JPH07243772A - Setter and manufacture thereof - Google Patents

Setter and manufacture thereof

Info

Publication number
JPH07243772A
JPH07243772A JP6031569A JP3156994A JPH07243772A JP H07243772 A JPH07243772 A JP H07243772A JP 6031569 A JP6031569 A JP 6031569A JP 3156994 A JP3156994 A JP 3156994A JP H07243772 A JPH07243772 A JP H07243772A
Authority
JP
Japan
Prior art keywords
setter
cordierite
binder
aggregate
purity
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.)
Granted
Application number
JP6031569A
Other languages
Japanese (ja)
Other versions
JP3382702B2 (en
Inventor
Osamu Yamakawa
治 山川
Hiroaki Nihonmatsu
浩明 二本松
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NGK Insulators Ltd
NGK Adrec Co Ltd
Original Assignee
NGK Insulators Ltd
NGK Adrec Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NGK Insulators Ltd, NGK Adrec Co Ltd filed Critical NGK Insulators Ltd
Priority to JP03156994A priority Critical patent/JP3382702B2/en
Publication of JPH07243772A publication Critical patent/JPH07243772A/en
Application granted granted Critical
Publication of JP3382702B2 publication Critical patent/JP3382702B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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  • Compositions Of Oxide Ceramics (AREA)
  • Furnace Charging Or Discharging (AREA)

Abstract

PURPOSE:To prevent the generation of omission of grains in a product due to reaction between impurities in a setter and a baked product during the baking of the baked product by specifying the purity of cordierite so as to be a specified value, in the setter containing cordierite as aggregate and/or binder. CONSTITUTION:A setter contains cordierite as aggregate and/or binder and the purity of the cordierite is specified so as to be higher than 95%. In this case, the setter contains a material, changed into cordierite upon baking and effecting as binder, whereby the setter is used for a rotary hearth kiln. The setter is manufactured by a method wherein as the material of aggregate the cordierite, whose purity is higher than 95%, is mixed with binder and formed and an obtained form is baked. According to this method, the remaining strength of the setter is high and, therefore, cracks will hardly be generated in the setter while very little impurities are contained in the setter and, therefore, reaction and adhesion between tiles or reaction and adhesion between a rotor will never be generated.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】 本発明はセッターとその製造方
法に関し、さらに詳しくは、原料粉粒体に高純度のコー
ジェライトを使用することによって、セッターの耐火度
を低下させることなく焼成品中に不純物の混入すること
を防止し、高品質の焼成品を得ることができるセッター
とその製造方法に関する。本セッターは、タイル等の焼
成用として好適に使用されているローラーハースキルン
用に特に適している。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a setter and a method for producing the same, and more specifically, by using a high-purity cordierite as a raw material powder or granular material, it can be used in a fired product without lowering the fire resistance of the setter. The present invention relates to a setter that can prevent impurities from being mixed in and can obtain a high-quality fired product, and a manufacturing method thereof. The present setter is particularly suitable for a roller hearth kiln that is preferably used for firing tiles and the like.

【0002】[0002]

【従来の技術】 近年、タイル等の焼成時においては、
省エネルギー、生産性の向上等の観点から、ローラーハ
ースキルンが使用され、焼成の迅速化、短時間化が図ら
れており、このため、ローラーハースキルン用セッター
は、短時間における昇温、焼成、冷却の繰り返しに耐え
る、耐スポール性に優れた性能が望まれている。従来、
ローラーハースキルン用セッターには、低熱膨張性に優
れたコージェライトを使用することが行なわれている。
2. Description of the Related Art In recent years, when firing tiles and the like,
From the viewpoint of energy saving, improvement of productivity, etc., the roller hearth kiln is used, and the baking is speeded up and the time is shortened. It is desired to have excellent spall resistance that can withstand repeated cooling. Conventionally,
As a roller hearth kiln setter, cordierite with excellent low thermal expansion is used.

