JPH059076Y2 - - Google Patents
Info
- Publication number
- JPH059076Y2 JPH059076Y2 JP1697787U JP1697787U JPH059076Y2 JP H059076 Y2 JPH059076 Y2 JP H059076Y2 JP 1697787 U JP1697787 U JP 1697787U JP 1697787 U JP1697787 U JP 1697787U JP H059076 Y2 JPH059076 Y2 JP H059076Y2
- Authority
- JP
- Japan
- Prior art keywords
- melting tank
- metal
- forming tube
- gas
- fine particles
- 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.)
- Expired - Lifetime
Links
- 239000002184 metal Substances 0.000 claims description 40
- 229910052751 metal Inorganic materials 0.000 claims description 39
- 238000002844 melting Methods 0.000 claims description 30
- 230000008018 melting Effects 0.000 claims description 30
- 239000010419 fine particle Substances 0.000 claims description 19
- 150000004706 metal oxides Chemical class 0.000 claims description 19
- 229910044991 metal oxide Inorganic materials 0.000 claims description 17
- 150000002739 metals Chemical class 0.000 claims description 6
- 239000007789 gas Substances 0.000 description 19
- 239000002245 particle Substances 0.000 description 19
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 8
- 239000011787 zinc oxide Substances 0.000 description 4
- 229910001111 Fine metal Inorganic materials 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 239000002923 metal particle Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 229910000953 kanthal Inorganic materials 0.000 description 1
- 229910001120 nichrome Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 108091008695 photoreceptors Proteins 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 239000011669 selenium Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Oxygen, Ozone, And Oxides In General (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は金属及び金属酸化物の微粒子製造装置
に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an apparatus for producing fine particles of metals and metal oxides.
静電感光体や電子部品の原料の一つとして金属
や金属酸化物微粒子が使用されている。従来、酸
化亜鉛微粒子の製造装置としては金属亜鉛蒸気発
生装置で亜鉛蒸気を作り、空気を供給しつつある
燃焼室にこの蒸気をノズルから噴霧して燃焼せし
めて酸化亜鉛微粒子を生成し、生成した酸化亜鉛
微粒子を長さ数十メートルの煙道中に導き冷却し
た後補集するいわゆるフランス法による装置があ
る。この装置で得られた酸化亜鉛粒子は大きさ、
形状が不揃いの塊粒状の集合体で均質でない。又
本出願人が実開昭61−159335号公報により開示し
た装置は、密閉槽で金属蒸気を作り、密閉槽内に
不活性ガスを送入して密閉槽の上部に設けた細孔
から金属蒸気を噴出せしめると共に、その周囲か
ら酸化性ガスを供給して金属酸化物微粒子を生成
し、生成した金属酸化物微粒子を冷却用ガスで急
冷するものである。しかしながらこの装置では、
金属蒸気を噴出せしめる噴出孔に、金属酸化物微
粒子の一部が焼結して固着し、燃焼効率の低下及
び金属酸化物微粒子の品質劣化を招くので、その
固着物を除去する必要が生じ、又その除去の際に
熔融金属表面に固着物が落下し、熔融金属表面を
覆い、金属蒸気の発生を阻害する問題があつた。
Metal and metal oxide fine particles are used as one of the raw materials for electrostatic photoreceptors and electronic components. Conventionally, zinc oxide fine particles were produced using a metal zinc steam generator to generate zinc vapor, which was then sprayed from a nozzle into a combustion chamber that was being supplied with air and burned to produce zinc oxide fine particles. There is a device based on the so-called French method in which fine zinc oxide particles are introduced into a flue several tens of meters long, cooled, and then collected. The zinc oxide particles obtained with this device have a size of
It is a lump-like aggregate with irregular shape and is not homogeneous. In addition, the apparatus disclosed by the present applicant in Japanese Utility Model Application Publication No. 159335/1980 produces metal vapor in a closed tank, injects an inert gas into the closed tank, and releases the metal vapor through a pore provided in the upper part of the closed tank. In this method, steam is ejected and oxidizing gas is supplied from the surrounding area to generate metal oxide fine particles, and the generated metal oxide fine particles are rapidly cooled with a cooling gas. However, with this device,
Some of the metal oxide fine particles sinter and stick to the nozzle that blows out the metal vapor, causing a reduction in combustion efficiency and quality deterioration of the metal oxide fine particles, so it is necessary to remove the stuck particles. Further, there was a problem in that during the removal, adhered substances fell onto the surface of the molten metal, covering the surface of the molten metal and inhibiting the generation of metal vapor.
