JPS5826245A - Measuring method for degree of fineness - Google Patents
Measuring method for degree of finenessInfo
- Publication number
- JPS5826245A JPS5826245A JP12361281A JP12361281A JPS5826245A JP S5826245 A JPS5826245 A JP S5826245A JP 12361281 A JP12361281 A JP 12361281A JP 12361281 A JP12361281 A JP 12361281A JP S5826245 A JPS5826245 A JP S5826245A
- Authority
- JP
- Japan
- Prior art keywords
- classification
- classifier
- weight
- fineness
- powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 8
- 239000000843 powder Substances 0.000 claims abstract description 38
- 239000002245 particle Substances 0.000 claims description 5
- 239000008187 granular material Substances 0.000 description 8
- 239000006185 dispersion Substances 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- 240000002853 Nelumbo nucifera Species 0.000 description 3
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 3
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 239000011362 coarse particle Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
- B07B7/08—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force
- B07B7/083—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force generated by rotating vanes, discs, drums, or brushes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
- B01D45/14—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by rotating vanes, discs, drums or brushes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
- B07B4/02—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall
- B07B4/025—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall the material being slingered or fled out horizontally before falling, e.g. by dispersing elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
- B07B9/02—Combinations of similar or different apparatus for separating solids from solids using gas currents
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
- G01N15/0272—Investigating particle size or size distribution with screening; with classification by filtering
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は粉末度を、精度よくかつ迅速に簡便に測定り、
オンラインシステムに組み込んでも使用で龜る粉末度測
定方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention measures fineness accurately, quickly, and easily.
The present invention relates to a method for measuring fineness that is difficult to use even if it is incorporated into an online system.
従来分級機を用−て、その分級機投入量と分級後収量（
例え社戻り粉収量）の重量比をもとにして粉末度を求め
る場合、分級機の性能上のｌｌ！＃もあって、５０≦分
離粒子径（以下分級点と称す）は１５−ｍ以上であり、
そのため重量比と粉末度との相関度が低くその改善が望
まれていた。Using a conventional classifier, the amount of input into the classifier and the yield after classification (
For example, when determining the fineness based on the weight ratio of powder yield (return powder yield), it is important to consider the performance of the classifier. Because of #, 50≦separated particle diameter (hereinafter referred to as classification point) is 15-m or more,
Therefore, the degree of correlation between weight ratio and powderiness is low, and improvement thereof has been desired.
本発明者らは、種々研究した結果、２〜１４μｍ、特に
５〜１０μｍの範囲内の任意の分級点で分級する仁とに
より、上記重量比と粉末度との相関度が非常に高いとの
知見を得て本発明を完成するに至った。As a result of various studies, the present inventors have found that the correlation between the above weight ratio and fineness is very high by classifying particles at any classification point within the range of 2 to 14 μm, especially 5 to 10 μm. Based on this knowledge, we have completed the present invention.
すなわち、本発明の要旨は、風力分級機を用いて、その
分級機投入量と分級後収量との重量比によ抄粉体の粉末
度を測定するに当り、分級点が２〜１４μｍの範囲内に
存在する条件で分級することを特徴とする粉体の粉末度
測定方法にある。That is, the gist of the present invention is that when measuring the fineness of paper powder using a wind classifier based on the weight ratio of the input amount to the classifier and the yield after classification, the classification point is in the range of 2 to 14 μm. A method for measuring the fineness of powder, which is characterized by classifying it under conditions existing in the powder.
本発明に使用する風力分級機としては渦流式分級機がよ
く、特に強制渦流式分級機があけられるが分級点が２〜
１４μｍの範囲に入るものであれｄどれでも使用できる
。As the wind classifier used in the present invention, a vortex classifier is preferred, and a forced eddy current classifier is particularly suitable, but the classification point is 2 to 2.
Any material within the range of 14 μm can be used.
上記渦流式分級機において、分級点が２〜１４μｍの範
■に入るようにするには、風力分級機の分級ローターの
回転数、風量等を調整すれげよい。In order for the above-mentioned eddy current classifier to have a classification point within the range of 2 to 14 μm, it is necessary to adjust the rotation speed, air volume, etc. of the classification rotor of the wind classifier.
