Size Reduction and Material Handling

A material consisting of 20 mm particles is crushed to an average size of 5 mm and requires 18 kJ kg⁻¹ energy for this size reduction. If other conditions are similar, the energy required (kJ kg⁻¹) to crush the material from 25 mm to 3 mm needs to be calculated. The energy requirement calculated using Kick's law will be

Options:

• (A) 72.39
• (B) 52.76
• (C) 27.55
• (D) 14.85