JPH02284640A - Production of sintered fine ceramics powder - Google Patents
Production of sintered fine ceramics powderInfo
- Publication number
- JPH02284640A JPH02284640A JP1106834A JP10683489A JPH02284640A JP H02284640 A JPH02284640 A JP H02284640A JP 1106834 A JP1106834 A JP 1106834A JP 10683489 A JP10683489 A JP 10683489A JP H02284640 A JPH02284640 A JP H02284640A
- Authority
- JP
- Japan
- Prior art keywords
- fluidized bed
- bed furnace
- laser beam
- furnace
- fine ceramics
- 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
- 239000000843 powder Substances 0.000 title claims abstract description 36
- 239000000919 ceramic Substances 0.000 title claims abstract description 29
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- 238000006555 catalytic reaction Methods 0.000 claims description 3
- 239000012495 reaction gas Substances 0.000 claims description 3
- 238000010304 firing Methods 0.000 claims description 2
- 238000005245 sintering Methods 0.000 claims 2
- 238000009434 installation Methods 0.000 claims 1
- 239000013079 quasicrystal Substances 0.000 claims 1
- 239000002994 raw material Substances 0.000 abstract description 10
- 239000002245 particle Substances 0.000 abstract description 6
- 238000007667 floating Methods 0.000 abstract description 5
- 238000002347 injection Methods 0.000 abstract description 4
- 239000007924 injection Substances 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 2
- 230000001678 irradiating effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 5
- 239000013078 crystal Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000010419 fine particle Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000011031 large-scale manufacturing process Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 101100027969 Caenorhabditis elegans old-1 gene Proteins 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
産Ｔ：、１−の利用分野
本発明は、焼結セラミックス微粉末の製造方法に関する
ものであって高品質の製品が低コスト・で人１へＩｒ産
されため、研磨材ｆ１分野、窯業製造分野に置いて、そ
の利用さオ］る効果は大である８１正米の１支抹ｌ
現在の焼結セラミックス微粉末の製造方法は、未焼結の
セラミックス原料を用途に合せて、焼成炉により低温、
又は、高温度で焼成溶融してその焼結塊を造り、人々の
各段階の粒子の大きさに合ゼた粉砕機に掛けて細粒し、
その細粒を更に＠粉砕機に掛けてミツ０２１位の微粒子
の粉本とする、最後にその微粉末を分級機により、振る
い分けて製酌されるのが通例である、そのＬ程は多大の
装置技術と労力を必要とする割合に５８！逍頃が僅少で
ありコスト高となる。[Detailed Description of the Invention] Field of Application of Industrial Technology: 1- The present invention relates to a method for producing fine sintered ceramic powder, and since a high-quality product can be produced by a single person at a low cost, Its use in the abrasive field and ceramic manufacturing field is very effective.The current manufacturing method of sintered ceramic fine powder uses unsintered ceramic raw materials. Depending on the application, low temperature or
Or, create a sintered lump by firing and melting it at high temperature, and then grind it into fine particles by using a grinder that matches the particle size of each stage.
The fine particles are further passed through a crusher to produce a fine powder with a size of 021.Finally, the fine powder is sorted using a classifier and then made into a cup. 58% of equipment technology and labor required! The amount of time available is small and the cost is high.
発明の目的
本発明により、未焼結のセラミックス微粉末は流動層炉
内に置いて、触媒ガスの反応とｃｏｔしレーザー光線の
照射されるレーザー光線の集束焦点面のり変により、研
磨材料の超高温帯２．５００℃より、窯業用フリット等
の低温帯５００℃まで自由に操作が出来るため、Ｈ’Ｐ
−に焼結セラミックス微捨末となり、流動的にその微粉
末を連ｈｃ製造することが出来る、発明の目的である低
コストで大看生産が可能である。Purpose of the Invention According to the present invention, unsintered ceramic fine powder is placed in a fluidized bed furnace, and the ultra-high temperature zone of the abrasive material is heated by the reaction of the catalyst gas and the change in the focal plane of the laser beam. 2. H'P
- The sintered ceramic is finely pulverized, and the fine powder can be continuously produced in a fluidized manner, which is the object of the invention, and large-scale production at low cost is possible.
