JPH06136462A - High-purity aluminum filter device - Google Patents
High-purity aluminum filter deviceInfo
- Publication number
- JPH06136462A JPH06136462A JP4312822A JP31282292A JPH06136462A JP H06136462 A JPH06136462 A JP H06136462A JP 4312822 A JP4312822 A JP 4312822A JP 31282292 A JP31282292 A JP 31282292A JP H06136462 A JPH06136462 A JP H06136462A
- Authority
- JP
- Japan
- Prior art keywords
- hot water
- filtration
- molten
- side shelf
- rack plate
- 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- Withdrawn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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、高純度アルミニウム濾
過装置に関するものである。FIELD OF THE INVENTION The present invention relates to a high-purity aluminum filtration device.
【０００２】[0002]
【従来技術】従来から、アルミニウムの溶湯を濾過する
濾過槽と、該濾過槽内に形成した濾過室と、該濾過室に
至る入湯口と、前記濾過室よりの出湯口と、前記濾過室
内に収納した炭化珪素質耐火物製の入湯側棚板と出湯側
棚板との間にポーラスアルミナ質耐火物で形成した濾過
チューブを上下数段、左右数本掛け渡した濾過ユニット
とを有するアルミニウム濾過装置は公知である。上記炭
化珪素質耐火物とは、炭化珪素の骨材粒子をシリカ系の
無機質結合材により結合させたものである。2. Description of the Related Art Conventionally, a filtration tank for filtering molten aluminum, a filtration chamber formed in the filtration tank, a hot water inlet leading to the filtration chamber, a hot water outlet from the filtration chamber, and a filtration chamber Aluminum filtration having a storage tube made of porous silicon carbide refractory and a filtration unit in which several filtration tubes made of porous alumina refractory are placed between the upper and lower shelves and the left and right sides. Devices are known. The above-mentioned silicon carbide refractory is obtained by binding aggregate particles of silicon carbide with a silica-based inorganic binder.
【０００３】[0003]
【発明が解決しようとする課題】公知のアルミニウム濾
過装置は、缶ビールとか缶ジュースのような飲料アルミ
ニウム缶用のアルミニウムの濾過であれば、充分対応で
きるが、コンピュウターディスクとかレーザーディスク
のような精密製品で、純度が４ナイン（９９．９９％）
級のアルミニウム処理の要求があったときは、要求仕様
を満足させるためには、通常の方法では対応できず、手
間を掛けて製造していた。その原因は、濾過ユニットの
熱膨張に基づく破損による異物混入と、化学的反応によ
る溶湯汚染の両方があった。即ち、従来公知の出入側各
棚板は、いずれも炭化珪素質耐火物で製造されているの
に対して、濾過チューブはポーラスアルミナ質耐火物で
形成されており、炭化珪素質とアルミナ質とでは熱膨張
係数が相違するから、数百度以上に加熱溶融されたアル
ミニウム溶湯を注入して加熱されると、炭化珪素質耐火
物からなる出入湯側棚板の前記濾過チューブ挿着部分に
亀裂を生じ、その亀裂部分を通って濾過されないアルミ
ニウム溶湯が出湯窓に出湯される惧れがあった。また、
炭化珪素質耐火物の棚板は、その骨材粒子が、酸化珪素
（シリカ系）の無機質結合材により結合された構成であ
る。ところが、前記棚板の周囲に入湯したアルミニウム
溶湯は極めて還元力の大きい金属であるから、炭化珪素
質耐火物の酸化珪素が還元されて金属シリコンになって
アルミニウムの溶湯中に溶出し、溶湯を汚染させる。The known aluminum filtration apparatus can sufficiently cope with filtration of aluminum for beverage aluminum cans such as canned beer and canned juice. Precision product with a purity of 4 nines (99.99%)
When there was a demand for grade-aluminum treatment, in order to satisfy the required specifications, it could not be dealt with by the usual method, and it was time-consuming to manufacture. The causes were both contamination of foreign matter due to damage due to thermal expansion of the filtration unit and contamination of molten metal due to chemical reaction. That is, each of the conventionally known shelf boards is made of a silicon carbide refractory material, whereas the filter tube is made of a porous alumina refractory material. However, since the thermal expansion coefficient is different, when aluminum molten metal that has been heated and melted to several hundred degrees or more is poured and heated, cracks occur in the filter tube insertion part of the inlet / outlet side shelf made of silicon carbide refractory. There was a fear that the molten aluminum, which had not been filtered through the cracked portion, was tapped into the tap window. Also,
The shelf plate of the silicon carbide refractory material has a structure in which the aggregate particles are bonded by a silicon oxide (silica-based) inorganic binder. However, since the molten aluminum poured around the shelf plate is a metal having a very large reducing power, the silicon oxide of the silicon carbide refractory is reduced to metallic silicon which is eluted into the molten aluminum to dissolve the molten metal. To pollute.
