JP5486394B2 - Cooling device for powder baked in a mortar - Google Patents
Cooling device for powder baked in a mortar Download PDFInfo
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- JP5486394B2 JP5486394B2 JP2010108092A JP2010108092A JP5486394B2 JP 5486394 B2 JP5486394 B2 JP 5486394B2 JP 2010108092 A JP2010108092 A JP 2010108092A JP 2010108092 A JP2010108092 A JP 2010108092A JP 5486394 B2 JP5486394 B2 JP 5486394B2
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/64—Burning or sintering processes
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
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Description
本発明は匣鉢で焼成された粉体の冷却装置に関するものである。 The present invention relates to a cooling device for powder fired in a mortar.
電子工業製品の原料粉体を焼成する場合には、匣鉢と呼ばれる窯道具の内部に粉体を収納して焼成が行なわれるのが一般的である（例えば、特許文献１）。工業的には所定の焼成温度カーブが形成された連続炉の一端から匣鉢を順次炉内に入れ、炉内を移動させつつ焼成を行い、他端から取り出す連続焼成が実施されている。 When firing raw material powders for electronic industrial products, it is common to store the powder in a kiln tool called a mortar and perform firing (for example, Patent Document 1). Industrially, continuous baking is performed in which a mortar is sequentially placed in one end of a continuous furnace in which a predetermined firing temperature curve is formed, fired while moving in the furnace, and taken out from the other end.
焼成炉の他端から取り出された匣鉢内の粉体は次工程の粉体回収工程で回収される。粉体回収温度は粉体により規定され、例えば、近年安全性の高い正極材として需要増加が予想されるリン酸鉄系の正極材の原料等、低酸素雰囲気での焼成が必要となる粉体は、焼成後の大気曝露温度が５０℃以下に制限されるものもある。 The powder in the mortar taken out from the other end of the firing furnace is recovered in the next powder recovery step. Powder recovery temperature is defined by powder, for example, powder that requires firing in a low-oxygen atmosphere, such as a raw material for iron phosphate-based positive electrode materials, for which demand is expected to increase in recent years as a highly safe positive electrode material In some cases, the atmospheric exposure temperature after firing is limited to 50 ° C. or less.
このような場合、粉体回収工程の前段に、粉体を低酸素雰囲気で冷却する長大な粉体冷却スペースまたは強力な冷却能力を有する冷却装置を設置することが必要となり、好ましくないという問題があった。 In such a case, it is necessary to install a long powder cooling space for cooling the powder in a low oxygen atmosphere or a cooling device having a strong cooling capacity before the powder recovery process, which is not preferable. there were.
本発明の目的は前記問題を解決し、匣鉢で焼成された粉体の冷却に際し、長大な粉体冷却スペースまたは強力な冷却能力を有する冷却装置の設置を不要とする冷却装置を提供することである。 An object of the present invention is to solve the above-mentioned problems and provide a cooling device that eliminates the need for installing a long powder cooling space or a cooling device having a strong cooling capacity when cooling powder baked in a mortar. It is.
上記課題を解決するためになされた本発明の匣鉢で焼成された粉体の冷却装置は、匣鉢内の粉体を吸引して回収する粉体吸引ノズルと、粉体吸引ノズルから吸引された粉体を輸送する輸送ラインを備えた粉体の冷却装置であって、固定配置された粉体吸引ノズルの下方で匣鉢を移動させる匣鉢移動手段あるいは固定配置された匣鉢の上方で粉体吸引ノズルを移動させる粉体吸引ノズル移動手段を備え、匣鉢移動手段あるいは粉体吸引ノズル移動手段は、匣鉢内の粉体を層状に吸引するために垂直方向で段階的に移動し、同一高さの水平方向で連続的に移動する移動機構を有することを特徴とするものである。 The cooling device for powders baked in the mortar of the present invention made to solve the above problems is a powder suction nozzle for sucking and collecting the powder in the mortar, and suctioned from the powder suction nozzle. A powder cooling device having a transportation line for transporting the powder, wherein the bowl is moved below the fixedly arranged powder suction nozzle or above the fixedly placed bowl. A powder suction nozzle moving means for moving the powder suction nozzle is provided, and the mortar moving means or the powder suction nozzle moving means moves stepwise in the vertical direction to suck the powder in the mortar in layers. And a moving mechanism that moves continuously in the horizontal direction at the same height.
