JP4132865B2 - Baking method of baked goods - Google Patents

Baking method of baked goods Download PDF

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JP4132865B2
JP4132865B2 JP2002041902A JP2002041902A JP4132865B2 JP 4132865 B2 JP4132865 B2 JP 4132865B2 JP 2002041902 A JP2002041902 A JP 2002041902A JP 2002041902 A JP2002041902 A JP 2002041902A JP 4132865 B2 JP4132865 B2 JP 4132865B2
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charcoal
kiln
coffee beans
pottery
firing
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JP2003238231A (en
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将英 松田
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将英 松田
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/10Biofuels, e.g. bio-diesel
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/30Fuel from waste, e.g. synthetic alcohol or diesel
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/78Recycling of wood or furniture waste

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  • Solid Fuels And Fuel-Associated Substances (AREA)

Description

【0001】
【発明の属する技術分野】
この発明は、陶芸窯を用いて陶磁器を焼成するための焼物の焼成方法更に詳しくは、コーヒ豆製の炭を用いて無釉焼締め陶磁器を焼成することができる焼成方法に関する。
【0002】
【従来の技術】
従来、焼物を焼成するための設備として、耐火レンガ等を用いて構築した陶芸窯は、大型で固定式であり、設置に広いスペースを必要とし、高価な設備となるため、近年、趣味の陶芸家等が個人的に自宅で陶磁器を手軽に焼成することができるように、移動可能となる簡易な構造の陶芸窯が提案されている。このような陶芸窯にはいくつかの方式があり、具体的には、電気を熱源とする電気炉陶芸窯、ガスや灯油を燃料とする陶芸窯、薪や木炭を燃料とする陶芸窯を挙げることができる。
【0003】
ところで、焼物(以下陶磁器ということもある)の焼成において、殆どは施釉陶磁器であるが、燃料に薪や木炭を使用し、釉薬をかけずに高温で焼成する無釉焼締め方法がある。この無釉焼締め方法は、薪や木炭の灰の一部が自然釉となって陶磁器の原料成分と融合し、薪や木炭の種類に応じた独特の色合いと模様が形成されることになる。
【0004】
前者の施釉陶磁器の焼成方法は、施釉した生地や素焼きの作品を窯詰めした後、薪や木炭に点火して、煙突の炎と窯内の発色もしくは温度計の温度を見ながら追い焚きをし、この時、煙突の炎が長い内に追い焚きして最後まで焼成した時は還元焼成となり、煙突の炎が短くなって燃えきる少し前に追い焚きをしていき、最後まで焼成した時は酸化焼成になり、この違いにより色合い、特に釉薬の仕上がりが大きく変わることになる。
【0005】
また、後者の無釉焼締め方法は、生地や素焼きの作品を施釉せずに窯詰めした後、薪や木炭に点火して、煙突の炎と窯内の発色もしくは温度計の温度を見ながら追い焚きをし、上記施釉陶磁器の場合と同様に焼成するものであるが、この時、薪や木炭の灰の一部が自然釉となって陶磁器の原料成分と融合し、独特の色合いと模様が形成され、還元焼成と酸化焼成の場合での仕上がりは、元の粘土の成分によって大きく変化する。
【0006】
このため、電気炉陶芸窯及びガスや灯油を燃料とする陶芸窯は、上記のような無釉焼締め方法を実施することができず、このため、薪や木炭を燃料とする陶芸窯の使用が必要になる。
【0007】
木炭を燃料として手軽に陶磁器を焼成する陶芸窯としては、本出願人が特開2000−146450号によってすでに提案した。また、木炭としては、高級なものとして備長炭があり、安価なものとして雑木を用いた木炭がある。
