Small jaw crusher suitable production condition introduction

1. Brief Definition

2. Suitable Production Scale

• Output range: Typically 5–80 t/h, matching small quarry, stone yard, recycling station and small mineral processing plant.
• Not suitable for large-scale continuous mines with hourly capacity above 100 tons; large models or two-set parallel configuration are required in that case.
• Ideal for batch intermittent production rather than 24-hour non-stop heavy-duty operation.

3. Applicable Raw Material Conditions

Suitable materials

• Compressive strength: ≤320 MPa.

Material limitations

1. High-viscosity, wet sticky clay or mud: easy to block crushing cavity and discharge opening; materials need drying or pre-screening.
2. Tough fibrous materials such as rubber, plastic, timber: difficult to form compressive fracture.
3. Metal debris: must be removed before feeding to protect jaw plates.
4. Oversized lumps: feeding block size must not exceed the maximum feed opening; oversize rock needs secondary blasting or pre-breaking.

4. Site & Infrastructure Conditions

Suitable site features

1. Limited space: narrow yard, urban construction waste recycling station, roadside temporary crushing station, mountain small quarry.
2. Frequent relocation demand: wheeled mobile small jaw crusher is preferred if the site shifts every few months.
3. Low foundation requirement: mobile type avoids heavy concrete foundation; stationary version still needs flat reinforced foundation to reduce vibration.

Power requirements

• Small jaw crushers mostly adopt 15–55 kW motor.
• Stable three-phase industrial power is preferred; if power grid is weak, configure matched generator set and voltage stabilization equipment.
• Avoid long-distance thin cables, which cause voltage drop, overload and frequent shutdown.

5. Matching Process Conditions

Best process configuration

1. Primary crushing only: small jaw crusher + vibrating feeder + vibrating screen, produce coarse aggregate.
2. Combined crushing line: small jaw as primary crusher, matched with cone crusher or impact crusher for secondary crushing to make finished sand and aggregate.
3. Construction waste recycling: small jaw + magnetic separator to remove steel bars from concrete blocks.

Unsuitable process matching

1. Direct fine crushing: small jaw is primary crushing equipment; it cannot replace fine jaw crusher or impact crusher to produce finished sand alone.
2. Closed circuit with too small screen aperture: easily cause circulating load surge and cavity blockage.

6. Environmental & Operation Conditions

1. Altitude: Conventional models adapt to altitude below 1,000 m; high-altitude areas need motor power derating or special motor.
2. Temperature: Normal working temperature -10 ℃ ~ +40 ℃. In cold regions, lubricating oil heating and anti-freezing measures are required.
3. Dust control: Closed crushing chamber, dust cover or simple spray dust suppression is recommended to meet environmental requirements.
4. Noise restriction: If near residential areas, add sound insulation shed and arrange daytime production.

7. Economic & Management Conditions Suitable for Small Jaw Crusher

1. Low initial investment budget compared with large crushing station.
2. Simple operator training; fewer maintenance personnel.
3. Short project cycle, temporary project or short-term mining contract.
4. Low transportation cost for spare parts; jaw plates, toggle plates and bearings are universal small-model parts.

8. Unsuitable Working Conditions Summary

• Long-term 24-hour heavy load continuous production
• Large lump raw ore far exceeding feed opening
• High moisture, sticky materials without pretreatment
• No stable power supply and no generator support
• Large hourly output demand over 80 t/h
• Explosive, dangerous materials without explosion-proof modification