GEOLOGY

EARTH SCIENCE

MINERAL PHYSICS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following processes involved crushing and grinding of mineral ore?
A
Analysis
B
Comminution
C
Dewatering
D
Sampling
Explanation: 

Detailed explanation-1: -The process of comminution is the crushing and grinding of a material / ore to reduce it to smaller or finer particles. The comminution process reduces particle sizes by breaking, crushing, or grinding of ore, rock, coal, or other materials.

Detailed explanation-2: -Comminution is the umbrella term for the crushing and grinding processes that create heterogeneity from a homogenous ore, as well as the devices used for comminution: gyratory crushers, jaw crushers, cone crushers, grinding mills, SAG mills, ball mills, high pressure grinding rolls (HPGR).

Detailed explanation-3: -The terms crushing and grinding is used for same meaning i.e. for size reduction. The term crushing represents the reduction in size of a lumpy solid mass which give coarse product whereas the term grinding represents the reduction in size of the crushed materials which gives fine products than crushing.

Detailed explanation-4: -Comminution is the reduction of solid material particle size by fracture via grinding, milling, or similar processes. Comminution techniques are usually employed to produce particulate nanomaterials (e.g., powder) from larger-sized or bulk materials.

Detailed explanation-5: -Grinding is a powdering or pulverizing process using the rock mechanical forces of impaction and attrition. The two main objectives for a grinding process are: To liberate individual minerals trapped in rock crystals (ores) and thereby open up for a subsequent enrichment in the form of separation.

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