JP2009029431A - Hopper for preventing particle size segregation - Google Patents

Hopper for preventing particle size segregation Download PDF

Info

Publication number
JP2009029431A
JP2009029431A JP2007192311A JP2007192311A JP2009029431A JP 2009029431 A JP2009029431 A JP 2009029431A JP 2007192311 A JP2007192311 A JP 2007192311A JP 2007192311 A JP2007192311 A JP 2007192311A JP 2009029431 A JP2009029431 A JP 2009029431A
Authority
JP
Japan
Prior art keywords
hopper
segregation
powder
partition structure
preventing
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.)
Pending
Application number
JP2007192311A
Other languages
Japanese (ja)
Inventor
Katsumi Teramoto
克己 寺本
Juichi Yanagi
寿一 柳
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.)
MINABE KAKO KK
Japan Enviro Chemicals Ltd
Original Assignee
MINABE KAKO KK
Japan Enviro Chemicals 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 MINABE KAKO KK, Japan Enviro Chemicals Ltd filed Critical MINABE KAKO KK
Priority to JP2007192311A priority Critical patent/JP2009029431A/en
Publication of JP2009029431A publication Critical patent/JP2009029431A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hopper equipped with a structure capable of effectively preventing particle size segregation of a powder when it is used, and to provide a method for storing or discharging the powder utilizing the hopper. <P>SOLUTION: The hopper for storing and/or discharging the powder has a partitioning structure 2a for preventing an particle size segregation in the hopper 1. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、粉体を粒度偏析が生じることなく貯留及び/又は排出できるホッパーに関する。   The present invention relates to a hopper capable of storing and / or discharging powder without causing segregation of particle size.

粉体を取り扱う工程において、製品の一時的な貯留装置として、通常ホッパーが設置される。このようなホッパーは、上部開口部は粉体を受入れるために直径が大きくとられ、下部排出口は他の装置への接続あるいはバルブの配置等のためその直径は上部開口部よりも小さくとられるのが通常である。このように、上部と下部では直径が異なるため、ホッパーの一部または全体は円錐あるいは角錐の形状を呈している。   In the process of handling powder, a hopper is usually installed as a temporary product storage device. In such a hopper, the upper opening has a larger diameter for receiving powder, and the lower outlet has a smaller diameter than the upper opening for connection to other devices or valve arrangement. It is normal. As described above, since the upper part and the lower part have different diameters, a part or the whole of the hopper has a conical or pyramidal shape.

ところが、比重、粒子形状、粒径のうちの1あるいは2または全部が異なる粉体の混合物を均一にホッパーに供給しても、通常ホッパーから排出される際に内部で偏析が生じ、均一な混合物を取り出すことができないという問題点があった。   However, even if a mixture of powders having different specific gravity, particle shape, or particle size is uniformly fed to the hopper, segregation occurs inside when the mixture is discharged from the hopper. There was a problem that could not be taken out.

この問題を解決する方法として、二重管を設置して内容物の偏析を防止する原料装入方法が提案されている(特許文献1)。しかし、特許文献1では実質的にコークス等の粒子径の大きい粒子を対象としており、より粒子径の細かい粉体を対象した場合には偏析防止効果が充分ではない。そのため、種々の特性をもった粒子(特に、より細かい粒子)に適用することのできる偏析防止方法の開発が望まれていた。
特開平6−65620号公報
As a method for solving this problem, a raw material charging method for preventing segregation of contents by installing a double pipe has been proposed (Patent Document 1). However, Patent Document 1 targets particles having a substantially large particle diameter such as coke, and the effect of preventing segregation is not sufficient when powder having a smaller particle diameter is targeted. Therefore, development of a segregation preventing method that can be applied to particles having various characteristics (particularly finer particles) has been desired.
JP-A-6-65620

本発明は、使用時に粉体の粒度偏析(以下「偏析」ともいう)を効果的に防止することができる構造を具備してなるホッパー、及び該ホッパーを利用した粉体の貯留又は排出方法を提供することを目的とする。   The present invention provides a hopper having a structure capable of effectively preventing particle size segregation (hereinafter also referred to as “segregation”) of powder during use, and a method for storing or discharging powder using the hopper. The purpose is to provide.

ホッパー内で偏析を生じる原因は、ホッパー下部の円錐及び/又は角錐状になっている部分で、粒子が下向きの重力、ホッパー内壁から受ける斜め上向きの抗力、ホッパー内壁を滑り落ちる際に発生する逆向きの摩擦力など複雑な力を受けるためである。   The cause of segregation in the hopper is the cone and / or pyramid-shaped part at the bottom of the hopper, where the particles are directed downward gravity, the diagonal upward drag received from the hopper inner wall, and the reverse direction that occurs when sliding down the hopper inner wall This is because it receives a complicated force such as frictional force.