分級点を２〜１４＃ｍに限る理由は、この範囲をはずれ
た場合、重量比と粉末炭との相関度が悪くなるからであ
る。The reason why the classification point is limited to 2 to 14 #m is that if it is outside this range, the correlation between the weight ratio and the powdered coal becomes poor.
この発明でいう粉末度とは、比表面積であ抄、また分級
後収量とは分級後の粗粉量、あるいは微粉量である。In the present invention, the fineness refers to the specific surface area, and the yield after classification refers to the amount of coarse powder or fine powder after classification.
粉末炭として比表面積を使い、工程管理を行う場合は予
め２〜１４μｍの範囲内の任意の点を分級点とし、粉末
度の興なる複数個の粉体サンプルを使って、その比表面
積と分級前後の重量比との関係式を求めておけば、この
風力分級機を用いて、分級前後の重量比を測定すること
によ抄、容易にそれに対応する比表面積を求めることが
できる。When controlling the process using the specific surface area of powdered coal, set an arbitrary point within the range of 2 to 14 μm as a classification point in advance, and use multiple powder samples of varying fineness to calculate the specific surface area and classification. If the relational expression between the weight ratio before and after classification is determined, the specific surface area corresponding to the weight ratio can be easily determined by measuring the weight ratio before and after classification using this wind classifier.
セメントの粉末度を測定する場合について、第１図と第
２図を参照して説明する。The case of measuring the fineness of cement will be explained with reference to FIGS. 1 and 2.
第１図におりて、サンプル用輸送機１としては、スクリ
ューコンベア、ベルトコンベア、するいはエアースライ
ド等を用いることができ、その末端は戻し経路３に接続
されてお抄、末端の手前にサンプリングゲー）！！設け
る。In Fig. 1, a screw conveyor, a belt conveyor, an air slide, etc. can be used as the sample transport device 1, and the end thereof is connected to the return path 3, and the sample is transported before the end. sampling game)! ! establish.
分級フィーダ４は、粉粒体の受槽４′および受槽から粉
粒体を排出するためのスクリューフィーダ４１ を備
え、ざらに受槽および排出スクリューフィーダ全体の重
量を測定し得る重量計５が設けられて−る。The classification feeder 4 includes a receiving tank 4' for powder and granular material and a screw feeder 41 for discharging the powder and granular material from the receiving tank, and is also provided with a weight scale 5 that can roughly measure the weight of the receiving tank and the discharge screw feeder as a whole. -ru.
分級機６は特訓昭５３〜７６４６６に開示されているも
のが好ましくその構造は第２図の通りである。この構造
をもつ分級機は、分級点を１４μｍ以下に膜室するには
好都合である。Preferably, the classifier 6 is the one disclosed in Japanese Special Training No. 53-76466, and its structure is as shown in FIG. A classifier having this structure is advantageous in making the classification point a membrane chamber of 14 μm or less.
７は粗粉用ホッパーであ抄、分級機６より排出された粗
粉を受けるためのものである。このホッパー７には重量
計８が設けられている。９は、排出経路である。Reference numeral 7 denotes a hopper for coarse powder for receiving the coarse powder discharged from the papermaking and classifier 6. This hopper 7 is provided with a weight scale 8. 9 is a discharge route.
１０は微粉捕集装置例えばバクフィルターであり、１１
はその排出経路、１２は風量コントロールパルプ、１３
は送風機である。10 is a fine powder collection device such as a bag filter; 11
is its discharge route, 12 is the air volume control pulp, 13
is a blower.
１４は各重量計５，８に連結された演算器で、これによ
って粉末度を演算する。14 is a computing unit connected to each weighing scale 5, 8, which computes the powderiness.
第２図は、上記分級機６の詳細図であって、１５はケー
シング、１６は粉体投入口、１７は分散羽根、１８は分
散円板、Ｄは粗粉取出し口、加は外方分級羽根、２１は
内方分級羽根、ｎは補助羽根、田は分級ロータ、冴はバ
ランスロータ、ｂは空気導入口、墓は微粉取出口、ｎは
渦流ケーシング、列は分級室、四は回転軸であ゛る。FIG. 2 is a detailed view of the classifier 6, in which 15 is a casing, 16 is a powder inlet, 17 is a dispersion blade, 18 is a dispersion disk, D is a coarse powder outlet, and K is an outer classification. Vane, 21 is inner classification vane, n is auxiliary vane, ta is classification rotor, sae is balance rotor, b is air inlet, grave is fine powder outlet, n is vortex casing, row is classification chamber, 4 is rotating shaft That's it.
