JPS6190754A - Ball for mill - Google Patents

Ball for mill

Info

Publication number
JPS6190754A
JPS6190754A JP21267084A JP21267084A JPS6190754A JP S6190754 A JPS6190754 A JP S6190754A JP 21267084 A JP21267084 A JP 21267084A JP 21267084 A JP21267084 A JP 21267084A JP S6190754 A JPS6190754 A JP S6190754A
Authority
JP
Japan
Prior art keywords
ball
mill
surface portion
milling
specific gravity
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
JP21267084A
Other languages
Japanese (ja)
Inventor
肇 山下
今井 吉彦
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.)
Coorstek KK
Original Assignee
Toshiba Ceramics Co 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 Toshiba Ceramics Co Ltd filed Critical Toshiba Ceramics Co Ltd
Priority to JP21267084A priority Critical patent/JPS6190754A/en
Publication of JPS6190754A publication Critical patent/JPS6190754A/en
Pending legal-status Critical Current

Links

Landscapes

  • Polishing Bodies And Polishing Tools (AREA)
  • Crushing And Grinding (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】[Detailed description of the invention]

1Lし房!Ii伍艷 この発明はミル用ボールに関するものひある。 m」り生且」L 周知のように、ボールミルは粉砕機の〜種であり、容器
の中に原料を入れて鋼球とどもに容器を回転させて、互
いの衝突に」:り原料を粉砕するものである。たとえば
、円筒形の容器の中にクロ18鋼製のボールを原料と一
緒に入れて、容器を6速回転させて、ボールと原料とを
ノjいに衝突させて、原料を粉砕するものである。乾式
あるいは湿式などの粉砕方法および粉砕時間の選択によ
り任意の微粉を作ることがでさる。。 光−」放り、渠ユ」−ζ1擾」11魚 しかしながら、従来のミル用ボールの材質(,1り[]
ム鋼などであ−)たため、摩粁が激しいため処即効率を
高めるには限界があった。 また、ボールから19・耗した粉末が不純物どlノて混
入ηる欠点があつ1.:、。 L吐匹町旺 この発明はこのような実情に鑑みてなされたものぐあり
、不純物の混入を防げるとともに処即効十を高めること
ので込るミル用ボールを(II!供することを目的とし
ている。 lの要旨 この[1的を達成する1、−めの本発明の要旨とすると
ころは、表面部分には窒化
1L room! This invention relates to a mill ball. As is well known, a ball mill is a type of crusher, in which raw materials are placed in a container and the container is rotated with steel balls so that they collide with each other. It is meant to be crushed. For example, a ball made of black 18 steel is placed in a cylindrical container along with the raw material, and the container is rotated at 6 speeds to cause the ball and the raw material to collide with each other to crush the raw material. be. Any desired fine powder can be produced by selecting a dry or wet grinding method and grinding time. . However, the material of the conventional mill ball (,1ri[]
Since the material was made of aluminum (such as steel), there was a limit to increasing the processing efficiency due to the intense abrasion. In addition, there is a drawback that powder worn out from the ball may be contaminated with impurities.1. :,. This invention was made in view of the above circumstances, and its purpose is to provide a ball for milling that prevents the contamination of impurities and increases the immediate effect of the treatment. The main point of the present invention is that the surface portion is nitrided.

