JPH054815A - Production of zinc oxide powder - Google Patents
Production of zinc oxide powderInfo
- Publication number
- JPH054815A JPH054815A JP17902691A JP17902691A JPH054815A JP H054815 A JPH054815 A JP H054815A JP 17902691 A JP17902691 A JP 17902691A JP 17902691 A JP17902691 A JP 17902691A JP H054815 A JPH054815 A JP H054815A
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- zinc
- zinc oxide
- oxide powder
- oxidizing
- 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.)
- Withdrawn
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は電気亜鉛、再生亜鉛、亜
鉛メッキドロスなどの亜鉛または亜鉛合金から高純度の
酸化亜鉛粉末の製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing high-purity zinc oxide powder from zinc or zinc alloys such as zinc electroplated zinc, recycled zinc and zinc-plated dross.
【０００２】[0002]
【従来技術とその課題】従来、酸化亜鉛粉末は、例えば
白ペイントや白エナメルなどの塗料用に、工業用ゴムの
加硫促進剤や増量剤に、陶磁器、ガラスなどの副原料と
して多く製品の製造に使用されている。その製造法は、
金属亜鉛を温度９００〜１１００℃に保たれた還元性雰
囲気炉内で加熱溶解して発生する亜鉛蒸気を燃焼室で酸
化させ、生成した酸化亜鉛を冷却し捕集する方法で、特
公昭６０−５５２９号公報、特開昭６３−２５９０３５
号公報など多くの特許公報で紹介されている。これらの
製造方法で得られた酸化亜鉛の品位は高く、前記の特開
昭６３−２５９０３５号公報には酸化亜鉛は９９．１％
の純度のものが得られたと紹介されている。しかしなが
ら、このような今日までの酸化亜鉛粉末の製造方法は、
加熱溶解炉から噴出する亜鉛蒸気を酸化炉で冷却しなが
ら該粉末を捕集する方法であるため、酸化亜鉛粉末が酸
化炉壁面に付着し、堆積して粉末通路を狭め、短時間で
操業停止しなければならない問題があった。2. Description of the Related Art Zinc oxide powder has hitherto been widely used as a vulcanization accelerator and extender for industrial rubber for coating materials such as white paint and white enamel, and as an auxiliary raw material for ceramics and glass. Used in manufacturing. The manufacturing method is
A method of oxidizing zinc vapor generated by heating and melting metallic zinc in a reducing atmosphere furnace kept at a temperature of 900 to 1100 ° C. in a combustion chamber, cooling the produced zinc oxide, and collecting it. 5529, JP-A-63-259035.
It is introduced in many patent publications such as the Japanese publication. The quality of the zinc oxide obtained by these production methods is high, and the zinc oxide is 99.1% in the above-mentioned JP-A-63-259035.
It is said that the product with the purity of was obtained. However, such a manufacturing method of zinc oxide powder to date is as follows.
Since this method collects the zinc vapor ejected from the heating and melting furnace while cooling it in the oxidation furnace, the zinc oxide powder adheres to the oxidation furnace wall surface and accumulates, narrowing the powder passage and stopping the operation in a short time. There was a problem I had to do.
【０００３】[0003]
【課題を解決するための手段】本発明はこのような問題
を解消して長時間安定して操業ができ、しかも高純度の
酸化亜鉛粉末の製造方法を提供するものである。その要
旨は、亜鉛または亜鉛合金を加熱溶解して気化させ噴出
する亜鉛蒸気を、酸化性ガスが炉内壁面に沿って流し温
度９０７℃以上に保たれた酸化炉を通過させながら酸化
させ、冷却し、捕集する酸化亜鉛粉末の製造方法であ
る。DISCLOSURE OF THE INVENTION The present invention solves the above problems and provides a method for producing zinc oxide powder of high purity which can be stably operated for a long time. The gist is to oxidize and cool zinc vapor that is melted by heating and vaporizing zinc or zinc alloy, and then ejecting it while passing through an oxidation furnace in which an oxidizing gas flows along the inner wall of the furnace and the temperature is maintained at 907 ° C or higher. It is a method for producing zinc oxide powder which is then collected.
