JP2897904B2 - Classification equipment - Google Patents

Classification equipment

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Publication number
JP2897904B2
JP2897904B2 JP29963692A JP29963692A JP2897904B2 JP 2897904 B2 JP2897904 B2 JP 2897904B2 JP 29963692 A JP29963692 A JP 29963692A JP 29963692 A JP29963692 A JP 29963692A JP 2897904 B2 JP2897904 B2 JP 2897904B2
Authority
JP
Japan
Prior art keywords
classification
powder
casing
classifier
pipe
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.)
Expired - Fee Related
Application number
JP29963692A
Other languages
Japanese (ja)
Other versions
JPH06142615A (en
Inventor
辰郎 石川
Original Assignee
宇部興産株式会社
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 宇部興産株式会社 filed Critical 宇部興産株式会社
Priority to JP29963692A priority Critical patent/JP2897904B2/en
Publication of JPH06142615A publication Critical patent/JPH06142615A/en
Application granted granted Critical
Publication of JP2897904B2 publication Critical patent/JP2897904B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】本発明の分級設備は,セラミック
ス業界やフィラー業界で使用される化学品の原料粉末を
粗粉と微粉とに効率良く分離する分級設備であって,特
に原料粉末中の微粉収率を向上させる分級設備に関する
ものである。
BACKGROUND OF THE INVENTION The classification equipment of the present invention is a classification equipment for efficiently separating raw material powders of chemicals used in the ceramics industry and filler industry into coarse and fine powders. The present invention relates to a classification facility for improving fine powder yield.

【0002】[0002]

【従来の技術】分級装置は,粉砕機によって粉砕された
粉粒体を気流によって所要の粒度の粉体を選別し,製品
とすることを目的としており,その分級原理としては重
力分級,慣性力分級および遠心力分級に大別され,この
うち粉体の大量分級に好適な遠心力分級には,分級室の
形状を渦巻状にすることで気流を旋回させる自由渦式の
ものと,分級室内に設けられた回転羽根によって気流を
強制的に旋回させる強制渦のものと,これらふたつの合
成である自由渦と強制渦の共用式のものとがある。
2. Description of the Related Art A classifier is designed to select a powder having a required particle size from a pulverized material obtained by a pulverizer by an air current to produce a product. The principle of the classification is gravity classification and inertia force. Classification is classified into classification and centrifugal force classification. Among them, centrifugal force classification suitable for large-scale classification of powder is classified into a free vortex type in which the air flow is swirled by making the shape of the classification chamber spiral, and a classification chamber There are two types: a forced vortex in which the airflow is forcibly swirled by rotating blades provided in the vortex, and a shared vortex in which a free vortex and a forced vortex are combined.

【0003】また,分級装置には,粉砕機によって粉砕
された粉粒体を導いて粉砕機とは別置に独立して設けた
ものと,粉砕機に付属して設けられ粉砕室にある粉粒体
を気流搬送によって分級室に導入して分級する付属型の
ものとがあるが,後者のタイプの用途も広汎であり,粉
砕装置に付属して多く用いられている。
[0003] Further, a classifier is provided with a powder and granules pulverized by a pulverizer and provided separately and separately from the pulverizer, or a pulverizer provided with the pulverizer and provided in a pulverization chamber. There is an auxiliary type in which the granules are introduced into a classification chamber by air flow for classification, but the latter type is also widely used and is often used in conjunction with a pulverizer.

【0004】[0004]

