River Pebble Crushing Production Line
River pebble (pebble) is a common hard riverbed material with high hardness (Mohs hardness 6-7) and strong abrasiveness. It is widely used in construction aggregates (concrete above C30), machine-made sand (high-quality sand with MB value <1.4), garden paving and other scenarios. This article will systematically analyze the core elements of the river pebble crushing production line, from process configuration to cost control, to help you build an efficient and stable production line.
1. Typical Production Line Configuration Scheme
(1) Scheme 1: High-capacity hard rock dedicated line (300-500t/h)
Applicable scenarios: large-scale sand and gravel plants, aggregate export projects
River pebbles → vibrating feeder (soil removal) → jaw crusher (coarse crushing) → single-cylinder hydraulic cone crusher (medium crushing) → multi-cylinder hydraulic cone crusher (fine crushing) → vertical shaft impact crusher (sand making) → circular vibrating screen (grading) → sand washing machine (mud removal) → finished product silo
Core equipment:
Coarse crushing: C6X jaw crusher (feed particle size ≤1200mm, discharge ≤250mm)
Medium and fine crushing: HST single-cylinder cone crusher (discharge port 8-25mm, wear-resistant parts life 800h+)
Sand making: VSI6X impact crusher (“stone-on-stone” mode, sand production rate 40-50%)
(2) Solution 2: Small and medium-sized mobile production line (50-200t/h)
Applicable scenarios: river management, temporary engineering projects
Equipment combination:
Crawler mobile jaw crusher (coarse crushing) + tire mobile cone crusher (fine crushing) + mobile screening station
Advantages: No infrastructure required, can be put into production within 7 days (such as Sany SYMONS series mobile crusher)
2. Key Process Optimization Points
(1) Energy-saving techniques in the crushing stage
Laminated crushing is preferred: the cone crusher cavity type should be a standard coarse cavity type (such as EC) to increase the processing capacity of a single machine.
Circulation load control: The return ratio after screening is recommended to be ≤30% to avoid overloading the cone crusher.
(2) Sand making link quality improvement strategy
Impact crusher speed adjustment:
40-50m/s (produce coarse sand, used for concrete)
60-70m/s (produce fine sand, used for dry-mixed mortar)
(3) Environmental compliance design
Wastewater treatment system: sand washing wastewater is reused through sedimentation tank + filter press (to achieve zero emission)
3. Industry Cutting-Edge Technology
AI intelligent control system:
Monitor the crusher load through vibration sensor and automatically adjust the feeding speed (such as XCMG smart mining system)
Application of super wear-resistant materials:
Ceramic composite lining (lifetime extended by 3 times, but cost increased by 50%).
