Vacuum Dryer Powdering While Drying
Rotary vacuum dryer/pulverizer fitted with electric lump–breakers–Italvacuum’s Criox system is a multi–product rotary vacuum dryer/pulverizer that completely removes solvents from wet products leaving a filter or centrifuge. It is a versatile technology that is equally suitable for intermediates, fine chemicals, active pharmaceutical ingredients, sterile materials and injectable products. It safely handles materials that are temperature–sensitive, delicate, with varying degrees of fineness, unstable, photosensitive, or chemically reactive.
Italvacuum, with its 75 years of experience and deep know–how in vacuum process applications, is one of the world’s leading manufacturers of vacuum pumps and vacuum dryers for the chemical, pharmaceutical and cosmetic industries. The company’s Criox system is a multi–purpose dryer that can also be used as an effective fast blender or homogenizer, and also as a granulator, reducing the need for subsequent milling of the product. The system is versatile and cost–effective, since on product changeover it minimizes the times required to re–establish the line, wash, clean and inspect the plant. On many plants this allows production to be shifted rapidly from one campaign to another. Furthermore, the Criox System is safe for workers, the environment and the product. It has been designed and built in compliance with increasingly stringent safety regulations as well as cGMP and Atex standards.
The biconical rotating drying chamber ensures extremely homogeneous mixing and uniform drying. The rotation speed is adjustable, allowing agitation to be controlled from very gentle to moderate. This means that even weakly bound products can be dried without physical or chemical damage.
A Unique Way to Crush Lumps
As well as drying and mixing, the system breaks up any lumps of product. The result is a dry powders with a controlled final particle size distribution, ready to be screened and packed.
To achieve this the system has a unique feature: two powerful sets of lump–breaking blades driven by electric motors. As well as removing lumps in preparation for packaging, the blades increase the surface area of the product available for evaporation and mixing. This results in short drying times, yet with extremely low final moisture levels that other dryers cannot achieve. It also allows heat–sensitive products to be handled at low temperatures without compromising drying performance.
The electric lump–breakers feature easy control of blade speed, with high torque even at low speeds, and programmable operating cycles.
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