そこで本発明者らは、上記の課題を解決するためには、ホッパーの錘状部分と粒子との接触を極力少なくし、粒子の移動態様をできるだけ垂直方向(自然落下の方向)の移動に近づけることが重要であると考えた。そして、ホッパー内に複数の仕切構造を設けることにより、該ホッパー内での粒子の粒度偏析を効果的に抑制できることを見いだした。さらに、円筒及び/又は中空の角柱を組み合わせた仕切構造を用いることにより、該仕切構造をホッパー内への設置が容易となることを見出した。さらに検討を重ねて本発明を完成した。   Therefore, in order to solve the above-mentioned problems, the present inventors minimize the contact between the weight-like portion of the hopper and the particles as much as possible, and make the movement mode of the particles as close as possible to the movement in the vertical direction (the direction of natural fall). I thought it was important. And it discovered that the particle size segregation of the particle | grains in this hopper can be effectively suppressed by providing a some partition structure in a hopper. Furthermore, it has been found that the partition structure can be easily installed in the hopper by using a partition structure in which a cylindrical and / or hollow prism is combined. Further studies were made to complete the present invention.

すなわち、本発明は下記の偏析防止ホッパーを提供する。   That is, the present invention provides the following segregation preventing hopper.

項1. 粉体を貯蔵及び/又は排出するためのホッパーであって、ホッパー内部に偏析防止用の仕切構造を有してなる偏析防止ホッパー。   Item 1. A segregation preventing hopper, which is a hopper for storing and / or discharging powder, and has a partition structure for preventing segregation inside the hopper.

項2. 前記仕切構造が、円筒及び/又は中空の角柱を組み合わせたものである項1に記載の偏析防止ホッパー。   Item 2. Item 2. The segregation preventing hopper according to item 1, wherein the partition structure is a combination of a cylinder and / or a hollow prism.

項3. 前記仕切構造が、粉体がほぼ垂直方向に落下できるように円筒及び/又は中空の角柱を複数組み合わせたものである項1又は2に記載の偏析防止ホッパー。   Item 3. Item 3. The segregation preventing hopper according to Item 1 or 2, wherein the partition structure is a combination of a plurality of cylindrical and / or hollow prisms so that the powder can fall in a substantially vertical direction.

項4. 前記仕切構造が複数の円筒を組み合わせたものであり、該円筒の内径が5〜100mm程度である項1〜3のいずれかに記載の偏析防止ホッパー。   Item 4. Item 4. The segregation preventing hopper according to any one of Items 1 to 3, wherein the partition structure is a combination of a plurality of cylinders, and the inner diameter of the cylinders is about 5 to 100 mm.

項5. 前記仕切構造の下端の一部がホッパー内壁の斜面に接しているか又は近接している項1〜4のいずれかに記載の偏析防止ホッパー。   Item 5. Item 5. The segregation preventing hopper according to any one of Items 1 to 4, wherein a part of a lower end of the partition structure is in contact with or close to a slope of an inner wall of the hopper.

項6. 前記仕切構造の下端とホッパー内壁の斜面との距離が0〜5mm程度である項3に記載の偏析防止ホッパー。   Item 6. Item 4. The segregation preventing hopper according to item 3, wherein the distance between the lower end of the partition structure and the slope of the inner wall of the hopper is about 0 to 5 mm.

項7. 粉体を貯蔵及び/又は排出するためのホッパーの内部に、偏析防止用の仕切構造を設けることを特徴とする偏析防止ホッパーの製造方法。   Item 7. A method for producing a segregation preventing hopper, comprising a partition structure for preventing segregation inside a hopper for storing and / or discharging powder.

項8. 粉体を項1〜6のいずれかに記載の偏析防止ホッパーに装入して粉体を貯留又は排出する方法。   Item 8. A method for storing or discharging powder by charging the powder into the segregation prevention hopper according to any one of Items 1 to 6.

項9. 粉体を項1〜6のいずれかに記載の偏析防止ホッパーに装入してホッパー内での粉体の偏析を抑制する方法。   Item 9. A method for suppressing segregation of powder in the hopper by charging the powder into the segregation preventing hopper according to any one of Items 1 to 6.

本発明の偏析防止ホッパーは、比重、粒子形状、粒径の異なる種々の粉体を、経時的に粒度偏析を生じることなく貯留及び/又は排出することができる。ホッパー内の仕切構造として、既製の円筒材、中空の角柱等を用いることができる。仕切構造の形状はホッパーの形状に応じて調整することができ、また、該仕切構造は必要な数だけホッパー内に設置すればよい。そのため、本発明のホッパーは偏析防止のための施工が極めて容易である。   The segregation preventing hopper of the present invention can store and / or discharge various powders having different specific gravity, particle shape, and particle size without causing particle size segregation over time. As the partition structure in the hopper, a ready-made cylindrical material, a hollow prism, or the like can be used. The shape of the partition structure can be adjusted according to the shape of the hopper, and the partition structure may be installed in the hopper as many as necessary. Therefore, the hopper of the present invention is very easy to construct for preventing segregation.

