CN203946896U - A kind of equipment of continuous production aluminum nitride powder - Google Patents
A kind of equipment of continuous production aluminum nitride powder Download PDFInfo
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- CN203946896U CN203946896U CN201420324212.0U CN201420324212U CN203946896U CN 203946896 U CN203946896 U CN 203946896U CN 201420324212 U CN201420324212 U CN 201420324212U CN 203946896 U CN203946896 U CN 203946896U
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Abstract
The utility model relates to a kind of production unit of aluminum nitride powder, a kind of equipment of continuous production aluminum nitride powder particularly, this equipment comprises rotary bottom type annular graphite resistor furnace and heating unit, in the ring seal body of heater of rotary bottom type annular graphite resistor furnace, material boat is installed, the ring seal body of heater that it is characterized in that rotary bottom type annular graphite resistor furnace is divided into reduction nitridation district and de-carbon district, feed bin and inhaling type loading head are installed on the ring seal body of heater between reduction nitridation district and de-carbon district, vibration or helixes feed equipment are installed on the discharge port of feed bin, the discharge port of vibration or helixes feed equipment is corresponding with material boat, on the ring seal body of heater in reduction nitridation district and de-carbon district, nitrogen inlet and air intlet are installed.Employing annular of the present utility model, subregion continuous producing apparatus, can effectively reduce production costs and the time, the quality of the aluminum nitride powder product that effectively assurance is produced.
Description
Affiliated technical field
The utility model relates to a kind of production unit of aluminum nitride powder, particularly a kind of equipment of continuous production aluminum nitride powder.
Background technology
Aluminium nitride ceramics (AIN pottery), due to good over-all propertieies such as high thermal conductance, low thermal coefficient of expansion and high strength, high anti-corrosion, insulation, low specific inductivity, has become the desirable encapsulation of electronic component and baseplate material, and application prospect is very wide.Other application of aluminium nitride ceramics also comprises the additive of making cutting tool, microwave substrate, AC-battery power source switch substrate, heating tank, laser dipole, the loose head of heating, polymkeric substance and glass etc.In addition, aluminium nitride ceramics has superior anti-molten metal attack ability, is the desirable crucible material of founding pure iron, aluminum and its alloy.The aluminium nitride ceramics of high-purity high-density can be transparent, in field of photoelectric technology, is widely used.
But the AlN that will prepare high comprehensive performance is ceramic, one of key will synthesize the AlN ceramic powder of high purity, fine granularity, narrow particle size distribution, stable performance exactly.As raw material, the purity of aluminium nitride powder, granularity, oxygen level and other foreign matter contents are to the sintering of aluminium nitride ceramics, forming technology, and thermal conductivity has important impact with other performances.
The synthetic method of AlN ceramic powder is a lot, adopt at present maximum main with have: aluminium powder direct nitridation method, carbothermic method, chemical Vapor deposition process, sol-gel method, self propagating high temperature synthesis method and plasma chemical synthesis method.Wherein for industrial direct nitridation method, carbothermic method and the gas-phase reaction method of mainly containing.The preparation method of every kind of aluminium nitride has the merits and demerits of self, and comparatively speaking, carbothermic method, because product purity is high, is shaped good with sintering character, and technique is simple, is convenient to the advantages such as control and takes advantage.At present, on world market, more than 70% A1N ceramics powder adopts this method to produce.Carbothermic method has that raw material sources are wide, price is low, technological process is simple, synthetic powder accounts for the advantage of greater advantage at aspects such as purity, granularity and stability, but the temperature of reaction of carbothermic method is high, long reaction time, in whole preparation process, raw materials cost is lower than 30%, and energy consumption (containing gas consumption) cost will be higher than 70%, in addition, most of carbothermic reduction methods, due to the discontinuity of charging, exist that the production cycle is long, energy consumption is large, efficiency is low, technique is loaded down with trivial details, high in cost of production shortcoming.