【０００４】[0004]
【作用】以下、本発明について詳細に説明する。図１
は、本発明を説明するために提示した一実施例で、酸化
亜鉛粉末の製造装置を示す。図において１は加熱溶解炉
で、電気亜鉛、再生亜鉛、亜鉛メッキドロス、電気炉ダ
ストなどの如き亜鉛または亜鉛含有合金２を加熱し溶解
するもので、炉壁に例えば誘導加熱装置３のような熱媒
が設けられている。また、必要によっては加熱溶解炉１
の炉内を還元性雰囲気に保持するための、還元性ガス供
給パイプ（図示せず）が設けられている。４は酸化炉
（燃焼炉）で加熱溶解炉１で気化された亜鉛蒸気に空気
のような酸化性ガスを炉壁内周面から流すもので、加熱
溶解炉１に一体または分割して、該炉１の上部に載置さ
れている。また、酸化炉４の炉壁には、例えば誘導加熱
装置５のような熱媒が設けられている。６および７は加
熱温度制御装置で、それぞれが加熱溶解炉１と酸化炉４
に連接されている。８は捕集機で、酸化炉４の炉口端に
連接して高温度の熱を保有する酸化亜鉛粉末を冷却し捕
集するものでダクト、吸引モーターなどを組み合わせて
構成されている。また酸化炉４に酸化性ガスの空気を導
入する場合は、図示するように、捕集機８の酸化亜鉛粉
末吸引筒９と酸化炉４の炉口壁との間に空気吸引間隙１
０を設けて、酸化炉４と捕集機８を連接してもよい。す
なわち本発明は、加熱溶解炉１で気化され噴出する亜鉛
蒸気を、酸化性ガス雰囲気中でかつ温度９０７℃以上に
保たれた酸化炉４を通過させながら酸化させた後、冷却
し、捕集して酸化亜鉛粉末を製造する。酸化炉４におい
て温度９０７℃以上の高温度域に保つ事によって、亜鉛
蒸気の凝縮を防ぎ、該炉壁面に付着する酸化亜鉛の堆積
を防ぎ、安定な操業が可能となる。図２は酸化炉４の各
炉内温度と酸化亜鉛収集量の関係を示したもので、温度
９０７℃以上に保持する事によって、安定した量の酸化
亜鉛を収集する事が出来る。すなわち、酸化炉４におい
て９０７℃未満の低温度では、亜鉛蒸気の一部が炉壁に
付着して金属亜鉛となる現象を起こし、本発明の目的が
達成できない。上記のような本発明によれば、長時間安
定した操業で、しかも高純度の酸化亜鉛粉末を製造する
事が出来る。The present invention will be described in detail below. Figure 1
1 is an example presented for explaining the present invention, showing an apparatus for producing zinc oxide powder. In the figure, reference numeral 1 is a heating and melting furnace which heats and melts zinc or a zinc-containing alloy 2 such as electric zinc, regenerated zinc, galvanized dross, electric furnace dust and the like. A medium is provided. Also, if necessary, the heating and melting furnace 1
A reducing gas supply pipe (not shown) is provided to maintain the inside of the furnace in a reducing atmosphere. Reference numeral 4 denotes an oxidizing furnace (combustion furnace) for flowing an oxidizing gas such as air to zinc vapor vaporized in the heating and melting furnace 1 from the inner peripheral surface of the furnace wall. It is placed on top of the furnace 1. A heating medium such as the induction heating device 5 is provided on the furnace wall of the oxidation furnace 4. Reference numerals 6 and 7 are heating temperature control devices, which are a heating melting furnace 1 and an oxidation furnace 4, respectively.
Are connected to. Reference numeral 8 denotes a collector, which is connected to the furnace opening end of the oxidation furnace 4 to cool and collect the zinc oxide powder having high temperature heat, and is constituted by combining a duct, a suction motor and the like. When introducing oxidizing gas air into the oxidation furnace 4, an air suction gap 1 is provided between the zinc oxide powder suction cylinder 9 of the collector 8 and the furnace opening wall of the oxidation furnace 4 as shown in the figure.
0 may be provided to connect the oxidation furnace 4 and the collector 8 in series. That is, the present invention oxidizes zinc vapor that is vaporized and ejected in the heating and melting furnace 1 while passing through the oxidizing furnace 4 that is kept at a temperature of 907 ° C. or higher in an oxidizing gas atmosphere, then cools and collects it. To produce zinc oxide powder. By keeping the temperature in the oxidation furnace 4 in the high temperature range of 907 ° C. or higher, the zinc vapor is prevented from condensing, the zinc oxide adhering to the wall surface of the furnace is prevented from depositing, and stable operation becomes possible. FIG. 2 shows the relationship between the temperature inside each furnace of the oxidation furnace 4 and the amount of zinc oxide collected. By keeping the temperature at 907 ° C. or higher, a stable amount of zinc oxide can be collected. That is, at a low temperature of less than 907 ° C. in the oxidation furnace 4, a part of zinc vapor adheres to the furnace wall to become metallic zinc, and the object of the present invention cannot be achieved. According to the present invention as described above, a zinc oxide powder of high purity can be manufactured with stable operation for a long time.
【０００５】[0005]
【実施例】次に、本発明の実施例について説明をする。
本発明は図１に示す装置に原料の亜鉛メッキドロス２０
０ｋｇを装入し、酸化炉内温度９５０℃に保持して酸化
亜鉛を製造した。また比較法に、加熱溶解炉に直接捕集
機を載置した装置に亜鉛メッキドロス２００ｋｇを装入
し、酸化亜鉛を製造した。この時の酸化亜鉛粉末の収集
量と成分組成を表１および表２に示した。この実験結果
から明らかなように本発明法は、比較法よりも多くの酸
化亜鉛粉末の収集量で、得られた酸化亜鉛粉末の組成も
ＪＩＳ Ｋ−１４１０のフランス法３号規格を満足して
いる。EXAMPLES Next, examples of the present invention will be described.
