RETSCH ULTRA CENTRIFUGAL MILL ZM 300

RETSCH ULTRA CENTRIFUGAL MILL ZM 300
Saringan Mesh

Deskripsi produk
Rotor mills are used for high-speed size reduction of soft to medium-hard as well as temperature-sensitive or fibrous materials.
The powerful Ultra Centrifugal Mill ZM 300 provides maximum grinding performance combined with ease of use. The variable speed from 6,000 to 23,000 rpm allows for gentle, neutral-to-analysis sample preparation in a very short time.

Thanks to an integrated temperature monitoring system, reproducibility is guaranteed even for long grinding processes or pulverization of large sample volumes.


The wide selection of rotors, ring sieves and cassettes makes the ZM 300 a true allrounder which meets the requirements of a great variety of size reduction tasks.

ULTRA CENTRIFUGAL MILL ZM 300TECHNICAL DATA
Applications
fine grinding
Field of application
agriculture, biology, chemistry / plastics, construction materials, engineering / electronics, environment / recycling, food, geology / metallurgy, medicine / pharmaceuticals
Feed material
soft, medium-hard, brittle, fibrous
Size reduction principle
impact, shearing
Material feed size*
< 10 mm
Final fineness*
< 40 µm
Batch size / feed quantity*
300 ml with standard cassette
600 ml with volume cassette
4500 ml / 2500 ml / 450 ml / 230 ml with cyclone
Speed at 50 Hz (60 Hz)
6,000 - 23,000 min-1, free selectable
Rotor peripheral speed
31 - 119 m/s
Rotor diameter
99 mm
Types of rotors
6-tooth rotor / 12-tooth rotor / 24-tooth rotor
Material of grinding tools
stainless steel, titanium, stainless steel with wear-resistant coating
Sieve sizes
trapezoid holes 0.08 / 0.12 / 0.20 / 0.25 / 0.50 / 0.75 / 1.00 / 1.50 / 2.00 mm
round holes 3.00 / 4.00 / 5.00 / 6.00 / 10.00 mm
Setting of grinding time
no
Collector capacity
900 ml with standard cassette
1200 ml with volume cassette
5000 ml / 3000 ml / 500 ml / 250 ml with cyclone
Drive
3-phase asynchronous motor with frequency converter
Power connection
1-phase
Protection code
IP 20
Power consumption
1750 VA ((200..240V), 1400 VA (110..120V)
W x H x D closed
452 x 431 x 426 mm
Net weight
~ 38 kg
Standards
CE
*depending on feed material and instrument configuration/settings
ULTRA CENTRIFUGAL MILL ZM 300FUNCTIONAL PRINCIPLE

In the Ultra Centrifugal Mill ZM 300 size reduction takes place by impact and shearing effects between the rotor and the fixed ring sieve. The feed material passes through the hopper (with splash-back protection) onto the rotor. Centrifugal acceleration throws it outward with great energy and it is pre-crushed on impact with the wedge-shaped rotor teeth moving at a high speed. It is then finely ground between the rotor and the ring sieve.

This 2-step grinding ensures particularly gentle but fast processing. The feed material only remains in the grinding chamber for a very short time, which means that the characteristic features of the sample to be determined are not altered. The ground sample is collected in the collecting cassette surrounding the grinding chamber or in the downstream cyclone or paper filter bag.