factors mesin stone crusher ton jaw

Several factors influence the production capacity (ton/hour) of a jaw crusher, which is a primary machine in stone crushing plants. Here are the key factors:

1. Feed Material Characteristics
– Hardness (Compressive Strength) – Harder rocks (e.g., granite, basalt) reduce throughput compared to softer rocks (e.g., limestone).
– Moisture Content – Wet or sticky materials can clog the crusher, reducing efficiency.
– Feed Size Distribution – Larger feed sizes require more crushing power and may decrease output.
– Abrasiveness – Highly abrasive materials wear out jaw plates faster, affecting long-term efficiency.

2. Crusher Design & Specifications
– Jaw Crusher Type
– Single-toggle vs. double-toggle (double-toggle provides better crushing but may have lower throughput).
– Gape & CSS (Closed Side Setting)
– Wider gape allows larger feed size; smaller CSS increases fines but reduces capacity.
– Crushing Chamber Design
– Deep vs. shallow chambers affect particle breakage efficiency.
– Eccentric Shaft Speed (RPM)
– Higher RPM increases production but may lead to premature wear if not optimized.

3. Operational Parameters
– Feed Rate & Consistency
– Uneven feeding leads to fluctuations in output.
– CSS Adjustment
– Tighter settings produce finer output but reduce tonnage.
– Power & Motor Efficiency
– Underpowered motors reduce crushing force and throughput.

4. Jaw Plate Wear & Maintenance
– Worn-out jaw plates reduce crushing efficiency and increase energy consumption.
– Regular maintenance ensures optimal performance.

5. Environmental & External Factors
– Ambient temperature, dust, and humidity can affect motor performance and material flow.

Example Calculation for Jaw Crusher Capacity
Theoretical production (ton/hour) can be estimated using:
\[
\text{Capacity} = \frac{(G × CSS × RPM × Width × Density)}{1000}
\]
Where:
– \( G \) = Gape size (mm)
– \( CSS \) = Closed Side Setting (mm)
– \( RPM \) = Eccentric shaft speed
– \( Width \) = Crusher discharge opening width
– \( Density \) = Bulk density of material (~1.6 t/m³ for granite)

For a typical 30″ x 42