請求項２記載の発明は、請求項１記載の粉体の冷却装置において、粉体吸引ノズルの先端に、長辺が匣鉢の一辺と略同一長さであるヘラ状の吸引口を有することを特徴とするものである。 According to a second aspect of the present invention, in the powder cooling apparatus according to the first aspect, the tip of the powder suction nozzle has a spatula-shaped suction port whose long side is substantially the same as one side of the sagger. It is characterized by.
請求項３記載の発明は、請求項２記載の粉体の冷却装置において、吸引口の短辺側の外側面に、気体噴出用ノズルを備えることを特徴とするものである。 According to a third aspect of the present invention, in the powder cooling apparatus according to the second aspect, a gas ejection nozzle is provided on the outer surface on the short side of the suction port.
請求項４記載の発明は、請求項３記載の粉体の冷却装置において、気体噴出用ノズルへ気体を供給する供給管への気体流入を制御する三方弁を備えることを特徴とするものである。 According to a fourth aspect of the present invention, there is provided the powder cooling apparatus according to the third aspect, further comprising a three-way valve that controls gas inflow into a supply pipe that supplies gas to the gas ejection nozzle. .
本発明に係る匣鉢で焼成された粉体の冷却装置は、匣鉢内の粉体を吸引して回収する粉体吸引ノズルと、粉体吸引ノズルから吸引された粉体を輸送する輸送ラインを備えた粉体の冷却装置であって、固定配置された粉体吸引ノズルの下方で匣鉢を移動させる匣鉢移動手段あるいは固定配置された匣鉢の上方で粉体吸引ノズルを移動させる粉体吸引ノズル移動手段を備え、匣鉢移動手段あるいは粉体吸引ノズル移動手段は、匣鉢内の粉体を層状に吸引するために垂直方向で段階的に移動し、同一高さの水平方向で連続的に移動する移動機構を有する構成により、匣鉢内の粉体を層状に吸引する過程および輸送ラインを通過させる工程で、効率よく粉体の冷却を行うことができる。したがって、本発明によれば、従来、焼成後の匣鉢内で粉体を冷却させる場合には必要であった長大な粉体冷却スペースまたは強力な冷却能力を有する冷却装置の設置が不要となり、従来に比較して省スペースかつ省エネルギーでの粉体冷却が可能となる。 The apparatus for cooling powder baked in a mortar according to the present invention includes a powder suction nozzle that sucks and collects the powder in the mortar, and a transport line that transports the powder sucked from the powder suction nozzle. A powder cooling device comprising: a slag moving means for moving a sachet below a fixedly arranged powder suction nozzle or a powder that moves a powder suction nozzle above a fixedly placed sachet The body suction nozzle moving means includes a bowl moving means or a powder suction nozzle moving means that moves stepwise in the vertical direction in order to suck the powder in the bowl in a layered manner, and in the horizontal direction at the same height. With the structure having the moving mechanism that moves continuously, the powder can be efficiently cooled in the process of sucking the powder in the mortar in layers and the process of passing through the transport line. Therefore, according to the present invention, conventionally, it is not necessary to install a long powder cooling space or a cooling device having a strong cooling capacity, which was necessary when cooling the powder in the mortar after firing, Compared to the prior art, powder cooling can be performed with space saving and energy saving.
粉体吸引ノズルの先端に、長辺が匣鉢の一辺と略同一長さであるヘラ状の吸引口を有する請求項２記載の発明によれば、匣鉢の水平方向の移動を左右または前後の何れかに統一することができ、匣鉢移動手段の移動機構の構成を簡易化することができる。 According to the invention of claim 2, wherein the tip of the powder suction nozzle has a spatula-like suction port whose long side is substantially the same length as one side of the sagger, horizontal movement of the sagger is laterally or longitudinally Therefore, the configuration of the moving mechanism of the mortar moving means can be simplified.
吸引口の短辺側の外側面に、気体噴出用ノズルを備える請求項３記載の発明によれば、粉体吸引ノズルによる粉体吸収の途中に、該気体噴出用ノズルから匣鉢のコーナー部に気体を吹き付けて匣鉢のコーナー部に付着して残留している粉体を完全に除去することができる。 According to the third aspect of the present invention, a gas ejection nozzle is provided on the outer side surface on the short side of the suction port. During the powder absorption by the powder suction nozzle, the corner portion of the mortar from the gas ejection nozzle It is possible to completely remove the powder remaining on the corners of the mortar by spraying gas.