以下、本発明の偏析防止ホッパーを、その一実施態様である図1〜4を参照して具体的に説明する。   Hereinafter, the segregation preventing hopper of the present invention will be specifically described with reference to FIGS.

本発明の偏析防止ホッパーは、粉体を貯蔵及び/又は排出するために用いられ、ホッパー内に偏析防止用の仕切構造を有してなる。   The segregation preventing hopper of the present invention is used for storing and / or discharging powder, and has a partition structure for preventing segregation in the hopper.

ホッパーとしては一般的なものを用いることができ、その形状は特に限定はない。例えば、粉体を供給する広い開口部と下部に狭口の排出口を有し、ホッパーの一部又は全体が円錐乃至角錐の形状を呈しているものが挙げられる。具体的には、開口部側が円筒形であり排出口にかけて円錐形状を有するもの(例えば、図1(a)及び(b))、開口部が多角形(特に四角形)であり排出口にかけて角錐形状を有するもの等が挙げられる。ホッパーは、粉体の貯留及び/又は排出を制御できるバルブを排出口付近に設けてもよい(図示せず)。ホッパーは上記の形状のものに限定されず、また、その大きさ、材質等も特に限定はない。   A general hopper can be used, and its shape is not particularly limited. For example, there may be mentioned one having a wide opening for supplying powder and a narrow outlet at the bottom, and a part or the whole of the hopper has a cone or pyramid shape. Specifically, the opening side is cylindrical and has a conical shape over the discharge port (for example, FIGS. 1A and 1B), and the opening is polygonal (particularly a quadrangle) and has a pyramid shape over the discharge port. The thing etc. which have are mentioned. The hopper may be provided with a valve in the vicinity of the discharge port (not shown) that can control the storage and / or discharge of the powder. The hopper is not limited to the above-mentioned shape, and the size, material, etc. are not particularly limited.

具体的には、図1(a)及び(b)で示される円錐形状のホッパーの場合、開口部の直径(内径)が200〜5000mm程度、さらに300〜2000mm程度のものが挙げられる。円錐部分の角度、すなわち円錐の頂点を含む垂直方向の断面において、頂点のなす角度は特に限定はないが、たとえば30〜60°のものが挙げられる。   Specifically, in the case of the conical hopper shown in FIGS. 1A and 1B, the diameter (inner diameter) of the opening is about 200 to 5000 mm, and further about 300 to 2000 mm. There is no particular limitation on the angle of the cone portion, that is, in the vertical cross section including the apex of the cone, but the angle formed by the apex is, for example, 30 to 60 °.

あるいは、角錐の形状のホッパーの場合、開口部の多角形(特に四角形)の対角線の距離が200〜5000mm程度、さらに300〜2000mm程度のものが挙げられる。角錐部分の角度は特に限定はないが、たとえば30〜60°のものが挙げられる。   Alternatively, in the case of a pyramid-shaped hopper, the distance between diagonal lines of a polygon (particularly a quadrangle) of the opening is about 200 to 5000 mm, and further about 300 to 2000 mm. The angle of the pyramid portion is not particularly limited, and examples thereof include 30 to 60 °.

仕切構造としては、ホッパーの開口部に供給された粉体が、該仕切構造から受ける抗力や該仕切構造との摩擦が極力抑えられる構造、即ち粉体がほぼ垂直に落下できる構造であればよい。例えば、円筒、中空の角柱等の形状が挙げられる(例えば、図1(a)及び(b))。これらの仕切構造を並列に複数組み合わせたものが好適である。具体的な仕切構造としては、複数の円筒及び/又は中空の角柱を束ねたもの、切り込みを入れた板を組み合わせて格子状(複数の中空の角柱が配列したものに相当)としたもの等が挙げられる。ここで、円筒とは、断面が真円の場合だけでなく楕円の場合も含まれる。また、角柱とは、三角柱、四角柱、五角柱等の多角柱のものも含まれる。また、同一ホッパー内に、円筒及び中空の角柱の両方を含む仕切構造であってもよい。   The partition structure may be any structure as long as the powder supplied to the opening of the hopper has a structure in which the drag received from the partition structure and the friction with the partition structure are suppressed as much as possible, that is, the powder can fall almost vertically. . For example, the shape of a cylinder, a hollow prism, etc. is mentioned (for example, Fig.1 (a) and (b)). A combination of a plurality of these partition structures in parallel is suitable. Specific examples of the partition structure include a bundle of a plurality of cylinders and / or hollow prisms, and a lattice shape (corresponding to an array of a plurality of hollow prisms) formed by combining cut plates. Can be mentioned. Here, the cylinder includes not only the case where the cross section is a perfect circle but also the case of an ellipse. In addition, the prisms include those of polygonal prisms such as triangular prisms, quadrangular prisms, pentagonal prisms. Moreover, the partition structure which contains both a cylinder and a hollow prism in the same hopper may be sufficient.