【発明が解決しようとする課題】そして,最近では,粉
砕原料の多様化や高価格高品質の特殊材料における超微
粉の需要の拡大とともに製品の粒径分布に対する要求が
高度化してきており,適度に細かい平均粒径を指定する
ばかりでなく平均粒径よりはるかに細かい指定粒径の通
過量をある量比以内に留める製品を要求されることが次
第に多くなってきた。それにともなって,分級装置の性
能も一層高度化されたものが要求されるようになり,ミ
クロンオーダのかなり細かい原粉からさら細かな微粉を
抽出するとともに,分級後の粗粉中に混入する微粉を出
来るだけ少なくして微粉として回収するなど微粉収率の
向上が望まれるようになった。また,供給気流に対して
原料粉末が多い,いわゆる,高濃度分級では微粉収率の
低下とともに分級精度の悪化が問題となっていた。
Recently, with the diversification of raw materials for crushing and the demand for ultrafine powder in high-priced and high-quality special materials, the demand for the particle size distribution of products has become more sophisticated. There is an increasing demand for products that not only specify a finer average particle size but also keep the amount of the specified particle size that is much finer than the average particle size within a certain ratio. Along with this, the performance of the classifier has been required to be more advanced, and finer fine powders have been extracted from very fine raw powder on the order of microns, and fine powder mixed into the coarse powder after classification. It has been desired to improve the yield of fine powder by collecting as fine powder with as little as possible. In addition, in the case of so-called high-concentration classification in which the amount of the raw material powder is large relative to the supply airflow, there has been a problem that the fine powder yield decreases and the classification accuracy deteriorates.

【0005】[0005]

【課題を解決するための手段】そこで,これらの要求を
満たすため,本発明の分級設備は,分級装置と,該分級
装置に接続され分級後の粗粉を捕集するサイクロンと,
該サイクロンより排出される含塵ガスを該分級装置の供
給部へ再循環させる戻り管と,該戻り管途中に配設した
吸引ファンとからなる分級設備であって,該分級装置は
直立円筒状のケーシングの頂上中心に原粉の供給管を備
え,上部に原粉の分散板を固設し該分散板の直下に円周
複数個の分級羽根を周設した中空管からなる駆動軸を該
ケーシングの中心軸上に回転自在に軸支し,該分級羽根
で分級された微粉を含有する含塵空気を排出する微粉排
出口を該中空管下端に設けるとともに,前記分級羽根の
下方のケーシング内周側にドーナツ形状の水平円板を固
設し,該分級羽根と該水平円板との間に円周複数個の撹
拌羽根を該中空管に固設し,該撹拌羽根に対向するケー
シングに分級後の粗粉を排出する粗粉排出管を接線状に
連結し,該水平円板の下方のケーシングに該分級羽根に
流入する空気の導入管を設けた構成の分級設備とした。
Therefore, in order to satisfy these requirements, the classification equipment of the present invention comprises a classification device, a cyclone connected to the classification device for collecting coarse powder after classification, and
A classifier comprising a return pipe for recirculating dust-containing gas discharged from the cyclone to a supply section of the classifier, and a suction fan disposed in the middle of the return pipe, wherein the classifier has an upright cylindrical shape. A feed shaft for raw powder is provided at the center of the top of the casing, a dispersion plate for raw powder is fixed on the upper part, and a drive shaft consisting of a hollow tube around which a plurality of classifying blades are provided directly under the dispersion plate. At the lower end of the hollow tube, there is provided a fine powder discharge port which is rotatably supported on the central axis of the casing and discharges dust-containing air containing fine powder classified by the classification blade, at a lower portion of the classification blade. A donut-shaped horizontal disk is fixed on the inner peripheral side of the casing, and a plurality of circumferential stirring blades are fixed to the hollow tube between the classifying blade and the horizontal disk, facing the stirring blade. Tangentially connects a coarse powder discharge pipe for discharging the coarse powder after classification to the casing to be Was classified equipment configuration in which the inlet pipe of the air flowing converting said class blades of the lower casing.

【0006】[0006]

【作用】原粉は供給管より分散板上に投入され,円周均
等に分配されて分級室へ落下する。原料のうち微粉は中
空管を下方へ流れる空気気流の吸引力により分級羽根に
向かい分級点以下の微粉は微粉排出口より排出される。
一方,分級点以上の粗粉は水平円板上へ落下するか,あ
るいは,撹拌羽根に叩かれて粗粉回りに付着していた微
粉を分離するとともに撹拌羽根による旋回気流により粗
粉排出管より排出され,気流とともにサイクロンに入り
粗粉は捕集され,サイクロンより排出された含塵ガスは
戻り管を通って再び分散板上に吹付けられ,含塵ガス中
の微粉は再度分級羽根により分級作用をうける。
[Effect] The raw powder is introduced from the supply pipe onto the dispersion plate, distributed evenly around the circumference, and falls into the classification chamber. Among the raw materials, the fine powder is directed toward the classification blade by the suction force of the air flow flowing downward through the hollow tube, and the fine powder having a classification point or less is discharged from the fine powder discharge port.
On the other hand, coarse powder above the classification point falls onto a horizontal disk, or is beaten by a stirring blade to separate fine powder adhering around the coarse powder, and is swirled by the stirring blade from the coarse powder discharge pipe. The dust is discharged, enters the cyclone with the airflow, and the coarse powder is collected. The dust-containing gas discharged from the cyclone is sprayed again on the dispersion plate through the return pipe, and the fine powder in the dust-containing gas is classified again by the classification blade. Receive action.

