Pin Mixers or pin agglomerators are a high-speed, high-energy mixer consisting of an axial rotor and pins which efficiently mixes and agglomerates fine particles into workable, easy-to-handle micropellets. Pin Mixers are the tools of choice when the job is the treatment of coal dust, fly ash, carbon black, pigments, and other fine particle matter.
Material fines such as fly ash, or grain dust are introduced at the inlet end by a screw feeder, while a liquid injection pump meters the desired blend of liquid and binders at the required feed rates. After thorough mixing of the binder and particles takes place inside the Pin Mixer, the actual pelletizing begins. The action of the pins against the casing along with the addition of the binder material causes the powdered material to form pellets. This same pin action also imparts a centrifugal force, driving the material against the inner shell wall. The pellets continue to grow in size until emerging from the pin agglomerator at the desired size.