JP2981492B2 - Milling method and milling equipment - Google Patents

Milling method and milling equipment

Info

Publication number
JP2981492B2
JP2981492B2 JP8007682A JP768296A JP2981492B2 JP 2981492 B2 JP2981492 B2 JP 2981492B2 JP 8007682 A JP8007682 A JP 8007682A JP 768296 A JP768296 A JP 768296A JP 2981492 B2 JP2981492 B2 JP 2981492B2
Authority
JP
Japan
Prior art keywords
milling
stirring
mill
discharge plate
ball mill
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 - Lifetime
Application number
JP8007682A
Other languages
Japanese (ja)
Other versions
JPH08229418A (en
Inventor
ラインハルト・アスムス
クラウス−ディーター・シュメール
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.)
Kloeckner Humboldt Deutz AG
Original Assignee
Kloeckner Humboldt Deutz AG
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 Kloeckner Humboldt Deutz AG filed Critical Kloeckner Humboldt Deutz AG
Publication of JPH08229418A publication Critical patent/JPH08229418A/en
Application granted granted Critical
Publication of JP2981492B2 publication Critical patent/JP2981492B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C21/00—Disintegrating plant with or without drying of the material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B02C17/20—Disintegrating members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B02C17/22—Lining for containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
    • B02C23/24—Passing gas through crushing or disintegrating zone
    • B02C23/32—Passing gas through crushing or disintegrating zone with return of oversize material to crushing or disintegrating zone
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)

Description

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

【０００１】[0001]

【発明の属する技術分野】この発明は、製粉方法と、そ
の方法に即して製粉原料を粉砕する、主として予備粉砕
した製粉原料を微粉化製粉または超微粉化製粉する設備
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a milling method and a facility for pulverizing a milling raw material in accordance with the method, mainly for pulverizing or ultra-micronizing a pre-milled milling raw material.

【０００２】[0002]

【従来の技術】とりわけセメント焼塊を製粉する際に
は、セメント製造用の鉱石や原料の製粉同様であるが、
今日では２段階製粉が次第に使われるようになり、ロ−
ラ圧搾機ないし高圧ロ−ラミルによる最終製粉も部分的
には適用して、製粉工程固有のエネルギ−消費を劇的に
低減させている（雑誌「ＺＫＧ４３（１９９０）７，第
３４７〜３５１ペ−ジ」）。2. Description of the Related Art Especially when milling cement ingots, it is the same as milling of ores and raw materials for cement production.
Today, two-stage milling is increasingly used,
The final milling by a press or high-pressure roller mill is also partially applied to dramatically reduce the energy consumption inherent in the milling process (ZKG43 (1990) 7, pages 347-351). Di).

【０００３】ロ−ラ圧搾機を用いた高圧粉砕法の適用に
より理論的には省力化が可能であるが、実際にはセメン
ト製粉では余り成功していない、と云うのは産物の粒度
特性が急峻過ぎるからであって、つまりは１０μｍ以下
の比較的少ない超微粒を含むような粒子の寸法等級の分
布が極めて狭く、一方、粒子形状は扁平で縁が鋭いこと
も一因である。その結果、加工性は低下し、標準強度を
得るために必要な添加水量は増加し、凝固開始が早す
ぎ、結局、コンクリ−ト中の水対セメント比率の悪化に
よって標準耐圧も減少することになる。このようなセメ
ント特性への否定的な影響は（最終微粉化した）ロ−ラ
圧搾セメントの粒度が在来のチュ−ブミルで製粉したセ
メントの粒度と同じ場合にも現われる。その原因は粒子
の縁の先鋭性に在る。この縁は丸める必要がある。これ
までそのためにチュ−ブミルが導入されたが、それには
よく知られたつぎのような欠点が在る。すなわち、エネ
ルギ−消費が大きく、必要設置面積が広く設備が大規模
で、製粉熱が高くて大きな騒音を発生する。Although it is theoretically possible to save labor by applying a high-pressure pulverization method using a roller pressing machine, in practice, cement milling has not been very successful because the particle size characteristics of the product are low. This is partly because the distribution of the particle size classes is so narrow that it contains too few ultrafine particles of less than 10 μm, while the particle shape is flat and the edges are sharp. As a result, the processability decreases, the amount of added water necessary to obtain the standard strength increases, the solidification starts too early, and eventually the standard pressure resistance decreases due to the deterioration of the water to cement ratio in the concrete. Become. Such a negative effect on the cement properties is also manifested when the particle size of the (finally micronized) roller pressed cement is the same as that of a conventional tube mill milled cement. The cause lies in the sharpness of the edges of the particles. This edge must be rounded. Heretofore, tube mills have been introduced for this purpose, but they have the following well-known disadvantages. In other words, the energy consumption is large, the required installation area is large, the equipment is large-scale, the heat of milling is high, and large noise is generated.