仕切構造を構成する円筒、中空の角柱等の大きさは、ホッパーのサイズや装入される粉体の粒子径等に応じて適宜選択することができる。   The size of the cylinder, the hollow prism, etc. that constitute the partition structure can be appropriately selected according to the size of the hopper, the particle diameter of the charged powder, and the like.

例えば、円筒の場合、該円筒の内径(楕円の場合は最大内径)は、一般には5〜100mm程度、好ましくは、10〜100mm程度の範囲から選ばれ、より具体的には、使用する粉体の質量平均粒径の500倍以下、好ましくは300倍以下、より好ましくは5〜200倍の範囲から選択することができる。なお、粉体の質量平均粒径とは、均一に混合した粉体をJIS K1474により測定した値である。   For example, in the case of a cylinder, the inner diameter of the cylinder (the maximum inner diameter in the case of an ellipse) is generally selected from the range of about 5 to 100 mm, preferably about 10 to 100 mm. More specifically, the powder to be used It is possible to select from a range of 500 times or less, preferably 300 times or less, more preferably 5 to 200 times the mass average particle size. The mass average particle diameter of the powder is a value obtained by measuring uniformly mixed powder according to JIS K1474.

また、中空の角柱の場合、その最大内径は、一般には5〜100mm程度、好ましくは、10〜100mm程度の範囲から選ばれ、より具体的には、使用する粉体の質量質量平均粒径の500倍以下、好ましくは300倍以下、より好ましくは5〜200倍の範囲から選択することができる。なお、中空の角柱の最大内径とは、角柱の断面における最も長い対角線の長さを意味する。   In the case of a hollow prism, the maximum inner diameter is generally selected from the range of about 5 to 100 mm, preferably about 10 to 100 mm, and more specifically, the mass-mass average particle size of the powder used. It can be selected from a range of 500 times or less, preferably 300 times or less, more preferably 5 to 200 times. The maximum inner diameter of the hollow prism means the length of the longest diagonal line in the cross section of the prism.

なお、仕切構造を構成する各円筒又は中空の角柱のサイズは、該仕切構造中において均一であっても異なっていてもよい。例えば、図1には均一な内径を有する複数の円筒が設置された形態が示されるが、これに限定されるものではない。   In addition, the size of each cylinder or hollow prism that forms the partition structure may be uniform or different in the partition structure. For example, FIG. 1 shows a configuration in which a plurality of cylinders having a uniform inner diameter are installed, but the present invention is not limited to this.

また、仕切構造を構成する円筒、中空の角柱等の数も、ホッパーのサイズや装入される粉体の粒子径等に応じて適宜選択することができる。通常、15〜2000個、さらに好ましくは25〜500個となるように選択できる。   Further, the number of cylinders, hollow prisms and the like constituting the partition structure can be appropriately selected according to the size of the hopper, the particle diameter of the charged powder, and the like. Usually, it can be selected to be 15 to 2000, more preferably 25 to 500.

仕切構造の上端は、粉体が均一に仕切構造内に装入されるようにフラット状(平坦状)であることが好ましい。なお、粉体の導入時において粉体がこぼれないようにするために、ホッパーの円筒側壁は仕切構造よりも上部に出ていることが好ましい。   The upper end of the partition structure is preferably flat (flat) so that the powder is uniformly charged into the partition structure. In order to prevent powder from spilling when the powder is introduced, it is preferable that the cylindrical side wall of the hopper protrudes above the partition structure.

また、仕切構造を構成する各円筒及び/又は中空の角柱の下端の一部がホッパー内壁の斜面に接しているか、或いは近接していることが好ましい(例えば、図2及び図3)。   In addition, it is preferable that a part of the lower end of each cylinder and / or hollow prism that forms the partition structure is in contact with or close to the slope of the inner wall of the hopper (for example, FIGS. 2 and 3).

具体的には、各円筒及び/又は中空の角柱の下端とホッパー内壁の斜面との距離が、0〜5mm程度の範囲あればよく、好ましくは0〜3mmである。或いは、上記距離は、粉体の質量平均粒径の10倍以下、好ましくは0〜5倍である。なお、粉体の質量平均粒径が1〜10mm程度と大きい場合は、仕切構造とホッパー斜面との間に該質量平均粒径の1〜3倍程度の隙間を設けてもよい。上記の距離は、図3に示されるように各円筒及び/又は中空の角柱の下端とホッパー内壁の斜面との垂直方向の距離(H)として把握される。   Specifically, the distance between the lower end of each cylinder and / or hollow prism and the slope of the inner wall of the hopper may be in the range of about 0 to 5 mm, preferably 0 to 3 mm. Alternatively, the distance is 10 times or less, preferably 0 to 5 times the mass average particle diameter of the powder. In addition, when the mass average particle diameter of the powder is as large as about 1 to 10 mm, a gap of about 1 to 3 times the mass average particle diameter may be provided between the partition structure and the hopper slope. The above distance is grasped as a vertical distance (H) between the lower end of each cylindrical and / or hollow prism and the slope of the inner wall of the hopper as shown in FIG.

