Abstract
The most common method of controlling the variable parameters in the process of spray drying ceramic powders is based on heuristic rules which are known to very few people and are difficult to extrapolate to other spray-drying plants. In our research, the orthogonal experimental design was applied to determine the variable parameters that exert the greatest effect on the quality of the powder, which is expressed as being the smallest deviation away from the nominal maximum grain size.A preliminary analysis allowed us to select an initial set of independent parameters that consisted of the intake temperature, the outlet temperature, slip flow rate and the depression inside the spray dryer. Application of the Taguchi Approach made it possible to determine the relative importance of each of these parameters as well as the optimal operating conditions.The optimal operating conditions were confirmed by implementing them in an industrial plant.
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