【０００４】撹拌式ボ−ルミルの摩砕によって粒子は摩
耗で丸められ、凝集体は粉砕され、とりわけ大型粒子が
除去されることは公知である。実際の仕上製粉では、つ
まり超微粒領域へと初期粒子をさらに粉砕するには、撹
拌式ボ−ルミルでさえ多大なエネルギ−の投入にたよる
しかない。このことは撹拌回転数を早めエネルギ−を大
いに浪費することを意味する。この現象は撹拌式ボ−ル
ミルが充分な予備粉砕をしないで最終微粉化に突入する
場合も現われる。[0004] It is known that by milling in a stirred ball mill the particles are rounded off by abrasion, the agglomerates are crushed and, in particular, large particles are removed. In actual finishing milling, that is, in order to further pulverize the initial particles into the ultrafine region, even a stirring ball mill depends on inputting a large amount of energy. This means that the stirring speed is increased and energy is wasted greatly. This phenomenon also appears when the stirred ball mill enters the final pulverization without sufficient preliminary grinding.

【０００５】たとえば中央撹拌部材としてスパイラルを
用いる乾式製粉用の撹拌式ボ−ルミルの公知の構造（ヨ
−ロッパ特許第０２１７９７７Ａ２号、ドイツ民主共和
国特許第２９６７９３６号）は、セメントを仕上製粉す
るためには限定的にしか使えない、と云うのは、槽の底
が閉じていれば、製粉設備の底からたとえば中空軸を介
してあるいは槽の外壁からもガスの流れが送りこまれ、
最終産物が上へ向って吐出されるからである。For example, a known structure of a stirring ball mill for dry milling using a spiral as a central stirring member (European Patent No. 0217977A2, German Patent No. 2967936) is used for finish milling cement. Can only be used in a limited way, because if the bottom of the tank is closed, gas flows from the bottom of the milling equipment, for example via a hollow shaft or from the outer wall of the tank,
This is because the final product is discharged upward.

【０００６】別の解決策では、最終産物が下に向い孔付
きあるいはスロット付き板を介して自由落下で吐出され
る（ドイツ民主共和国特許第２７５１８８号、ドイツ民
主共和国特許第２９１７０７号、ドイツ連邦共和国特許
公開公報第４２０２１０１号）が、これにも欠点があっ
て、それは、吐出し板の孔と、スパイラル撹拌機ないし
スパイラル撹拌機の下方に装着したクリ−ナとの間に、
粉体が食い込むおそれがあると云うことである。撹拌軸
はそのためそれに付随して摩耗したり、遮断されて吐出
し断面積を余計に狭めるおそれがある。[0006] In another solution, the end product is discharged by free fall through a perforated or slotted plate facing downward (DE 275188, DE 291707, DE). Patent Publication No. 4202021) also has a drawback, in that there is a problem between the hole in the discharge plate and the spiral stirrer or the cleaner mounted below the spiral stirrer.
That is, there is a possibility that the powder may bite. The agitating shaft may therefore be worn and consequently cut off, further reducing the discharge cross-sectional area.

【０００７】[0007]

【発明が解決しようとする課題】本発明は、予備粉砕機
と仕上粉砕機とからなり当初に述べた種類の製粉法とそ
の製粉設備とを改良して、公知の装置連結方式の持つ前
記欠点を除去あるいは低減することを課題とする。SUMMARY OF THE INVENTION The present invention is an improvement of a milling method of the kind mentioned at the outset consisting of a pre-mill and a finishing mill, and its milling equipment. It is an object of the present invention to remove or reduce.

【０００８】[0008]

【課題を解決するための手段】本課題は、本発明によ
り、製法上では請求項１による措置で、設備上では請求
項５による措置で解決する。本発明の好ましい実施形態
は下位請求項にて提案してある。This object is achieved according to the invention by means of the measures according to claim 1 in the production process and by means of the measures in claim 5 on the equipment. Preferred embodiments of the invention are proposed in the subclaims.

【０００９】本発明による製粉方法では、それ自体公知
のボ−ルミルの摩砕法が、先鋭縁を有しすでに充分予備
製粉してあるセメントの焼塊やその他の産物に適用され
る。In the milling process according to the invention, the ball milling method known per se is applied to incinerated ingots and other products which have sharp edges and are already sufficiently premilled.

