A special agitator shaft with symmetrically arranged agitator pegs and sleeves of tungsten carbide for wear protection devel- Vertical, batch operation mill for the preparation of tungsten Ideal flow behaviour due to a special agitator peg arrange-ment and the hemispherically shaped chamber floor integrated screen plate for grinding media separationIntensive cooling through a double-wall grinding tank and cooled circulation pipeline
Product inlet via rotor / immersion tube system prevents back flow of grinding media into the feed line.
Generally, there are two ways to obtain nano-powders. A bottom-up manufacturing method (bottom up) for chemical methods, such as chemical precipitation, sol-gel process (sol-gel),... Another method is physical method, which changes the powder particles from big to small (top down), such as mechanical ball milling,... And so on.
The Development In 1963, the first vertical agitator was developed internationally, the first horizontal agitator was developed in 1975, the first horizontal agitator bead mill with eccentric disks was introduced to the public and the horizontal disc grinder was introduced, in 2004, which became the industry standard. In the following years, the grinding media separation systems, the geometry of the grinding disks and the various grinding chamber materials were further developed.
The grinding system pin nanomill shows the evolutionary develop- ment of system with the rotor-slotted pipe separating system. The enclosed horizontal agitator mill is designed for highest product throughput rates and possesses a pin grinding system for highest grinding intensity.
In 2011, we developed the first zirconia comminution chamber technology in China. It has no metal ion pollution and is used in batteries, pharmaceuticals, glazes, ink and food.
砂磨機由裝有研磨珠的研磨室組成,研磨室可以是靜止的,研磨珠由攪拌器攪動;或者,整個研磨室做復雜運動,帶動研磨珠運動。生產過程中,將藥物粗粉置于含表面活性劑/穩定劑的溶液中,經高速攪拌得到粗混懸液。然后其經砂磨機研磨,固體顆粒粒徑逐漸減小至納米級別,得到納米混懸液。
其中,產品細度主要由兩個基本參數決定———應力強度和接觸點數目。應力強度取決于研磨珠動能,能量足夠高才能達到研磨效果。接觸點數目決定了材料和研磨珠作用的次數,接觸點數目足夠多時產品才能達到良好的粒徑分布。為增加接觸點數目,可采用更小的研磨珠。根據經驗,產品粒子大小可達研磨珠大小的1/1000。一般使用100~200μm大小的研磨珠制備納米粒較簡單,較易規;a,同時成本也較低。
砂磨機具有的優點包括:很好地控制粒徑、大大降低成本、可大規模生產、活性成分零污染或極少污染、生產過程具重現性、產品滿足美國cGMP要求等。以砂磨機生產納米產品最重要的是選擇適合的研磨珠和研磨室,避免污染產品。研磨區域應以良好的材料鑄造。