この分級機を参照しながら、分級機構を説明すると次の
とお抄である。Referring to this classifier, the classification mechanism is explained as follows.
１）空気の流れについて番
第２図に示すように、空気人口５より吸込まれた空気は
、補助羽根ρにより円周方向の速度成分が与えられ、旋
回した状態で分級室列に入る。分級ロータ２およびバラ
ンスルータ別は回転軸四に固定され駆動モーターにより
駆動されている。したがって、空気は分級室部では補助
羽根ｎによ１１完全に分級ロータと同−周速を持つこと
になる。バランスロータスの役割は分級室の円周面での
均一化した半径方向の流れを−るとともに、分級機の圧
損をここで軽減することにある。1) Air Flow As shown in Figure 2, the air sucked in from the air intake 5 is given a velocity component in the circumferential direction by the auxiliary vane ρ, and enters the classification chamber row in a swirling state. The classification rotor 2 and the balance router are fixed to a rotating shaft 4 and driven by a drive motor. Therefore, the air in the classification chamber has the same circumferential speed as the classification rotor due to the auxiliary blade n. The role of the balance lotus is to equalize the radial flow on the circumferential surface of the classification chamber and to reduce the pressure loss of the classifier here.
バランスロータスを出た空気は１１１巻ケーシングｎに
よ砂分級機出口に導かれ、途中、サイクロン、バグフィ
ルタ等を介してブロアに連結されて−る。この時の空気
の流れは図中に矢印で示されて−る。The air leaving the balance lotus is guided to the sand classifier outlet by the 111-volume casing n, and is connected to a blower via a cyclone, bag filter, etc. on the way. The air flow at this time is indicated by arrows in the figure.
２）粉粒体の流れについて番
粉体投入口１６に適当な供、給手段で投入された粉粒体
原料は、空気流に乗った状態で分散羽根１７を通過する
間に円周面でほぼ均一に分割され、粉粒体の一次分散が
行なわれる。分散羽根１７からは電接線方向に射出され
た粉粒体は分散円板重上で二次分散され、完全な分散状
態で分級室部に供給される。ここで粉粒体の各粒子は回
転流による遠心力と半径方向流れによる抗力を受ける。2) Regarding the flow of powder and granular material The powder and granular raw material introduced into the powder inlet 16 by an appropriate feeding means is blown on the circumferential surface while passing through the dispersion blades 17 while being carried by the air flow. It is divided almost uniformly, and primary dispersion of the powder and granules is performed. The granular material ejected from the dispersing blade 17 in the electric tangential direction is secondarily dispersed on the dispersing disk, and is supplied to the classification chamber in a completely dispersed state. Here, each particle of the granular material is subjected to a centrifugal force due to the rotational flow and a drag force due to the radial flow.
これらの粒子のうち遠心力〉抗力の関係が成立つ粗−粒
子は分級ロータの外に送られ粗粉取出し口重よ抄ロータ
リパルプ等を用いてエアシールした状態で取出される。Among these particles, coarse particles for which the relationship of centrifugal force > drag force is satisfied are sent to the outside of the classification rotor and taken out in an air-sealed state using a paper rotary pulp or the like from the coarse powder outlet.
一方、遠心力〈抗力の関係が成立つ細かい粒子は空気流
に榮った状態でバランスロータス、渦巻ケーシングｎを
介して装置外部に運ばれ、すイクロン、Δグフィルタ等
の捕集装置によ砂採取される。On the other hand, fine particles that are subject to the relationship of centrifugal force (drag force) are transported to the outside of the device via the balance lotus and the spiral casing in an air flow, and are collected by a collection device such as a Suicron or a ΔG filter. collected.
この分級機の場合、分級点の調整は分級ロータコ及びバ
ランスロータスの回転数あるいは分級室列の通過風量を
変更することにより行なわれる。In the case of this classifier, the classification point is adjusted by changing the rotational speed of the classification rotor tacho and balance rotor or the amount of air passing through the classification chamber row.
