Ring Mills for the fine grinding of hard to brittle and fibrous material

The LAARMANN ring mills are essential for all applications which demand the grinding of hard, brittle and fibrous material down to analytical end fineness      

Method of operation

With a LAARMANN Ring Mill you put the sample together with a disc or a set of rings and roller in a bowl to bring it all together into 3-dimensional vibrations. Inside the bowls the sample will be ground and homogenized by high pressure, impact and friction rapidly down to analytical end fineness. Typically samples are ground to 90-95% <75μm in app. 3 minutes. Exact time and end fineness depends on the sample characteristics

LAARMANN Ring Mills are appropriate for bowls up to a volume of 5000cc

According to the desired maximum volume of the bowls you can select between LAARMANN Ring Mills

LM 250: Bowl 20cc to 300cc

LM 1000: Bowl 20cc to 1000cc

LM 2000: Bowl 50cc to 2000cc

LM 5000: Bowl 5000cc

The optional Liftboy makes the handling of the larger grinding sets more easy. By a digital display all parameters can be programmed and controlled very easily (time, interval, right-left rotation...) The cabinet has a drawer to collect dust and any excessive material. Additionally the cabinet can be separated from the vibrating unit very easily for service