【0008】
この木炭を燃料とする陶芸窯は、開閉自在となる燃料投入口と空気孔が設けられ、内部が燃焼室となって上面が開放した底窯部材と、燃料投入口と空気孔が設けられ、上記底窯部材上に載置する中間窯部材と、中間窯部材上に載置する上窯部材と、排気口が設けられ、上窯部材の上端を閉鎖するための蓋部材と、上記各窯部材間に配置する陶磁器載置部材とからなり、耐火性の材料を用いたこれらの各構成部材で簡易登り窯を形成し、陶磁器載置部材の上に焼物を載置した状態で、底窯部材の内部燃焼室に投入した木炭を点火燃焼させ、陶芸窯内を高温にすることにより陶磁器を焼成するものであり、このとき、上昇する燃焼空気に含まれている木炭の灰が陶磁器に付着することにより、陶磁器の原料成分と融合し、独特の色合いと模様が形成されることになる。
【0009】
上記のような陶芸窯は、施釉陶磁器の焼成は勿論のこと、無釉焼締め方法が実施できると共に、底窯部材と中間窯部材に対する木炭の投入が自由にできるので、追い焚きや窯内温度の調整が行え、しかも、窯内の一酸化炭素を過多にしても木炭は燃焼するので、還元焼成が行えるという利点がある。
【0010】
【発明が解決しようとする課題】
しかし、陶磁器の焼成に安価な雑木の木炭を使用した場合、着火から最高温度に達するまでに時間がかかり、その分、焼成に要する時間が長くなるという問題があり、高級な備長炭の場合は、このような問題は防げるものの、価格的に高くつくという難点がある。
【0011】
また、木炭を使用した無釉焼締め方法において、作品の表面に木炭の灰が付着して土と反応することで、ビロード状の模様が付くことになるが、この模様の色合いは既に知られているように、緑色や黄色、茶色のような限られた色合いとなり、新たな色模様の創出ができないものである。
【0012】
そこで、この発明の課題は、リサイクル品であるコーヒ豆の炭を焼物の焼成に使用することにより、焼成に要する時間の短縮と燃料経費の削減を図ることができ、しかも、無釉焼締め方法においては、コーヒ豆の炭によって生じた灰と焼物の原料成分の融合により、木炭とは異なった斬新な色合いと模様が得られる焼物の焼成方法を提供することにある。
【0013】
【課題を解決するための手段】
上記のような課題を解決するため、この発明は、コーヒ豆を挽いて焙煎に使用した後の粒体を炭化させ、これを所定の大きさに成形したコーヒ豆の炭を陶芸窯の燃料に用い、このコーヒ豆の炭を燃焼させることにより陶芸窯内に生じる燃焼流が焼物に接触するように、焼物を陶芸窯内に配置して焼物を焼成する構成を採用したものである。
【0016】
このようなコーヒ豆の炭は、コーヒ抽出後に産業廃棄物として生じる粒状の挽きかすを利用し、この挽きかすを固めることによって製造されたものであり、リサイクル品として価格的に安価であると共に、コーヒ豆の炭は、着火から最高温度に達するまでの時間が速く、その分焼成時間が短くてすむことになる。
【0017】
また、コーヒ豆の炭は、燃焼による熱カロリーが高く、焼物の焼締めが確実に行えることになると共に、窯内の一酸化炭素を過多にしても燃焼するので、還元焼成が行える。
【0018】
燃料にコーヒ豆の炭を用いて焼成した焼物は、コーヒ豆の炭と焼物の原料成分の融合によりガラス状の物が付き、このガラス状の物がブルーガラスのような斬新な色合いと模様となる。
【0019】
【発明の実施の形態】
以下、この発明の実施の形態を図示例と共に説明する。
【0020】
図2は、焼物の焼成方法において、陶芸窯の燃料に使用するコーヒ豆の炭1を示し、挽いたコーヒ豆からコーヒを抽出した後に生じる粒状の挽きガラを使用し、この粒状の挽きガラを炭化処理した後、炭化した粒状の挽きガラと可燃性のバインダーを混合し、これを円軸状やブロック状に成形して固めたものであり、例えば、外径50mm、内径25mm程度で長さが4〜50mm程度の円筒状に形成されている。
【0021】
この、コーヒ豆の炭1は、コーヒ飲料の製造過程で発生したコーヒ豆の粒状挽きガラを使用しているので、産業廃棄物となる粒状挽きガラのリサイクル化が図れ、従って、粒状挽きガラの廃棄経費が不要になり、資源の有効利用が可能になると共に、従来、陶芸窯の燃料に使用されていた薪や木炭に比べ、製造コストが安価となるだけでなく、着火から最高温度に達するまでの時間が薪や雑木の木炭よりも速く、また、燃焼時のカロリーは、高級な木炭である備長炭と同程度となる。
【0022】
図3乃至図5は、木炭とコーヒ豆の炭1の燃焼状態を測定した結果を示し、図3は、雑木の木炭の燃焼状態を、図4は、備長炭の燃焼状態を、図5はコーヒ豆の炭の燃焼状態を示している。
【0023】
何れの場合も、使用した陶芸窯は、有効内径が200mm前後×200mm×高さ200mmのものを二段重ねにして用い、初期の炭の量は3.5kgであった。また、窯内の複数箇所で温度を測定した。
【0024】