このような測定装置を用いて、粉粒体の粉末度の測定は
、次のように行なわれる。Using such a measuring device, the fineness of a powder or granule is measured as follows.
製品となるべき粉粒体をＩＩＩ造工過よシ連続的にすン
プリングし、サンプル用輸送機１によ抄約５００ ｋｙ
／Ｈの能力で搬送する。さらに供給フィーダ４へのサン
プルの供給はサンプル用輸送機ｌに設けられたゲート２
の開放により行う。この場合のサンプリング量は約３（
） ｋｇで開放時間は３〜４分を要するが、それ以外の
時にはゲート２は閉ざされて、サンプルは戻し経路３に
入シ製品に合流する。Powder and granules to be made into products are continuously sampled through a III-forming process, and then transferred to sample transport machine 1 for approximately 500 ky.
/H capacity. Furthermore, the sample is supplied to the supply feeder 4 through a gate 2 provided on the sample transporter l.
This is done by opening the . In this case, the sampling amount is approximately 3 (
) kg and the opening time requires 3-4 minutes, otherwise the gate 2 is closed and the sample joins the incoming product in the return path 3.
供給フィーダ４においてサンプリング後およびサンプリ
ング前に重量を測定し、その差し引きでサンプルの正味
の重量を算出する。このサンプルをフィーダ４１により
徐々に分級機６に供給し、上述し念ように分級を行う。The weight is measured in the supply feeder 4 after and before sampling, and the net weight of the sample is calculated by subtracting the weight. This sample is gradually fed to the classifier 6 by the feeder 41, and classified as described above.
この際の分級点は５〜１０＃ｍとし、得られた粗粉は粗
粉用ホッパ７に入れ、ここで分級の前後の重量を測定し
、その差し引きにより正味の重量を出し、演算器によっ
て粉末度を算出する。測定後の粗粉は排出経路９に送る
。一方分級後の微粉は微粉捕集装置１０により捕集し、
排出経路１１へ送る。The classification point at this time is 5 to 10 #m, and the obtained coarse powder is put into the coarse powder hopper 7, where the weight before and after classification is measured, and the net weight is calculated by subtracting the weight. Calculate the fineness. The coarse powder after the measurement is sent to the discharge route 9. On the other hand, the fine powder after classification is collected by a fine powder collection device 10,
Send it to the discharge route 11.
演算器１４において粉末度は次式によって得られる。In the calculator 14, the fineness is obtained by the following equation.
ｙ ＝ ａ ｚ −１−ｂ
ｙ：比表面積（ブレーン値）ｏＩＩ／！ｐＸ：収率％
（＠ｓ −Ｗａ ） ／ （Ｗｕ−％））ｘｔｏＯＷｌ
：分級開始前のフィーダ重量
鳥 ：分級終了後の ｌ
Ｗ８：分級終了後の粗粉用ホッパー重量Ｗ４：分級開始
前の ｌ
ａ、ｂ：係数
上記分級機において、分級点を１．０〜１９．０岸ｍに
変えたときの分級機投入量に対する分級後粗装置の重量
比啄と比表面積（ブレーン値）との関係を第３図と下表
に示す。y = az -1-b y: Specific surface area (Braine value) oII/! pX: Yield%
(@s −Wa ) / (Wu−%))xtoOWl
: Weight of the feeder before the start of classification Bird: l after the end of classification W8: Weight of the hopper for coarse powder after the end of classification W4: l before the start of classification a, b: Coefficients In the above classifier, the classification point is 1.0 to 19. Figure 3 and the table below show the relationship between the weight ratio and specific surface area (Blaine value) of the coarsening device after classification with respect to the input amount of the classifier when changing to .0 shore m.
この結果より分級点を２〜１４μｍ、特に５〜１０μｍ
の範囲内で選べば粉末度との相関関係が高いことがわか
る。Based on this result, the classification point was set at 2 to 14 μm, especially 5 to 10 μm.
It can be seen that if it is selected within the range of , there is a high correlation with the fineness.
本発明によれば、粉体の粉末度を精度よく、かつ迅速に
簡便に測定することができるので、セメント等の粉体を
扱う工業においては、その製造工程中の粉末度を管理す
る場合に好適に応用することができる。According to the present invention, the fineness of powder can be measured accurately, quickly, and easily. Therefore, in industries that handle powder such as cement, it is possible to measure the fineness of powder during the manufacturing process. It can be suitably applied.
