Planetary mixtures are one of the most widely used mixtures in the pharmaceutical industry. In pharmaceutical industries planetary mixture often used for basic operations of mixing, blending, and low share granulation.

1. PLANETARY MIXTURE
Pharmaceutical Engineering (PT-317)
Presented By: Sridebesh Ghorui

2. CONTENTS
• Introduction
• Working and Function of Planetary Mixture
• Application and Uses
• Advantages and Disadvantages
• Conclusion
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3. Planetary mixtures are one of the most widely used
mixtures in the pharmaceutical industry. In
pharmaceutical industries planetary mixture often
used for basic operations of mixing, blending, and
low share granulation.
INTRODUCTION 3

4. WORKING AND FUNCTION OF PLANETARY MIXTURE
• Mixing mechanism is shear.
• Shear is applied between moving blade and stationary wall.
• Mixing arm moves around its own axis and around the
central axis so that it reaches every spot of the vessel.
• The plates in the blades are sloped so that powder makes an
upward movement to achieve tumbling action also.
• Consists of vertical cylinder shell which can be removed.
• The blade is mounted from the top of the bowl.
• Mixing shaft is driven by planetary gear and it is normally
built with variable speed drive.
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5. APPLICATION AND USES
Application:
• Tablet coating
• Tablet granulation
• Antacid blends
• Collagen solution
Uses :
• Break down agglomerates rapidly.
• Low speeds are used for dry
blending and fast for wet
granulation.
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6. ADVANTAGES AND DISADVANTAGES
Advantages:
• Speed of rotation can be change as per
required.
• More useful for wet granulation
process.
• Planetary Mixer Manufacturers install
motors that have higher energy
efficiency and speed variation to cut the
power consumption.
• Easy to cleaning and discharge.
Disadvantages:
• Mechanical heat is buildup within the
powder mix.
• Planetary mixers require high power.
• It has limited size and is useful for
batch work only.
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7. CONCLUSION
• Better hygiene and better food safety are guaranteed with the
planetary mixer.
• Product quality is good due to better homogenise mixing.
• Versatile operations can be done because multiple blades are
available for mixing.
• Lower physical effort and labour required due to automatic operated
equipment.
• The energy consumption is also less which means planetary mixture
is also economically beneficial.
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8. REFFERENCES
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• Dr. Bhawna Bhatt, Prof. S.S. Agrawal, “PHARMACEUTICAL
ENGINEERING – Mixing”, Delhi Institute of Pharmaceutical Science and
Research Sector – 3, Pushp Vihar, New Delhi (24-08-2007) Page 24- 23.
• “Mixing Technologies in the Pharmaceutical and Medical Industries” by
Charles Ross & Son Company page- 14-18.
• Introduction to Chemical Engineering by Walter L. Badger.
• Tutorial Pharmacy by Cooper and Gunn, Sixth Edition.