図3のように、雑木の木炭は、6時間追い焚きをして漸く1270℃にすることができた。400℃迄冷めるのに4時間とやや早い目であった。なお、この木炭のカロリーは、6,800Kcal/kgであった。
【0025】
図4のように、備長炭は、燃焼開始から2時間15分で1240℃に温度が上がり、400℃迄冷めるのに12時間とゆっくりと温度が下がる特性があり、カロリーは、7,200Kcal/kg〜7,400Kcal/kgである。
【0026】
図5のように、コーヒ豆の炭は、燃焼開始から1時間40分ぐらいで1300℃を越え、2時間ぐらいから温度が下がりだし、400℃迄冷めるのに約6時間であった。このコーヒ豆の炭のカロリーは、7,200Kcal/kg〜7,400Kcal/kgである。
【0027】
このように、コーヒ豆の炭は、雑木の木炭及び備長炭に比べて短い時間で高温に達すると共に、高級品である備長炭と同程度のカロリーがあり、陶磁器の焼成時間を短縮することができることになる。
【0028】
図1は、上記コーヒ豆の炭1を燃料に用いて陶磁器を焼成するために用いる、簡易登り窯となる陶芸窯2の一例を示している。
【0029】
この陶芸窯2は、周壁に開閉自在となる燃料投入口3と空気孔4が設けられ、内部が燃焼室5となって上面が開放した有底角筒状の底窯部材6と、同じく周壁に、燃料投入口7と空気孔8が設けられ、上記底窯部材6上に載置して所要数を順次接ぎ合わせて行く角筒状上窯部材9と、排気口10が設けられ、最上部上窯部材9の上端を閉鎖するための蓋部材11と、上記各窯部材6、9間に配置する陶磁器の載置部材12とからなり、耐火性の材料を用いたこれらの各構成部材で簡易登り窯を形成し、上記空気孔4、8や排気口10は、耐火性の栓によって開閉できるようになっている。
【0030】
ちなみに、図示の場合、底窯部材6の燃焼室5は、縦220mm前後、横220mm、高さ200mmの容積を有し、その上に同様の容積を有する角筒状上窯部材9を二段重ねして用い、各構成部材は1,300℃以上の温度に耐える耐熱性を有している。
【0031】
次に、上記陶芸窯2と燃料にコーヒ豆の炭1を用い、無釉焼締め方法で焼物を焼成する方法を説明する。
【0032】
底窯部材6の上に載置部材12を置き、この載置部材12上に、生地や素焼きの状態で施釉していない焼成せんとする作品Aを載せ、次に、底窯部材6の上に上窯部材9を重ね、この上窯部材9上に載置部材12を置いてその上に焼成せんとする作品Aを載せ、このようにして所要数の上窯部材9の積み重ねと載置部材12上への作品Aの載置を繰返して窯詰めし、最上部上窯部材9の上端を蓋部材11で閉鎖し、この状態で燃料投入口3から底窯部材6の燃焼室5内にコーヒ豆の炭1を所定量投入し、これを着火すると共に空気孔4からの空気の自然供給によって燃焼させる。
【0033】
なお、上窯部材9においては、燃料投入口7からその内部の載置部材12上に追加用のコーヒ豆の炭1を供給することができる。
【0034】
コーヒ豆の炭1が燃焼することにより、陶芸窯2の内部温度が上昇して載置部材12上の作品Aを焼成することになり、コーヒ豆の炭1は燃焼による熱カロリーが高く、最高燃焼温度は、1200〜1300℃の範囲に達するので、無釉焼締め焼成が実施できることになる。
【0035】
また、コーヒ豆の炭1は、燃焼開始から最高温度に達するまでの時間が速く、作品Aの焼成に要する時間がその分短くなり、陶芸窯2からの焼成した陶磁器の取り出しが速く行えることになる。
【0036】
上記無釉焼締めにおいて、陶芸窯2の内部を上昇する燃焼流には、コーヒ豆の炭1の灰が含まれることになり、従って、載置部材12上への無釉作品Aの載置を、この燃焼流が無釉作品Aに接触するような条件に設定すれば、上昇する燃焼空気に含まれているコーヒ豆の炭1の灰が作品Aに付着することにより、作品Aの原料成分と融合し、コーヒ豆の炭と焼物の原料成分の融合によりガラス状の物が付き、このガラス状の物がブルーガラスのような従来の木炭とは全く異なる、斬新で独特な色合いと模様が形成されることになる。
【0037】
また、コーヒ豆の炭1の燃焼による窯内温度は、1300℃程度までになるので、作品Aの焼き締めが確実に行え、水漏れのない陶磁器が得られることになる。
【0038】
更に、コーヒ豆の炭1の燃焼時において、燃料投入口3、7を閉じて陶芸窯2内の酸素を少なくした状態でも、コーヒ豆の炭1は燃焼可能であり、一酸化炭素による還元焼成が可能になる。
【0039】
【発明の効果】
以上説明したように、この発明によると、陶芸窯の燃料にコーヒ豆の炭を用いて焼物を焼成するようにしたので、リサイクル品であるコーヒ豆の炭を陶磁器の焼成に使用することにより、焼成に要する時間の短縮と燃料経費の削減を図ることができ、しかも、無釉焼締め方法において、コーヒ豆の炭によって生じた灰と作品の原料成分の融合により、薪や木炭とは異なった斬新な色合いと模様の陶磁器が得られることになる。
【図面の簡単な説明】
