18 Questions
Which method of size reduction is commonly used for coarse reduction of hard solids, giving relatively few fines?
Compression
Which machine is commonly used for size reduction and yields very fine products from soft, nonabrasive materials?
Attrition
Which type of size reduction gives a definite particle size and sometimes a definite shape, with few or no fines?
Cutting
What is the generic term for size reduction that includes crushers and grinders as types of equipment?
Comminution
What is the objective of crushing and grinding in size reduction processes?
To produce small particles from larger ones
What is the impact size reduction method commonly used for?
Medium to coarse products from any material
According to Rittinger's Law, the work required in crushing is proportional to what?
The new surface created
Kick's Law states that the work required from crushing a given mass of material is constant for what specific ratio?
Initial particle size to final particle size
What does Bond Crushing Law state regarding the work required to form particles from very large feed?
It is proportional to the square root of the surface-to-volume ratio of the product
In terms of comminution, what does 'attrition' refer to?
Wear due to rubbing and friction
Which term describes the action of reducing feed material size by forcing it between two surfaces moving in opposite directions?
Cutting for size reduction
What type of equipment operation is primarily associated with impact for size reduction?
Crushing
What is the primary purpose of size reduction in the pharmaceutical industry?
To grind medicines into powder form
How does achieving a smaller and more uniform particle size benefit products in both pharmaceutical and chemical manufacturing industries?
It improves product aesthetics and homogeneity
Which term describes the process of grinding, crushing, or pulverizing raw materials to achieve the desired particle size in the chemical manufacturing industry?
Comminution
What role does cutting play in size reduction processes in various industries?
Dividing large particles into smaller pieces
In the context of size reduction, what does 'attrition' refer to?
Gradual wearing down or rubbing away of materials
'Impact' in size reduction processes involves:
The sudden collision or striking of materials
Explore the process of reducing particle size and its various applications in industry. Learn about how particle size affects reactivity, separation of materials, handling of fibrous materials, and waste disposal.
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