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Mixing Process (Parameters in ceramic granules (Feed concentration,…
Mixing Process
Parameters in ceramic granules
Feed concentration
Atomizer size(feed pressure)
Atomizer size(disc rotation velocity)
Rate of hot air
Rate of feed
Hot air temperature
Important of spray Dryer
Desired particle product
narrow particle distribution
soluble in water
Cost effective
recycling heat of exhaust gas
high yield that made up of difference raw materials
Simple process
Single and continuous
final drying step not required
S.G Equation
Important
used for wet mixing process
to determine how much mixture powder in slurry
can determine production of casting slip
Example
A = 1000g of slip weight in 300ml
B = 400g of slip weight in 300ml
S.G = (1000-400)/300 = 2gm/ml
Brogniart Equation
Important
Enable to estimate the amount of dry material in given volume slop
can calculate actual density of dry glaze & actual density of local water
Example
P = 1.7kg, A=1kg, S=25 (based on theory)
W=(1700-1000)X 25(2.5-1) =1166g
Type of Spray Dryer
Co-current disc atomizer
Mixed flow with nozzle atomizer