【0003】[0003]

【発明が解決しようとする課題】 しかしながら、上記
した従来のローラーハースキルン用セッターにあって
は、原料コージェライト中に、Fe23 の他TiO
2 ,MnO,K2 O,CuO,Na2 O,K2 O等の不
純物が含まれており、このため、これらの不純物が、タ
イル等の焼成品の成分と反応して焼成品に脱粒を生ず
る。また、焼成品搬送用ローラーに付着し易く、操業率
を低下させ、また、セッターの寿命を縮める等の問題が
あった。本発明者は、セッターの原料として、所定以上
の高純度のコージェライトを使用することにより、上記
した従来の問題を解決できることを見いだし、本発明に
到達した。
However, in the above-mentioned conventional setter for roller hearth kiln, TiO in addition to Fe 2 O 3 is contained in the raw cordierite.
Impurities such as 2 , MnO, K 2 O, CuO, Na 2 O, and K 2 O are contained. Therefore, these impurities react with the components of the fired product such as tiles and cause the fired product to be shredded. Occurs. In addition, there are problems that the baked product is easily attached to the rollers for transporting the product, the operating rate is reduced, and the life of the setter is shortened. The present inventor has found that the above-mentioned conventional problems can be solved by using cordierite having a high purity of a predetermined level or higher as a raw material for a setter, and has reached the present invention.

【0004】[0004]

【課題を解決するための手段】 即ち、本発明によれ
ば、骨材及び/又は結合材としてコージェライトを含む
セッターであって、該コージェライトの純度を95%以
上としたことを特徴とするセッター、が提供される。本
発明においては、コージェライト骨材の純度を95%以
上とすることが好ましい。
Means for Solving the Problems That is, according to the present invention, a setter containing cordierite as an aggregate and / or a binder, wherein the purity of the cordierite is 95% or more. A setter is provided. In the present invention, it is preferable that the cordierite aggregate has a purity of 95% or more.

【0005】更に、本発明によれば、骨材及び/又は結
合材としてコージェライトを含むセッターの製造にあた
り、骨材原料として純度95%以上のコージェライトを
用いて結合材とともに混合、成形し、得られた成形体を
焼成することを特徴とするセッターの製造方法、が提供
される。さらにまた、本発明によれば、骨材及び/又は
結合材としてコージェライトを含むセッターの製造にあ
たり、焼成時にコージェライト化して純度95%以上の
結合材となる原料を用いて骨材原料とともに混合、成形
し、得られた成形体を焼成することを特徴とするセッタ
ーの製造方法、が提供される。本発明のセッターは、耐
スポール性に優れるため、迅速焼成に使用されているロ
ーラーハースキルン用として特に好ましく用いられる。
Further, according to the present invention, in producing a setter containing cordierite as an aggregate and / or a binder, cordierite having a purity of 95% or more is used as an aggregate raw material and mixed and molded with the binder, There is provided a method for producing a setter, which comprises firing the obtained molded body. Furthermore, according to the present invention, in producing a setter containing cordierite as an aggregate and / or a binder, a raw material which becomes a binder having a purity of 95% or more by being cordierite during firing is mixed with an aggregate raw material. The present invention provides a method for producing a setter, which comprises molding, and firing the obtained molded body. Since the setter of the present invention has excellent spall resistance, it is particularly preferably used for a roller hearth kiln used for rapid firing.

