Powder Coolers

Powder Cooler is engineered to efficiently cool a wide variety of free flowing bulk solids such as sugar, fertilizer, chemicals, plastics, dried biosolids, minerals, and many other types of granular, crystals and powders.

Powder Coolers consists of a vertical cylinder made of steel and cooled by a water film. A rotor inside the cylinder transports the hot material from the inlet at the bottom to the outlet at the top of the cooler. A steady stream of cooling media (water) flows down the outside to remove heat from the steel cylinder and thereby cooling the material while being transported inside. Moving up the cooler on the adjustable spirals of the rotor, the material is constantly being turned and pressed against the cooled outer wall. And depending on the initial temperature of the feed material and the cooling water, a reduction from 40 °C up to 70 °C can be achieved. The complete drive unit is located in the cooler base where the components are easily accessible for maintenance work. In the lower area of the cylinder, the cooling agent flows into a collection gutter. The water can then be discharged completely, returned to the water reservoir or piped to a nearby water processing plant for re-cooling and re-use.

Fresh water taken from streams,lakes and rainwater reservoirs is the usual source for the cooling agent. But when fresh water is not available in sufficient quantity or the efficient reuse of this natural resource is preferred, a water treatment and re-cooling plant should be installed. There are a variety of factors that affect the design and construction of a closed-circuit recooling plant.However, most important would be the quality of the water and local atmospheric conditions.