Summary of the invention
The purpose of this utility model is that the existing carbothermic method production aluminium nitride powder production cycle of solution is long, energy consumption is large, efficiency is low, technique is loaded down with trivial details, the equipment of a kind of continuous production aluminum nitride powder of high in cost of production defect.
For realizing above-mentioned utility model object, the technical scheme that the utility model adopts is: a kind of equipment of continuous production aluminum nitride powder, comprise rotary bottom type annular graphite resistor furnace and heating unit, on circular orbit in the ring seal body of heater of rotary bottom type annular graphite resistor furnace, material boat is installed, material boat is driven on circular orbit and is moved by power set, the ring seal body of heater that it is characterized in that rotary bottom type annular graphite resistor furnace is divided into reduction nitridation district and de-carbon district, feed bin and inhaling type loading head are installed on the ring seal body of heater between reduction nitridation district and de-carbon district, vibration or helixes feed equipment are installed on the discharge port of feed bin, vibration or helixes feed equipment are connected with ring seal body of heater is airtight with inhaling type loading head, the discharge port of vibration or helixes feed equipment is corresponding with material boat, on the ring seal body of heater in reduction nitridation district and de-carbon district, nitrogen inlet and air intlet are installed.
Discharge port front end at above-mentioned vibration or helixes feed equipment is provided with material scraping plate.
In above-mentioned ring seal body of heater, be provided with vertical baffle.
The circular arc angle in the reduction nitridation district in above-mentioned ring seal body of heater is more than or equal to 180 °, and the circular arc angle in de-carbon district is less than or equal to 90 °, and reduction nitridation district is adjacent with de-carbon district.
The technical solution of the utility model has the following advantages: the one, on the basis of existing straight line pushed bat kiln, improve, change straight line pushed bat kiln into ring seal body of heater, first to have floor space little for ring seal body of heater, after its defective material boat one-step installation, just can use continuously, and without expecting that boat and material together take out, extended the life-span of material boat; The 2nd, by ring seal Proper Design, be reduction nitridation district and de-carbon district, according to reaction needed, in different zones, different working temperatures and reaction atmosphere have been designed, make temperature of reaction more than 1800 ℃, be reduced to 1600-1800 ℃ by present, the pyroreaction time can shorten more than 2 hours.In whole preparation process, energy consumption (containing gas consumption) cost is less than 55%; During three, due to employing Synthesis of AlN Powders by Carbonthermal Reduction Method, the selection of aluminium source and carbon source is very large to the quality influence of aluminum nitride powder product, and first the utility model adopts dry ball to carry out abrasive material, and the granularity that guarantees material by screening is at 3-15 μ m; Next selects spherical gamma-Al
2o
3upper as aluminium source also limits the granularity of carbon black simultaneously, carried out strict restriction like this from raw material, guaranteed the even particle size distribution of finished product aluminum nitride powder; Four, adopt vibration or helixes feed equipment, adopt material scraping plate to limit the material thickness in material boat simultaneously, guaranteed the consistence of all even thickness of material in material boat, be conducive to the carrying out of reaction.
In sum, the technical solution of the utility model adopts annular, subregion continuous production processes and equipment, can effectively reduce production costs and the time, and the quality of the aluminum nitride powder product of producing can effectively guarantee.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of the utility model equipment;
Accompanying drawing 2 is the A-A sectional view of the utility model equipment;
Accompanying drawing 3 is the local expansion schematic diagram of ring seal body of heater in the utility model equipment.
