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.
1973年,锂离子电池中首次嵌入碳材料,碳材料因制备方法、前驱体和热处理等不同而具备不同的结晶度、化学组成和微观结构,早期锂离子电池负极采用的碳材为石油焦、沥青等一类软碳材料,石墨化碳,无定型碳。
软质碳材料结晶度较低、晶粒尺寸小、晶面间距较大,虽然碳层之间存在有序堆叠但长程无序,与石墨相比具备比较优异的大电流放电性能,石墨是层状晶体,由无数石墨片层在范德华力作用下堆叠形成。石墨含有两个不同表面,层与层之间的平面为基面,与基面垂直的表面为棱面,棱面又包括之字形面和摇椅面,棱面表面通常存在含氧的官能团。从结晶学观点看,石墨又可分为六方石墨和棱形石墨,六方石墨更为常见。晶粒较大的天然石墨具有鱼鳞状结构,故称为鳞片石墨。由于电解液中的溶剂分子对石墨特别敏感,进而诱发众多有害反应,所以在将石墨用作电极材料时应该对其进行改性处理,目前较多的是对石墨进行球化、表面处理和掺杂改性。采用诺研砂磨机的方法对其改性,通过对鳞片石墨的砂磨球形化处理,可明显改善负极材料的比容量,首次循环效率及循环性能。