Podcast
Questions and Answers
What are the four commonly used size-reduction machines?
What are the four commonly used size-reduction machines?
Compression, Impact, Attrition, Cutting
What method of size reduction is typically used for coarse reduction of hard solids, giving relatively few fines?
What method of size reduction is typically used for coarse reduction of hard solids, giving relatively few fines?
Compression
Which method of size reduction yields very fine products from soft, nonabrasive materials?
Which method of size reduction yields very fine products from soft, nonabrasive materials?
Attrition
In size reduction, which method gives a definite particle size and sometimes a definite shape, with few or no fines?
In size reduction, which method gives a definite particle size and sometimes a definite shape, with few or no fines?
What is the generic term for size reduction, encompassing crushers and grinders?
What is the generic term for size reduction, encompassing crushers and grinders?
What is the objective of crushing and grinding in size reduction processes?
What is the objective of crushing and grinding in size reduction processes?
What are some of the techniques used for micronization of liquid particles?
What are some of the techniques used for micronization of liquid particles?
Name some of the methods used for micronization of solid particles.
Name some of the methods used for micronization of solid particles.
What are some products processed by micron technologies for improved taste and flavor?
What are some products processed by micron technologies for improved taste and flavor?
In which industries are micron technologies commonly employed?
In which industries are micron technologies commonly employed?
How does Microfluidization work in particle size reduction?
How does Microfluidization work in particle size reduction?
What is one benefit of using homogenizers in particle size reduction?
What is one benefit of using homogenizers in particle size reduction?
Why is size reduction important in the pharmaceutical industry?
Why is size reduction important in the pharmaceutical industry?
How does the chemical manufacturing industry use size reduction?
How does the chemical manufacturing industry use size reduction?
What is the relationship between particle size and product quality in both pharmaceutical and chemical manufacturing industries?
What is the relationship between particle size and product quality in both pharmaceutical and chemical manufacturing industries?
Why is the history of size reduction considered to extend across centuries?
Why is the history of size reduction considered to extend across centuries?
How has the concept of size reduction expanded beyond the pharmaceutical industry?
How has the concept of size reduction expanded beyond the pharmaceutical industry?
What role does size reduction play in transforming raw materials in the chemical manufacturing industry?
What role does size reduction play in transforming raw materials in the chemical manufacturing industry?
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Study Notes
Size Reduction in Industries
- The pharmaceutical industry uses size-reduction equipment to grind medicines into powder form, and the concept has applications in fields like nanotechnology.
- Chemical manufacturing uses size reduction to manipulate raw materials, making them safer and more efficiently produced.
- Smaller and more uniform particle size leads to smoother and more homogeneous products, beneficial for aesthetic and practical purposes.
Brief History of Size Reduction
- Size reduction has been used for centuries to decrease material dimensions to meet diverse industry demands.
- Particle size reduction increases reactivity, permits separation of unwanted ingredients, and reduces bulk for easier handling and waste disposal.
Methods of Size Reduction
- There are four common methods: compression, impact, attrition, and cutting.
- Compression is used for coarse reduction of hard solids, producing few fines.
- Impact gives coarse, medium, or fine products.
- Attrition yields very fine products from soft, non-abrasive materials.
- Cutting gives a definite particle size and sometimes a definite shape, with few or no fines.
Comminution and Crushing
- Comminution is a generic term for size reduction, and crushers and grinders are types of comminuting equipment.
- The objective of crushing and grinding is to produce small particles from larger ones.
- Smaller particles are desired for their large surface area or specific shape, size, and number.
Recent Developments in Size Reduction
- Micron technologies involve size reduction of liquid and solid particles using techniques like microfluidization, high-pressure homogenization, and ultrasonic homogenization.
- Micronization is commonly employed in pharmaceutical and food industries for improved taste, flavor, and release of encapsulated components.
- Homogenizers, like microfluidizers, reduce particle size through particle collision and cavitation, producing products with longer shelf life.
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