【００１０】本発明による製法は、製粉原料、とりわけ
セメント焼塊を、５００μｍの網目寸法について高々３
％の篩残滓（Ｒ）を含む初期粉末になるまで予備粉砕
し、あるいは予め予備粉砕してから少なくとも１６００
ｃｍ2／ｇ、好ましくは２５００〜４０００ｃｍ2／ｇの
（ブレ−ヌ式計測法による）比表面積となるまで事前に
粗粉を分離したボ−ルミルの供給粉粒を摩砕工程に導い
て、迅速分散、迅速摩砕、製粉槽の高度の充填（製粉原
料充填率約８０％）による高いエネルギ−密度と云った
撹拌方式本来の利点を発揮させることを意図している。The process according to the invention is intended to reduce the milling raw material, in particular the cement ingot, to at most 3 for a mesh size of 500 μm.
% Or an initial powder containing at least 1600% of a sieve residue (R).
cm 2 / g, preferably 2500~4000cm 2 / g of lead in the mill grinding process to supply powder grains, - - ball separating the coarse powder in advance to a specific surface area (blurring by j type measuring method) It is intended to exhibit the inherent advantages of the stirring method such as rapid dispersion, rapid milling, and high energy density due to the high filling of the milling tank (milling raw material filling rate about 80%).

【００１１】とりわけ高圧粉砕法では微視き裂を持つ粒
子が得られるので、撹拌式ボ−ルミル内で（無き裂の）
初期粉末が都合良く省力化して粉砕される。In particular, particles having microcracks can be obtained by the high-pressure grinding method.
The initial powder is conveniently reduced in labor and crushed.

【００１２】本発明による製粉設備は、ロ−ラ圧搾機や
ロ−ラミルのような撹拌式ボ−ルミルを後置した予備粉
砕装置からなる。撹拌式ボ−ルミルは、１条または多条
ねじ式スパイラル撹拌機を備え、かつ底部側にはケ−シ
ングライナないし吐出し板を備える。該吐出し板は、ス
パイラル撹拌機のスパイラルねじの縁端領域と槽内壁と
の間にスロット状の吐出し孔を有する。The milling equipment according to the present invention comprises a preliminary pulverizing device followed by a stirring ball mill such as a roller press or a roller mill. Stirred ball mills are equipped with a single or multi-threaded screw stirrer and with a casing liner or discharge plate on the bottom side. The discharge plate has a slot-shaped discharge hole between the edge region of the spiral screw of the spiral stirrer and the inner wall of the tank.

【００１３】[0013]

【発明の実施の形態】以下、この発明の実施の形態を添
付図面に基づいて説明する。第１図によれば、供給粉
末、好ましくはセメントの焼塊を硫酸塩担体の含有の有
無に関わらず、あるいは追加製粉原料の有無に関わら
ず、すでにかなり高い微粉度に生成する段階に在る予備
粉砕機１４に送りこむ。硫酸塩担体ないし追加製粉原料
に関する共通の課題に下すべき判断は、これら物質の粒
度と製粉性とに左右される。３０μｍ以下の一定の粒度
を有するＲＥＡ石膏は、たとえば第２製粉段階、つまり
撹拌式ボ−ルミル１６へと配量してもよい。Embodiments of the present invention will be described below with reference to the accompanying drawings. According to FIG. 1, it is already in the stage of producing a feed powder, preferably a cement ingot, with or without a sulfate carrier, or with or without additional milling raw material, a considerably high fineness. It is sent to the preliminary crusher 14. The decisions to be made on a common issue with sulfate carriers or additional milling raw materials depend on the particle size and millability of these materials. REA gypsum having a constant particle size of 30 μm or less may be metered into, for example, a second milling stage, ie, a stirred ball mill 16.

【００１４】前置粗粉分離機１５は、脱凝集装置付きの
ロッドバスケット型粗粉分離機か、重力型空気式粗粉分
離機（Ｖ字型粗粉分離機）であって、２ｍｍ以上の大型
粒子はおろか主として約４００μｍ以上の粒子は撹拌式
ボ−ルミルに到達しないよう防護してある。前置粗粉分
離機１５内で分離した粗粉１８は再度第１製粉段階に送
りこまれる。The pre-rough powder separator 15 is a rod basket type coarse powder separator with a deagglomeration device or a gravity type pneumatic coarse powder separator (V-shaped coarse powder separator). Large particles, let alone particles of about 400 μm or larger, are protected from reaching the stirred ball mill. The coarse powder 18 separated in the preliminary coarse powder separator 15 is sent again to the first milling stage.

【００１５】前記粗粉分離機を用いてセメントを製粉す
るため、中間製粉工程を連結した最新のロ−ラ圧搾機と
ロ−ラミルのいずれかで、約４０００ｃｍ2／ｇまでの
中間産物の生産を行う。こうして少なくとも１６００ｃ
ｍ2／ｇ、好ましくは２５００〜４０００ｃｍ2／ｇの比
表面積になるまで予備粉砕した製粉原料が、最終微粉度
に製粉するため撹拌式ボ−ルミル１６に確実に送りこま
れることになる。Production of intermediate products up to about 4000 cm 2 / g in either a state-of-the-art roller press or a roller mill connected to an intermediate milling step to mill cement using the coarse powder separator. I do. Thus at least 1600c
The milling raw material preliminarily pulverized to a specific surface area of m 2 / g, preferably 2500 to 4000 cm 2 / g is surely sent to the stirring ball mill 16 for milling to the final fineness.

