Double cone blender - Pharmaceutical Engineering B. Pharm Third Semester PDF Notes

Double cone blender

• It consists of double cone on rotating shaft

• It is usually used for small amount of powders

• It is efficient for mixing powders of different densities

• Material is loaded and emptying is done through the same port

• The rate of rotation should be optimum depending upon the size, shape of the tumbler and nature of the material to be mixed

• The rate of rotation commonly ranges from 30-100 rpm

• Mixing occurs due to tumbling motion

Advantages of V cone blender and double cone blenders

• If fragile granules are to be blended, twin shell blender is suitable because of minimum attrition

• They handle large capacities

• Easy to clean, load, and unload

• This equipment requires minimum maintenance

Disadvantages of V cone blender and double cone blenders

• Twin shell blender needs high headspace for installation

• It is not suitable for fine particulate system or ingredients of large differences in the particle size distribution, because not enough shear is applied

• If powders are free flowing, serial dilution is required for the addition of low dose active ingredient.