気体噴出用ノズルへ気体を供給する供給管への気体流入を制御する三方弁を備える請求項４記載の発明によれば、該気体噴出用ノズルからの気体噴出開始時の差圧が大きくなることを抑制し、粉体への気体噴出圧を最適化することができる。 According to the invention of claim 4, comprising a three-way valve that controls gas inflow into a supply pipe that supplies gas to the gas ejection nozzle, the differential pressure at the start of gas ejection from the gas ejection nozzle is increased. Can be suppressed, and the gas ejection pressure to the powder can be optimized.
以下に本発明の好ましい実施形態を示す。図１は粉体の冷却装置の正面図、図２は図１の側面図であり、各図において、１は粉体吸引ノズル、２は輸送ライン、３は匣鉢、４は気体噴出用ノズルを示している。 Preferred embodiments of the present invention are shown below. 1 is a front view of a powder cooling device, and FIG. 2 is a side view of FIG. 1. In each figure, 1 is a powder suction nozzle, 2 is a transport line, 3 is a bowl, 4 is a nozzle for gas ejection Is shown.
粉体吸引ノズル１は、長辺が匣鉢の一辺と略同一長さであるヘラ状の吸引口１１を有し、吸引口の短辺側の外側面に、気体噴出用ノズル４を備えている。 The powder suction nozzle 1 has a spatula-like suction port 11 whose long side is substantially the same length as one side of the bowl, and is provided with a gas ejection nozzle 4 on the outer side surface on the short side of the suction port. Yes.
図３には、連続焼成炉６の出口に配置された粉体の冷却装置の説明図を示している。本実施形態では、図３に示すように、固定配置された粉体吸引ノズル１の下方で匣鉢を移動させる匣鉢移動手段５を備えている。 FIG. 3 is an explanatory diagram of a powder cooling device disposed at the outlet of the continuous firing furnace 6. In the present embodiment, as shown in FIG. 3, a mortar moving means 5 for moving the mortar below the fixedly arranged powder suction nozzle 1 is provided.
本実施形態では、粉体吸引ノズル１は固定配置されており、焼成工程を経て、連続焼成炉６の出口から取り出された匣鉢３が粉体吸引ノズル１の下方の所定位置で停止すると、匣鉢３の下方から匣鉢移動手段５が上昇して匣鉢３を把持する。 In the present embodiment, the powder suction nozzle 1 is fixedly arranged, and when the mortar 3 taken out from the outlet of the continuous firing furnace 6 through the firing process is stopped at a predetermined position below the powder suction nozzle 1, The bowl moving means 5 ascends from below the bowl 3 and holds the bowl 3.
匣鉢移動手段５は該匣鉢移動手段の動きを制御する移動機構を備えている。移動機構の制御により、匣鉢３は、図４に示すように匣鉢３を垂直方向で段階的に移動し、同一高さの水平方向では連続的に移動し、匣鉢内の粉体が粉体吸引ノズル１から層状に吸引されていく。粉体は、匣鉢内から層状に吸引される際の急冷および輸送ライン２中での冷却により、冷却される。 The mortar moving means 5 includes a moving mechanism for controlling the movement of the mortar moving means. By controlling the moving mechanism, the mortar 3 moves the mortar 3 stepwise in the vertical direction as shown in FIG. 4, continuously moves in the horizontal direction at the same height, and the powder in the mortar is The powder is sucked in layers from the powder suction nozzle 1. The powder is cooled by rapid cooling when sucked in layers from the mortar and cooling in the transport line 2.