本考案は、上記の問題を解決し、金属酸化物微
粒子の金属蒸気の取り出し口付近への固着や、熔
融金属表面への落下を生ぜず、効率良く微細で且
つ形状、大きさが一様な金属及び金属酸化物微粒
子を製造しうる装置を提供することを目的とする
ものである。
The present invention solves the above problems, prevents metal oxide fine particles from sticking near the metal vapor outlet or falling onto the molten metal surface, and efficiently produces fine metal oxide particles with uniform shape and size. The object of the present invention is to provide an apparatus capable of producing metal and metal oxide fine particles.
本考案はこの目的を達する為に、密閉しうる熔
融槽と、該熔融槽の底部から内部に突出し該熔融
槽の内外を連通しうるように形成された微粒子形
成管と、該微粒子形成管内にガスを吹き込みうる
よう前記熔融槽に設けたガス供給路とを有する金
属及び金属酸化物の微粒子製造装置を構成したこ
とにある。
In order to achieve this object, the present invention includes a melting tank that can be sealed, a particle forming tube that protrudes from the bottom of the melting tank to the inside and communicates between the inside and outside of the melting tank, and The present invention provides an apparatus for producing fine particles of metals and metal oxides, which has a gas supply path provided in the melting tank so that gas can be blown into the melting tank.
本考案装置で原料として用いる金属としては加
熱によつて蒸気化しうるものであれば何でも良い
が、亜鉛、カドミウム、セレン、テルル等の低融
点で蒸気圧の大きい金属が好ましい。 The metal used as a raw material in the apparatus of the present invention may be any metal as long as it can be vaporized by heating, but metals with a low melting point and high vapor pressure, such as zinc, cadmium, selenium, and tellurium, are preferable.
吹き込みガスとしては金属微粒子を製造する場
合では、アルゴン、窒素、ヘリウム等の不活性ガ
スが金属酸化物微粒子を製造する場合には、空
気、酸素、オゾン等の酸化性ガスが用いられる。 The blown gas used is an inert gas such as argon, nitrogen, or helium when producing fine metal particles, or an oxidizing gas such as air, oxygen, or ozone when producing fine metal oxide particles.
熔融槽は熔融金属に腐食されない耐熱材料、例
えば、黒鉛、アルミナ、炭化ケイ素、石英等のセ
ラミツクで構成され、内部から金属蒸気が外部に
漏れないようにできるものであれば良い。 The melting tank may be made of a heat-resistant material that is not corroded by molten metal, such as ceramic such as graphite, alumina, silicon carbide, quartz, etc., and can prevent metal vapor from leaking from the inside to the outside.
本案装置を図に示した一実施例について説明す
る。
An embodiment of the present invention shown in the drawings will be described.