【００１６】第１粉砕段階のこのような最終産物の個別
粒子は、高圧による摩砕を何回も繰り返したため、多数
のき裂を含んでいる。したがって、この産物は撹拌式ボ
−ルミル１６での摩擦による次段階の粉砕にとくにうま
く適合している。撹拌式ボ−ルミル内では、在来のチュ
−ブミルと異なり、温度上昇がそれほど付随的に生じる
とは考えられない。したがって、硫酸塩担体への否定的
な影響は無い。したがって付属冷却装置は省略できる。The individual particles of such end product of the first milling stage contain numerous cracks due to repeated high pressure milling. The product is therefore particularly well suited for the subsequent grinding by friction in a stirred ball mill 16. In a stirred ball mill, unlike a conventional tube mill, the temperature rise is not expected to occur so much. Therefore, there is no negative effect on the sulfate carrier. Therefore, the attached cooling device can be omitted.

【００１７】上述したようにとくに高度に予備製粉した
場合、撹拌式ボ−ルミル１６は貫通式で駆動される。
（粗粉分離機を伴わない循環式製粉だと）中間産物の流
れが戻ってくるので、粒子寸法分布には必要に応じて影
響を与えやすい。As mentioned above, especially in the case of high-precision milling, the stirring ball mill 16 is driven in a through-type manner.
The return of the intermediate product (in the case of circulating milling without a coarse separator) tends to influence the particle size distribution as required, since the flow of intermediate products returns.

【００１８】第２図による撹拌式ボ−ルミル１６の循環
式連結方式には（高性能の粗粉分離機である）最終微粉
分離機２０を伴っており、所望の最終微粉度を難無く即
座に設定できる。予備粉砕機と撹拌式ボ−ルミル１６と
の流量を制御する２個のサ−ボル−プを切り離すため、
高性能粗粉分離機を伴う循環式連結方式では、第１粉砕
段階の最終産物２１を一時貯留するように奨められてい
る。このようにすれば、すでに予備製粉済みの追加製粉
原料２２ないし別のＲＥＡ石膏２３を撹拌式ボ−ルミル
１６中へ追加配量することによって、ロ−ラ圧搾機内の
循環を停止することができる。The circulating connection of the stirring ball mill 16 according to FIG. 2 is accompanied by a final finesseparator 20 (which is a high-performance coarsesseparator) so that the desired final fineness can be quickly and without difficulty. Can be set. In order to separate the two servo volves controlling the flow rate of the pre-mill and the stirring ball mill 16,
In a circulating connection with a high performance coarse separator, it is recommended to temporarily store the final product 21 of the first grinding stage. In this way, the circulation in the roller pressing machine can be stopped by additionally metering the additional milling raw material 22 or another REA gypsum 23 that has already been premilled into the stirring ball mill 16. .

【００１９】第３図には本発明により構成した第２粉砕
段階としての撹拌式ボ−ルミルを図示する。本発明によ
り公知装置の前記欠点は、製粉原料を上から投入し、底
部側ではスパイラル撹拌機２のスパイラルねじ縁端部と
槽内壁３との間に限って存在するスロット付きのケ−シ
ングライナないし吐出し板１を介し、それに付け加えて
槽壁内の側方吐出しスロット４を介して、吐出すことに
よって除去される。こうして、平滑な吐出し板１とクリ
−ナ５との間に僅かでも隙間の在るうちは、撹拌機ない
し底部側クリ−ナ５の間の詰りは防げる。FIG. 3 shows a stirring ball mill as a second pulverizing stage constructed according to the present invention. The disadvantages of the known device according to the invention are that the milling raw material is introduced from the top and, on the bottom side, a slotted casing liner or a slotted liner which exists exclusively between the spiral screw edge of the spiral agitator 2 and the inner wall 3 of the vessel. It is removed by discharge via the discharge plate 1 and additionally via the lateral discharge slots 4 in the tank wall. In this way, clogging between the stirrer and the bottom cleaner 5 can be prevented as long as there is a slight gap between the smooth discharge plate 1 and the cleaner 5.

【００２０】吐出し速度は好ましくは配管６を介して槽
内壁に送り込まれる空気流によって調節する。ほぼ１５
ｍｍ以上の大きな製粉用の球７を導入すると、吐出スロ
ットが吐出し板１の横断面全体に亘って分布している場
合さえあるので、クリ−ナ５から吐出し板１までの距離
はできるだけ少なくすれば詰るようにはならない。The discharge speed is preferably adjusted by the air flow fed into the inner wall of the tank via the pipe 6. Almost 15
When a large milling ball 7 mm or more is introduced, the discharge slots may be distributed over the entire cross section of the discharge plate 1, so the distance from the cleaner 5 to the discharge plate 1 should be as small as possible. If you reduce it, it will not clog.

