Spray Dry Method
Chemical Synthesis Of Ceramic Powder : Spray Drying Method
Introduction:
• Spray drying has become the most important technique for dehydrating fluid foods such as milk, coffee and egg powders, and is used extensively in the pharmaceutical and chemical industries.
• Atomization is of particular interest in the metals industry for generating fine powders.
• But today we are going to learn spray drying method in ceramic industry
• Typically performed using aqueous systems, spray drying can also be undertaken with solvent-based systems under controlled conditions.
Spray drying consists of the following unit operations:
• Pre-concentration of liquid (for more economic operation, since evaporation is expensive)
• Atomization (creation of droplets)
• Drying in stream of hot, dry gas (usually air)
• Separation of powder from moist gas
• Cooling
• Packaging of product
Atomization
• Important part to know in spray dying method is the atomization......
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Approximate Word Count: 614
Approximate Pages: 3 (250 words per double-spaced page)
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