The present invention is based on the apparatus shown in FIG.
0 kg was charged and zinc oxide was manufactured by maintaining the temperature in the oxidation furnace at 950 ° C. Further, in the comparative method, 200 kg of galvanized dross was charged into an apparatus in which a collector was directly placed in a heating and melting furnace to produce zinc oxide. The amount of zinc oxide powder collected and the composition of the components are shown in Tables 1 and 2. As is clear from the experimental results, the method of the present invention has a larger amount of zinc oxide powder collected than the comparative method, and the composition of the obtained zinc oxide powder also satisfies the French method No. 3 standard of JIS K-1410. There is.
【０００６】[0006]
【表１】 [Table 1]
【０００７】[0007]
【表２】 [Table 2]
【図１】本発明を説明するために提示した装置の一実施
例、FIG. 1 shows an embodiment of the device presented to explain the invention,
【図２】酸化炉の各炉内温度と酸化亜鉛収集量との関係
を示す。FIG. 2 shows the relationship between the temperature inside each furnace of the oxidation furnace and the amount of zinc oxide collected.
１ 加熱溶解炉 ２ 亜鉛または亜鉛含有合金 ３,５ 誘導加熱装置 ４ 酸化炉 ６,７ 加熱温度制御装置 ８ 捕集機 ９ 酸化亜鉛粉末吸引筒 １０ 空気吸引間隙 1 Heating / melting furnace 2 Zinc or zinc-containing alloy 3,5 Induction heating device 4 Oxidation furnace 6,7 Heating temperature control device 8 Collector 9 Zinc oxide powder suction cylinder 10 Air suction gap
───────────────────────────────────────────────────── フロントページの続き (72)発明者 野田 直孝 福岡県北九州市戸畑区飛幡町１番１号 新 日本製鐵株式会社八幡製鐵所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Naotaka Noda 1-1 Tobahata-cho, Tobata-ku, Kitakyushu-shi, Fukuoka New Nippon Steel Corporation Yawata Works
Claims (1)
させ噴出する亜鉛蒸気を、酸化性ガスが炉内壁面に沿っ
て流し温度９０７℃以上に保たれた酸化炉を通過させな
がら酸化させ、冷却し、捕集する事を特徴とする酸化亜
鉛粉末の製造方法。Claim: What is claimed is: 1. An oxidizing furnace in which an oxidizing gas is caused to flow along an inner wall surface of a furnace to heat and melt zinc or a zinc alloy to vaporize and eject the steam, and a temperature of 907 ° C. or higher is maintained. A method for producing a zinc oxide powder, which comprises oxidizing while passing it, cooling, and collecting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17902691A JPH054815A (en) | 1991-06-25 | 1991-06-25 | Production of zinc oxide powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17902691A JPH054815A (en) | 1991-06-25 | 1991-06-25 | Production of zinc oxide powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH054815A true JPH054815A (en) | 1993-01-14 |
Family
ID=16058818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17902691A Withdrawn JPH054815A (en) | 1991-06-25 | 1991-06-25 | Production of zinc oxide powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH054815A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010105907A (en) * | 2008-09-30 | 2010-05-13 | Ube Material Industries Ltd | Method and apparatus for producing zinc oxide |
| KR100985676B1 (en) * | 2008-05-28 | 2010-10-05 | 이춘홍 | zinc oxide powder manufacturing apparatus and method |
| KR101043642B1 (en) * | 2009-01-28 | 2011-06-22 | 주식회사 단석산업 | Continuous process for preparing fine particulate zinc oxide, and the apparatus therefor |
| JP2018070881A (en) * | 2016-10-25 | 2018-05-10 | ロッテ アドバンスト マテリアルズ カンパニー リミテッド | Thermoplastic resin composition and molded product manufactured therefrom |
-
1991
- 1991-06-25 JP JP17902691A patent/JPH054815A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100985676B1 (en) * | 2008-05-28 | 2010-10-05 | 이춘홍 | zinc oxide powder manufacturing apparatus and method |
| JP2010105907A (en) * | 2008-09-30 | 2010-05-13 | Ube Material Industries Ltd | Method and apparatus for producing zinc oxide |
| KR101043642B1 (en) * | 2009-01-28 | 2011-06-22 | 주식회사 단석산업 | Continuous process for preparing fine particulate zinc oxide, and the apparatus therefor |
| JP2018070881A (en) * | 2016-10-25 | 2018-05-10 | ロッテ アドバンスト マテリアルズ カンパニー リミテッド | Thermoplastic resin composition and molded product manufactured therefrom |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19980903 |