【ノい素を設け、内部層には
表面部分よりも比重の大2\゛いアルミナ又はジルコニ
アを設【プたことを特徴とするミル用ボールにある。 」」え[解゛するための千 この発明は、非常に硬度の高い窒化けい素とそれよりも
比重の大きいジルコニア又はアルミナとを巧みに組み合
わ1!て、ボールミルの処理効率を格段に増大させるこ
とのできるものである。 本発明にあっては、表面部分の窒化けい素が原料に対す
る!Ii撃を大にし、さらに相乗的に比重の比較的大き
いジルコニア又はアルミナによりその衝撃力を増1)、
粉砕効果を高めるものなのである。 なお、ミル用ボールは通常は球状にするが、円柱形状そ
の伯を採用することもできる。 災】1引 1ス下、図面を参照して、この発明の実1i?i例を説
明づ゛る。 第1図【31この発明によるミル用ボールの一例を示(
)ている。ミル用ボールの表面部分1は窒化【ノい索で
構成されている。ミル用ボールの内部層2は本例では球
状になっており、全体が111較的比重の大きいジルコ
ニア又はアルミナに、J、って構成されている。 第2図1,1この発明によるミル用ボールの変形例を示
している3、表面部分3は窒化けい素で構成されている
。内部層4【2!木例で【J比重の大きいミルT1ニア
ヌはアルミノ゛の小片50集まりで構成i%れている。 各小片5の間隔は(f意に選ぶことができる。 表面部分1及び3のηみは使用状況に応じて適宜選定す
ることが出来る。 使用に際1)では、いずれの実施例においても、ミル容
器(図示せず)の中に多数のミル用ボールと所定部の原
r1を入れて高速回転あるいは振動して、互いに衝突ざ
【!′で、原131を粉砕する。 免1些11 ミル用ボールの表面部分1.3が窒化けい素で作られて
いるので、ボールの寿命が飛躍的に長くなったばかりで
なく、不純物の混入を大幅に低減できるようになった。
[The ball for milling is characterized in that the inner layer is made of alumina or zirconia having a specific gravity 2" higher than that of the surface portion. This invention is based on the skillful combination of extremely hard silicon nitride and higher specific gravity zirconia or alumina. Therefore, the processing efficiency of the ball mill can be significantly increased. In the present invention, the silicon nitride on the surface portion is the same as the raw material! Increasing the impact force, and synergistically increasing the impact force with zirconia or alumina, which has a relatively large specific gravity.1)
This enhances the crushing effect. Incidentally, the ball for milling is usually spherical, but it is also possible to adopt a cylindrical shape. [Disaster] Referring to the drawings at the bottom of the 1st quotation, what is the fruit of this invention 1i? Let me explain an example. Figure 1 [31 shows an example of a mill ball according to the present invention (
)ing. The surface portion 1 of the milling ball is composed of nitrided wire. In this example, the inner layer 2 of the mill ball is spherical, and is entirely made of zirconia or alumina, which has a relatively large specific gravity. FIG. 2 shows a modification of the milling ball according to the invention, the surface portion 3 being made of silicon nitride. Inner layer 4 [2! In the wood example, [Mill T1 Nianu, which has a high specific gravity, is made up of 50 small pieces of aluminium. The spacing between the small pieces 5 can be selected as desired. The distance between the surface portions 1 and 3 can be selected as appropriate depending on the usage situation. A large number of mill balls and a predetermined portion of the raw material R1 are placed in a mill container (not shown) and rotated or vibrated at high speed, causing them to collide with each other. ', the raw material 131 is crushed. Since the surface portion 1.3 of the mill ball is made of silicon nitride, not only the life of the ball has been dramatically extended, but also the contamination of impurities can be greatly reduced.

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

第1図はこの発明によるミル用ボールの一例を示す断面
図、第2図はこの発明の伯の例を示す断面図である。 1.3・・・・・・表面部分 2.71・・・・・・内部層 5・・・・・・・・・・・・小片 第1図
FIG. 1 is a cross-sectional view showing an example of a mill ball according to the present invention, and FIG. 2 is a cross-sectional view showing a further example of the present invention. 1.3...Surface portion 2.71...Inner layer 5...Small piece Fig. 1

Claims (1)

【特許請求の範囲】 表面部分には窒化けい素を設け、内部層に は表面部分よりも比重の大きいアルミナ又はジルコニア
を設けたことを特徴とするミル用ボール。
[Scope of Claims] A ball for milling, characterized in that the surface portion is provided with silicon nitride, and the inner layer is provided with alumina or zirconia having a higher specific gravity than the surface portion.
JP21267084A 1984-10-12 1984-10-12 Ball for mill Pending JPS6190754A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21267084A JPS6190754A (en) 1984-10-12 1984-10-12 Ball for mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21267084A JPS6190754A (en) 1984-10-12 1984-10-12 Ball for mill

Publications (1)

Publication Number Publication Date
JPS6190754A true JPS6190754A (en) 1986-05-08

Family

ID=16626451

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21267084A Pending JPS6190754A (en) 1984-10-12 1984-10-12 Ball for mill

Country Status (1)

Country Link
JP (1) JPS6190754A (en)

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