I. Significantly Different Equipment Principles: A shear mill acts like a high-speed mixer, using the strong shearing force between the rotor and stator to break down and disperse the modifier; a rubber mill, on the other hand, acts like a precision stone mill, using the mechanical extrusion of the grinding discs to achieve molecular-level mixing. The former processes faster (approximately 15-30 minutes per batch), while the latter mixes more evenly but takes longer (approximately 40-60 minutes).
II. Performance Comparison Reveals the Truth:
Energy Consumption: Shear mill motors typically have a power of 55-90kW, while rubber mills require 75-110kW, but the latter has lower energy consumption per unit output.
Modification Effect: Rubber mill-produced asphalt exhibits less penetration fluctuation (within ±3), while shear-produced asphalt has slightly less stable softening point.
Maintenance Costs: Shear mill wear parts have a replacement cycle of approximately 6 months, while rubber mill grinding discs have a lifespan of up to 2 years.
III. Tips for Choosing Based on Needs: For high-grade road construction, rubber mills are recommended due to their uniformity meeting stringent requirements; for emergency repair projects, shear mills are preferable due to their rapid commissioning advantage. For small-scale production (less than 50 tons per day), considering the cost-effectiveness of shearing machines, a combination solution of rubber mills is more suitable for continuous large-scale production lines.