Prilling or Melt Spraying,United States price supplier

product details

Origin:USA

Prilling, also known as spray congealing, spray chilling, or melt atomization, is the process of atomizing molten liquids or mixtures and cooling the resultant droplets to form prills or beads that are the final product. In general, any material that is solid at room temperature and stable in the molten state with a relatively low viscosity can be used in this process.

Examples of materials that have been successfully processed this way include low molecular weight polymers, phytosterols, waxes, fats, hydrogenated vegetable oils, and hydrated salts such as alum. While high melting materials such as metals, glasses and ceramics are routinely processed commercially, this requires special heaters and atomizing sources, so these materials are not typically processed on a toll basis. Materials that are easy to prill generally have melting points below 200 degrees C and melt viscosities lower than 200 cps.

Prilling offers a number of unique benefits in creating free-flowing powders from solids. First, prilling is a relatively inexpensive process for converting molten materials into a solid, easy to handle form. Second, the typical output consists of spherical particles, although the final form can vary from fibers (cotton candy is an example of the prilling of sugar, the melt viscosity of sugar is too high to form beads, but fibers are readily formed) to rods to spheres depending on the melt viscosity. Third, a wide range of final sizes are possible depending on the atomization method and the starting material. A particle size output of 10 to 3,000 microns is readily obtainable. Fourth, throughputs of 2,000 lbs/hour and higher with the above size distribution are easy to obtain. Finally, the process can be used with blended materials very easily.