特に、ホッパーの錘状部分と粒子との接触を極力少なくし、粒子の移動態様をできるだけ直管内の移動に近づけるために、仕切構造を構成する各円筒及び/又は中空の角柱の下端とホッパー内壁の斜面が接していること(H=0)が好ましい。   In particular, the lower end of each cylinder and / or hollow prism that forms the partition structure and the inner wall of the hopper in order to minimize the contact between the spindle-shaped portion of the hopper and the particles and to make the movement mode of the particles as close as possible to the movement in the straight pipe. It is preferable that the slopes are in contact (H = 0).

本発明の偏析防止ホッパーは、粉体を貯蔵及び/又は排出するためのホッパーの内部に、偏析防止用の仕切構造を配置するものであり、上記した仕切構造をホッパー内に設置乃至固定することにより製造される。   The segregation preventing hopper of the present invention is a segregation preventing partition structure disposed inside a hopper for storing and / or discharging powder, and the partition structure described above is installed or fixed in the hopper. Manufactured by.

本発明の偏析防止ホッパーに適用される粉体の種類は特に限定はなく、コークス、活性炭、炭化品などの炭素製品;セピオライト、ゼオライトなどの鉱物;イオン交換樹脂などの合成樹脂等が例示される。   The kind of powder applied to the segregation prevention hopper of the present invention is not particularly limited, and examples include carbon products such as coke, activated carbon, and carbonized products; minerals such as sepiolite and zeolite; synthetic resins such as ion exchange resins, and the like. .

特に、活性炭を用いた場合には、本品が吸着剤として使用されることからして、粒度分布や製品の均質性の維持が重要であるため、本発明の偏析防止ホッパーを用いることにより偏析が効果的に抑制される。これにより、小分けされた活性炭の各部分が当初設計した通りの吸着性能を発現することになる。また、種々の対象物質の吸着、浄化のため、活性炭とそれ以外の吸着剤を混合して使用する場合もあるが、この場合でもホッパー装入前の混合比率を維持したまま取り出すことができる。   In particular, when activated carbon is used, since this product is used as an adsorbent, it is important to maintain particle size distribution and product homogeneity. Therefore, segregation is prevented by using the segregation preventing hopper of the present invention. Is effectively suppressed. Thereby, each part of the subdivided activated carbon exhibits the adsorption performance as originally designed. Moreover, in order to adsorb and purify various target substances, activated carbon and other adsorbents may be mixed and used, but in this case, they can be taken out while maintaining the mixing ratio before hopper charging.

粉体の性状は特に限定はないが、例えば粉体の質量平均粒径(JIS K1474は、0.045〜10mm、さらに0.1〜4mmのものが挙げられ、充てん密度(JIS K1474法)は0.2〜0.9g/ml、さらに0.3〜0.7g/mlのものが挙げられる。   The properties of the powder are not particularly limited. For example, the mass average particle diameter of the powder (JIS K1474 is 0.045 to 10 mm, further 0.1 to 4 mm, and the packing density (JIS K1474 method) is Examples include 0.2 to 0.9 g / ml, and further 0.3 to 0.7 g / ml.

本発明の偏析防止ホッパーの具体的な使用方法の一例を図4に示す。円筒部及び円錐部を有するホッパーに円筒を複数束ねた仕切構造を配置した偏析防止ホッパー(図1)に、粉体を装入する。粉体は自重により仕切構造をほぼ垂直に落下するため、側壁での摩擦や抗力を大幅に減少させることができ、粉体の偏析が大幅に抑制される。仕切構造を通過した粉体は、ホッパーの錘状部分を経て排出口から排出される。錘状部分の粉体の通過は短時間であるため、ほとんど影響を受けない。   An example of a specific method of using the segregation preventing hopper of the present invention is shown in FIG. The powder is charged into a segregation preventing hopper (FIG. 1) in which a partition structure in which a plurality of cylinders are bundled is disposed on a hopper having a cylindrical portion and a conical portion. Since the powder falls almost vertically on the partition structure due to its own weight, friction and drag on the side wall can be greatly reduced, and segregation of the powder is greatly suppressed. The powder that has passed through the partition structure is discharged from the discharge port through the weight-shaped portion of the hopper. Since the passage of the powder in the conical portion is short, it is hardly affected.