【0006】[0006]

【作用】 本発明は、骨材、結合材のどちらか一方また
は両方がコージェライトを含むセッターであり、かつコ
ージェライトの純度を95%以上としたものである。こ
こで、コージェライトの純度は96%以上がさらに好ま
しく、97%以上が特に好ましい。コージェライト骨材
原料及び/又はコージェライト微粒粉を骨材及び結合部
に使用したセッターの場合、コージェライト骨材原料ま
たはコージェライト微粒粉の純度が95%未満では、F
23 ,TiO2 ,MnO,K2 O,CuO等の不純
物の影響を受け、タイル等の焼成品の低融化やコージュ
ライト自身のガラス化が起こり、セッターがタイル等の
焼成品に付着したり、焼成品搬送用ローラーに付着して
焼成品の品質低下や焼成炉の操業度の低下を起こし、更
に、セッターの寿命が縮まる等の問題があり、好ましく
ない。
The present invention is a setter in which one or both of the aggregate and the binder contain cordierite, and the purity of cordierite is 95% or more. Here, the purity of cordierite is more preferably 96% or more, and particularly preferably 97% or more. In the case of a setter in which cordierite aggregate raw material and / or cordierite fine granules are used for the aggregate and the joint, if the purity of cordierite aggregate raw material or cordierite fine powder is less than 95%, F
Due to the influence of impurities such as e 2 O 3 , TiO 2 , MnO, K 2 O, and CuO, the melting of the fired product such as tiles and vitrification of cordierite itself occur, and the setter adheres to the fired product such as tiles. However, there is a problem in that the quality of the fired product deteriorates and the operability of the firing furnace deteriorates by adhering to the rollers for conveying the fired product, and the life of the setter shortens.

【0007】 また、本発明に係るセッターにおいて、
コージェライト骨材の純度を95%以上とした場合であ
っても、上記とほぼ同様の効果がある。また、コージェ
ライトからなる結合材として、コージェライト化する原
料を成形、焼成して得られた物を粉砕してこれを使用す
ると、コージェライト原料がガラス化せず、タイルへの
付着がないため好ましい。
Further, in the setter according to the present invention,
Even when the purity of the cordierite aggregate is 95% or more, the same effect as above is obtained. Further, as a binder made of cordierite, when a raw material to be made into cordierite is molded and fired, and the obtained material is crushed and used, the cordierite raw material does not vitrify and does not adhere to tiles. preferable.

【0008】 また、セッターの原料として、焼成する
ことによってコージェライト化し、純度95%以上のコ
ージェライトとなるような組成の原料を使用することも
可能である。このような原料としては、タルク、粘土、
アルミナなどを挙げることができる。上記コージェライ
ト骨材原料の粒度範囲は500〜4000μmが好まし
く、更に500〜2000μmが好ましい。また結合材
となるコージェライト微粒粉の粒度範囲は500μm以
下が好ましい。なお、コージェライト以外の骨材原料、
結合材の粒度範囲についても上記の範囲が好ましい。コ
ージェライト以外の骨材原料、結合材の種類としては、
アンダリュサイト、ムライト、アルミナ等を挙げること
ができる。さらに、骨材原料と結合材となる微粒粉の混
合割合(少なくとも骨材原料及び結合材の一方にコージ
ェライトを含む)としては、一般に3:7〜7:3(重
量割合)、好ましくは5:5〜6:4(重量割合)であ
る。
Further, as a raw material for the setter, it is also possible to use a raw material having a composition that forms cordierite by firing and becomes cordierite with a purity of 95% or more. Such raw materials include talc, clay,
Alumina etc. can be mentioned. The particle size range of the cordierite aggregate raw material is preferably 500 to 4000 μm, more preferably 500 to 2000 μm. The particle size range of the cordierite fine powder used as the binder is preferably 500 μm or less. In addition, aggregate materials other than cordierite,
The above range is also preferable for the particle size range of the binder. As aggregate materials other than cordierite, and types of binders,
Andalusite, mullite, alumina, etc. can be mentioned. Further, the mixing ratio of the aggregate raw material and the fine grain powder serving as the binder (at least one of the aggregate raw material and the binder contains cordierite) is generally 3: 7 to 7: 3 (weight ratio), preferably 5 : 5 to 6: 4 (weight ratio).

