Wet grinding of Nano particles

Nanotechnology is rapidly expanding: Hosokawa has developed the manufacturing technology and machinery for production of nano particles and composite materials

Nanotechnology is a rapidly expanding new frontier and increasing industrial demand for small and smaller particle sizes for easier particle manipulation and the creation of advanced materials, has led Hosokawa to commit to the development of technology for the manufacture and commercialisation of nano particles and composite material production machinery.

One area of research has been to obtain particles with a fineness down to 10 nanometers using a wet milling process.

This has been achieved through development of the Hosokawa Alpine AHM mill.

The AHM is a universal agitated ball mill with an enclosed horizontal cylindrical, double walled milling chamber for both closed circuit and single pass wet milling of particles for sub-micron to nanometer milling applications.

The AHM has been specially developed for suspensions with good flow properties where a steep particle size distribution and high end-product fineness are required, and can process a wide variety of products including chemicals, ceramics, minerals, pigments, food, pharmaceuticals and agro-chemicals.

Product is fed to the mill inlet by means of a pump, and exits the mill through a screen at the mill outlet.

The grinding chamber is filled to a level of approximately 70-80% with the grinding media, which are retained in the chamber by the screen, which allows the milled slurry to exit.

Rotating stirrers prevent blockage of the screen.

A flexible wear protection system involving the lining of the grinding chamber with sleeve sections facilitating rapid exchange, materials of construction for the agitator discs and separating rings and stirrers selected to suit the clients application, and the option to coat the rotor and stator parts with either high-grade ceramics or tungsten carbide, ensures long service life can be achieved even for abrasive suspensions.

Suitable for both continuous and batch operation, the mills are equipped with stationary or mobile support units that guarantee simple dismantling and easy access for cleaning and maintenance.

Machine size ranges from laboratory/pilot plant to large-scale production units.

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