発明の構成
発明の目的を達成するための手段として、本発明の未焼
結のセラミックス微粉末の製造方法の基本的な構造を説
明する。高温に耐える炉材を使用して流動層炉を造る、
流動層炉は上層、下層の層とし、その中間接続部にＣＯ
２レーザー光線の集束焦点面の径に合せた、径の熱反応
炉を造る、下層の炉底部外側にレーザー光線の発振器を
設置する、その出射するレーザー光線を透過させるため
下層の炉底部を間口し、尚Ｉつ、その部位に流動層炉を
密閉状態にするためとレーザー光線の透過度が良く、高
温にも耐久力がある、アルミナ川結晶の゛ド面レンズを
可動装着し払拭除塵な可能とする、次にサイクロンへの
導入管に微粉末の流れを＃幣するため流速計をセットし
てセンサーにより排風機を稼動ｉ＃Ｉ御することにより
、微粉末の熱反応炉を一定の速度で通過させ、又下層炉
内に浮遊する焼結された微粉末はレーザー光線を阻害し
、微粉末の品質に悪影響を及ぼすためその透過度を維持
する、尚■つ、炉底外側に送風機を設置して排風機を稼
動制御するセンサーと連動して、炉底内の反応ガス層に
ガスを送り、その上面に多数の穴を開は必１３のガスを
送出して下層炉内をより一層透明にする、従って下層内
に浮遊する微粉末は導入管を通ってサイクロンへ順次蓄
積される上記の製造装置に基いて、未焼結のセラミック
ス微粉末を触媒反応ガスと一緒に噴射口より流動層炉の
下層炉内へ噴Ｈｆｐ、Ｈさせる、ＣＯｚレーザー光線発
振器より出射されるレーザー光線は、上層、下層間の熱
反応炉において集束焦点面の可変により、高温２・５０
０℃より、低温５００’Ｃの設定が自由に操作出来る、
その狭窄された熱反応炉を通過する未焼結のセラミック
ス微粒子は瞬時に、低温又は高温焼結され、尚触媒反応
を起して、焼結されたセラミックス微粒子粉末は流動的
に下層に浮遊する、その浮遊する微粉末は、排風機の吸
引力によりサイクロンへ順次移送され連続製造すること
を可能とした、発明の構成である。Structure of the Invention As a means for achieving the object of the invention, the basic structure of the method for producing fine unsintered ceramic powder of the present invention will be explained. Build a fluidized bed furnace using furnace materials that can withstand high temperatures.
A fluidized bed furnace has an upper layer and a lower layer, and CO is added to the intermediate connection.
2. Build a thermal reactor with a diameter that matches the diameter of the focal plane of the laser beam, install a laser beam oscillator outside the bottom of the bottom of the furnace, open the bottom of the bottom of the bottom of the furnace to allow the emitted laser beam to pass through, and First, in order to keep the fluidized bed furnace in a sealed state, an alumina river crystal double-sided lens, which has good laser beam penetration and is durable against high temperatures, is movably attached to the area, making it possible to wipe and remove dust. Next, a current meter is set to direct the flow of fine powder into the inlet pipe to the cyclone, and the sensor controls the operation of the exhaust fan, allowing the fine powder to pass through the thermal reactor at a constant speed. In addition, the sintered fine powder floating in the lower furnace obstructs the laser beam and has a negative effect on the quality of the fine powder, so it is necessary to maintain its transparency and exhaust it by installing a blower outside the bottom of the furnace. In conjunction with the sensor that controls the operation of the wind fan, gas is sent to the reactive gas layer in the bottom of the furnace, and numerous holes must be opened on the top surface to send out 13 gases, making the inside of the lower furnace even more transparent. Therefore, the fine powder suspended in the lower layer passes through the inlet pipe and is accumulated in the cyclone. Based on the above manufacturing equipment, the unsintered ceramic fine powder is sent together with the catalytic reaction gas from the injection port into the lower layer of the fluidized bed furnace. The laser beam emitted from the COz laser beam oscillator, which injects Hfp and H into the furnace, has a high temperature of 2.5
You can freely set the temperature from 0℃ to 500'C.
Unsintered ceramic particles passing through the constricted thermal reactor are instantaneously sintered at low or high temperatures, and a catalytic reaction occurs, causing the sintered ceramic particles to float fluidly in the lower layer. This is the structure of the invention that allows the floating fine powder to be sequentially transferred to a cyclone by the suction force of an exhaust fan, making continuous production possible.
発明の効果
従来、焼結セラミックス微粉末の製造方法は、多大の装
置技術と労力を必要としたが、本発明により、未焼結の
セラミックス微粉末原料を流動層炉内に浮遊させ、ＣＯ
ｔレーザー光線の照射により微α子は瞬時に焼結され、
流動的に焼結セラミックス微粉末が連続製造されるので
、低コストで大型生産が出来る、窯業・研磨業界におい
て大いに活用される発明である。Effects of the Invention Conventionally, the method for producing sintered ceramic fine powder required a great deal of equipment technology and labor, but with the present invention, unsintered ceramic fine powder raw material is suspended in a fluidized bed furnace, and CO
Micro alpha particles are instantly sintered by irradiation with laser beam,
Since sintered ceramic fine powder is continuously manufactured in a fluid manner, large-scale production can be performed at low cost, and this invention is widely used in the ceramics and polishing industries.