【0009】次に、本発明に係るセッターの製造方法に
ついて説明する。まず、骨材原料と結合材をバインダー
とともに混合する。ここで、骨材原料及び/又は結合材
として純度95%以上のコージェライトを用いる。コー
ジェライトは骨材原料としても結合材としても使用する
ことができるが、コージェライトを結合材として使用す
る場合には、焼成時にコージェライト化する組成の原料
を用いることができる。次いで、混合物を所定圧力で成
形し、得られた成形体を1200〜1400℃で焼成す
ることによりセッターが製造される。
Next, a method for manufacturing a setter according to the present invention will be described. First, the aggregate raw material and the binder are mixed with the binder. Here, cordierite with a purity of 95% or more is used as an aggregate raw material and / or a binder. Although cordierite can be used as both an aggregate raw material and a binder, when cordierite is used as a binder, a raw material having a composition that forms cordierite during firing can be used. Next, the mixture is molded at a predetermined pressure, and the obtained molded body is fired at 1200 to 1400 ° C., whereby a setter is manufactured.

【0010】[0010]

【実施例】 以下、本発明を実施例に基づき更に詳細に
説明するが、本発明はこれらの実施例に限られるもので
はない。 (実施例1)原料として、表1に示すような粒度、配合
割合、及び純度のコージェライトの骨材原料及び微粒粉
を用い、金型により500g/cm2 の圧力で加圧成形して
450mm×450mm×厚さ10mmの成形体を作製し、こ
れを1350℃で3時間焼成して試験体を作製した。こ
の試験体を、温度1300℃の窯内に1回1時間の条件
で200回ローラーハースキルンへの通窯試験を行な
い、セッターの焼成品への付着、セッターのクラック発
生状況、セッターの残存強度について評価した。残存強
度は、1200℃まで昇温後常温へ冷却するサイクルを
250回繰り返した時の残存強度を測定した。その結果
を表1に示す。
EXAMPLES Hereinafter, the present invention will be described in more detail based on examples, but the present invention is not limited to these examples. (Example 1) As a raw material, an aggregate raw material and fine powder of cordierite having a particle size, a blending ratio, and a purity as shown in Table 1 were used, and 450 mm was formed by pressure molding with a mold at a pressure of 500 g / cm 2. A molded body of × 450 mm × thickness of 10 mm was prepared, and this was fired at 1350 ° C. for 3 hours to prepare a test body. This test piece was subjected to a 200-hour kiln test on a roller hearth kiln once for 1 hour in a kiln at a temperature of 1300 ° C., adhesion of a setter to a fired product, occurrence of cracks in the setter, residual strength of the setter Was evaluated. The residual strength was measured by repeating the cycle of heating up to 1200 ° C. and then cooling to room temperature 250 times. The results are shown in Table 1.

【0011】[0011]

【表1】 [Table 1]

【0012】表1に示す結果から明らかなように、骨材
原料及び/又は結合材として純度95%以上のコージェ
ライトを用いて得られたセッターによれば、残存強度が
高いため、セッターの割れも発生し難く、また、不純物
が極めて少ないので、タイルとの反応、付着、ローター
との反応、付着がないことがわかる。
As is clear from the results shown in Table 1, according to the setter obtained by using cordierite having a purity of 95% or more as the aggregate raw material and / or the binder, the residual strength is high, so that the setter cracks. It can be seen that there is no reaction with the tile, no adhesion, no reaction with the rotor, and no adhesion because the impurities are extremely small.

【0013】[0013]

【発明の効果】 本発明のセッターによれば、コージェ
ライト原料の純度を高めることにより、安定した組成の
セッターを得ることができ、焼成品の焼成中において、
セッター中の不純物成分が焼成品と反応して製品に脱粒
を起こすことがない。また、焼成中に焼成品や搬送用ロ
ーラーなどに付着することもなく、高品質の焼成品を効
率よく製造することができる。
EFFECTS OF THE INVENTION According to the setter of the present invention, by increasing the purity of the cordierite raw material, a setter having a stable composition can be obtained.
Impurity components in the setter do not react with the baked product to cause shedding of the product. Further, it is possible to efficiently manufacture a high-quality baked product without adhering to a baked product or a transportation roller during baking.