【００２１】付属の撹拌要素８は、その吐出し板までの
最短距離が製粉用球の最大直径の２倍で、ほとんど槽内
壁３にまで達し、槽壁の側方スロット４と吐出し板１の
外側スロットとを通って確実に自由に吐出せるようにし
ている。The attached stirring element 8 has a shortest distance to the discharge plate twice as long as the maximum diameter of the milling sphere, almost reaches the inner wall 3 of the tank, the side slot 4 of the tank wall and the discharge plate 1. Through the outer slot of the nozzle.

【００２２】吐出し板１の中心には吐出しスロットを設
けていないので、撹拌軸が心出し用円錐体９によって心
出しできるようになり、この円錐体は底部側の軸方向の
軸受１０によって支承されている。この付帯的な軸受で
撹拌軸は高精度の同軸度で静粛回転を保証される。撹拌
機の駆動装置はいつも２段に支承され、片持ち軸受の形
に設計してあるので、継手１１は撹拌軸が心出しされた
状態で柔軟に構成されている。Since there is no discharge slot in the center of the discharge plate 1, the stirring shaft can be centered by a centering cone 9, which is formed by an axial bearing 10 on the bottom side. It is supported. This additional bearing guarantees quiet rotation of the stirring shaft with high precision coaxiality. Since the drive of the stirrer is always mounted in two stages and is designed in the form of a cantilever bearing, the joint 11 is constructed flexibly with the stirring shaft centered.

【００２３】製粉設備からの吐出しは（図示の無い）シ
ュ−トからの自由落下か、案内ホイ−ル１２を用いて行
われる。案内ホイ−ル１２は、第３図に示したように、
独立して駆動されるか、または撹拌軸を介して駆動され
る。The discharge from the milling equipment is carried out by free fall from a stall (not shown) or by using a guide wheel 12. The guide wheel 12 is, as shown in FIG.
Driven independently or driven via a stirring shaft.

【００２４】撹拌式ボ−ルミルを底部側から駆動するこ
とも可能である。その場合は、撹拌軸は吐出し板１を介
して誘導され遮断空気流で塵埃から保護する（図示な
し）。撹拌軸は吐出し板１の下方で支承されるか、ある
いは別に導入する駆動装置で支承する。この種の駆動装
置の変更は、装置が幾らか丈高であって４００ＫＷ以上
の大駆動電力の場合は有益である。It is also possible to drive the stirring ball mill from the bottom side. In that case, the stirring shaft is guided via the discharge plate 1 and is protected from dust by a blocking airflow (not shown). The stirring shaft is mounted below the discharge plate 1 or by a separately introduced drive. This type of drive modification is beneficial if the device is somewhat tall and has a large drive power of 400 KW or more.

【００２５】製粉槽内壁３は、鋼と耐摩耗性鋼鋳物とセ
ラミックスとのいずれかからなるケ−シングライナ１３
で保護されている。このケ−シングライナ１３は、円周
方向に閉じた環を構成する円環体を含んでいるので、こ
の円環体が製粉槽の内壁３を伝って下方へ流れる製粉原
料を製粉用球７とともに内向きに加圧することになる。
このような仕方で製粉槽の内壁３へ流れが直接短絡する
ことは避けられるのである。The inner wall 3 of the milling tank is formed of a casing liner 13 made of one of steel, a wear-resistant steel casting, and ceramics.
Protected. Since the casing liner 13 includes an annular body that forms a ring that is closed in the circumferential direction, the annular body flows the milling raw material flowing downward along the inner wall 3 of the milling tank together with the milling balls 7. It will be pressurized inward.
In this way, a direct short circuit of the flow to the inner wall 3 of the milling tank can be avoided.

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

【図１】本発明における製粉設備連結方式を示す図であ
る。FIG. 1 is a view showing a flour mill connection system in the present invention.

【図２】本発明における他の製粉設備連結方式を示す図
である。FIG. 2 is a diagram showing another method of connecting flour milling equipment in the present invention.

【図３】本発明による第２製粉段階としての撹拌式ボー
ルミルを示す断面図である。FIG. 3 is a sectional view showing a stirring ball mill as a second milling stage according to the present invention.

