Step 1: Understanding the Question:
The question asks us to identify the equipment used for coarse crushing, which is the initial and primary stage of size reduction for large materials.
Step 2: Detailed Explanation:
Let's analyze the function of each option:
Ball Mill: This is a type of grinder used to produce fine or super-fine powders. It is used in the final stages of size reduction, not the initial coarse stage.
Jaw Crusher: This is a primary crusher that reduces the size of large rocks or ore by compressing the material between a fixed jaw and a moving jaw. It is specifically designed for coarse crushing.
Hammer Mill: This is typically used for intermediate or secondary crushing. It reduces the size of materials by repeated impacts from small hammers.
Fluid Energy Mill: This is used for ultra-fine grinding, often producing particles in the micron or sub-micron range. It uses high-speed jets of fluid (like air or steam) to cause particles to collide with each other.
Step 3: Final Answer:
Based on the analysis, the Jaw Crusher is the equipment specifically designed for coarse crushing. Therefore, option (B) is the correct answer.