Grinding and micronisation
Traditional grinding processes at environmental temperature cannot provide, for several chemical and pharmaceutical products, acceptable results because of the size of the particles, product quality and safety, mainly because of the heating the product undergoes during grinding and the presence of humidity and oxygen that degrade the product. In these conditions the increase in temperature can bring about profound changes in the product to be treated: the formation of undesired sub-products, a wide range of particle sizes and the creation of potentially unsafe conditions.
An effective and often advantageous solution is to call the product intensely, as it enters the microniser and while it is inside, by injecting cryogenic liquid nitrogen or in some cases carbon snow. This technology makes the product to be treated highly fragile, making it easier to grind and with lower energy costs, particles with a narrow and homogeneous size distribution and inert and protective atmosphere during grinding.
SOL offers integrated solution for grinding and micronisation processes, making it possible to produce plants suitable for the use of cryogenic gases thanks to collaboration with highly qualified operators and the experience it has built up. The liquid nitrogen is made available in suitable plant with controlled pressure and capacity, and all process parameters are continuously monitored.