介(jiè)紹(shào)濕法(fǎ)超細珠(zhū)(球(qiú))磨機(jī)的特點

　　2.分析珠(球)磨機中的研磨過程(chéng)的(dí)特征

　　珠(球)磨機是一(yī)種(zhǒng)用濕(shī)法進(jìn)行(háng)超(chāo)微細粉碎的(dí)設(shè)備(bèi)。該(gāi)珠(zhū)(球)磨(mó)機由一個(gè)帶軸的垂直(或水(shuǐ)平)研磨(mó)室組成。該(gāi)腔室(shì)包含(hán)一個(gè)轉子(zǐ)，該轉(zhuǎn)子(zǐ)由(yóu)一個帶(dài)有圓盤(pán)或(huò)杆(gān)的(dí)軸(zhóu)組(zǔ)成(chéng)。腔(qiāng)體(tǐ)充(chōng)滿(mǎn)了70-80%的(dí)玄武岩(yán)，玻璃或鋼珠。當(dāng)轉子旋(xuán)轉時(shí)，材(cái)料的(dí)固體顆粒(lì)由於在研(yán)磨的主體(tǐ)上(shàng)相互摩擦而被壓碎。生(shēng)產型(xíng)的(dí)珠(球)磨機以周(zhōu)期性(xìng)，連續(xù)式或(huò)循環(huán)式(shì)工作(zuò)。該研磨機具(jù)有篩(shāi)筒或(huò)狹縫以分離(lí)研磨珠(zhū)與懸浮(fú)液(yè)。產(chǎn)品(pǐn)的(dí)最終粒徑可以小於(yú)1μm(Rowe W.B.，2014; Salenko YU。，2008; Grining K.，Tarasenko M.，2017)。珠(zhū)磨機(jī)中的精(jīng)細(xì)研(yán)磨過(guò)程取(qǔ)決(jué)於(yú)許多操作參(cān)數(shù)。研(yán)究表(biǎo)明，重要因(yīn)素包括：機械能，比(bǐ)能耗，研(yán)磨(mó)體碰撞(zhuàng)能(néng)量，研(yán)磨體與產品的(dí)有效碰撞次(cì)數(shù)，以(yǐ)及(jí)顆粒在研(yán)磨(mó)機中的停(tíng)留(liú)時間(jiān)(Mende S. ，Rappl M.，2014; Rowe WB，2014)。此(cǐ)外(wài)，在研磨時，物質表麵(miàn)的氣(qì)體和液體殘(cán)餘(yú)物的(dí)解吸(xī)被破(pò)碎，結(jié)果(guǒ)固(gù)體(tǐ)的(dí)表麵(miàn)積(jī)發生變(biàn)化(huà)(Dr?gemeierR。，Leschonski K.，1994)。機械能是(shì)從轉(zhuǎn)子通過珠(zhū)子傳遞到懸浮液的能量。引入(rù)係(xì)統的(dí)能(néng)量(liáng)越多，破壞(huài)強(qiáng)結塊的(dí)可能性就(jiù)越(yuè)大(Dr?gemeierR。，Leschonski K.，1994)。能量可(kě)以以多(duō)種方(fāng)式引(yǐn)入：具(jù)有高(gāo)轉(zhuǎn)子速度和低(dī)扭矩，或(huò)反之亦然(rán)，在高扭矩和低(dī)旋轉速度(dù)下(xià)(Nakach，M.，Authelin，J.，Agut，C。2017)。

FEATURES OF A ULTRA-FINE GRINDING BY WET METHOD IN BEAD MILLS

　　2. Analysis of the features of the grinding process in a bead mill

　　The bead mill is an equipment for thin and superfine grinding, which occurs by a wet method.

　　The mill consists of a vertical (or horizontal) grinding chamber with a shirt. The chamber contains a rotor which consist of a shaft with disks or rods attached to it. The camera is filled with 70-80% beads from a basalt, glass or steel. When the rotor rotates, the solid particles of the material are crushed as a result of the friction on the body that is grinding, and each other. An industrial bead mill works in periodic, continuous or circulating modes. The mill has a sieve cartridge or a slit to separate the beads from the suspension. The size of the crushed product can reach less than 1 μm (Rowe W.B., 2014; Salenko YU., 2008; Grining K., Tarasenko M., 2017).The process of fine grinding in the bead mills depend to many operating parameters. The studies have shown that important factors are: mechanical energy, specific energy consumption, energy of collisions of grinding bodies, the number of effective collisions of grinding bodies with the product, as well as the residence time of particles in the mill (Mende S.,Rappl M., 2014; Rowe W.B.,2014). In addition, at grinding the desorption of gas and liquid residues from the surface of the substance is shattered, as a result the surface area of the solid changes (Dr?gemeier R.,Leschonski K., 1994).

　　Mechanical energy is the energy that is transmitted from the rotor through the beads to the suspension. The more energy is introduced into the system, the greater the likelihood of the destruction of strong agglomerates(Dr?gemeier R., Leschonski K., 1994). Energy can be introduced in several ways: with high rotor speed and low torque, or vice versa, at high torque and low rotational speed (Nakach, M., Authelin,J., Agut, C. 2017)