Embodiment
The equipment of a kind of continuous production aluminum nitride powder as shown in Figure 1, 2, 3, in on the furnace bottom 10 of the ring seal body of heater 1 of rotary bottom type annular graphite resistor furnace, heating unit and circular orbit 9 are installed, material boat 2 is installed on circular orbit, and material boat is driven and is moved on circular orbit by power set 8.In the ring seal body of heater of rotary bottom type annular graphite resistor furnace, be divided into reduction nitridation district ⅠHe de-carbon district II, the circular arc angle in reduction nitridation district is more than or equal to 180 °, the circular arc angle in de-carbon district is less than or equal to 90 °, feed bin 4 and inhaling type loading head 5 are installed on the ring seal body of heater between reduction nitridation district and de-carbon district, vibration or helixes feed equipment are installed on the discharge port of feed bin, vibration or helixes feed equipment are connected with ring seal body of heater is airtight with inhaling type loading head, the discharge port of vibration or helixes feed equipment is corresponding with material boat, discharge port front end at vibration or helixes feed equipment is provided with material scraping plate, nitrogen inlet 7 and air intlet 6 are installed on the ring seal body of heater in reduction nitridation district and de-carbon district, for guaranteeing that nitrogen and even air in reduction nitridation district and de-carbon district are full of whole reaction zone, in ring seal body of heater, be provided with vertical baffle 11.
Claims (4)
1. an equipment of producing continuously aluminum nitride powder, comprise rotary bottom type annular graphite resistor furnace and heating unit, on circular orbit in the ring seal body of heater of rotary bottom type annular graphite resistor furnace, material boat is installed, material boat is driven on circular orbit and is moved by power set, the ring seal body of heater (1) that it is characterized in that rotary bottom type annular graphite resistor furnace is divided into reduction nitridation district (I) and de-carbon district (II), feed bin (4) and inhaling type loading head (5) are installed on the ring seal body of heater between reduction nitridation district and de-carbon district, vibration or helixes feed equipment are installed on the discharge port of feed bin, vibration or helixes feed equipment are connected with ring seal body of heater is airtight with inhaling type loading head, the discharge port of vibration or helixes feed equipment is corresponding with material boat (2), nitrogen inlet (7) and air intlet (6) are installed on the ring seal body of heater in reduction nitridation district and de-carbon district.
2. the equipment of a kind of continuous production aluminum nitride powder according to claim 1, is characterized in that being provided with material scraping plate at the discharge port front end of above-mentioned vibration or helixes feed equipment.
3. the equipment of a kind of continuous production aluminum nitride powder according to claim 2, is characterized in that being provided with vertical baffle (11) in above-mentioned ring seal body of heater (1).
4. the equipment of a kind of continuous production aluminum nitride powder according to claim 3, the circular arc angle that it is characterized in that the reduction nitridation district in above-mentioned ring seal body of heater (1) is more than or equal to 180 °, the circular arc angle in de-carbon district is less than or equal to 90 °, and reduction nitridation district is adjacent with de-carbon district.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420324212.0U CN203946896U (en) | 2014-06-18 | 2014-06-18 | A kind of equipment of continuous production aluminum nitride powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420324212.0U CN203946896U (en) | 2014-06-18 | 2014-06-18 | A kind of equipment of continuous production aluminum nitride powder |
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| Publication Number | Publication Date |
|---|---|
| CN203946896U true CN203946896U (en) | 2014-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420324212.0U Withdrawn - After Issue CN203946896U (en) | 2014-06-18 | 2014-06-18 | A kind of equipment of continuous production aluminum nitride powder |
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| CN (1) | CN203946896U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104016316B (en) * | 2014-06-18 | 2016-08-17 | 宁夏艾森达新材料科技有限公司 | A kind of continuous preparation method of aluminum nitride powder and equipment thereof |
| CN116854480A (en) * | 2023-06-26 | 2023-10-10 | 福建华清电子材料科技有限公司 | Method for preparing aluminum nitride powder by carbothermic process |
-
2014
- 2014-06-18 CN CN201420324212.0U patent/CN203946896U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104016316B (en) * | 2014-06-18 | 2016-08-17 | 宁夏艾森达新材料科技有限公司 | A kind of continuous preparation method of aluminum nitride powder and equipment thereof |
| CN116854480A (en) * | 2023-06-26 | 2023-10-10 | 福建华清电子材料科技有限公司 | Method for preparing aluminum nitride powder by carbothermic process |
| CN116854480B (en) * | 2023-06-26 | 2024-03-29 | 福建华清电子材料科技有限公司 | Method for preparing aluminum nitride powder by carbothermic process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141119 Effective date of abandoning: 20160817 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |