Many of the natural things are used as dye from the ancient times.leaves of meĺòn with egg yolk is used for ģŕèen.bixàfruits for ŕèď saipan wood
òràñģè.blue from Indigo
Yes spray drying is possible for producing dye powder. However it would depends on the model of the spray dryer and type of liquid slurry because different raw material would react diffferently. As a rule of thumb, water boiled at 100 degC. Therefore your spray drying inlet temperature setting might start at 150oC? Based on my existing work, an inlet temperature at 150 would produce average outlet temperature 90oC. Feed flow rate ranging 10-15ml/min would be good as a try.
Yes spray drying is possible for producing dye powder. However it would depends on the model of the spray dryer and type of liquid slurry because different raw material would react diffferently. As a rule of thumb, water boiled at 100 degC. Therefore your spray drying inlet temperature setting might start at 150oC? Based on my existing work, an inlet temperature at 150 would produce average outlet temperature 90oC. Feed flow rate ranging 10-15ml/min would be good as a try.
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