A system for fabricating microparticles useful for example in managing invasive species is provided. The system provides a nozzle for atomizing liquefied droplet material which is then suspended in a cyclonic separator receiving refrigerated gas until the droplets can solidify. In this way small droplets (less than 100 m) can be readily fabricated in bulk without clumping and aggregating.

A system for fabricating microparticles useful for example in managing invasive species is provided. The system provides a nozzle for atomizing liquefied droplet material which is then suspended in a cyclonic separator receiving refrigerated gas until the droplets can solidify. In this way small droplets (less than 100 m) can be readily fabricated in bulk without clumping and aggregating.

Provided are roofing granules, such as solar-reflective roofing granules, methods for making them and their use in roofing products. In one aspect, the disclosure provides a collection of solar-reflective roofing granules having a solar reflectivity of at least 70%, wherein substantially each roofing granule comprises an inner layer, an outer layer disposed on an outer surface of the inner layer and substantially surrounding the inner layer, wherein the inner layer and the outer layer are formed from substantially the same composition but have substantially different porosities, the outer layer having a porosity substantially lower than the porosity of the outer layer. Methods for making such roofing granules can include forming layers of substantially the same first and second compositions, wherein the forming of the layer of the second composition is performed under substantially different conditions from the forming of the layer of the first composition.

Disclosed are a particulate processed product of tea and a method for preparing the same. The particulate processed product of tea has a sphericity S.sub.10 value of a particle corresponding to 10% cumulative subdistribution in cumulative distribution measured for the sphericity of tea particles of 0.68 or greater. The processed product of tea is convenient to drink because it is readily wetted and dispersed in water. In addition, it can be easily packaged and used due to a low angle of repose and thus excellent flowability.

Disclosed are a particulate processed product of tea and a method for preparing the same. The particulate processed product of tea has a sphericity S.sub.10 value of a particle corresponding to 10% cumulative subdistribution in cumulative distribution measured for the sphericity of tea particles of 0.68 or greater. The processed product of tea is convenient to drink because it is readily wetted and dispersed in water. In addition, it can be easily packaged and used due to a low angle of repose and thus excellent flowability.

The embodiments are and include at least an apparatus, system and method for forming print material particles for additive manufacturing (AM) printing. The apparatus, system and method include at least a melt chamber comprising a polymer melt; a vertical extruder that fluidically receives the polymer melt; an atomizer that atomizes the polymer melt from the vertical extruder and that distributes the atomized polymer melt; a fall chamber comprising a plurality of zones into which the atomized polymer melt is distributed; and a collector to receive the print material particles formed of the atomized polymer melt after falling through the plurality of zones.

The embodiments are and include at least an apparatus, system and method for forming print material particles for additive manufacturing (AM) printing. The apparatus, system and method include at least a melt chamber comprising a polymer melt; a vertical extruder that fluidically receives the polymer melt; an atomizer that atomizes the polymer melt from the vertical extruder and that distributes the atomized polymer melt; a fall chamber comprising a plurality of zones into which the atomized polymer melt is distributed; and a collector to receive the print material particles formed of the atomized polymer melt after falling through the plurality of zones.

A fluidized bed granulator for granulation with urea or urea-containing liquids is described, wherein the granulation liquid is supplied via a supply manifold comprising a header and risers. The risers are at least in part provided inside channels for secondary gas.

A fluidized bed granulator for granulation with urea or urea-containing liquids is described, wherein the granulation liquid is supplied via a supply manifold comprising a header and risers. The risers are at least in part provided inside channels for secondary gas.

A fluidized bed cooler for cooling a urea-containing granular material may include a cooler chamber having a product inlet opening, a product outlet opening, a perforated plate disposed in the cooler chamber, and at least one cooling medium entry opening disposed beneath the perforated plate. The product inlet opening may be disposed above the perforated plate, and a baffle plate may be disposed between the product inlet opening and the perforated plate. A distributor plate may be disposed between the baffle plate and the perforated plate. An area of the distributor plate may be 10% to 50% greater than an area of the baffle plate.