【０００４】[0004]
【課題を解決するための手段】よって、本発明は、アル
ミニウムの溶湯を濾過する濾過槽１と、該濾過槽１内に
形成した濾過室２と、該濾過室２に至る入湯口７と、前
記濾過室２よりの出湯口８と、前記濾過室２内に収納す
る入湯側棚板４と出湯側棚板５との間にポーラスアルミ
ナ質耐火物で形成した濾過チューブ６を掛け渡した濾過
ユニット３とを有するものにおいて、前記入湯側棚板４
および前記出湯側棚板５は少なくともアルミナ純度８５
％以上のポーラスではないアルミナ質耐火物で形成し、
前記出入湯側棚板４、５と前記濾過チューブ６とはアル
ミナ質の接合モルタルで接合した高純度アルミニウム溶
湯用濾過装置としたものである。Therefore, according to the present invention, a filtration tank 1 for filtering molten aluminum, a filtration chamber 2 formed in the filtration tank 1, and a hot water inlet 7 leading to the filtration chamber 2 are provided. Filtration in which a filtration tube 6 made of a porous alumina refractory is hung between the hot water outlet 8 from the filtration chamber 2 and the hot water side shelf plate 4 and the hot water side shelf plate 5 housed in the filtration chamber 2. In the unit having the unit 3, the hot water side shelf plate 4
And the hot water side shelf 5 has at least 85 alumina purity.
Made of alumina refractory that is not porous above 100%,
The inlet / outlet side shelf plates 4 and 5 and the filtration tube 6 are joined together by an alumina joint mortar to form a high-purity molten aluminum filter.
【０００５】[0005]
【実施例】本発明の一実施例を図面により説明すると、
１はアルミニウムの溶湯を濾過する濾過槽、２は濾過槽
１内に形成される濾過室、３は濾過室２内に収納される
濾過ユニットである。該濾過ユニット３は、耐火物プレ
ートで形成された垂直の入湯側棚板４と出湯側棚板５と
の間にポーラスアルミナ質耐火物で形成された濾過チュ
ーブ６を上下数段、左右数本掛け渡した形状である。An embodiment of the present invention will be described with reference to the drawings.
Reference numeral 1 is a filtration tank for filtering molten aluminum, 2 is a filtration chamber formed in the filtration tank 1, and 3 is a filtration unit housed in the filtration chamber 2. The filtration unit 3 includes several vertical filtration tubes 6 made of a porous alumina refractory between a vertical hot water inlet side shelf plate 4 and a vertical hot water outlet side shelf plate 5, which are formed of refractory plates. It is a crossed shape.
【０００６】前記濾過ユニット３を収納する前記濾過槽
１は、大小種々の構造に形成され、実施例の濾過槽１
は、前記濾過ユニット３を２組並設して収納できる大き
さに形成される。The filtration tank 1 for accommodating the filtration unit 3 is formed in various sizes, and the filtration tank 1 of the embodiment is formed.
Is formed in a size capable of accommodating two sets of the filtering units 3 arranged side by side.
【０００７】７は濾過室２に至る入湯口、８は濾過室２
よりの出湯口、９は濾過室２の出湯側内壁、１０は出湯
側内壁９に形成した出湯窓、１１は濾過室２の入湯側内
壁、１２は入湯側内壁１１に形成した入湯窓であり、前
記濾過ユニット３は、入湯側内壁１１と入湯側棚板４と
の間に楔１３を打ち込んで出湯側内壁９に出湯側棚板５
を押し付ける。Reference numeral 7 is a hot water inlet leading to the filtration chamber 2, and 8 is the filtration chamber 2.
