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,鋰離子電池中首次嵌入碳材料,碳材料因制備方法、前驅體和熱處理等不同而具備不同的結晶度、化學組成和微觀結構,早期鋰離子電池負極采用的碳材為石油焦、瀝青等一類軟碳材料,石墨化碳,無定型碳。
軟質碳材料結晶度較低、晶粒尺寸小、晶面間距較大,雖然碳層之間存在有序堆疊但長程無序,與石墨相比具備比較優異的大電流放電性能,石墨是層狀晶體,由無數石墨片層在范德華力作用下堆疊形成。石墨含有兩個不同表面,層與層之間的平面為基面,與基面垂直的表面為棱面,棱面又包括之字形面和搖椅面,棱面表面通常存在含氧的官能團。從結晶學觀點看,石墨又可分為六方石墨和棱形石墨,六方石墨更為常見。晶粒較大的天然石墨具有魚鱗狀結構,故稱為鱗片石墨。由于電解液中的溶劑分子對石墨特別敏感,進而誘發眾多有害反應,所以在將石墨用作電極材料時應該對其進行改性處理,目前較多的是對石墨進行球化、表面處理和摻雜改性。采用諾研砂磨機的方法對其改性,通過對鱗片石墨的砂磨球形化處理,可明顯改善負極材料的比容量,首次循環效率及循環性能。