また、偏析防止ホッパーに排出口にバルブを設けて、粉体を一旦貯留しておくこともできる。貯留後、粉体を排出する場合にも上記の効果が発揮されて粉体の偏析が大幅に減少する。   Further, the segregation preventing hopper can be provided with a valve at the discharge port to temporarily store the powder. When the powder is discharged after storage, the above effect is exhibited and the segregation of the powder is greatly reduced.

以下に実施例、比較例および試験例をあげて、本発明を具体的に説明する。
[実施例1]
図1に示すように、開口部の直径1300mm、円筒部の高さ300mm、円錐部の高さ500mmのホッパーに、内径80mmの円筒を複数束ねた仕切構造を配置した。このホッパーに、粒径範囲0.300〜0.125mm、質量平均粒径0.22mmの、JIS K1474の方法で測定した充てん密度が0.600g/mlであるやし殻炭化品と、同じ粒度範囲、同じ質量平均粒径であり、充てん密度が0.400g/mlであるやし殻活性炭をそれぞれ20kgずつ均一になるよう混合したものを投入した。次に、ホッパー下部より活性炭を排出し、排出量4kg毎に100gの試料を採取し、その充てん密度を測定した。この仕切構造を設けていないホッパーについても同様にして排出される活性炭の充填密度を測定した。その結果を図5に示す。
The present invention will be specifically described below with reference to examples, comparative examples and test examples.
[Example 1]
As shown in FIG. 1, a partition structure in which a plurality of cylinders having an inner diameter of 80 mm are bundled in a hopper having an opening diameter of 1300 mm, a cylindrical portion height of 300 mm, and a conical portion height of 500 mm. In this hopper, the same particle size as that of the carbonized product of coconut shell having a particle size range of 0.300 to 0.125 mm and a mass average particle size of 0.22 mm and a packing density measured by the method of JIS K1474 of 0.600 g / ml A mixture of 20 kg of coconut shell activated carbon having a range, the same mass average particle diameter, and a packing density of 0.400 g / ml was added. Next, activated carbon was discharged from the lower part of the hopper, 100 g of a sample was taken for every 4 kg discharged, and the packing density was measured. The packing density of the activated carbon discharged in the same manner was measured for the hopper not provided with the partition structure. The result is shown in FIG.

本実施例のホッパーから排出した場合は、活性炭の充てん密度が安定していたのに対し、仕切構造のないホッパーから排出した場合は、充てん密度の変動が大きかった。
[実施例2]
図1に示すように、開口部の直径900mm、円筒部の高さ200mm、円錐部の高さ400mmのホッパーに、一辺の長さ50mmの角柱からなる仕切構造を配置した。このホッパーに、粒径範囲0.500〜0.150mm、最も大きな粒子から細かい粒子にかけて粒径が小さくなるにつれて充てん密度が0.400g/mlから0.550g/mlに連続して変化している粒子を、均一に混合して30kg充てんした。次に、ホッパー下部より活性炭を排出し、排出量3kg毎に100gの試料を採取し、その充てん密度を測定した。この仕切構造を設けていないホッパーについても同様にして排出される活性炭の充填密度を測定した。その結果を図6に示す。
When discharged from the hopper of this example, the packing density of the activated carbon was stable, whereas when discharged from a hopper without a partition structure, the variation in packing density was large.
[Example 2]
As shown in FIG. 1, a partition structure composed of prisms each having a side length of 50 mm was arranged in a hopper having an opening diameter of 900 mm, a cylindrical portion height of 200 mm, and a conical portion height of 400 mm. In this hopper, the particle size range is 0.500 to 0.150 mm, and the packing density continuously changes from 0.400 g / ml to 0.550 g / ml as the particle size decreases from the largest particle to the smallest particle. The particles were mixed uniformly and filled with 30 kg. Next, the activated carbon was discharged from the lower part of the hopper, and a sample of 100 g was taken for every 3 kg discharged, and the packing density was measured. The packing density of the activated carbon discharged in the same manner was measured for the hopper not provided with the partition structure. The result is shown in FIG.

本実施例のホッパーから排出した場合は、活性炭の充てん密度が安定していたのに対し、仕切構造のないホッパーから排出した場合は、充てん密度の変動が大きかった。   When discharged from the hopper of this example, the packing density of the activated carbon was stable, whereas when discharged from a hopper without a partition structure, the variation in packing density was large.

本発明の偏析防止ホッパーを用いる方法によって、ホッパーから比重、粒子形状、粒径等の異なる粉体混合物を、偏析を生じることなく排出することができる。そのため、活性炭をはじめとする固体吸着剤の製造などの広範な分野で使用できる。   By the method using the segregation-preventing hopper of the present invention, powder mixtures having different specific gravity, particle shape, particle size, etc. can be discharged from the hopper without causing segregation. Therefore, it can be used in a wide range of fields such as production of solid adsorbents including activated carbon.