【0007】[0007]

【実施例】以下,図面に基づいて本発明の詳細について
説明する。図1〜図4は本発明に係る実施例を示し,図
1は分級装置の縦断面図,図2は分級装置の平面図,図
3は分級装置内の粉体の流動を示す説明図,図4は分級
設備のフローシートである。図中の実線矢印は気流の流
れを示す。分級設備1は,図4に示すように,分級装置
2で分級後の粗粉を送り管100を介してサイクロン2
00へ送り粗粉を捕集するとともに,捕集後の含塵ガス
を吸引ファン300,戻り管400を経由して分級装置
2の供給部へ戻し,吸引ファン700の吸引力により分
級後の微粉は排出管500を経由してバッグフィルタ6
00で捕集される。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to the drawings. 1 to 4 show an embodiment according to the present invention, FIG. 1 is a longitudinal sectional view of a classifier, FIG. 2 is a plan view of the classifier, FIG. 3 is an explanatory view showing the flow of powder in the classifier, FIG. 4 is a flow sheet of the classification equipment. Solid arrows in the figure indicate the flow of the airflow. As shown in FIG. 4, the classification equipment 1 feeds the coarse powder after classification by the classification
00 to collect the coarse powder, return the collected dust-containing gas to the supply unit of the classification device 2 via the suction fan 300 and the return pipe 400, and use the suction force of the suction fan 700 to classify the fine powder after classification. Is the bag filter 6 via the discharge pipe 500.
Collected at 00.

【0008】一方,図1に示すように,分級装置2は直
立円筒状のケーシング2aの中心頂上に原粉の供給管1
6を備え,供給管16の直下の分級室2Xには装置の中
心軸上に中空管(駆動軸)3を軸受4,5を介して垂直
に軸承し,中空管3の下部にとりつけたVプーリ7a,
Vベルト8a,Vプーリ10aを経由して可変速電動機
9により回転駆動できるよう構成される。軸受4,5は
サポート6aに支持された架台6により固定保持され
る。中空管3の頂上には円錐形状の分散板15が固設さ
れるとともに分散板15の円周等分に複数個のスクレー
パ15aが半径方向放射状に垂設される。分散板15の
下方には複数(図1の実施例では3枚)の水平円板11
が多段に中空管3に周設されるとともに水平円板11間
には垂直の分級羽根12が円周等分に配設される。分級
羽根15の下方には,ドーナツ形状の水平円板80がケ
ーシング2aに固設され,水平円板80と分級羽根15
との間に水平円板80の上面を掃過するように垂直平板
からなる撹拌羽根70が複数個円周均等間隔で中空管3
に固設され,中空管3と一体的に回転するよう構成され
る。撹拌羽根70に対向するケーシング2aの周面の1
ケ所には,図2に示すように,ケーシング2aに接線状
に水平に粗粉排出管60が設けられる。符号90はケー
シング2aの下部に取り付けた柱脚である。サポート6
aにはケーシング2aの下方から撹拌羽根70や分級羽
根12に向かって上昇する気流の導入管50が円周複数
個取りつけられる。分級羽根12は半径方向放射状とす
るか,回転方向に対して外周側が後退する後退羽根とし
てもよい。
On the other hand, as shown in FIG. 1, a classifier 2 is provided with a raw powder supply pipe 1 on the top of the center of an upright cylindrical casing 2a.
6, a classifying chamber 2X immediately below the supply pipe 16 is provided with a hollow tube (drive shaft) 3 vertically mounted on bearings 4 and 5 on the central axis of the apparatus, and attached to the lower part of the hollow tube 3. V pulley 7a,
It is configured to be rotatable by a variable speed motor 9 via a V belt 8a and a V pulley 10a. The bearings 4 and 5 are fixed and held by a gantry 6 supported by a support 6a. A conical dispersion plate 15 is fixed on the top of the hollow tube 3, and a plurality of scrapers 15 a are vertically suspended radially around the dispersion plate 15. Below the dispersing plate 15, a plurality (three in the embodiment of FIG. 1) of horizontal disks 11
Are arranged around the hollow tube 3 in multiple stages, and vertical classifying blades 12 are arranged between the horizontal disks 11 at equal circumferential intervals. Below the classifying blade 15, a donut-shaped horizontal disk 80 is fixed to the casing 2a, and the horizontal disk 80 and the classifying blade 15 are fixed.
A plurality of stirring blades 70 made of a vertical plate are swept at equal circumferential intervals so as to sweep the upper surface of the horizontal disk 80 between the hollow tubes 3.
And is configured to rotate integrally with the hollow tube 3. 1 of the peripheral surface of the casing 2a facing the stirring blade 70
At this point, as shown in FIG. 2, a coarse powder discharge pipe 60 is provided tangentially and horizontally on the casing 2a. Reference numeral 90 denotes a column base attached to a lower portion of the casing 2a. Support 6
A plurality of circumferentially-introduced inlet pipes 50 for the airflow rising toward the stirring blade 70 and the classification blade 12 from below the casing 2a are attached to a. The classifying blades 12 may be radially radial, or may be retreating blades whose outer circumferential side retreats in the rotation direction.