粉体が、リン酸鉄系の正極材の原料等、低酸素雰囲気での焼成が必要となるものの場合は、大気曝露温度が５０℃以下に制限されている。匣鉢内の粉体温度が、連続焼成炉６の出口直後で例えば３００℃程度ある場合、匣鉢内に静置した状態で粉体温度を５０℃以下まで冷却するためには、従来、連続焼成炉６の出口側に、長大な粉体冷却スペースまたは強力な冷却能力を有する冷却装置を設置することが必要であったが、本発明では、匣鉢内の粉体を層状に吸引する過程および輸送ラインを通過させる工程で、効率よく粉体の冷却を行うことができる。このため、本発明によれば、長大な粉体冷却スペースまたは強力な冷却能力を有する冷却装置の設置が不要なり、従来に比較して省スペースかつ省エネルギーでの粉体冷却を行うことができる。 In the case where the powder needs to be fired in a low oxygen atmosphere, such as a raw material for an iron phosphate-based positive electrode material, the atmospheric exposure temperature is limited to 50 ° C. or lower. When the powder temperature in the sagger is about 300 ° C. immediately after the outlet of the continuous firing furnace 6, for example, in order to cool the powder temperature to 50 ° C. or less while standing in the sagger, conventionally, Although it was necessary to install a long powder cooling space or a cooling device having a strong cooling capacity on the outlet side of the firing furnace 6, in the present invention, the process of sucking the powder in the mortar in layers In the process of passing through the transport line, the powder can be efficiently cooled. For this reason, according to the present invention, it is not necessary to install a long powder cooling space or a cooling device having a strong cooling capacity, and powder cooling can be performed with space saving and energy saving as compared with the prior art.
なお、匣鉢内の粉体を層状に吸引することなく、単に、匣鉢内に吸引圧を持つ円筒形あるいは方形のノズルを挿入して粉体を低酸素雰囲気で吸引し、粉体輸送中に冷却を行った場合には、匣鉢内の粉体が塊状のまま輸送されてしまい、満足な冷却を得られないため好ましくない。 Without sucking the powder in the mortar in layers, simply insert a cylindrical or square nozzle with suction pressure into the mortar and suck the powder in a low oxygen atmosphere, In the case of cooling, the powder in the mortar is transported as a lump and is not preferable because satisfactory cooling cannot be obtained.
匣鉢内の粉体を粉体吸引ノズル１から層状に吸引し、最後の層を吸引した後にも、匣鉢のコーナー部に粉体が付着して残留する場合には、気体噴出用ノズル４から匣鉢３内へ向けて気体を吹き付け、匣鉢のコーナー部に付着して残留している粉体を完全に除去することができる。当該構成により、粉体回収工程後の匣鉢に粉体が残留する場合に生じる問題（粉体回収率の低下による歩留まりの悪化や、残留粉体の２度焼きによる粉体品質劣化の要因となる問題）を効果的に回避することができる。 If the powder in the bowl is sucked in layers from the powder suction nozzle 1 and the last layer is sucked, if the powder remains attached to the corner of the bowl, the gas ejection nozzle 4 Then, gas can be sprayed into the mortar 3 to completely remove the powder remaining on the corners of the mortar. Due to this configuration, problems that occur when powder remains in the mortar after the powder recovery process (deterioration of yield due to a decrease in the powder recovery rate, and factors of powder quality deterioration due to double baking of the residual powder) Problem) can be effectively avoided.
気体噴出用ノズル４へ気体を供給する供給管８は三方弁７に接続されており、気体噴出用ノズル４へ気体を供給しない場合にも、常時、供給管８とは別のライン９への気体を流し続け、気体噴出用ノズル４へ気体を供給時には、三方弁７の切り替えを行って供給管８への気体供給を行う構成を有している。これにより、気体噴出用ノズル４からの気体噴出開始時における急激な圧力変動を抑制し、粉体への気体噴出圧を最適化することができる。 The supply pipe 8 for supplying gas to the gas ejection nozzle 4 is connected to the three-way valve 7, and even when no gas is supplied to the gas ejection nozzle 4, the supply pipe 8 is always connected to a line 9 different from the supply pipe 8. When the gas is continuously supplied and the gas is supplied to the gas ejection nozzle 4, the three-way valve 7 is switched to supply the gas to the supply pipe 8. Thereby, rapid pressure fluctuation at the start of gas ejection from the gas ejection nozzle 4 can be suppressed, and the gas ejection pressure to the powder can be optimized.
なお、他の実施形態として、固定配置された匣鉢の上方で粉体吸引ノズルを移動させる粉体吸引ノズル移動手段を備え、該粉体吸引ノズル移動手段に、垂直方向で段階的に移動し、同一高さの水平方向で連続的に移動する移動機構を備える構成とすることもできる。 As another embodiment, a powder suction nozzle moving means for moving the powder suction nozzle above the fixedly placed mortar is provided, and the powder suction nozzle moving means moves stepwise in the vertical direction. Further, a configuration in which a moving mechanism that continuously moves in the horizontal direction at the same height may be provided.