Claims (7)

【特許請求の範囲】[Claims] 【請求項1】 骨材及び/又は結合材としてコージェラ
イトを含むセッターであって、該コージェライトの純度
を95%以上としたことを特徴とするセッター。
1. A setter containing cordierite as an aggregate and / or a binder, wherein the purity of the cordierite is 95% or more.
【請求項2】 コージェライト骨材の純度を95%以上
とした含むセッターであって、コージェライト骨材の純
度が95%以上である請求項1記載のセッター。
2. The setter according to claim 1, wherein the cordierite aggregate has a purity of 95% or more, and the cordierite aggregate has a purity of 95% or more.
【請求項3】 焼成時にコージェライト化して結合材と
なる原料を含む請求項1又は2記載のセッター。
3. The setter according to claim 1, further comprising a raw material which becomes a binder by forming cordierite during firing.
【請求項4】 ローラーハースキルン用である請求項1
〜3のいずれかに記載のセッター。
4. A roller hearth kiln according to claim 1.
The setter according to any one of to 3.
【請求項5】 骨材及び/又は結合材としてコージェラ
イトを含むセッターの製造にあたり、骨材原料として純
度95%以上のコージェライトを用いて結合材とともに
混合、成形し、得られた成形体を焼成することを特徴と
するセッターの製造方法。
5. In the production of a setter containing cordierite as an aggregate and / or a binder, cordierite having a purity of 95% or more is used as an aggregate raw material, mixed and molded with the binder, and the obtained molded body is obtained. A method for producing a setter, which comprises firing.
【請求項6】 骨材及び/又は結合材としてコージェラ
イトを含むセッターの製造にあたり、焼成時にコージェ
ライト化して純度95%以上のコージェライト結合材と
なる原料を用いて骨材原料とともに混合、成形し、得ら
れた成形体を焼成することを特徴とするセッターの製造
方法。
6. In the production of a setter containing cordierite as an aggregate and / or a binder, a raw material which becomes a cordierite binder having a purity of 95% or more during firing is mixed and molded with an aggregate raw material. Then, the method for producing a setter, which comprises firing the obtained molded body.
【請求項7】 セッターがローラーハースキルンに用い
られる請求項5又は6記載のセッターの製造方法。
7. The method for producing a setter according to claim 5, wherein the setter is used in a roller hearth kiln.
JP03156994A 1994-03-01 1994-03-01 Setter and its manufacturing method Expired - Lifetime JP3382702B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP03156994A JP3382702B2 (en) 1994-03-01 1994-03-01 Setter and its manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP03156994A JP3382702B2 (en) 1994-03-01 1994-03-01 Setter and its manufacturing method

Publications (2)

Publication Number Publication Date
JPH07243772A true JPH07243772A (en) 1995-09-19
JP3382702B2 JP3382702B2 (en) 2003-03-04

Family

ID=12334817

Family Applications (1)

Application Number Title Priority Date Filing Date
JP03156994A Expired - Lifetime JP3382702B2 (en) 1994-03-01 1994-03-01 Setter and its manufacturing method

Country Status (1)

Country Link
JP (1) JP3382702B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014514232A (en) * 2011-03-21 2014-06-19 センター フォー アブレイシブズ アンド リフラクトリーズ リサーチ アンド ディベロップメント シー.エー.アール.アール.ディー. ゲーエムベーハー Composition for refractory or kiln tools of regular or irregular shape

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014514232A (en) * 2011-03-21 2014-06-19 センター フォー アブレイシブズ アンド リフラクトリーズ リサーチ アンド ディベロップメント シー.エー.アール.アール.ディー. ゲーエムベーハー Composition for refractory or kiln tools of regular or irregular shape

Also Published As

Publication number Publication date
JP3382702B2 (en) 2003-03-04

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