Muller

Name:
Muller
Detailed information:
A device for uniform mixing of dry and wetted solids by a combined rubbing and smearing action analogous to that of a mortar and pestle. It consists of a stationary circular pan within which two heavy wheel-like members, together with scrapers (plows), revolve. The mulling wheels have flat, wide surfaces (outer rims) that ride on the material and effect the mixing action. Because the inner edges of the wheels travel less distance than the outer edges, a smearing effect is provided across the surface of the wheels. The plows continually rake the material into the path of the wheels as the unit revolves. Continuous mulling is obtained with two such machines arranged in tandem, space being provided for constant recirculation of the material between them. Mullers are used for fine dispersion and blending of a wide range of products that are dense enough to support the wheels and fluid enough to provide traction, (e.g., putty, explosives, and heavy pastes).