High Energy Ball Mill
- Retsch - Emax
- Material feed size: < 5 mm
- Final fineness: < 80 nm
- Speed at 60 Hz: 300 - 2000 min-1
The Emax is an entirely new type of ball mill for high energy milling.
The unique combination of high friction and impact results in extremely fine particles within the shortest amount of time.
The high energy input is a result of an unrivaled speed of 2000 min-1 and the optimized jar design. Thanks to the revolutionary cooling system with water, the high energy input is effectively used for the grinding process without overheating the sample. Due to the special grinding jar geometry, the sample is thoroughly mixed which results in a narrow particle size distribution.
Unlike other high energy ball mills, the Emax is capable of continuous grinding operation without interruptions for cooling down. This dramatically reduces the grinding time. The high energy input in combination with the unique cooling system provides perfect conditions for effective mechanical alloying or grinding down to the nanometer range.
A wealth of safety features such as the integrated safety closure of the grinding jar, temperature control with automatic start/stop system, and integrated imbalance controls make operation of the bench-top mill Emax very user-friendly.
alloys, bones, carbon fibres, catalysts, cellulose, cement clinker, ceramics, chemical products, clay minerals, coal, coke, concrete, fibres, glass, gypsum, iron ore, kaolin, limestone, metal oxides, minerals, ores, paper, pigments, plant materials, polymers, quartz, semi-precious stones, sewage sludge, slag, soils, tea, tobacco, waste samples, wood, ...
- faster and finer grinding than any other ball mill
- speed of 2000 min-1 allow for ultra-fast pulverization of the sample
- water cooling permits continuous operation without cool down breaks
- temperature-controlled grinding
- narrow particle size distribution thanks to special jar design which improves mixing of the sample
- patented drive concept
- easy operation via touch screen, 10 SOPs storable
- operation with 2 grinding jars
- easy installation of grinding jars
- jars with integrated safety closure
- range of jar materials allow for contamination free grinding
The novel size reduction mechanism of the Emax unites the advantages of different mill types: high-frequency impact (mixer mill), intensive friction (vibratory disc mill) and controlled circular jar movements (planetary ball mill) allow for unrivaled grinding performance. This unique combination is generated by the oval shape and the movement of the grinding jars. The grinding jar supports are mounted on two discs respectively which turn in the same direction. As a result, the jars move on a circular course without changing their orientation.
The interplay of jar geometry and movement causes strong friction between grinding balls, sample material and jar walls as well as a rapid acceleration which lets the balls impact with great force on the sample at the rounded ends of the jars. This significantly improves the mixing of the particles resulting in smaller grind sizes and a narrower particle size distribution than has been possible to achieve in ball mills so far.
|Applications||nano grinding, size reduction, homogenizing, mechanical alloying, colloidal milling, high energy comminution|
|Field of application||agriculture, biology, Chemistry, construction materials, engineering / electronics, environment / recycling, geology / metallurgy, glass / ceramics, medicine / pharmaceuticals|
|Feed material||medium-hard, hard, brittle, fibrous - dry or wet|
|Size reduction principle||impact, friction|
|Material feed size*||< 5 mm|
|Final fineness*||< 80 nm|
|Batch size / feed quantity*||max. 2 x 45 ml|
|Speed at 50 Hz (60 Hz)||300 - 2000 min-1|
|Cooling||controlled integrated water cooling / option: external chiller|
|Temperature control||yes (min and max temperature may be defined)|
|No. of grinding stations||2|
|Type of grinding jars||with integrated safety closure devices|
|Material of grinding tools||stainless steel, tungsten carbide, zirconium oxide|
|Grinding jar sizes||50 ml / 125 ml|
|Setting of grinding time||00:01:00 to 99:59:59|
|Interval operation||yes, with optional direction reversal|
|Interval time||00:01:00 to 99:59:59|
|Pause time||00:01:00 to 99:59:59|
|Interface||USB / LAN ( RJ45)|
|Drive||3-phase asynchronous motor with frequency converter|
|Drive power||2600 W|
|Electrical supply data||different voltages|
|Protection code||IP 30|
|Power consumption||~ 3100W (VA)|
|W x H x D closed||625 x 525 x 645 mm|
|Net weight||~ 120 kg|
|Patent / Utility patent||Inclined Grinding bowls (US 8,042,754 B2)|