Is a hot water outlet side inner wall of the filtration chamber 2, 10 is a hot water outlet window formed on the hot water outlet side inner wall 9, 11 is a hot water inlet side inner wall of the filtration chamber 2, and 12 is a hot water inlet window formed on the hot water inlet side inner wall 11. In the filtration unit 3, the wedge 13 is driven between the hot water inlet side inner wall 11 and the hot water inlet side shelf plate 4 so that the hot water outlet side shelf plate 5 is attached to the hot water outlet side inner wall 9.
Press.
【０００８】前記濾過槽１は、セラミック製耐火外壁１
４とキャスタブル層１５とレンガ内壁１６との三層構造
とし、外周は薄鉄板１７で包囲してある。１８は濾過槽
１の蓋体であるが、該蓋体１８の下面側にはヒーター１
９を設ける。The filtration tank 1 comprises a ceramic fireproof outer wall 1
4, the castable layer 15 and the brick inner wall 16 have a three-layer structure, and the outer circumference is surrounded by a thin iron plate 17. Reference numeral 18 denotes a lid of the filtration tank 1, and the heater 1 is provided on the lower surface side of the lid 18.
9 is provided.
【０００９】しかして、本発明は、上記において、その
濾過ユニット３の入湯側棚板４と出湯側棚板５を炭化珪
素質耐火物ではなく少なくともアルミナ純度８５％以上
のポーラスではないアルミナ質耐火物で形成し、かつ前
記出入湯側棚板４、５と濾過チューブ６との接合にはア
ルミナ質結合モルタル２０を用いる。Therefore, according to the present invention, in the above, the hot water inlet side shelf plate 4 and the hot water outlet side shelf plate 5 of the filtration unit 3 are not made of silicon carbide refractory but are alumina porous refractory having at least 85% or more of alumina purity. Alumina-bonded mortar 20 is used to bond the outlet / inlet side shelf plates 4 and 5 to the filter tube 6.
【００１０】[0010]
【作用】次に作用を述べる。本発明の実施例の構成は以
上のとおりであるから、濾過槽１内に形成された濾過室
内にリフトを用いて濾過ユニット３を収納し、入湯側内
壁１１と入湯側棚板４との間に楔１３を打ち込んで出湯
側棚板５を出湯側内壁９に押し付け、この状態で蓋体１
８で被せ、蓋体１８の下面側のヒーター１９に通電して
空焚きして濾過ユニット３を予熱し、ヒーター１９に通
電しつつ入湯口７よりアルミニウムの溶湯を入湯させる
と、入湯窓１２より濾過室２内に充満して濾過チューブ
６により濾過され、出湯窓１０より出湯する。[Operation] Next, the operation will be described. Since the configuration of the embodiment of the present invention is as described above, the filtration unit 3 is housed in the filtration chamber formed in the filtration tank 1 by using a lift, and the space between the hot water inlet side inner wall 11 and the hot water side shelf 4 is provided. The wedge 13 is driven into the wall to press the hot water outlet side shelf plate 5 against the hot water outlet side inner wall 9, and in this state the lid 1
8, the heater 19 on the lower surface side of the lid 18 is energized to be heated to preheat the filtration unit 3, and while the heater 19 is energized, the molten metal of aluminum is introduced from the inlet 7 It fills the inside of the filtration chamber 2, is filtered by the filtration tube 6, and is discharged from the discharge window 10.
【００１１】しかして、従前公知の濾過ユニット３の出
入湯側棚板４、５は全て炭化珪素質耐火物で形成され、
これに対して濾過チューブ６は全てポーラスアルミナ質
耐火物で形成されていたため、熱膨張係数の相違によ
り、出入湯側棚板４、５の濾過チューブ６挿着部分に亀
裂を生じ、この亀裂から濾過チューブ６を通らないで直
に出湯窓１０に出湯して異物を混入させることがあっ
た。[0011] Therefore, all the outlet / inlet side shelf plates 4, 5 of the conventionally known filtration unit 3 are made of silicon carbide refractory,
On the other hand, since the filter tubes 6 were all made of a porous alumina refractory, a crack was generated at the insertion portion of the hot and cold water side shelf plates 4, 5 due to the difference in thermal expansion coefficient, and In some cases, the foreign matter was mixed into the hot water outlet window 10 directly without passing through the filtration tube 6.
