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BALL MILL

Ball Mills are one of the most precise, reliable and cost effective methods of fine grinding solids in either a wet or dry state. Ball Mills are referred to by many names including Pebble Mills, Tube Mills and Attrition Mills, but no matter what the nomenclature they all operate on the same efficient principle. A horizontal cylinder is rotated at a predetermined speed that sets the balls into a tumbling and cascading motion which impact the solids in a very predictable and controllable fashion. Because the process takes several hours, the particles will not only be finely milled, but will exhibit a narrow particle size distribution. Tumble Milling is efficient and puts more energy into milling and less into wasted friction which both reduces contamination and eliminates temperatures spikes. For very heat-sensitive products, a cooling jackets can be provided for temperature control. Scale-up of Tumble Mills benefits greatly from the fact that they become more efficient with increasing size. Tumble Mills are designed for each application, taking into consideration all of the solids characteristics and whether the solids will be discharged wet or dry.

FEATURES:

HIGH EFFICIENCY – Due to the relatively slow rotational speed but large mass of media, more of the energy goes into milling and less wasted as heat.

NARROW PARTICLE DISTRIBUTION – Solids milled in tumble mills are normally so fine and consistent in size that it’s rare to require classification.

REPEATABLE RESULTS – Mill operating parameters including rotational speed, media size and milling duration can be independently controlled with known effect on the final results.

LOW TEMPERATURE – Because of the high efficiency of milling and low heat generation, the solids will not be exposed to high temperatures. For extremely heat sensitive products, cooling jackets can be provided on the mill cylinder.

CHEMICAL CONTAINMENT – Solids are sealed and contained inside the mill, protecting the environment and operators.

PREDICTABLE SCALE UP – Scale up from small to large mills is very predictable. Ball milling is one of the few unit operations that actual improve in performance and efficiency with increasing size. The ABBE Slice Mill is the same as the product mill and can replicate all mill operating parameters but with very little product.