第１図は本発明方法を実施するための測定装置の概略図
、第２図は本発明方法において使用する分級機の縦断面
図であり、片面を省略して示す図、第３図は上記分級機
において、分級点を変化させたときの分級機投入量に対
する分級後粗装置の重量比（≦）と比表面積（ブレーン
値）との関係を示す図表である。
ｌ・・・サンプル用輸送機、２・・・サンプリングゲー
ト、４・・・分級フィーダ、 ５，８・・・重量計、６
・・・分級機、 ７・・・粗粉用ホッパー。
第２図
第３図
Ｘ：重量化ｏｌ。
第１頁の続き
■出 願 人 日清製粉株式会社
東京都中央区日本橋小網町１９番
１２号
■出 願 人 三協電業株式会社
東京都目黒区中央町１丁目８番
１１号Fig. 1 is a schematic diagram of a measuring device for carrying out the method of the present invention, Fig. 2 is a longitudinal sectional view of a classifier used in the method of the present invention, with one side omitted, and Fig. 3 is the above-mentioned 2 is a chart showing the relationship between the weight ratio (≦) of the crude device after classification and the specific surface area (Blaine value) to the input amount of the classifier when changing the classification point in the classifier. l... Sample transporter, 2... Sampling gate, 4... Classifying feeder, 5, 8... Weighing scale, 6
... Classifier, 7... Hopper for coarse powder. Figure 2 Figure 3 X: Weighted ol. Continued from page 1 ■Applicant: Nisshin Seifun Co., Ltd., 19-12 Nihonbashi Koami-cho, Chuo-ku, Tokyo ■Applicant: Sankyo Dengyo Co., Ltd., 1-8-11 Chuo-cho, Meguro-ku, Tokyo
Claims (1)
重量比により粉体の粉末度を測定するにあたり、５０％
分離粒子径が２〜１４μｍの範囲内に存在する条件で分
級することを特徴とする幹体の粉末度測定方法。When measuring the fineness of powder using a wind classifier based on the weight ratio of the amount input to the classifier and the yield after classification, 50%
A method for measuring the fineness of a trunk body, characterized by classifying under conditions such that the separated particle size is within a range of 2 to 14 μm.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12361281A JPS5826245A (en) | 1981-08-07 | 1981-08-07 | Measuring method for degree of fineness |
| GB08222583A GB2103373B (en) | 1981-08-07 | 1982-08-05 | Method of measuring fineness of powder |
| DE19823229789 DE3229789A1 (en) | 1981-08-07 | 1982-08-06 | METHOD FOR MEASURING THE FINE POWDERED MATERIAL |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12361281A JPS5826245A (en) | 1981-08-07 | 1981-08-07 | Measuring method for degree of fineness |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5826245A true JPS5826245A (en) | 1983-02-16 |
| JPH0140945B2 JPH0140945B2 (en) | 1989-09-01 |
Family
ID=14864903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12361281A Granted JPS5826245A (en) | 1981-08-07 | 1981-08-07 | Measuring method for degree of fineness |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS5826245A (en) |
| DE (1) | DE3229789A1 (en) |
| GB (1) | GB2103373B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2138574B (en) * | 1983-04-11 | 1986-08-06 | Bestobell | Slurry particle size analysis |
| CN104907252B (en) * | 2015-06-10 | 2017-01-11 | 洛阳矿山机械工程设计研究院有限责任公司 | Replacement method for rotor blades of powder concentrator |
| JP7358765B2 (en) * | 2019-04-04 | 2023-10-11 | 株式会社サタケ | Flour milling equipment monitoring system |
-
1981
- 1981-08-07 JP JP12361281A patent/JPS5826245A/en active Granted
-
1982
- 1982-08-05 GB GB08222583A patent/GB2103373B/en not_active Expired
- 1982-08-06 DE DE19823229789 patent/DE3229789A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0140945B2 (en) | 1989-09-01 |
| GB2103373B (en) | 1985-05-09 |
| DE3229789A1 (en) | 1983-02-24 |
| GB2103373A (en) | 1983-02-16 |
| DE3229789C2 (en) | 1987-05-07 |
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