【0009】次に,上記のように構成された分級設備1
ならびに分級装置2の作動について説明する。図3は分
級装置2内の粉体および空気の流れを示すもので,回転
する分散板15上に落下した原粉(粗粉および微粉)は
遠心力により円周均等分配され分散板15の外周より自
由落下する。一方,回転する中空管3と一体的に分級羽
根12と撹拌羽根70とが回転しており,導入管50を
上昇する気流は撹拌羽根70によって旋回しつつ分級羽
根12の内部へ流れる気流が常時形成されており,原粉
中の粗粉(図3中では白丸で表示)はこれらの気流に打
ち克って,あるいは,分級羽根12に跳ね飛ばされて下
流の吸引ファン300の吸引力により粗粉排出管より排
出されサイクロン200へ送られるとともに,原粉中の
微粉は分級羽根12の分級作用を受け,分級点以下の微
粉のみ流入空気とともに中空管3の中を下降して,吸引
ファン700の吸引力により微粉排出口20より排送さ
れ,集塵装置(バッグフィルタ600)で捕集される。
粗粉に付着した微粉は水平円板80へ落下したときの衝
撃や撹拌羽根70に叩かれた際に粗粉から離脱するから
微粉収率が一層向上する。分級点の調整は中空管3の回
転数で制御したり,あるいは中空管3の下流の風量およ
び粗粉排出管60を流れる風量をコントロールすること
によって行なう。粗粉排出管60および送り管100に
よって空気搬送された粗粉はサイクロン200へ入り粗
粉が捕集されるとともに,サイクロン200より排出さ
れた微粉を含んだ含塵ガスは吸引ファン300および戻
り管400を経由して分級装置2の集合管400aより
分級室2X内へ送られる。
Next, the classification equipment 1 constructed as described above.
The operation of the classification device 2 will be described. FIG. 3 shows the flow of the powder and air in the classifier 2. The raw powder (coarse and fine) dropped onto the rotating dispersion plate 15 is evenly distributed around the dispersion plate 15 by centrifugal force. Fall more freely. On the other hand, the classifying blade 12 and the stirring blade 70 rotate integrally with the rotating hollow tube 3, and the airflow that rises in the introduction tube 50 is swirled by the stirring blade 70 and flows into the classification blade 12. The coarse powder in the raw powder (indicated by white circles in FIG. 3) overcomes these air currents or is bounced off by the classifying blades 12 and is attracted by the suction force of the downstream suction fan 300. While being discharged from the coarse powder discharge pipe and sent to the cyclone 200, the fine powder in the raw powder is subjected to the classification action of the classification blade 12, and only the fine powder below the classification point descends in the hollow pipe 3 together with the inflowing air and is sucked. The powder is discharged from the fine powder discharge port 20 by the suction force of the fan 700 and collected by the dust collector (bag filter 600).
The fine powder adhering to the coarse powder is separated from the coarse powder when it is dropped on the horizontal disk 80 or struck by the stirring blade 70, so that the fine powder yield is further improved. The adjustment of the classification point is performed by controlling the rotation speed of the hollow tube 3 or controlling the air flow downstream of the hollow tube 3 and the air flow flowing through the coarse powder discharge tube 60. The coarse powder pneumatically conveyed by the coarse powder discharge pipe 60 and the feed pipe 100 enters the cyclone 200 where the coarse powder is collected, and the dust-containing gas containing the fine powder discharged from the cyclone 200 is supplied to the suction fan 300 and the return pipe. It is sent into the classification room 2X from the collecting pipe 400a of the classification device 2 via 400.

