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Double Cavity Hard Rock Crusher For Granite River Pebble High Capacity Mining Crushing Equipment from Zhongyu Dingli is a heavy-duty crushing solution engineered to solve two critical pain points in hard rock processing: severe equipment wear and poor particle shape. As an experienced mining crusher manufacturer, we developed this dual-chamber impact crusher specifically for high-hardness materials including granite, cobblestone, basalt, and river pebbles. The symmetrical twin-cavity design dramatically increases material holding capacity and throughput compared to single-chamber designs, while multiple life-extending innovations reduce downtime and maintenance costs.
Key Highlights:
Application Scenarios: Hard rock crusher for mining (granite, basalt, iron ore crushing in quarries and open-pit mines), granite crusher machine for aggregate production (high-quality shaped aggregates for concrete and asphalt), river pebble crushing equipment for sand and gravel plants, and as secondary/tertiary crusher in multi-stage crushing lines.
Typical Three-Stage Hard Rock Crushing Line:
Vibrating Feeder → Jaw Crusher (Primary) → DLKPC Double Cavity Hard Rock Crusher (Secondary/Fine) → Vibrating Screen → Finished Aggregate
↘ Return Belt → Recrushing
Integrated with Upstream/Downstream Equipment:
Crushing Principle:
Feed → High-Speed Hammer Impact → Kinetic Energy Gain → Impact Plate Collision (Secondary Crushing)
↓
Particle-to-Particle Self-Crushing → Multiple Impact & Grinding
↓
Qualified Particles → Discharge Opening → Finished Product
| Phase | Details |
|---|---|
| Solution Design | Custom configuration: crusher model selection (DLKPC1313/1316) based on feed size (≤180mm) and capacity target (250-450 t/h), integration with existing jaw/cone crushers, multi-stage line layout |
| Equipment Manufacturing | High-chromium alloy hammers; thickened manganese steel liners; precision rotor balancing; full-load pre-delivery testing |
| Installation & Commissioning | On-site assembly, hydraulic system commissioning, remote control calibration, performance testing with actual material |
| Operator Training | Remote control operation, hydraulic gap adjustment, hammer rotation monitoring, liner wear inspection, safety protocols |
| After-Sales Support | 12-month warranty on major components, mining spare parts supply (hammers, liners, bearings), preventive maintenance plans, 24/7 technical support hotline |
| Model | Rotor Diameter × Length (mm) | Inlet Size (W × L, mm) | Motor Power (kW) | Processing Capacity (t/h) | Feed Size (mm) |
|---|---|---|---|---|---|
| DLKPC1313 | 1320 × 1420 | 1400 × 600 | 200 × 2 | 250–350 | ≤180 |
| DLKPC1316 | 1320 × 1720 | 1700 × 600 | 250 × 2 | 300–450 | ≤180 |
General Specs: Capacity 250–450 t/h | Max Feed ≤180mm | Dual-chamber symmetrical design | 360° reversible rotor | Hydraulic online gap adjustment | Dust-sealed casing
Case 1 — Granite Aggregate Plant (Southeast Asia)
Case 2 — River Pebble Sand & Gravel Project (China)
Case 3 — Basalt Quarry Expansion (Middle East)
Q1: How does this double cavity hard rock crusher solve the problems of severe wear and poor particle shape that are common when crushing granite and river pebbles?
A: Our double cavity hard rock crusher attacks both problems through structural and material innovations. For wear resistance: the dual-chamber symmetrical casing holds more material at once, reducing per-particle impact stress on liners; thermally clad bimetallic high-chromium alloy hammer heads feature a lengthened alloy section and narrowed adjacent gaps that eliminate side wear; hammer disc protective sleeves prevent disc body damage; and the main liner is thickened with deepened corrugations. For particle shape: the two-row hammer head design positions material at the optimal crushing zone, and the multi-stage crushing process — hammer impact → impact plate collision → particle self-crushing — produces well-formed cubic particles that meet national construction material specifications. The 360° reversible rotor evenly distributes wear across all hammer faces, extending service life without manual turning.
Q2: What maintenance advantages does this hard rock crusher for mining offer compared to traditional impact crushers?
A: Traditional impact crushers require manual liner adjustment and manual hammer head turning — labor-intensive tasks that demand shutdowns and multiple workers. Our high capacity stone crusher eliminates both: (1) hydraulic cylinders drive the casing to move left/right relative to the rotor, with remote-controlled online gap adjustment between hammers and liners without stopping the machine; (2) the rotor supports forward and reverse rotation, automatically evening out hammer wear and eliminating the need for manual turning; (3) an inspection door on the upper casing allows quick internal checks without full disassembly; (4) raised positioning blocks fix the liner in place so bolts only clamp rather than bearing shear forces, and double nuts with butterfly spring washers prevent loosening. Combined with mining spare parts availability and sealed bearing protection, total maintenance downtime is reduced by approximately 40% compared to conventional units.
Q3: Can this granite crusher machine integrate with existing crushing lines, and what support does the mining crusher manufacturer provide for overseas installations?
A: Yes, the DLKPC series is designed for seamless integration with upstream mining feeders, jaw crushers (primary crushing), cone crushers, and hammer impact crushers to form complete multi-stage crushing systems. The feed opening (1400×600mm or 1700×600mm) and ≤180mm max feed size are compatible with standard jaw crusher discharge. As a leading mining crusher manufacturer with 30+ years and 5,000+ global projects, we provide: on-site installation and commissioning by experienced engineers; operator training on remote control systems and hydraulic adjustment; 12-month warranty on all major components; preventive maintenance programs tailored to your material abrasiveness; and a 24/7 technical support hotline with remote diagnostic capability. All wear parts (hammers, liners, bearings, seals) are standardized and available through our global logistics network with air-freight delivery typically within 7 days.
Our sand and gravel aggregate production lines boast extensive and all-round coverage, and we offer a complete range of configurations from individual standalone equipment to full turnkey production lines, including Crushing Equipment, Sand Making Equipment, Screening Equipment, Feeding Equipment, Mining Conveyor and Mobile crusher. We provide customized crushing and processing solutions for a full spectrum of materials including bluestone, limestone, basalt, granite, pebble, coal gangue, calcite, quartz stone, dolomite, iron ore, barite, diabase, tuff and high calcium limestone, as well as targeted processing solutions for kaolin. We also deliver professional crushing solutions for industrial solid wastes such as slag and tailings, and comprehensive treatment solutions for construction & demolition waste. In addition to fixed production line solutions for various materials, we also supply flexible Mobile Crawler Unit Solutions to meet diverse on-site operation needs of sand and gravel aggregate production.
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Main Product:
Crushing Equipment,
Sand Making Equipment,
Screening Equipment,
Feeding Equipment,
Mining Conveyor,
Mobile Crusher
