing the superfine nano dusty material calcining furnace of grain growth in sintering process, by being designed with the blade of certain inclination at body of heater inner bag, in stove inner bag rotary course, the superfines sintered is brought to inner bag top, then under because Action of Gravity Field is toppled over, fully scatter in inner bag space, along with the rotation of inner bag goes round and begins again, powder in sintering process is fully scattered in the middle part of body of heater, avoid the grain growth that Long contact time between particle causes, thus realize particle size and do not grow up, obtained the preparation of the superfine nano powder of good crystalline structure by high temperature sintering simultaneously.
The invention provides thinking and the implementation method of the preparation of a kind of simple and practical ultra-fine nano-powder material sintering; embody rule approach is a lot; the above is only the preferred embodiment of the present invention; should be understood that; for those skilled in the art; under the premise without departing from the principles of the invention; some improvement can also be made; the shape of such as inner bag and body of heater can do further improvement; on the basis of stove of the present invention; pass into various gases etc. further, these improvement also should be considered as protection scope of the present invention.
Claims (4)
1. a superfine nano powder calcining revolving burner, comprise body of heater (1), be placed on furnace interior and the inner bag (2) be connected with body of heater (1) inwall, rotation-control members, superfine nano powder is placed in inner bag, it is characterized in that:
Body of heater (1), comprises heating and temperature regulating device, for providing superfine nano powder sintered required hot environment;
Rotation-control members, comprises the rotating shaft (4) running through body of heater (1) and inner bag (2), the motor be connected with rotating shaft, is realized the control rotated inner bag (2) by control circuit;
Inner bag (2), by the rotation of inner bag, the eminence that the continual superfine nano powder by sintering takes body of heater to toppled over by Action of Gravity Field and under, be scattered in the middle of inner bag.
2. superfine nano powder calcining revolving burner according to claim 1, it is characterized in that, body of heater (1) adopts cylinder-like structure, and its two ends seal, and inner bag (2) is in communication with the outside by rotating shaft (4).
3. superfine nano powder calcining revolving burner according to claim 2, it is characterized in that, body of heater (1) heating adopts any one in electric furnace heating wire, Elema or Si-Mo rod, adopts thermocouple measuring temperature, utilizes temperature controller to carry out temperature control.
4. superfine nano powder calcining revolving burner according to claim 1, it is characterized in that, inner bag has cylinder-like structure, two ends connection rotating shaft; Wall of inner container (21) is provided with the baffle plate (3) of inclination, and in inner bag rotary course, for taking raw material to top from bottom, then raw material gravitate is trickled down and fully disperses in the middle part of inner bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510755653.5A CN105258498A (en) | 2015-11-09 | 2015-11-09 | Superfine nano powder calcining furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510755653.5A CN105258498A (en) | 2015-11-09 | 2015-11-09 | Superfine nano powder calcining furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105258498A true CN105258498A (en) | 2016-01-20 |
Family
ID=55098288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510755653.5A Pending CN105258498A (en) | 2015-11-09 | 2015-11-09 | Superfine nano powder calcining furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105258498A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107054424A (en) * | 2017-03-31 | 2017-08-18 | 安徽再制造工程设计中心有限公司 | A kind of nanometer powder stack pallet |
| CN109894626A (en) * | 2019-03-22 | 2019-06-18 | 天津大学 | A kind of rotary calcining of Yttrium oxide doping tungsten composite powder and reducing preparation method |
| CN111473642A (en) * | 2020-04-20 | 2020-07-31 | 西北民族大学 | Sintering furnace for silicon carbide and metal composite material |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101392987A (en) * | 2008-10-30 | 2009-03-25 | 中国船舶重工集团公司第七二五研究所 | Design and structure for controllable atmosphere rotating furnace for oxidizing albronze alloy powder |
-
2015
- 2015-11-09 CN CN201510755653.5A patent/CN105258498A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101392987A (en) * | 2008-10-30 | 2009-03-25 | 中国船舶重工集团公司第七二五研究所 | Design and structure for controllable atmosphere rotating furnace for oxidizing albronze alloy powder |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107054424A (en) * | 2017-03-31 | 2017-08-18 | 安徽再制造工程设计中心有限公司 | A kind of nanometer powder stack pallet |
| CN109894626A (en) * | 2019-03-22 | 2019-06-18 | 天津大学 | A kind of rotary calcining of Yttrium oxide doping tungsten composite powder and reducing preparation method |
| CN111473642A (en) * | 2020-04-20 | 2020-07-31 | 西北民族大学 | Sintering furnace for silicon carbide and metal composite material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105258498A (en) | Superfine nano powder calcining furnace | |
| Peng et al. | Effect of Pr3+ doping on magnetic and dielectric properties of Ni–Zn ferrites by “one-step synthesis” | |
| CN104117329B (en) | A kind of preparation method of carbon coated ferriferrous oxide magnetic microsphere | |
| Pati et al. | High temperature phase transformation studies in magnetite nanoparticles doped with Co2+ ion | |
| Tang et al. | Ethylene glycol assisted hydrothermal synthesis of strontium hexaferrite nanoparticles as precursor of magnetic fluid | |
| Chen et al. | Dielectric and magnetic properties of multiferroic BiFeO3 ceramics sintered with the powders prepared by hydrothermal method | |
| CN106252017B (en) | A kind of room temperature ferromagnetic semiconductor material MnSiP2And its preparation method and application | |
| Zhu et al. | Preparation, characterizaton and formaldehyde gas sensing properties of walnut-shaped BiFeO3 microspheres | |
| CN103787420A (en) | Method for preparing SrFe12O19 magnetic nano powder by using microwave hydrothermal method | |
| Samatha et al. | Electrical and electrochemical properties of nanostructured Ni and Zn substituted Co3O4 spinels for thermistors and supercapacitor applications | |
| CN103449520A (en) | Rod-like niobium pentoxide template grain and preparation method thereof | |
| CN105948135B (en) | A kind of monodisperse porous magnetic sub-micro ball and preparation method thereof | |
| Kumar et al. | Effect of dilute co-doping of Ni and Cr on physical properties of TiO2 nanoparticles | |
| CN105777098B (en) | Ferritic preparation method, ferrite and inductor | |
| CN106830032B (en) | A kind of method that hierarchical structure boehmite powder is prepared using microwave-hydrothermal method | |
| CN104591302B (en) | A kind of calcium-titanium ore type nano material and preparation method thereof | |
| CN207287607U (en) | Ball mill | |
| Chen et al. | Improvement of the Magnetization of Barium Hexaferrites Induced by Substitution of Nd 3+ Ions for Fe 3+ Ions | |
| CN103601483B (en) | The synthetic method of lanthanum additive Mn iron strontium oxide magnetic powder | |
| CN105314680A (en) | Preparing method for nanometer lanthanum chromate | |
| CN207797735U (en) | A kind of kaolin powder low temperature calcination device | |
| CN107903072A (en) | The method that two step coprecipitations prepare strontium barium niobate nano-powder | |
| Lin et al. | Oxygen vacancy relaxation in Ca3Co4O9+ δ Ceramics | |
| CN111087023B (en) | Room temperature multiferroic material Ba4SmFe0.5Nb9.5O30Preparation method of (2) and prepared room-temperature multiferroic material | |
| Dong et al. | Dielectric Properties of (1-x) BaTiO3-x BaFe12O19 Composite Ceramics |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160120 |