【図1】この発明の焼成方法に用いる簡易陶芸窯の縦断面図
【図2】この発明焼成方法に用いるコーヒ豆の炭を示す斜視図
【図3】木炭の燃焼状態の温度測定結果を示す測定図
【図4】備長炭の燃焼状態の温度測定結果を示す測定図
【図5】コーヒ豆の燃焼状態の温度測定結果を示す測定図
【符号の説明】
1 コーヒ豆の炭
2 陶芸窯
3 燃料投入口
4 空気孔
5 燃焼室
6 底窯部材
7 燃料投入口
8 空気孔
9 上窯部材
10 排気口
11 蓋部材
[0001]
BACKGROUND OF THE INVENTION
The present invention, pottery methods firing for firing the ceramic using a pottery kiln, more particularly, relates to a baking how that can be fired free glaze-baking clamping ceramic with coffee beans made charcoal.
[0002]
[Prior art]
Conventionally, pottery kilns constructed using fire bricks as equipment for firing ceramics are large and fixed, require a large space for installation, and become expensive equipment. A pottery kiln having a simple structure that can be moved has been proposed so that homes and the like can easily burn ceramics at home. There are several types of such pottery kilns, specifically, electric furnace pottery kilns that use electricity as a heat source, pottery kilns that use gas and kerosene as fuel, and pottery kilns that use firewood and charcoal as fuel. be able to.
[0003]
By the way, in firing of ceramics (hereinafter sometimes referred to as ceramics), most are glazed ceramics, but there is a non-glazed baking method in which firewood or charcoal is used as fuel and fired at a high temperature without glaze. With this flameless baking method, a part of the ash of the firewood and charcoal becomes natural firewood and fuses with the ingredients of the ceramics, and a unique color and pattern according to the kind of firewood and charcoal is formed. .
[0004]
The former method of firing glazed ceramics is to glaze the firewood and charcoal after the glazed dough and unglazed pieces are baked into a kiln, and to chase while watching the chimney flame and the color in the kiln or the temperature of the thermometer. At this time, when the chimney flame is chased within a long time and fired until the end, it becomes reduction firing, when the chimney flame is shortened and burnt down shortly before burning, It becomes oxidation firing, and the color, especially the finish of the glaze, changes greatly due to this difference.
