River pebble, calcite, quartzite, marble, pebble, bentonite, iron ore, bluestone, mountain stone, water slag, limestone, weathered sand, diabase, granite, basalt and so on

Feed size:25-100mm
Productive capacity:5-450t/h

Application:Highway, railway, high-rise buildings, municipal, hydropower dam construction, concrete mixing station, sand and stone field, etc.

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Global Field Case Study

200 T/H River Pebble Manufactured Sand Production Line

Heavy-Duty 2PGY1500×1200 Crushing Circuit | High-Hardness Aggregate Processing

Project Location: Southeast Asia Infrastructure Aggregate Plant

1. The Customer’s Challenge

The client operates a major commercial aggregate plant supplying high-specification concrete sand for regional highway and bridge structures. Their primary raw material is local river pebble (cobblestone)—a highly abrasive material with an exceptionally high quartz content and a Mohs hardness rating of 7-8.

Previously, the plant utilized vertical shaft impact (VSI) crushers for secondary and fine crushing. Due to the severe abrasiveness of the pebbles, the VSI rotor tips and wear parts degraded every 3 to 5 days, resulting in skyrocketing maintenance costs and frequent production downtime. Furthermore, the massive power grid draw and excessive fine dust generated did not comply with local green industrial regulations.

River Pebble

2. Engineered Technology Blueprint

To address severe component wear and stabilize the production curve, APEX engineers deployed the 2PGY1500×1200 Large Hydraulic Double Roller Crusher. Operating on a static pressure extrusion framework, this design completely eliminates high-velocity impact friction:

Laminar Static Compression Crushing
The raw river pebble feeds directly between horizontally mounted, low-RPM counter-rotating rollers. Friction and gravity draw the aggregate into the narrowing zone where immense hydraulic static pressure shatters the stone along its natural crystalline boundaries, minimizing friction-induced wear.

High-Chromium Manganese Steel Alloy Roller Skins
The critical roller shells are engineered with specialized high-chromium manganese matrix metallurgy. This extension increases operational wear cycles by 3 to 5 times under constant contact with highly abrasive river pebbles.

Intelligent Hydraulic Shock Accumulators
When an uncrushable impurity (such as tramp iron or dense quartz clusters) enters the chamber, the active hydraulic system pulls back the movable roller automatically to discharge the obstruction safely, resetting the system within seconds without stopping continuous production.

3. Series Technical Parameters Reference

Model Reference	Roll Size (D×W mm)	Max Feed (mm)	Capacity (t/h)	Drive Power (kw)
2PGY750×500	φ750 × 500	≤ 40	20 – 30	2 × (22-30)
2PGY800×600	φ800 × 600	≤ 40	30 – 40	2 × (30-37)
2PGY800×800	φ800 × 800	≤ 40	40 – 50	2 × (37-45)
2PGY1000×800	φ1000 × 800	≤ 40	50 – 80	2 × (45-55)
2PGY1000×1000	φ1000 × 1000	≤ 60	80 – 100	2 × (75-90)
2PGY1200×1000	φ1200 × 1000	≤ 80	100 – 120	2 × (75-132)
2PGY1500×1200*	φ1500 × 1200	≤ 120	150 – 200	2 × (132-160)
2PGY1800×1000	φ1800 × 1000	≤ 100	250 – 300	2 × (250-315)
2PGY2000×1200	φ2000 × 1200	≤ 120	300 – 400	2 × (315-355)

4. Measurable Plant Outcomes (ROI)

Following a full operational quarter running the APEX hydraulic double-roll circuit architecture, the infrastructure plant documented significant improvements:

25% Savings
In Per-Ton Power Costs

3 – 5x Longer
Roller Skin Lifespan

Premium Shape
High Cubic Content, Low Fines

Replicate This Production Efficiency

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