【符号の説明】[Explanation of symbols]

１ 吐出し板 ２ スパイラル撹拌機 ３ 槽内壁 ４ 吐出しスロット ５ クリ−ナ ６ 配管 ７ 製粉用球 ８ 撹拌要素 ９ 心出し用円錐体 １０ 軸受 １１ 継手 １２ 案内ホイ−ル １３ ケ−シングライナ １４ 予備粉砕機 １５ 前置粗粉分離機 １６ 撹拌式ボ−ルミル １７ セメントの焼塊 １８ 粗粉 １９ 最終微粉 ２０ 最終微粉分離機 ２１ 第１粉砕段階の最終産物 ２２ 追加製粉原料 ２３ ＲＥＡ石膏 DESCRIPTION OF SYMBOLS 1 Discharge plate 2 Spiral stirrer 3 Tank inner wall 4 Discharge slot 5 Cleaner 6 Pipe 7 Milling ball 8 Stirring element 9 Centering cone 10 Bearing 11 Joint 12 Guide wheel 13 Casing liner 14 Preliminary grinding Machine 15 Preliminary Coarse Powder Separator 16 Stirred Ball Mill 17 Cemented Ingot 18 Coarse Powder 19 Final Fine Powder 20 Final Fine Powder Separator 21 Final Product of First Grinding Stage 22 Additional Milling Raw Material 23 REA Gypsum

───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) B02C 17/00 - 17/24 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. 6 , DB name) B02C 17/00-17/24

