Granulation / calcination / coating
- processes: granulation, calcination, coating,
- materials: fertilizers, minerals, chemical substances, food products (fruits, vegetables), granulated or dusty solid products, industrial solid wastes, limestone, ores, oxides, dolomites, talc, rubber, fibers.
- drum granulators: chemical, food, fertilizer industry,
- length/diameter ratio up to 2.8-10 revolutions per min., time of stay (2-3 min.) dependant on inclination,
- internally rubberized to protect against abrasion, high temperature up to 180 C, acids, agglutination,
- drum equipped with suspension injectors, gas inlet/outlet,
- application: coating of granulated fertilizers (liquids: oil, amines, solids: talc, diatomaceous earth),
- purpose: improving granulate surface and protection against agglutination,
- drum’s initial zone is equipped with spirals (cutters) which facilitate insertion of a product,
- subsequent zone contains low mounted cutters to ensure easy pouring and even impregnation of a coated product,
- fluid coating: 1 to 4 coating nozzles, coating with loose material: dosage with a feeding screw (removable),
- operation in counter-current (maximum gas temperature in the final part of the drum – 900 to 1100 C), this ensures material’s moisture content at dumping at 0%,
- execution: steel lined with fireproof material, with burner in a drum (fly ash),
- drum equipped with spirals and hooks of boiler steel, with axial combustion chamber mounted in a drum (washed phosphates),
- combustion chamber placed on wheels or rails in order to separate it from the drum, also to facilitate access,
- dumping box limits entrainment of fine particles,
- external drive resistant to temperature by default.
- elimination of larger contaminant particles (typically including nails, screws, nuts, etc.) from powders and bulk solids,
- protection of machines and equipment from damage,
- elimination of potential sources of ignition (fire and explosion protection),
- conveyor belts, transfer chutes, pneumatic conveying lines.
Industrial centralised vacuum cleaning systems are used for removing dust buildup from floors, flat surfaces, plant, machinery and structural elements of facilities. This solution is also used as local dust extraction stations at workplaces with high and directional dust emissions. Extraction hoods and extensions are provided for this type of setup.
Standard central vacuum cleaning systems are designed for free-flowing, dry, non-agglomerating and non-explosive dusts.
Explosion protected central vacuum systems are used with potentially explosive dusts and include certified explosion certified equipment for application in relevant explosion zones (as required by the customer) and the necessary explosion protection system (explosion suppression, venting and isolation). Our services may also include preparation of an Explosion Assessment Document, or an Explosion Protection Document.