【0010】本発明に使用される分級装置2は,分級後
の微粉を装置中心下方へ導き,原料粉末を軸中心上方よ
り分散板の中心へ落下させる方式としており,原料の分
散が非常に優れ,また,大量の原粉供給に対しても均一
分散が安定している。したがって,このような分級装置
を閉回路に形成した分級設備においてタルク粉末を使用
した原粉の分級テストを実施した結果,分級装置2のみ
の分級結果に比べて,微粉収率(原粉重量に対する微粉
重量比)が約5〜10%向上した。
The classifying apparatus 2 used in the present invention has a system in which the fine powder after classification is guided below the center of the apparatus, and the raw material powder is dropped from above the axial center to the center of the dispersion plate. In addition, even when a large amount of raw powder is supplied, the uniform dispersion is stable. Therefore, as a result of performing a classification test of raw powder using talc powder in a classification facility in which such a classification device is formed in a closed circuit, the fine powder yield (based on the weight of the raw powder) is compared with the classification result of only the classification device 2. (Powder weight ratio) was improved by about 5 to 10%.

【0011】[0011]

【発明の効果】本発明の分級設備においては,センタフ
ィードを実施して原粉の分散均質化を図った分級装置を
使用して分級精度を向上するとともに,閉回路を形成し
て粗粉中の微粉の回収を図ったので微粉収率が向上す
る。また,高濃度粉体の分級も支障なく実施できる。
According to the classification equipment of the present invention, the classification accuracy is improved by using a classifier that performs center feed to achieve uniform dispersion of the raw powder, and a closed circuit is formed to form a coarse powder. As a result, the yield of the fine powder is improved. In addition, classification of high-concentration powder can be performed without any trouble.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の実施例に係る分級装置の縦断面図であ
る。
FIG. 1 is a longitudinal sectional view of a classification device according to an embodiment of the present invention.

【図2】本発明の実施例に係る分級装置の平面図であ
る。
FIG. 2 is a plan view of a classification device according to an embodiment of the present invention.

【図3】本発明の実施例に係る分級装置の流動説明図で
ある。
FIG. 3 is an explanatory diagram of a flow of a classification device according to an embodiment of the present invention.

【図4】本発明の実施例に係る分級設備のフローシート
である。
FIG. 4 is a flow sheet of a classification facility according to an embodiment of the present invention.

【符号の説明】[Explanation of symbols]

1 分級設備 2 分級装置 2a ケーシング 3 中空管 4 軸受 5 軸受 6 架台 7a Vプーリ 8a Vベルト 9 可変速電動機 10a Vプーリ 11 水平円板 12 分級羽根 15 分散板 15a スクレーパ 16 供給管 16a 原料集合管 20 微粉排出口 50 導入管 60 粗粉排出管 70 撹拌羽根 80 水平円板 90 柱脚 100 送り管 200 サイクロン 300 吸引ファン 400 戻り管 400a 集合管 500 排出管 600 バッグフィルタ 700 吸引ファン 1 Classifier 2 Classifier 2a Casing 3 Hollow tube 4 Bearing 5 Bearing 6 Mount 7a V pulley 8a V belt 9 Variable speed motor 10a V pulley 11 Horizontal disk 12 Classification blade 15 Dispersion plate 15a Scraper 16 Supply pipe 16a Raw material collecting pipe Reference Signs List 20 fine powder discharge port 50 introduction pipe 60 coarse powder discharge pipe 70 stirring blade 80 horizontal disk 90 column base 100 feed pipe 200 cyclone 300 suction fan 400 return pipe 400a collecting pipe 500 discharge pipe 600 bag filter 700 suction fan

