Ceramics, Fine Ceramics and Hard Metal
The Niro spray dryer design and operating conditions meet each ceramic product specification.
TECHNICAL SOLUTIONS
Niro offers a broad range of technical solutions and tailor-made applications to meet the specified product property requirements within the ceramics industry.
For both traditional and advanced high-tech ceramics Niro has supplied a number of plants with spray dryers with an open and closed concept.
The spray dryer design and operating conditions are selected to meet each ceramic product specification of moisture content, bulk density, particle size distribution, etc. to obtain a reproducible free-flowing granulate for production of ceramic press-body of high uniform quality in one single operation.
THE CERAMICS PROCESS
The transformation of a water-based ceramic slip specified with high solids content, binder and lubricant into a controlled droplet distribution using rotary wheel or nozzle atomization is mainly performed in open concepts with ambient air as the once-through process gas.
Closed cycle dryers with inert gas as process gas are used to prevent oxidation degradation or to operate safely with organic solvent-based ceramics (tungsten carbides).The flammable solvent evaporated from the feed formulation is fully recovered as liquid in a wet scrubber-condenser system.
PRODUCT GROUP EXAMPLES:
- Aluminium Oxides
- Electroporcelain
- Ferrites
- Silicium Oxides
- Titanates
- Carbides