【００１２】また、炭化珪素質耐火物は、その骨材粒子
を酸化珪素（シリカ系）の無機質結合材により結合され
た構成であるところ、周囲のアルミニウム溶湯は極めて
還元力の大きい金属であるため、成分中の酸化珪素が還
元されて金属シリコンになってアルミニウムの溶湯中に
溶出し溶湯を汚染させることがあった。The silicon carbide refractory has a structure in which the aggregate particles are bonded by an inorganic binder of silicon oxide (silica type). Since the surrounding molten aluminum is a metal having an extremely large reducing power. In some cases, the silicon oxide in the components is reduced to metallic silicon which is eluted into the molten aluminum and contaminates the molten metal.
【００１３】しかるに、本発明は出入湯側棚板４、５を
少なくともアルミナ純度８５％以上のアルミナ質耐火物
で形成したので、前記濾過チューブ６との熱膨張差は解
消されて前記亀裂現象は防止され、また、酸化珪素の還
元作用も生じない。According to the present invention, however, since the hot and cold water side shelves 4 and 5 are made of an alumina refractory material having an alumina purity of at least 85%, the difference in thermal expansion from the filtration tube 6 is eliminated and the cracking phenomenon occurs. It is also prevented, and the reducing action of silicon oxide does not occur.
【００１４】[0014]
【発明の効果】本発明は、アルミニウムの溶湯を濾過す
る濾過槽１と、該濾過槽１内に形成した濾過室２と、該
濾過室２に至る入湯口７と、前記濾過室２よりの出湯口
８と、前記濾過室２内に収納する入湯側棚板４と出湯側
棚板５との間にポーラスアルミナ質耐火物で形成した濾
過チューブ６を掛け渡した濾過ユニット３とを有するも
のにおいて、前記濾過ユニット３の入湯側棚板４と出湯
側棚板５とは少なくともアルミナ純度８５％以上のポー
ラスではないアルミナ質耐火物で形成し、前記出入湯側
棚板４、５と前記濾過チューブ６とはアルミナ質の接合
モルタル２０で接合した高純度アルミニウム溶湯用濾過
装置としたものであるから、入湯側棚板４および出湯側
棚板５と濾過チューブ６との熱膨張係数は同一なので、
加熱されても亀裂は生ぜず、また、出入湯側棚板４、５
および接合モルタル２０もアルミナ質であるので酸化珪
素が還元されて金属シリコンになる現象もみられないか
ら、コンピュウターディスクとかレーザーディスクのよ
うな精密製品で異物混入がなく、純度４ナイン（９９．
９９％）級のアルミニウムでも、簡単に得られる効果が
ある。INDUSTRIAL APPLICABILITY The present invention comprises a filter tank 1 for filtering molten aluminum, a filter chamber 2 formed in the filter tank 1, a hot water inlet 7 reaching the filter chamber 2, and the filter chamber 2. A hot water outlet 8 and a filtration unit 3 having a hot water side shelf plate 4 and a hot water side shelf plate 5 housed in the filtration chamber 2 and a filtration tube 6 formed of a porous alumina refractory material. In, the hot water inlet side shelf plate 4 and the hot water outlet side shelf plate 5 are formed of at least a non-porous alumina refractory material having an alumina purity of 85% or more, and the hot water outlet side and hot water side shelf plates 4 and 5 and the filtration. The tube 6 is a high-purity molten aluminum filtration device joined with an alumina-based joining mortar 20, so that the hot water inlet side shelf plate 4 and the hot water outlet side shelf plate 5 and the filtration tube 6 have the same thermal expansion coefficient. ,
No cracks are generated even when heated, and the hot and cold water side shelf boards 4, 5
Also, since the bonding mortar 20 is also made of alumina, there is no phenomenon that silicon oxide is reduced to metallic silicon, so that precision products such as a computer disk or a laser disk do not contain foreign matter and have a purity of 4 nines (99.
Even 99%) grade aluminum has the effect of being easily obtained.
【図１】 全体の横断平面図。FIG. 1 is an overall cross-sectional plan view.
【図２】 Ａ−Ａ断面図。FIG. 2 is a sectional view taken along line AA.
【図３】 別の実施例図。FIG. 3 is a diagram of another embodiment.