[0005]
In addition, the latter method of flameless baking is to stuff the kiln without glazing the dough or unglazed pieces, and then ignite the firewood and charcoal while watching the chimney flame and the color in the kiln or the temperature of the thermometer It is fired in the same way as in the case of the above glazed ceramics, but at this time, some of the ash of the firewood and charcoal becomes natural firewood and fuses with the ingredients of the ceramics, giving it a unique color and pattern. And the finish in the case of reduction firing and oxidation firing varies greatly depending on the components of the original clay .
[0006]
For this reason, the electric furnace pottery kiln and the pottery kiln fueled with gas or kerosene cannot carry out the above-mentioned flameless baking method. For this reason, the use of the pottery kiln fueled with firewood or charcoal Is required.
[0007]
As a pottery kiln for easily firing ceramics using charcoal as fuel, the present applicant has already proposed in Japanese Patent Laid-Open No. 2000-146450. Further, as charcoal, there is Bincho charcoal as a high-grade one, and charcoal using miscellaneous wood as a cheap one.
[0008]
This pottery kiln using charcoal as a fuel is provided with a fuel inlet and an air hole that can be freely opened and closed, a bottom kiln member with the inside opened as a combustion chamber, a fuel inlet and an air hole, An intermediate kiln member placed on the bottom kiln member, an upper kiln member placed on the intermediate kiln member, a lid member provided with an exhaust port for closing the upper end of the upper kiln member, and each of the kilns It consists of ceramic placing members arranged between the members, and a simple climbing kiln is formed with each of these constituent members using fire-resistant materials, and the bottom kiln is placed on the ceramic placing member. Charcoal fired in the internal combustion chamber of the member is ignited and burned, and the ceramics are baked by raising the temperature in the pottery kiln. At this time, the charcoal ash contained in the rising combustion air adheres to the ceramics. As a result, it fuses with the ceramic ingredients and forms a unique color and pattern. It is is will be.
[0009]
The pottery kiln as described above can not only fire glazed ceramics, but also carry out non-glazing methods, and can freely charge charcoal to the bottom kiln member and intermediate kiln member, so Moreover, since charcoal burns even if the carbon monoxide in the kiln is excessive, there is an advantage that reduction firing can be performed.
[0010]
[Problems to be solved by the invention]
However, when cheap charcoal charcoal is used for firing ceramics, it takes time to reach the maximum temperature from ignition, and there is a problem that the time required for firing becomes longer. Although this problem can be prevented, there is a problem that it is expensive.
[0011]
Also, in the flameless baking method using charcoal, the ash of charcoal adheres to the surface of the work and reacts with the soil, resulting in a velvety pattern, but the color of this pattern is already known As shown, the colors are limited to green, yellow, and brown, and new color patterns cannot be created.
[0012]
Accordingly, an object of the present invention is to reduce the time required for firing and the fuel cost by using coffee beans charcoal, which is a recycled product, in the firing of the baked goods. in is to provide a fusion of the raw material components of the ash and pottery produced by charcoal coffee beans, the baking how pottery to novel colors and patterns different from the charcoal is obtained.
[0013]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention carbonizes grains after coffee beans are ground and used for roasting, and the coffee beans obtained by molding the coffee beans into a predetermined size are used as fuel for ceramic pottery kilns. The structure is used in which the ceramics are placed in the pottery kiln so that the combustion flow generated in the pottery kiln by contacting the charcoal of the coffee beans is in contact with the pottery.
[0016]
Such coffee beans charcoal is produced by using granular grinds produced as industrial waste after coffee extraction, and solidifying the grinds, and is inexpensive as a recycled product. The charcoal of coffee beans has a fast time from ignition to the maximum temperature, and the burning time is shortened accordingly.
[0017]
Further, the charcoal of coffee beans has a high thermal calorie due to combustion, so that the burned product can be surely tempered and burned even if the carbon monoxide in the kiln is excessive, so that reduction firing can be performed.