実施例
本発明の焼結セラミックス微粉末の５８！遣方法の実施
例を、図面の第１図の流動層炉を９照しながら説明する
。Example 58 of the sintered ceramic fine powder of the present invention! An embodiment of the method will be described with reference to the fluidized bed furnace shown in FIG. 1 of the drawings.
本発明の焼結セラミックス微粉末の５１２造装置である
、流＃ｊ層炉に未焼結フリット粉本原料（粒度３０ミク
ロン以下）を空気圧により毎分３００ｇを噴射口４を通
して炉内上層部ｌへ噴射ｃ７遊せしめる、その浮遊した
未焼結フリット微粉末原料は熱反応炉３を降下する時点
で、下層２の外側に２Ｋ Ｗ ＣＯ＊レーザー光線発振
器１０をセットして炉底部【」部８のｆ面しンズ！２を
透過して、レーザー光線１５の集束焦点面１６の径５０
．．に合わせて直径５０６．の熱反応炉３に対してレザ
ー光線１５を照射する、その面の設定温度１４はフリッ
ト溶融温度ｌ・３００℃とした、レーザー光線に粉末の
微粒子側々は完全に捕捉されて瞬時に焼結フリ・ｌト微
扮本となり、下層部２に降下浮遊する、その微粉末の滞
留濃度が高く成ると、レーザー光線１５の透過度悪化し
、又原料粉本の熱反応炉３の降下速度も不安定となるた
め導入管７に流速計５をセー／トシて炉内の流速が一定
に成るように排風ｎ９稼動制膚する、尚Ｈつ下層２内の
透過度をより一層高めるために炉底の送風機１３を１１
風磯９の稼動制御するセンサーに連動させて、反応ガス
層１１へ清浄空気を炉内へ送入することより、）’Ｉ［
２内に浮遊する微粉末は導入管７を絆で流動的にサイク
ロン６へ移送蓄積され、焼結セラミックス微８）木を連
続製造することが出来た。The unsintered frit powder main raw material (particle size of 30 microns or less) is fed into the flow #j bed furnace, which is the sintered ceramic fine powder manufacturing device of the present invention, at a rate of 300 g per minute by air pressure through the injection port 4 into the upper layer l of the furnace. When the floating unsintered frit fine powder raw material which is injected into C7 floats down the thermal reactor 3, a 2K W CO* laser beam oscillator 10 is set outside of the lower layer 2 and F-face Shins! 2, the diameter 50 of the focal plane 16 of the laser beam 15
．． ．． Diameter 506. A laser beam 15 is irradiated onto the thermal reactor 3, and the set temperature 14 on that surface is set to the frit melting temperature l·300°C.The laser beam completely captures the fine particles of the powder and instantly sinters the frit.・If the concentration of the fine powder that remains in the lower layer 2 becomes high, the transmittance of the laser beam 15 will deteriorate, and the rate of descent of the raw material powder in the thermal reactor 3 will become unstable. Therefore, a current meter 5 is installed in the inlet pipe 7 to control the operation of the exhaust air n9 so that the flow velocity inside the furnace is constant. blower 13 to 11
)'I[
The fine powder floating in 2 was fluidly transferred to the cyclone 6 through the introduction pipe 7 and accumulated therein, making it possible to continuously produce sintered ceramic fine 8) wood.
第一図は本発明の実施例を示−ｆ焼結セラミックス微粉
末の製造装置である。
ｌ−流動層炉の上層、２−流ｖｊ層炉のＦ層、３・−熱
反応炉、４−原料微粉末噴射（ｊ、５−・流速計、６・
−サイクロン、７・−導入管、８・−炉底開口部、９・
−排風機、１０−レイザー光線９．振器、１１−・反応
ガス層、１２−’Ｆ−曲レンズ、１３・−送風機、■４
−温度計、１５・−レイザー光線、１６−レイザー光線
集束焦点面、
第二図は流動層炉の下層炉底部を１−より見た゛「面図
である。
１・−炉底間［１部、２・−送風管、３−反応ガス層か
らＦ層内の噴出口５４−下層炉壁、
第３図はアルミナ単結晶７面レンズの平面図である。
［−ｌ＜面レンズ、２−炉底開口部の位置、３−レンズ
のシャフト穴。
第４図はアルミナ単結晶７面レンズの側面図である。
ｌ・−ゝＹ、而レ面ズ、２−炉底開口部の位置、３−レ
１ンズのシャフト、４−プーリー１５−・レーザー光線
、
出 願 人 古 １） 成 ２才２
１力
［
＋３１附FIG. 1 shows an embodiment of the present invention - an apparatus for producing fine sintered ceramic powder. 1- Upper layer of fluidized bed furnace, 2-F layer of flow vj bed furnace, 3--thermal reactor, 4- raw material fine powder injection (j, 5- current meter, 6-
-Cyclone, 7.-Introduction pipe, 8.-Furnace bottom opening, 9.