１…濾過槽、２…濾過室、３…濾過ユニット、４…入湯
側棚板、５…出湯側棚板、６…濾過チューブ、７…入湯
口、８…出湯口、９…出湯側内壁、１０…出湯窓、１１
…入湯側内壁、１２…入湯窓、１３…楔、１４…セラミ
ック製耐火外壁、１５…キャスタブル層、１６…レンガ
内壁、１７…薄鉄板、１８…蓋体、１９…ヒーター、２
０…接合モルタル。DESCRIPTION OF SYMBOLS 1 ... Filtration tank, 2 ... Filtration chamber, 3 ... Filtration unit, 4 ... Hot water side shelf plate, 5 ... Hot water side shelf plate, 6 ... Filtration tube, 7 ... Hot water inlet, 8 ... Hot water outlet, 9 ... Hot water side inner wall, 10 ... Bath window, 11
... Hot water side inner wall, 12 ... Hot water window, 13 ... Wedge, 14 ... Ceramic fireproof outer wall, 15 ... Castable layer, 16 ... Brick inner wall, 17 ... Thin iron plate, 18 ... Lid, 19 ... Heater, 2
0 ... Bonding mortar.
Claims (1)
と、該濾過槽１内に形成した濾過室２と、該濾過室２に
至る入湯口７と、前記濾過室２よりの出湯口８と、前記
濾過室２内に収納する入湯側棚板４と出湯側棚板５との
間にポーラスアルミナ質耐火物で形成した濾過チューブ
６を掛け渡した濾過ユニット３とを有するものにおい
て、前記入湯側棚板４および前記出湯側棚板５は少なく
ともアルミナ純度８５％以上のポーラスではないアルミ
ナ質耐火物で形成し、前記出入湯側棚板４、５と前記濾
過チューブ６とはアルミナ質の接合モルタル２０で接合
した高純度アルミニウム溶湯用濾過装置。1. A filter tank 1 for filtering molten aluminum.
A filtration chamber 2 formed in the filtration tank 1, a hot water inlet 7 reaching the filtration chamber 2, a hot water outlet 8 from the filtration chamber 2, and a hot water side shelf plate 4 housed in the filtration chamber 2. And a hot water outlet side shelf plate 5 and a filtration unit 3 in which a filter tube 6 made of a porous alumina refractory is laid, wherein the hot water inlet side shelf plate 4 and the hot water outlet side shelf plate 5 are at least alumina. A high-purity molten-metal filtering device which is made of a non-porous alumina refractory having a purity of 85% or more, and the hot water inlet / outlet side shelf plates 4 and 5 and the filtration tube 6 are bonded by an alumina bonding mortar 20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4312822A JPH06136462A (en) | 1992-10-28 | 1992-10-28 | High-purity aluminum filter device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4312822A JPH06136462A (en) | 1992-10-28 | 1992-10-28 | High-purity aluminum filter device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06136462A true JPH06136462A (en) | 1994-05-17 |
Family
ID=18033841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4312822A Withdrawn JPH06136462A (en) | 1992-10-28 | 1992-10-28 | High-purity aluminum filter device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06136462A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012144314A1 (en) * | 2011-04-22 | 2012-10-26 | 三井金属鉱業株式会社 | Molten metal filtration device |
| US20220134415A1 (en) * | 2019-02-15 | 2022-05-05 | Pyrotek, Inc. | Molten metal filtration box heating apparatus |
-
1992
- 1992-10-28 JP JP4312822A patent/JPH06136462A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012144314A1 (en) * | 2011-04-22 | 2012-10-26 | 三井金属鉱業株式会社 | Molten metal filtration device |
| CN103392017A (en) * | 2011-04-22 | 2013-11-13 | 三井金属矿业株式会社 | Molten metal filtration device |
| KR20140031843A (en) * | 2011-04-22 | 2014-03-13 | 미쓰이 긴조꾸 고교 가부시키가이샤 | Molten metal filtration device |
| CN103392017B (en) * | 2011-04-22 | 2016-05-25 | 三井金属矿业株式会社 | molten metal filter |
| US20220134415A1 (en) * | 2019-02-15 | 2022-05-05 | Pyrotek, Inc. | Molten metal filtration box heating apparatus |
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