Claims (14)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】 製粉原料を粉砕する方法、特に予備粉砕
した製粉原料を微粉化製粉または超微粉化製粉する方法
において、５００μｍの網目寸法について高々３％の篩
残滓（Ｒ）を含む初期粉末となるまで、あるいは少なく
とも１６００ｃｍ2／ｇ、好ましくは２５００〜４００
０ｃｍ2／ｇのブレ−ヌ式計測法による比表面積となる
まで製粉原料を予備粉砕した後に、予備粉砕した製粉原
料を撹拌式ボ−ルミルによる摩砕法によって最終微粉度
となるまで製粉することを特徴とする製粉方法。In a method for pulverizing a raw material for milling, particularly a method for pulverizing or ultra-micronizing preliminarily milled raw material, an initial powder containing at most 3% of a sieve residue (R) with a mesh size of 500 μm. Until at least, or at least 1600 cm 2 / g, preferably 2500-400
After preliminarily pulverizing the milling raw material to a specific surface area by the Braine measurement method of 0 cm 2 / g, the preliminarily milled raw material is ground to a final fineness by a grinding method using a stirring ball mill. Characteristic milling method. 【請求項２】 最終微粉度になるまで製粉した底部領域
の製粉原料を、直立型撹拌式ボ−ルミルから吐出するこ
とを特徴とする請求項１の方法。2. The method according to claim 1, wherein the milling material in the bottom region milled to a final fineness is discharged from an upright stirring ball mill. 【請求項３】 予備粉砕を、ロ−ラ圧搾機すなわち高圧
ロ−ラ破砕機またはロ−ラ破砕機すなわちロ−ラミルで
行うことを特徴とする請求項１または２の方法。3. The method according to claim 1, wherein the preliminary grinding is carried out by using a roller press, ie, a high-pressure roller crusher or a roller crusher, ie, a roller mill. 【請求項４】 撹拌式ボ−ルミルを、貫通式、粗粉分離
機を伴わない循環式、及び粗粉分離機を伴う循環式のい
ずれかの方式で駆動することを特徴とする請求項１〜３
のいずれかの方法。4. The stirring ball mill is driven by any one of a penetration type, a circulation type without a coarse powder separator, and a circulation type with a coarse powder separator. ~ 3
Either way. 【請求項５】 撹拌式ボ−ルミルの底部領域にある粉体
の吐出しを支援するために流体を吹き込むことを特徴と
する請求項１〜４のいずれかの方法。5. A method according to claim 1, wherein a fluid is blown in to assist in discharging the powder in the bottom region of the agitated ball mill. 【請求項６】 予備粉砕装置を有し、それから吐出した
粉体が後置した製粉設備内で最終微粉度に達するまで製
粉される製粉設備において、該製粉設備が、１条または
多条ねじ式スパイラル撹拌機（２）を有する撹拌式ボ−
ルミルとして構成され、このスパイラル撹拌機には、吐
出し孔を備えたケ−シングライナないし吐出し板（１）
を設け、吐出し孔がスパイラル撹拌機（２）のスパイラ
ルねじの縁端領域と槽内壁（３）とに設けられているこ
とを特徴とする製粉設備。6. A flour mill having a pre-milling device, wherein the powder discharged from the mill is milled until the final fineness is reached in a subsequent mill, wherein the mill is a single or multi-thread screw type. Stirring-type bowl with spiral stirrer (2)
This spiral stirrer is provided with a casing liner or discharge plate (1) having discharge holes.
And a discharge hole is provided in the edge region of the spiral screw of the spiral stirrer (2) and the inner wall of the tank (3). 【請求項７】 直径１５ｍｍ以上の製粉ボ−ルを用いる
場合、吐出し孔を吐出し板（１）の全断面に亘って分布
させることを特徴とする請求項６の製粉設備。7. The milling equipment according to claim 6, wherein, when a milling ball having a diameter of 15 mm or more is used, the discharge holes are distributed over the entire cross section of the discharge plate (1). 【請求項８】 槽内壁（３）内の吐出し板（１）の直上
方には円錐形をなして外向きに広がる孔が吐出しスロッ
ト（４）として設けてあることを特徴とする請求項６ま
たは７の製粉設備。8. A discharge slot (4) having a conical shape and extending outward immediately above the discharge plate (1) in the inner wall (3) of the tank. Item 6. The flour milling equipment according to Item 6 or 7. 【請求項９】 撹拌式ボ−ルミルの下方領域には空気流
を供給する配管が設けてあることを特徴とする請求項６
〜８のいずれかの製粉設備。9. A pipe for supplying an air flow is provided in a lower region of the agitated ball mill.
Any one of the milling equipment of any one of -8. 【請求項１０】 スパイラル撹拌機（２）には、底部側
に１個以上の撹拌要素（８）を設け、該要素の吐出し板
（１）との間隔が少なくとも粉体粒子の最大直径の２倍
に達することと、撹拌要素（８）の外縁と槽内壁との間
には僅かな隙間が創出されていることとを特徴とする請
求項６〜９のいずれかの製粉設備。10. The spiral stirrer (2) is provided with one or more stirring elements (8) on the bottom side, the distance between the elements and the discharge plate (1) being at least the maximum diameter of the powder particles. The flour milling facility according to any one of claims 6 to 9, characterized in that the number is doubled and a slight gap is created between the outer edge of the stirring element (8) and the inner wall of the tank. 【請求項１１】 スパイラル撹拌機（２）の撹拌軸は、
駆動装置が上置きなら駆動装置側で２重に片持ちで支承
されるか、もしくは付随的に底部側でも支承され、後者
の場合には撹拌軸は可撓性継手（１１）によって撹拌機
駆動装置と連結していることを特徴とする請求項６〜１
０のいずれかの製粉設備。11. The stirring shaft of the spiral stirrer (2) comprises:
If the drive is mounted on the upper side, it is supported double-cantileverly on the drive side or additionally on the bottom side, in which case the stirrer shaft is driven by the stirrer by means of the flexible joint (11). 6. The device according to claim 6, wherein said device is connected to a device.
0 flour milling equipment. 【請求項１２】 駆動装置が底部側に設けてあり、撹拌
軸が吐出し板（１）の下方で支承されていることを特徴
とする請求項６〜１０のいずれかの製粉設備。12. The milling equipment according to claim 6, wherein a driving device is provided on the bottom side, and the stirring shaft is supported below the discharge plate (1). 【請求項１３】 吐出し板（１）の下方には、シュ−ト
もしくは独立に駆動されるかまたは撹拌軸に連結されて
いる回転案内ホイ−ル（１２）を設けてあることを特徴
とする請求項６〜１２のいずれかの製粉設備。13. A swivel or independently driven or rotatable guide wheel (12) connected to a stirring shaft is provided below the discharge plate (1). The flour milling equipment according to claim 6. 【請求項１４】 ケ−シングライナ（１３）を備えた槽
内壁（３）が耐摩耗性鋼製鋳物またはセラミックスで内
張りされ、ケ−シングライナ（１３）が円環体を備えて
槽内壁（３）の円周方向に閉じた環を形成していること
を特徴とする請求項６〜１３のいずれかの製粉設備。14. A tank inner wall (3) provided with a casing liner (13) is lined with a wear-resistant steel casting or ceramics, and the casing liner (13) is provided with an annular body and has a tank inner wall (3). The flour milling equipment according to any one of claims 6 to 13, wherein a ring closed in the circumferential direction is formed.
JP8007682A 1995-01-20 1996-01-19 Milling method and milling equipment Expired - Lifetime JP2981492B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19501616A DE19501616A1 (en) 1995-01-20 1995-01-20 Grinding esp. of pre-ground cement clinker
DE19501616.5 1995-01-20

Publications (2)

Publication Number Publication Date
JPH08229418A JPH08229418A (en) 1996-09-10
JP2981492B2 true JP2981492B2 (en) 1999-11-22

Family

ID=7751903

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8007682A Expired - Lifetime JP2981492B2 (en) 1995-01-20 1996-01-19 Milling method and milling equipment

Country Status (4)

Country Link
JP (1) JP2981492B2 (en)
DE (1) DE19501616A1 (en)
DK (1) DK5796A (en)
FR (1) FR2729587B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101947483A (en) * 2010-08-12 2011-01-19 河南醒狮高新技术股份有限公司 Method for forming blade material particles special for wire-electrode cutting of semiconductor material and ultra-hard material