１ 粉体吸引ノズル
１１ ヘラ状の吸引口
２ 輸送ライン
３ 匣鉢
４ 気体噴出用ノズル
５ 匣鉢移動手段
６ 連続焼成炉
７ 三方弁
８ 供給管
９ ライン
DESCRIPTION OF SYMBOLS 1 Powder suction nozzle 11 Spatula-shaped suction port 2 Transport line 3 Bowl 4 Gas ejection nozzle 5 Bowl movement means 6 Continuous firing furnace 7 Three-way valve 8 Supply pipe 9 Line
Claims (4)
固定配置された粉体吸引ノズルの下方で匣鉢を移動させる匣鉢移動手段あるいは固定配置された匣鉢の上方で粉体吸引ノズルを移動させる粉体吸引ノズル移動手段を備え、
匣鉢移動手段あるいは粉体吸引ノズル移動手段は、匣鉢内の粉体を層状に吸引するために垂直方向で段階的に移動し、同一高さの水平方向で連続的に移動する移動機構を有することを特徴とする匣鉢で焼成された粉体の冷却装置。 A powder cooling device including a powder suction nozzle that sucks and collects powder in the mortar and a transport line that transports the powder sucked from the powder suction nozzle,
It comprises a mortar moving means for moving the mortar under the fixedly arranged powder suction nozzle or a powder suction nozzle moving means for moving the powder vacant nozzle above the fixedly arranged mortar,
The mortar moving means or powder suction nozzle moving means has a moving mechanism that moves stepwise in the vertical direction and continuously moves in the horizontal direction at the same height in order to suck the powder in the mortar in layers. A cooling device for a powder fired in a mortar.
The powder cooling apparatus according to claim 3, further comprising a three-way valve for controlling gas inflow into a supply pipe for supplying gas to the gas ejection nozzle.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010108092A JP5486394B2 (en) | 2010-05-10 | 2010-05-10 | Cooling device for powder baked in a mortar |
| CN201110100146XA CN102241395A (en) | 2010-05-10 | 2011-04-20 | Cooling device for powder burned by saggar |
| TW100114232A TW201200488A (en) | 2010-05-10 | 2011-04-25 | Cooling device for powder fired by using saggar |
| KR1020110039021A KR101786088B1 (en) | 2010-05-10 | 2011-04-26 | Apparatus for cooling powder fired in saggar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010108092A JP5486394B2 (en) | 2010-05-10 | 2010-05-10 | Cooling device for powder baked in a mortar |
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| Publication Number | Publication Date |
|---|---|
| JP2011236463A JP2011236463A (en) | 2011-11-24 |
| JP5486394B2 true JP5486394B2 (en) | 2014-05-07 |
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| JP2010108092A Active JP5486394B2 (en) | 2010-05-10 | 2010-05-10 | Cooling device for powder baked in a mortar |
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| JP (1) | JP5486394B2 (en) |
| KR (1) | KR101786088B1 (en) |
| CN (1) | CN102241395A (en) |
| TW (1) | TW201200488A (en) |
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| JP5550440B2 (en) * | 2010-05-10 | 2014-07-16 | 日本碍子株式会社 | Operation method of powder firing plant |
| CN102826555B (en) * | 2012-09-19 | 2014-08-20 | 邱富仁 | Powder cascade cooling device |
| JP6711776B2 (en) * | 2017-03-30 | 2020-06-17 | 日本碍子株式会社 | Powder recovery device |
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| JP2659850B2 (en) * | 1990-06-06 | 1997-09-30 | 三菱重工業株式会社 | Fine powder cooling device |
| JP3247820B2 (en) * | 1995-03-31 | 2002-01-21 | 川崎製鉄株式会社 | Quicklime powder recovery equipment |
| JP3386303B2 (en) * | 1995-12-21 | 2003-03-17 | 日機装株式会社 | Dry powder supply device |
| JP2004052020A (en) * | 2002-07-17 | 2004-02-19 | Matsushita Electric Ind Co Ltd | Method for manufacturing transducer consisting of tungsten heavy alloy |
| JP5039640B2 (en) | 2008-06-09 | 2012-10-03 | 株式会社ノリタケカンパニーリミテド | Pot for producing positive electrode active material for lithium ion battery and method for producing the same |
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| JP2011236463A (en) | 2011-11-24 |
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