- Exhaust fan, 10- Laser beam9. Shaker, 11--Reactive gas layer, 12-'F-curved lens, 13--Blower, ■4
- Thermometer, 15 - Laser beam, 16 - Laser beam focusing focal plane, Figure 2 is a plan view of the lower furnace bottom of the fluidized bed reactor as viewed from 1. , 2.-Blast pipe, 3. Ejection port 54 in F layer from reaction gas layer-Lower furnace wall, FIG. 3 is a plan view of an alumina single crystal seven-sided lens. [-l<plane lens, 2- The position of the furnace bottom opening, 3- The shaft hole of the lens. Figure 4 is a side view of the alumina single crystal seven-sided lens. 3- Lens shaft, 4- Pulley 15- Laser beam, Applicant Old 1) Age 2 years old 2
1 power [ +31 attached
Claims (1)
雰囲気内に置いて、流動的に未焼結のセラミックス微粉
末を焼結することを特徴とした焼結セラミックス微粉末
の製造方法。 ２）流動層炉の未焼結のセラミックス微粉末の焼成する
熱源は、ＣＯ＿２レーザー光線を照射することを特徴と
した、焼結セラミックス微粉末の製造方法。 ３）流動層炉内の高温雰囲気をつくる、ＣＯ＿２レーザ
ー光線の照射は、流動層炉底外側に、レーザー光発振器
を設置し、その出射するレーザー光線を炉内に透過させ
るため開孔し、その部位にアルミナ準結晶の平面レンズ
を可動装着して流動層炉を密閉状態することを特徴とし
た、流動層炉である。 ４）流動層炉内に噴霧浮遊している、未焼結のセラミッ
クス微粉末をＣＯ＿２レーザー光線で完全捕捉して照射
するために、流動層炉を上層、下層の二層とし、その中
間にＣＯ＿２レーザー光線の集束焦点面の径に合せた、
径の熱反応層を設置することを特徴とした、流動層炉で
ある。[Claims] 1) Sintering characterized by sintering unsintered fine ceramic powder fluidly by using a fluidized bed furnace and placing it in a low-temperature or high-temperature catalytic reaction gas atmosphere. A method for producing ceramic fine powder. 2) A method for producing sintered ceramic fine powder, characterized in that the heat source for firing the unsintered ceramic fine powder in a fluidized bed furnace is irradiation with a CO_2 laser beam. 3) To irradiate the CO_2 laser beam that creates a high-temperature atmosphere inside the fluidized bed furnace, a laser beam oscillator is installed outside the bottom of the fluidized bed furnace, and a hole is opened to transmit the emitted laser beam into the furnace. This fluidized bed furnace is characterized by a movable alumina quasicrystal plane lens that seals the fluidized bed furnace. 4) In order to completely capture and irradiate the unsintered fine ceramic powder sprayed and suspended in the fluidized bed furnace with the CO_2 laser beam, the fluidized bed furnace has two layers, an upper layer and a lower layer, and the CO_2 laser beam is placed in the middle. Matched to the diameter of the focal plane of
This is a fluidized bed furnace characterized by the installation of a thermal reaction bed of approximately 300 mm in diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1106834A JPH02284640A (en) | 1989-04-26 | 1989-04-26 | Production of sintered fine ceramics powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1106834A JPH02284640A (en) | 1989-04-26 | 1989-04-26 | Production of sintered fine ceramics powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02284640A true JPH02284640A (en) | 1990-11-22 |
Family
ID=14443756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1106834A Pending JPH02284640A (en) | 1989-04-26 | 1989-04-26 | Production of sintered fine ceramics powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02284640A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1092470A1 (en) * | 1999-10-11 | 2001-04-18 | Foseco International Limited | Sintering of powder particles into granules |
| WO2011147866A1 (en) * | 2010-05-27 | 2011-12-01 | Heraeus Quarzglas Gmbh & Co. Kg | Method for producing quartz glass granules |
-
1989
- 1989-04-26 JP JP1106834A patent/JPH02284640A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1092470A1 (en) * | 1999-10-11 | 2001-04-18 | Foseco International Limited | Sintering of powder particles into granules |
| WO2001026795A1 (en) * | 1999-10-11 | 2001-04-19 | Foseco International Limited | Sintering of powder particles into granules |
| WO2011147866A1 (en) * | 2010-05-27 | 2011-12-01 | Heraeus Quarzglas Gmbh & Co. Kg | Method for producing quartz glass granules |
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