[0018]
The baked goods baked using the charcoal of the coffee beans as a fuel are attached with a glassy material by the fusion of the raw material ingredients of the coffee beans and the coffee beans, and this glassy material has a novel color and pattern like blue glass. Become.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0020]
FIG. 2 shows a coffee beans charcoal 1 used as a fuel for a pottery kiln in a firing method of a pottery product, using a granular ground glass produced after extracting the coffee from the ground coffee beans, and using this granular ground glass. After carbonization treatment, carbonized granular ground glass and a flammable binder are mixed, and this is formed into a circular shaft or block shape and hardened. For example, the outer diameter is about 50 mm and the inner diameter is about 25 mm. Is formed in a cylindrical shape of about 4 to 50 mm.
[0021]
This coffee beans charcoal 1 uses granulated ground coffee beans produced in the production process of coffee beverages, so it is possible to recycle the ground ground waste that is industrial waste. This eliminates the need for disposal costs, enables effective use of resources, and not only lowers manufacturing costs compared to firewood and charcoal used as fuel for ceramic pottery, but also reaches the maximum temperature after ignition. The time to burn is faster than that of firewood or miscellaneous charcoal, and the calorie at the time of combustion is comparable to that of Bincho charcoal, which is a high-grade charcoal.
[0022]
3 to 5 show the measurement results of the combustion state of charcoal 1 and charcoal 1 of coffee beans, FIG. 3 shows the combustion state of charcoal of miscellaneous trees, FIG. 4 shows the combustion state of Bincho charcoal, and FIG. The charcoal burning state of coffee beans is shown.
[0023]
In any case, the pottery kiln used had an effective inner diameter of about 200 mm × 200 mm × height 200 mm in two layers, and the initial amount of charcoal was 3.5 kg. Moreover, temperature was measured in several places in a kiln.
[0024]
As shown in FIG. 3, the charcoal of the miscellaneous trees was reheated for 6 hours and gradually reached 1270 ° C. It took 4 hours to cool down to 400 ° C. The calorie of this charcoal was 6,800 Kcal / kg.
[0025]
As shown in FIG. 4, Bincho charcoal has a characteristic that the temperature rises to 1240 ° C. in 2 hours and 15 minutes from the start of combustion, and slowly cools down to 400 ° C. for 12 hours. The calorie is 7,200 Kcal / kg to 7,400 Kcal / kg.
[0026]
As shown in FIG. 5, the charcoal of the coffee beans exceeded 1300 ° C. in about 1 hour and 40 minutes from the start of combustion, and the temperature started to decrease from about 2 hours, and it took about 6 hours to cool down to 400 ° C. The calories of the charcoal of the coffee beans are 7,200 Kcal / kg to 7,400 Kcal / kg.
[0027]
In this way, coffee beans charcoal reaches a high temperature in a short time compared to charcoal and Bincho charcoal of miscellaneous trees, and has the same calories as Bincho charcoal, which is a luxury product, and can shorten the firing time of ceramics. It will be possible.
[0028]
FIG. 1 shows an example of a pottery kiln 2 that is a simple climbing kiln that is used for firing ceramics using the coffee beans charcoal 1 as a fuel.
[0029]
This pottery kiln 2 is provided with a fuel inlet 3 and an air hole 4 that can be freely opened and closed on a peripheral wall, a bottomed square cylindrical bottom kiln member 6 whose inside is a combustion chamber 5 and whose upper surface is open, and a peripheral wall. In addition, a fuel inlet 7 and an air hole 8 are provided, and a square tubular upper kiln member 9 that is placed on the bottom kiln member 6 and sequentially contacts the required number, and an exhaust port 10 are provided. Each of these constituent members using a fire-resistant material, comprising a lid member 11 for closing the upper end of the upper upper kiln member 9 and a ceramic placing member 12 disposed between the kiln members 6 and 9. A simple climbing kiln is formed, and the air holes 4 and 8 and the exhaust port 10 can be opened and closed by a fire-resistant plug.
[0030]
Incidentally, in the illustrated case, the combustion chamber 5 of the bottom kiln member 6 has a volume of approximately 220 mm in length, 220 mm in width, and 200 mm in height, and a rectangular tube-shaped upper kiln member 9 having a similar volume is provided in two stages. Overlapping and using, each component has heat resistance that can withstand temperatures of 1,300 ° C. or higher.
[0031]
Next, a method for firing the ceramic product by the flameless baking method using the ceramic pottery furnace 2 and the charcoal 1 of coffee beans as fuel will be described.