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103433097B (en) * 2013-08-16 2015-06-03 云南云铜锌业股份有限公司 Accurate ball loading and adding method in dry ore grinding
CN105964346B (en) * 2016-03-18 2019-03-05 安徽工程大学 A kind of method for visualizing for matching technology for ball-grinding machine abrading-ball quantized level
CN105854998B (en) * 2016-04-01 2019-04-05 安徽工程大学 A method of it developing abrading-ball intelligent level and matches controller
DE102017115994A1 (en) 2017-07-17 2019-01-17 Thyssenkrupp Ag Two-stage milling cycle and method for producing a ground product by means of a two-stage grinding
CN110193406B (en) * 2019-04-07 2024-05-28 锦州旭日新材料科技有限公司 Vertical winnowing pulverizer for zirconium boiling chlorination industry
CN113304829B (en) * 2021-06-09 2022-08-19 哈尔滨商业大学 Device for separating coarse powder and fine powder after crushing traditional Chinese medicine components
CN116174131B (en) * 2023-04-28 2023-07-07 广东兆通玻塑科技有限公司 High-strength expanded and vitrified microsphere material grinding device and method

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2032736C3 (en) * 1970-07-02 1975-07-24 Polysius Ag, 4723 Neubeckum Process for grinding coarse-grained minerals
US4325514A (en) * 1975-12-05 1982-04-20 English Clays Lovering Pochin & Company Limited Comminution of minerals
US4860957A (en) * 1988-03-29 1989-08-29 Lidstroem Lars Treatment of middlings
DD275188A1 (en) * 1988-08-30 1990-01-17 Dessau Zementanlagenbau Veb EXTRACTION DEVICE FOR TURMUCHTMUEHLE
DE3901436C2 (en) * 1989-01-19 2001-01-25 Deutz Ag Process for operating a circular grinding plant for grinding and drying moist material
AU626758B2 (en) * 1990-07-23 1992-08-06 Kubota Corporation Pulverizer
EP0510890B1 (en) * 1991-04-23 1995-07-26 Ecc International Limited Dry grinding
DE4202101A1 (en) * 1992-01-27 1993-07-29 Zementanlagen Und Maschinenbau Crushing mill for wet or dry material - has nozzles which direct air or water on material to prevent it from caking
SE502566C2 (en) * 1992-12-04 1995-11-13 Cementa Ab Methods for relaying cement
DE4306930B4 (en) * 1992-07-25 2005-11-10 Khd Humboldt Wedag Ag Plant for the comminution of regrind
DE4224704C2 (en) * 1992-07-25 2002-01-31 Kloeckner Humboldt Wedag Process and plant for crushing regrind
CH688849A5 (en) * 1993-02-25 1998-04-30 Buehler Ag Agitator mill.
DE9310007U1 (en) * 1993-06-29 1994-02-10 Schäfer, Horst, 99762 Niedersachswerfen Arrangement for the production of semolina and shot products

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101947483A (en) * 2010-08-12 2011-01-19 河南醒狮高新技术股份有限公司 Method for forming blade material particles special for wire-electrode cutting of semiconductor material and ultra-hard material

Also Published As

Publication number Publication date
FR2729587B1 (en) 1999-06-11
FR2729587A1 (en) 1996-07-26
JPH08229418A (en) 1996-09-10
DE19501616A1 (en) 1996-07-25
DK5796A (en) 1996-07-21

Similar Documents

Publication Publication Date Title
JP2532231B2 (en) Energy efficient grinding method and apparatus
JPS6243731B2 (en)
CN103331194A (en) Method of processing nepheline syenite powder to produce an ultra-fine grain size product
JP2981492B2 (en) Milling method and milling equipment
JPH04338244A (en) Device and method for grinding by vertical roller mill
JP3624307B2 (en) Crushing classification method and apparatus
US4522343A (en) Micronized grinding apparatus
CN212441533U (en) Airflow crusher for preparing titanium dioxide matting agent
US5354002A (en) Double separator for sorting particulate material
CN209423734U (en) A kind of multiple groups tup micronizer
JP2579984B2 (en) Method for producing granular material and apparatus for producing the same
JP2823099B2 (en) Fine grinding equipment
JP2003265975A (en) Dry media stirring type pulverizer
US5058813A (en) Method for comminuting brittle material to be ground
CN212237538U (en) Take superfine powder discharge apparatus of overflow
JP2882132B2 (en) Vertical crusher
CN208449496U (en) It is used to prepare the milling apparatus of particle dispersion
US2821344A (en) Self-classifying pulverizer
JPH074556B2 (en) Air flow type pulverizing and classifying device for fine powder
JP2918679B2 (en) Dry media mill
CA1256414A (en) Vertical grinding mill
CN215541323U (en) Horizontal impact mill
JP2673833B2 (en) Vertical crusher
CN2293382Y (en) Internal circulation fluid energy milling machine
JPH02126945A (en) Wet vertical type grinder