本発明の偏析防止ホッパーの具体的態様を示す斜視図である。(a)は円筒を複数組み合わせた仕切構造を採用したものであり、(b)は中空の角柱を複数組み合わせた(格子状)仕切構造を採用したものである。It is a perspective view which shows the specific aspect of the segregation prevention hopper of this invention. (A) employs a partition structure in which a plurality of cylinders are combined, and (b) employs a (lattice) partition structure in which a plurality of hollow prisms are combined. 図1(a)の偏析防止ホッパーの断面図を示す。Sectional drawing of the segregation prevention hopper of Fig.1 (a) is shown. 図1(a)の偏析防止ホッパーの拡大断面図を示す。The expanded sectional view of the segregation prevention hopper of Drawing 1 (a) is shown. 図1(a)の偏析防止ホッパーに粉体を装入する模式図である。It is a schematic diagram which inserts powder in the segregation prevention hopper of Fig.1 (a). 実施例1において、ホッパーに仕切構造を入れる場合と入れない場合の、排出される粉体の充てん密度の経時的変化の結果を示す。In Example 1, the result of the time-dependent change of the packing density of the discharged | emitted powder with and without putting a partition structure in a hopper is shown. 実施例2において、ホッパーに仕切構造を入れる場合と入れない場合の、排出される粉体の充てん密度の経時的変化の結果を示す。In Example 2, the result of the time-dependent change of the packing density of the discharged | emitted powder with and without putting a partition structure in a hopper is shown.

符号の説明Explanation of symbols

1 ホッパー本体
2a 仕切構造(円筒を組み合わせたもの)
2b 仕切構造(中空の角柱を組み合わせたもの)
3 ホッパーの円筒部
4 ホッパーの円錐部
5 ホッパーの開口部
6 ホッパーの排出口
7 粉体
8 コンベア
H 各円筒の下端とホッパー内壁の斜面との垂直方向の距離
1 Hopper body 2a Partition structure (combined cylinders)
2b Partition structure (combined hollow prisms)
3 Cylindrical portion of hopper 4 Conical portion of hopper 5 Opening portion of hopper 6 Discharge port 7 of hopper Powder 8 Conveyor H Vertical distance between the lower end of each cylinder and the slope of the inner wall of the hopper

Claims (9)

粉体を貯蔵及び/又は排出するためのホッパーであって、ホッパー内部に偏析防止用の仕切構造を有してなる偏析防止ホッパー。   A segregation preventing hopper, which is a hopper for storing and / or discharging powder, and has a partition structure for preventing segregation inside the hopper. 前記仕切構造が、円筒及び/又は中空の角柱を組み合わせたものである請求項1に記載の偏析防止ホッパー。   The segregation preventing hopper according to claim 1, wherein the partition structure is a combination of a cylinder and / or a hollow prism. 前記仕切構造が、粉体がほぼ垂直方向に落下できるように円筒及び/又は中空の角柱を複数組み合わせたものである請求項1又は2に記載の偏析防止ホッパー。   The segregation preventing hopper according to claim 1 or 2, wherein the partition structure is a combination of a plurality of cylindrical and / or hollow prisms so that the powder can fall in a substantially vertical direction. 前記仕切構造が複数の円筒を組み合わせたものであり、該円筒の内径が5〜100mm程度である請求項1〜3のいずれかに記載の偏析防止ホッパー。   The segregation preventing hopper according to any one of claims 1 to 3, wherein the partition structure is a combination of a plurality of cylinders, and the inner diameter of the cylinders is about 5 to 100 mm. 前記仕切構造の下端の一部がホッパー内壁の斜面に接しているか又は近接している請求項1〜4のいずれかに記載の偏析防止ホッパー。   The segregation preventing hopper according to any one of claims 1 to 4, wherein a part of a lower end of the partition structure is in contact with or close to a slope of an inner wall of the hopper. 前記仕切構造の下端とホッパー内壁の斜面との距離が0〜5mm程度である請求項3に記載の偏析防止ホッパー。   The segregation preventing hopper according to claim 3, wherein a distance between a lower end of the partition structure and a slope of the inner wall of the hopper is about 0 to 5 mm. 粉体を貯蔵及び/又は排出するためのホッパーの内部に、偏析防止用の仕切構造を設けることを特徴とする偏析防止ホッパーの製造方法。   A method for producing a segregation preventing hopper, comprising a partition structure for preventing segregation inside a hopper for storing and / or discharging powder. 粉体を請求項1〜6のいずれかに記載の偏析防止ホッパーに装入して粉体を貯留又は排出する方法。   A method for storing or discharging powder by charging the powder into the segregation preventing hopper according to any one of claims 1 to 6. 粉体を請求項1〜6のいずれかに記載の偏析防止ホッパーに装入してホッパー内での粉体の偏析を抑制する方法。   A method for suppressing segregation of powder in the hopper by charging the powder into the segregation preventing hopper according to any one of claims 1 to 6.
JP2007192311A 2007-07-24 2007-07-24 Hopper for preventing particle size segregation Pending JP2009029431A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2007192311A JP2009029431A (en) 2007-07-24 2007-07-24 Hopper for preventing particle size segregation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007192311A JP2009029431A (en) 2007-07-24 2007-07-24 Hopper for preventing particle size segregation