１は黒鉛で有底円筒状に形成された熔融槽であ
る。熔融槽１の開口には同材質の蓋２が設けら
れ、内部空間８を外部に対して密閉できるように
なつている。熔融槽１の底部には内部空間８に底
部から円錐状に突出し、内外を連通しえるように
微粒子形成管３が一体に形成されている。微粒子
形成管３の熔融槽内の内端３ａが端部にゆくに従
い次第に拡径したラツパ状になつており、内部は
そこから外部に行くに従つて拡径した円錐状とな
つている。そして微粒子形成管３の外周と熔融槽
周壁との間に熔融金属を溜めその上部の内部空間
８に金属蒸気を生成せしめるようにしてある。蓋
２には蓋２を貫通してガス供給路４が微粒子形成
管３に対向し微粒子形成管３と同一中心線上に形
成してある。蓋２には熔融槽１と同じ材料か銅、
鉄等の金属管からなるガス供給管５がガス供給路
４と連通させて取り付けられている。このガス供
給管５は微粒子形成管３内面との間に間隙を有し
て微粒子形成管３内まで挿入してもよい。微粒子
形成管３も図では熔融槽１の底から立ち立つた状
態に形成してあるが、熔融槽１と同材質で形成し
た管を底部に貫通して一体に設けても良い。熔融
槽１を囲んで加熱炉６が形成してあり、加熱炉６
の内周壁にはシリコニツト棒、タングステン線、
カンタル線、ニクロム線などからなる発熱体７が
設けてある。加熱炉６の炉蓋６ａを貫通してガス
供給管５が外部に延長している。炉蓋６ａ及び蓋
２を貫通して熔融槽１の底部に熱電対９が挿入し
てある。加熱炉６の微粒子形成管３の開口に対応
する部分は開口してあり図示していない冷却装置
が連設してある。熔融槽１を導電性材料で形成し
高周波加熱を利用してもよい。本案装置はバツチ
式の他、外部から熔融金属をポンプで送り込む連
続式とすることもできる。 1 is a melting tank made of graphite and formed into a cylindrical shape with a bottom. A lid 2 made of the same material is provided at the opening of the melting tank 1, so that the internal space 8 can be sealed from the outside. A particle forming tube 3 is integrally formed at the bottom of the melting tank 1 so as to protrude conically from the bottom into the internal space 8 and communicate between the inside and outside. The inner end 3a of the fine particle forming tube 3 in the melting tank has a tapered shape whose diameter gradually increases toward the end, and the inside has a conical shape whose diameter increases from there toward the outside. The molten metal is stored between the outer periphery of the particle forming tube 3 and the peripheral wall of the melting tank, and metal vapor is generated in the internal space 8 above the molten metal. A gas supply path 4 is formed in the lid 2 so as to pass through the lid 2, facing the particle forming tube 3, and on the same center line as the particle forming tube 3. The lid 2 is made of the same material as the melting tank 1 or copper.
A gas supply pipe 5 made of a metal pipe such as iron is installed in communication with the gas supply path 4 . This gas supply pipe 5 may be inserted into the particle forming tube 3 with a gap provided between it and the inner surface of the particle forming tube 3. Although the fine particle forming tube 3 is also shown standing up from the bottom of the melting tank 1 in the figure, a tube made of the same material as the melting tank 1 may be integrally provided by penetrating the bottom. A heating furnace 6 is formed surrounding the melting tank 1.
The inner peripheral wall is made of silicone rods, tungsten wire,
A heating element 7 made of Kanthal wire, nichrome wire, etc. is provided. A gas supply pipe 5 extends outside through a furnace lid 6a of the heating furnace 6. A thermocouple 9 is inserted into the bottom of the melting tank 1 through the furnace lid 6a and the lid 2. A portion of the heating furnace 6 corresponding to the opening of the fine particle forming tube 3 is open, and a cooling device (not shown) is connected thereto. The melting tank 1 may be made of a conductive material and high frequency heating may be used. The present device can be of a batch type or a continuous type in which molten metal is pumped in from the outside.
熔融槽１内に金属を挿入して加熱し熔融して熔
融金属上方の内部空間８に金属蒸気を生成せし
め、ガス供給管５にガスを供給しガス供給路４か
ら微粒子形成管３に向つてガスを吹き込むと、微
粒子形成管３を通つて熔融槽１の外にガスが通過
するとき、内部空間８から金属蒸気を引き出す。
吹き込みガスが不活性ガスであれば、金属蒸気は
そのまゝ冷却装置に入つて金属微粒子となり、吹
き込みガスが酸化性ガスであれば、金属酸化物微
粒子を微粒子形成管３内で形成しつつ冷却装置に
入る。金属蒸気が微粒子形成管３に吸引され排出
されることにより、内部空間８は負圧となつて熔
融金属の気化が促進され、金属の蒸気化を効率良
く行なうことができる。金属蒸気の熔融槽外への
出口が熔融槽１内に位置するため、微粒子形成管
の熔融槽１内の部分は熔融金属や金属蒸気とほぼ
同じ温度となり、微粒子形成管３の内端３ａや微
粒子形成管３内に固化金属や金属酸化物が固着す
ることがない。又金属蒸気をすぐに固相である微
粒子とできるので、微細で均一な粒子を製造でき
る。
Metal is inserted into the melting tank 1 and heated and melted to generate metal vapor in the internal space 8 above the molten metal, and gas is supplied to the gas supply pipe 5 and directed from the gas supply path 4 to the particle forming pipe 3. Blowing the gas draws metal vapor from the interior space 8 as it passes through the particulate forming tube 3 and out of the melting vessel 1 .
