RETSCH VIBRATORY DISC MILL RS 200 Fast Sample Homogenization

RETSCH VIBRATORY DISC MILL RS 200 Fast sample homogenization
Saringan Mesh

Deskripsi produk
No grinder can beat the speed of a Vibratory Disc Mill when it comes to preparing samples for spectral analyses. RETSCH’s Vibratory Disc Mill RS 200 is ideally suited for fast and reproducible pulverization of hard, brittle and fibrous sample materials to analytical fineness.

The RS 200 runs steadily and smoothly, even with heavy grinding sets and at maximum speed thanks to its powerful Stabilized-Plane-Drive. It achieves grind sizes between 20 and 100 microns within seconds and with excellent reproducibility.

Grinding sets are available in a variety of sizes and materials. A set of sensors will recognize jars of tungsten or agate and automatically sets the maximum permissible speed, ensuring optimum results while protecting the material.
FAST & REPRODUCIBLE
Very short grinding times, typically in the range of 60 to 180 seconds to achieve a fineness around 100 μm
Ergonomic design and carry handles ensure easy handling of the grinding set
Quick-action clamping system enables convenient and safe tightening of the grinding set
Automatic speed reduction for agate and tungsten carbide sets
Powerful Stabilized-Plane-Drive improves reproducibility
Variable speed from 700 to 1500 rpm
VIBRATORY DISC MILL RS 200PERFORMANCE TEST: SIZE REDUCTION AND REPRODUCIBILITY
The grinding results of a vibratory disc mill are significantly influenced by the movement patterns of the free masses inside the grinding jar. The new, powerful Stabilized-Plane-Drive of the RS 200 allows for extremely rapid formation of the movement pattern which is reflected in higher fineness and ultimately leads to significantly better reproducibility.

Figure 1 shows the standard deviation after 60 sec grinding time. It only takes a few large particles to impair the reproducibility of XRF measurements. Because of that, a small standard deviation for the d90 value is crucial.

Fig. 2: A “Quarter Minute Test” (QMT) evaluates the formation and stability of the movement patterns of Vibratory Disc Mills. Figure 2 shows that with the RS 200 a d90 value of 106 μm was obtained after a grinding time of only 15 seconds. The mills from three other manufacturers showed considerably inferior results.
Grinding parameters

Grinding jar: 100 ml
Sample: cement clinker 0.85 to 3.15 mm
Speed: Maximum (1200 rpm)
Grinding time: 60 sec (Figure 1), 15 sec (Figure 2)


POWERFUL TWIN PACK FOR XRF ANALYSIS
To ensure accurate and reproducible XRF analysis results, the sample needs to have a uniform particle size distribution and the pellet to be pressed needs to be as dense as possible. Both requirements are easily met when using our vibratory disc mills and pellet presses for sample preparation to XRF analysis.

VIBRATORY DISC MILL RS 200TECHNICAL DATA

Applications
size reduction, mixing, triturating
Field of application
construction materials, environment / recycling, geology / metallurgy, glass / ceramics
Feed material
medium-hard, hard, brittle, fibrous
Size reduction principle
pressure, friction
Material feed size*
< 15 mm
Final fineness*
< 20 µm
Batch size / feed quantity*
15- 250 ml depending on size of grinding set
Speed at 50 Hz (60 Hz)
700 - 1,500 min-1, continuously adjustable
Material of grinding tools
hardened steel, tungsten carbide, agate, zirconium oxide, steel 1.1740 (for heavy-metal free grinding)
Grinding jar sizes
50 ml / 100 ml / 250 ml
Setting of grinding time
digital, 00:01 to 99:59
Storable SOPs
10
Drive
3-phase asynchronous motor with frequency converter
Drive power
1.5 kW
Electrical supply data
different voltages
Power connection
1-phase
Protection code
IP 20
W x H x D closed
836 x 1220 x 780 mm
Net weight
~ 225 kg (without grinding set)
Standards
CE
*depending on feed material and instrument configuration/settings