[0032]
A placement member 12 is placed on the bottom kiln member 6, and a work A that is not fired in the dough or unglazed state is placed on the placement member 12, and then on the bottom kiln member 6. The upper kiln member 9 is stacked on the upper kiln member 9, the placing member 12 is placed on the upper kiln member 9, and the work A to be fired is placed on the upper kiln member 9, thus stacking and placing the required number of upper kiln members 9. The work A is repeatedly placed on the member 12 and packed in the kiln, and the upper end of the uppermost upper kiln member 9 is closed by the lid member 11, and in this state, from the fuel inlet 3 into the combustion chamber 5 of the bottom kiln member 6. A predetermined amount of coffee beans charcoal 1 is put into the tank and ignited and burned by natural supply of air from the air holes 4.
[0033]
In the upper kiln member 9, additional coffee beans 1 can be supplied from the fuel inlet 7 onto the mounting member 12 inside the upper kiln member 9.
[0034]
By burning the charcoal 1 of the coffee beans, the internal temperature of the pottery kiln 2 rises and the work A on the mounting member 12 is baked. Since the combustion temperature reaches a range of 1200 to 1300 ° C., it is possible to carry out firing without baking.
[0035]
Also, the coffee beans charcoal 1 has a fast time from the start of combustion until it reaches the maximum temperature, and the time required for firing the work A is shortened accordingly, so that the fired ceramic from the pottery kiln 2 can be taken out quickly. Become.
[0036]
In the above-described flameless baking, the combustion flow rising inside the ceramic pottery 2 contains the ash of the charcoal 1 of the coffee beans. Is set to such a condition that the combustion flow comes into contact with the solid work A, and the ash of the coffee beans 1 contained in the rising combustion air adheres to the work A, so that the raw material of the work A Fused with charcoal of coffee beans and raw material ingredients of pottery, and a glassy material is attached, and this glassy material is completely different from conventional charcoal such as blue glass, a novel and unique color and pattern Will be formed.
[0037]
Moreover, since the temperature in the kiln by burning the charcoal 1 of coffee beans is up to about 1300 ° C., the work A can be securely baked and a ceramic without water leakage can be obtained.
[0038]
Further, when burning the coffee charcoal 1, the coffee charcoal 1 can be burned even when the fuel inlets 3 and 7 are closed to reduce the oxygen in the pottery kiln 2, and reduction firing with carbon monoxide. Is possible.
[0039]
【The invention's effect】
As described above, according to the present invention, since the fired product is fired using the charcoal of the coffee beans as the fuel of the pottery kiln, the charcoal of the coffee beans, which is a recycled product, is used for the firing of the ceramics. The time required for firing can be shortened and fuel costs can be reduced. In addition, the ashless baking method is different from firewood and charcoal due to the fusion of the ash produced by the coffee beans and the raw material components of the work. A ceramic with a novel color and pattern will be obtained.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a simple pottery kiln used in the firing method of the present invention. FIG. 2 is a perspective view showing the charcoal of coffee beans used in the firing method of the present invention. Measurement diagram [Fig. 4] Measurement diagram showing the temperature measurement result of the burning state of Bincho charcoal [Fig. 5] Measurement diagram showing the temperature measurement result of the burning state of coffee beans [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Charcoal of coffee beans 2 Ceramic pot 3 Fuel inlet 4 Air hole 5 Combustion chamber 6 Bottom kiln member 7 Fuel inlet 8 Air hole 9 Upper kiln member 10 Exhaust port 11 Lid member

Claims (1)

コーヒ豆を挽いて焙煎に使用した後の粒体を炭化させ、これを所定の大きさに成形したコーヒ豆の炭を陶芸窯の燃料に用い、このコーヒ豆の炭を燃焼させることにより陶芸窯内に生じる燃焼流が焼物に接触するように、焼物を陶芸窯内に配置して焼物を焼成することを特徴とする焼物の焼成方法。  After the coffee beans have been ground and roasted, the granules are carbonized, and the coffee beans are molded into a specified size. A method for firing a ceramic product, characterized in that the ceramic product is disposed in a ceramic pottery so that the combustion flow generated in the kiln contacts the ceramic product.
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