Mills and Crushers

The Ring Mill is a traditional method for rapidly reducing small batches of coarse ore and similar particulates down to the degree of fineness required for laboratory analytical procedures. It comprises a bowl, with ring and puck type grinding elements inside, which is fitted to the vibrating platform or head of the mill.

The bowl moves with the same eccentric motion as the mill head and pulverising is achieved by the highly energetic interaction of the material and the grinding elements which are free to move rapidly within the bowl. The typical maximum batch that could be prepared in such mills was approximately 400 grams.

 

Please click on the relevant Mill models to download their respective brochures:

Rotary Sample Dividers	Ring Mill Bowls
LM2 Mills	Jaw Crusher Mills - JC2500
Riffle Splitters	Drying Ovens
Ball & Rod Mills	Containersised Laboratories

 

In 1984, Labtechnics achieved a significant breakthrough with the invention of a bowl capable of preparing batches up to 1500 grams. This design was granted an international patent. The superior grinding ability of the bowl's single 'flying saucer' puck has led to its adoption as a standard methodology for the preparation of many types of mineral samples.

In our Continuous Ring Mill, Labtechnics combine the benefits of both the 'flying saucer' and the traditional ring and puck type bowls in a 2 stage grinding process.

Two bowls are usually fixed to the mill; one immediately over the other. The in feed material is primary milled in the upper bowl and then gravitates under the influence of vibration through holes in its base to the lower bowl for final milling.

The final product exits through a series of holes in the lower bowl, the aperture of which influences the final particle sizing. The whole process operates on a 'flow through' continuous basis.

The rate of flow (or production) is controlled by an in feed vibratory feeder or similar which can be provided as an integral part of the mill or can be supplied separately by the user. In feed size can be up to approximately 12 mm and feed rates of up to 250 to 500g/minute are achievable when producing an essentially minus 150 micron product.