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 分級装置と,該分級装置に接続され分級
後の粗粉を捕集するサイクロンと,該サイクロンより排
出される含塵ガスを該分級装置の供給部へ再循環させる
戻り管と,該戻り管途中に配設した吸引ファンとからな
る分級設備であって,該分級装置は直立円筒状のケーシ
ングの頂上中心に原粉の供給管を備え,上部に原粉の分
散板を固設し該分散板の直下に円周複数個の分級羽根を
周設した中空管からなる駆動軸を該ケーシングの中心軸
上に回転自在に軸支し,該分級羽根で分級された微粉を
含有する含塵空気を排出する微粉排出口を該中空管下端
に設けるとともに,前記分級羽根の下方のケーシング内
周側にドーナツ形状の水平円板を固設し,該分級羽根と
該水平円板との間に円周複数個の撹拌羽根を該中空管に
固設し,該撹拌羽根に対向するケーシングに分級後の粗
粉を排出する粗粉排出管を接線状に連結し,該水平円板
の下方のケーシングに該分級羽根に流入する空気の導入
管を設けた構成とした分級設備。
1. A classifier, a cyclone connected to the classifier for collecting coarse powder after classification, and a return pipe for recirculating dust-containing gas discharged from the cyclone to a supply part of the classifier. And a suction fan disposed in the middle of the return pipe, wherein the classification apparatus has a raw powder supply pipe at the center of the top of an upright cylindrical casing, and a raw powder dispersion plate is fixed on the upper part. A drive shaft formed of a hollow tube having a plurality of classifying blades provided directly below the dispersion plate is rotatably supported on the central axis of the casing, and the fine powder classified by the classifying blades is removed. At the lower end of the hollow tube, a fine powder discharge port for discharging the dust-containing air is provided, and a donut-shaped horizontal disk is fixedly provided on the inner peripheral side of the casing below the classification blade. A plurality of circumferential stirring blades are fixed to the hollow tube between the plate and the plate. A coarse powder discharge pipe for discharging the coarse powder after classification is tangentially connected to a casing facing the above, and a casing below the horizontal disk is provided with an inlet pipe for air flowing into the classification blade. Facility.
JP29963692A 1992-11-10 1992-11-10 Classification equipment Expired - Fee Related JP2897904B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP29963692A JP2897904B2 (en) 1992-11-10 1992-11-10 Classification equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29963692A JP2897904B2 (en) 1992-11-10 1992-11-10 Classification equipment

Publications (2)

Publication Number Publication Date
JPH06142615A JPH06142615A (en) 1994-05-24
JP2897904B2 true JP2897904B2 (en) 1999-05-31

Family

ID=17875157

Family Applications (1)

Application Number Title Priority Date Filing Date
JP29963692A Expired - Fee Related JP2897904B2 (en) 1992-11-10 1992-11-10 Classification equipment

Country Status (1)

Country Link
JP (1) JP2897904B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102580928A (en) * 2012-02-28 2012-07-18 潍坊汇成新材料科技有限公司 Method for classifying silicon carbide micro powder and classifying equipment of method

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3600578C1 (en) * 1986-01-10 1987-07-30 Schenk Gmbh Industriemesstechn Device for scanning a flat boundary surface of an object
AT229377T (en) * 1996-10-18 2002-12-15 Hosokawa Alpine Ag & Co VERTICAL AXIS WINIFIFIER
DE19643068C2 (en) * 1996-10-18 1998-10-29 Hosokawa Alpine Ag Air classifier with coarse material discharge ring
DE19643043C2 (en) * 1996-10-18 1998-11-05 Hosokawa Alpine Ag Centrifugal air classifier with radial fine material discharge
DE19643042C2 (en) * 1996-10-18 1998-07-30 Hosokawa Alpine Ag Vertical axis air classifier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102580928A (en) * 2012-02-28 2012-07-18 潍坊汇成新材料科技有限公司 Method for classifying silicon carbide micro powder and classifying equipment of method

Also Published As

Publication number Publication date
JPH06142615A (en) 1994-05-24

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