A process for producing prills, in particular fertilizer prills, coated with at least one biologically degradable polymer layer, in particular a PLA layer, may involve applying a degradable polymer layer to a carrier material of the respective prill in a drum coating step, in particular in a drum coater at relative negative pressure, and then coating the prills with a second degradable polymer layer on top of the first degradable polymer layer in a fluidized bed coating step, in particular in a fluidized bed coater at a relative positive pressure. Coating the prills with the second degradable polymer layer may involve introducing the prills into a fluidized bed coater after the drum coating step, and the fluidized bed coating step may be performed spatially adjacent alongside the drum coating step.

A process for producing prills, in particular fertilizer prills, coated with at least one biologically degradable polymer layer, in particular a PLA layer, may involve applying a degradable polymer layer to a carrier material of the respective prill in a drum coating step, in particular in a drum coater at relative negative pressure, and then coating the prills with a second degradable polymer layer on top of the first degradable polymer layer in a fluidized bed coating step, in particular in a fluidized bed coater at a relative positive pressure. Coating the prills with the second degradable polymer layer may involve introducing the prills into a fluidized bed coater after the drum coating step, and the fluidized bed coating step may be performed spatially adjacent alongside the drum coating step.

Spherical ceramic-glass nanocomposite dielectrics made from ceramics and glasses that are separately pre-milled by mechanical ball milling using selected ball-to-powder weight ratios and combined to form a mixture that is ball milled. A stable liquid suspension of the milled mixture including an added dispersant such as polyacrylic acid to improve uniformity is spray dried through a nozzle and recovered product is annealed. The novel dielectrics have a microstructure where ceramic primary particles are uniformly distributed and fully embedded in a glass matrix. The dielectrics have a mean particle size of about 1-20 um and a sphericity of about 0.8 or higher which are suitable for fabricating multilayer ceramic capacitors for high temperature applications. The novel dielectrics afford decreased sintering temperature, enhanced breakdown strength, lower dielectric lose tangent, and lower costs. Calcium titanate zirconate with manganese-doping-based or barium titanate-based dielectric ceramics and alkali-free borosilicate glass produce superior nanocomposite dielectrics.

Spherical ceramic-glass nanocomposite dielectrics made from ceramics and glasses that are separately pre-milled by mechanical ball milling using selected ball-to-powder weight ratios and combined to form a mixture that is ball milled. A stable liquid suspension of the milled mixture including an added dispersant such as polyacrylic acid to improve uniformity is spray dried through a nozzle and recovered product is annealed. The novel dielectrics have a microstructure where ceramic primary particles are uniformly distributed and fully embedded in a glass matrix. The dielectrics have a mean particle size of about 1-20 um and a sphericity of about 0.8 or higher which are suitable for fabricating multilayer ceramic capacitors for high temperature applications. The novel dielectrics afford decreased sintering temperature, enhanced breakdown strength, lower dielectric lose tangent, and lower costs. Calcium titanate zirconate with manganese-doping-based or barium titanate-based dielectric ceramics and alkali-free borosilicate glass produce superior nanocomposite dielectrics.

A particulate, urea-containing composition and use of an additive for producing a particulate, urea-containing composition and methods of producing a particulate, urea-containing composition.

A particulate, urea-containing composition and use of an additive for producing a particulate, urea-containing composition and methods of producing a particulate, urea-containing composition.

The electrospray device comprises a sprayer comprising a sprayer body and nozzle, and a partition positioned vertically and coaxially with the sprayer. The sprayer body is provided with a swirl generator for generating a swirling air stream, and a power supply connected between the nozzle and the partition, to apply voltage to the nozzle and the partition. The electrospray device may be part of a fluidized bed apparatus comprising a product container, a lower plenum base, an air distribution plate resided therebetween. When the power supply applies voltage in opposite polarities to the nozzle and the partition, the fluidized bed apparatus is used for coating particles; and when the power supply applies voltage of the same, the fluidized bed apparatus is used for spray-drying a solution. The electrospray device uses an electromagnetic hydrodynamic method to improve the performance of the fluidized bed apparatus and optimize the process of product.

An apparatus for producing particles or material-coated particles by decomposition of precursor gas in a stirred or mixed particle bed comprises a reactor vessel, an actuator assembly comprising a shaft disposed at least partially within the reactor vessel, and an actuator element coupled to the shaft and rotatable therewith. The apparatus further comprises a precursor gas supply in fluid communication with the actuator assembly. The actuator assembly is configured to circulate seed particles of a seed particle bed in the reactor vessel with the actuator element, and to introduce precursor gas from the gas supply to the seed particle bed, when seed particles are received in the reactor vessel.

Method for producing solid urea by granulation, wherein the granulation is fed with liquid urea having a purity greater than 98% by weight and not containing formaldehyde.

Method for producing solid urea by granulation, wherein the granulation is fed with liquid urea having a purity greater than 98% by weight and not containing formaldehyde.