Publications (1)

Publication Number Publication Date
JP2009029431A true JP2009029431A (en) 2009-02-12

Family

ID=40400391

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2007192311A Pending JP2009029431A (en) 2007-07-24 2007-07-24 Hopper for preventing particle size segregation

Country Status (1)

Country Link
JP (1) JP2009029431A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105270876A (en) * 2015-11-11 2016-01-27 中冶南方工程技术有限公司 Segregation-resistant material flow adjusting device
CN107098081A (en) * 2017-06-15 2017-08-29 江苏金曼科技有限责任公司 A kind of collection device after dregs of beans crushing
JP2020158189A (en) * 2019-03-28 2020-10-01 住友金属鉱山株式会社 Hopper and firing device of positive electrode active material for secondary battery using the same
US11820587B2 (en) 2021-05-13 2023-11-21 Hyundai Motor Company Hopper for raw material powder and method for transferring raw material powder by using same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4548Y1 (en) * 1965-09-01 1970-01-06
JPS60161095U (en) * 1984-04-04 1985-10-25 播磨耐火煉瓦株式会社 Storage tank that prevents particle size segregation
JPS60171892U (en) * 1984-04-24 1985-11-14 播磨耐火煉瓦株式会社 Hopper that prevents particle size segregation
JPH0665620A (en) * 1992-08-18 1994-03-08 Sumitomo Metal Ind Ltd Method for charging raw material in bell-less blast furnace

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4548Y1 (en) * 1965-09-01 1970-01-06
JPS60161095U (en) * 1984-04-04 1985-10-25 播磨耐火煉瓦株式会社 Storage tank that prevents particle size segregation
JPS60171892U (en) * 1984-04-24 1985-11-14 播磨耐火煉瓦株式会社 Hopper that prevents particle size segregation
JPH0665620A (en) * 1992-08-18 1994-03-08 Sumitomo Metal Ind Ltd Method for charging raw material in bell-less blast furnace

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105270876A (en) * 2015-11-11 2016-01-27 中冶南方工程技术有限公司 Segregation-resistant material flow adjusting device
CN107098081A (en) * 2017-06-15 2017-08-29 江苏金曼科技有限责任公司 A kind of collection device after dregs of beans crushing
JP2020158189A (en) * 2019-03-28 2020-10-01 住友金属鉱山株式会社 Hopper and firing device of positive electrode active material for secondary battery using the same
US11820587B2 (en) 2021-05-13 2023-11-21 Hyundai Motor Company Hopper for raw material powder and method for transferring raw material powder by using same

Similar Documents

Publication Publication Date Title
JP2009029431A (en) Hopper for preventing particle size segregation
Jenike Denting of circular bins with eccentric drawpoints
JP2016528115A (en) Modified feed tray for porous mass filter rods
CN103466224B (en) Anti-segregation storage for dry-mixed mortar
Slíva et al. Study of the optimum arrangement of spherical particles in containers having different cross section shapes
WO2016181810A1 (en) Particle charging device
CN103204331A (en) Anti-isolation dry-mixed mortar finished product warehouse
CN1404914A (en) Catalyst loading method and apparatus
CA2563423A1 (en) Fluid bed granulation process
US3921351A (en) Segmented storage bin
KR101491487B1 (en) Rectangular cell-type silo which has grid-like structure
CA2853205A1 (en) Disposable container for powder material with an integrated sifter
JP3205358U (en) Powder distributor
CN203544788U (en) Dry mix mortar separation prevention storing bin
CN101590471A (en) A kind of self streaming gas-solid magnetic field fluidized bed sorting unit and method
Corrales et al. Preliminary experiments demonstrating a controllable granular demon
US20030235111A1 (en) Noise reducing silo
EP2823871B1 (en) Horizontal axial bed adsorber with system for compensation of the settling
CN208406845U (en) For removing the hybrid system of thickener impurity before charging
JP7068642B2 (en) Powder supply device
AU2015290288A1 (en) Device for feeding a metered supply of raw material into an aluminium electrolyser (variants)
CN221139468U (en) Grading plant is prevented to fodder elephant trunk
CN203283669U (en) Anti-segregation dry-mixed mortar finished product bin
Halford et al. Controlling Particle Segregation with a Specially Shaped Standpipe
JP6869513B2 (en) Granular material distributor

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20100420

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20120227

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20120306

A601 Written request for extension of time

Free format text: JAPANESE INTERMEDIATE CODE: A601

Effective date: 20120418

A602 Written permission of extension of time

Free format text: JAPANESE INTERMEDIATE CODE: A602

Effective date: 20120423

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20121002