If the blown gas is an inert gas, the metal vapor enters the cooling device as it is and becomes metal particles, and if the blown gas is an oxidizing gas, it cools while forming metal oxide particles in the particle forming tube 3. Enter the device. As the metal vapor is sucked into the particle forming tube 3 and discharged, the internal space 8 becomes a negative pressure, and the vaporization of the molten metal is promoted, allowing efficient vaporization of the metal. Since the outlet of the metal vapor to the outside of the melting tank is located inside the melting tank 1, the part of the particulate forming tube inside the melting tank 1 has almost the same temperature as the molten metal and metal vapor, and the inner end 3a of the particulate forming tube 3 and Solidified metals and metal oxides do not stick inside the particle forming tube 3. Furthermore, since the metal vapor can be immediately turned into solid phase fine particles, fine and uniform particles can be produced.
本考案によれば均一な金属又は金属酸化物微粒
子を効率良く生産しうると共に、熔融金属表面を
金属酸化物で覆つたり、微粒子形成管３の内端３
ａや微粒子形成管３内に金属又は金属酸化物が固
着することのない装置を提供できる。
According to the present invention, uniform metal or metal oxide fine particles can be efficiently produced, and the surface of the molten metal can be covered with metal oxide, and the inner end of the fine particle forming tube 3 can be coated with metal oxide.
It is possible to provide an apparatus in which metals or metal oxides do not stick to the inside of the particulate forming tube 3 or the particulate forming tube 3.
図は本考案による装置の一実施例の断面図であ
る。
１……熔融槽、２……蓋、３……微粒子形成
管、３ａ……内端、４……ガス供給路、５……ガ
ス供給管、６……加熱炉、６ａ……炉蓋、７……
発熱体、８……内部空間、９……熱電対。
The figure is a sectional view of an embodiment of the device according to the invention. DESCRIPTION OF SYMBOLS 1... Melting tank, 2... Lid, 3... Particle formation tube, 3a... Inner end, 4... Gas supply path, 5... Gas supply pipe, 6... Heating furnace, 6a... Furnace lid, 7...
Heating element, 8...Inner space, 9...Thermocouple.
Claims (1)
部に突出し該熔融槽の内外を連通しうるように
形成された微粒子形成管と、該微粒子形成管内
にガスを吹き込みうるように前記熔融槽に設け
たガス供給路とを有する金属及び金属酸化物の
微粒子製造装置。 (2) 微粒子形成管の熔融槽内端が端にゆくに従い
次第に拡径し又内部が該部分より熔融槽の底部
にゆくに従つて次第に拡径している実用新案登
録請求の範囲(1)項に記載の金属及び金属酸化物
の微粒子製造装置。[Scope of Claim for Utility Model Registration] (1) A sealable melting tank, a particulate forming tube that protrudes from the bottom of the melting tank and is formed so as to communicate between the inside and outside of the melting tank, and the inside of the particulate forming pipe. and a gas supply path provided in the melting tank so that gas can be blown into the melting tank. (2) The scope of the utility model registration claim (1) in which the inner end of the fine particle forming tube gradually expands in diameter as it goes to the end, and the diameter of the inside gradually increases as it goes from this part to the bottom of the melting tank. The apparatus for producing fine particles of metals and metal oxides as described in 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1697787U JPH059076Y2 (en) | 1987-02-06 | 1987-02-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1697787U JPH059076Y2 (en) | 1987-02-06 | 1987-02-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63126028U JPS63126028U (en) | 1988-08-17 |
| JPH059076Y2 true JPH059076Y2 (en) | 1993-03-05 |
Family
ID=30809323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1697787U Expired - Lifetime JPH059076Y2 (en) | 1987-02-06 | 1987-02-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH059076Y2 (en) |
-
1987
- 1987-02-06 JP JP1697787U patent/JPH059076Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63126028U (en) | 1988-08-17 |
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