Hard material, with a feed size leaser of than 100mm, can now be reduced in size to a fineness of 0.1mm in a single operation.
In the past, when laboratories prepared large pieces of brittle samples for analysis, they used a jaw crusher such as Fritsch Pulverisette 1 for the pre-crushing stage, since the original feed size was too large to be handled by the final grinding mill. Previously, samples could not be prepared for analysis in a single operation because a jaw crusher could not achieve adequate product fineness and grinding mills can only handle a limited range of feed size.
Fritsch now offer the Pulverisette 13 - Disk Mill, which quickly reduces material to a fineness of 0.1mm (minimum) even when processing relatively large samples (up to 20mm edge length). In cases where the required fineness fits these criteria but the original samples include pieces with an edge length over 20mm, Fritsch GmbH offer a suitable solution. The Pulverisette 13 - Disk Mill is available from John Morris Scientific .
Combination of the Pulverisette 1 and Pulverisette 13 used together: The Pulverisette 1 - Jaw Crusher is mounted on a metal frame over the Pulverisette 13 – Disk Mill and the two units are connected by a specially designed hopper. This combination enables sample reduction from the jaw crusher's maximum feed size (approximately 100mm) to the disk mill's finest average grain size of approximately 0.1mm in one single operation.