The DLKPC Double-Chamber Hard Rock Crusher is a high-performance crushing solution designed to replace traditional jaw and cone crushers, offering broad market prospects. Specifically engineered for mineral materials with a compressive strength of ≤60 MPa—including metal and non-metal ores, building materials and chemical raw materials, cement clinker, and refractory materials—this equipment utilizes high-impact crushing and a double-chamber structure to deliver a high crushing ratio, uniform product particle size, and stable operation. With a production capacity of 100–250 tons per hour and a maximum feed size of 180 mm, it can perform medium and fine crushing operations as a standalone unit, eliminating the need for jaw or cone crushers and simplifying production line configuration.
Hard Rock Crusher Equipment Highlights
Hydraulic Adjustment for Efficiency and Labor Savings: Hydraulic adjustment of the screen plates allows for quick adaptation to material particle size and wear conditions. Nut-based positioning ensures precision, saving time and labor while extending equipment lifespan.
Low-wear liner bolts: Hexagonal high-strength bolts with deep countersunk heads secure the liners, preventing bolt head wear caused by abrasive materials and ensuring long-term reliability.
Wide access door for easy maintenance: The hydraulically operated end access door features a large opening, allowing quick access to the rotor and internal components for simple maintenance and repairs.
Durable Hammer Discs: The rotor hammer discs feature extended wear protection edges for stable operation and easy disassembly when replacement is needed.
Quick Hammer Replacement Without Shutdown: Simply remove the bolts beneath the baffle plate to lower the main shaft, allowing for rapid replacement of hammers or the main shaft with minimal downtime.
Reinforced design for hard rock: Thicker liners and grate plates, along with extended hammer heads, are specifically designed for hard rock crushing, ensuring long component life and stable, durable performance
Hard Rock Crusher Application Scenarios
Metal ore beneficiation: Fine crushing of metal ores such as iron ore and copper ore
Non-metallic mineral processing: Crushing of various non-metallic minerals
Cement industry: Fine crushing of cement clinker
Building materials and chemicals: Crushing and processing of raw materials for building materials and chemicals
Refractory Materials: Fine crushing and preparation of raw materials for refractory materials
Hard Rock Crusher Process Flow
Customized process for fine and medium crushing of ore:
Upstream Feed: Material discharged from upstream primary crushers or raw ore (≤180 mm) is uniformly fed into the double-chamber hard rock crusher via a feeder. Feed rate is precisely controlled to ensure even distribution of material within the double chambers.
Dual-Chamber High-Impact Crushing: High-speed rotors drive hammers to perform high-impact crushing on the material. The material undergoes repeated collisions and self-crushing within the dual chambers, achieving a high crushing ratio and producing fine, uniform, and qualified finished products in a single pass. The dual-chamber design ensures more thorough crushing and a high first-pass yield.
Hydraulic Adjustment for Particle Size Control: The screen plates are rapidly adjusted via a hydraulic system to precisely control the discharge particle size based on material characteristics and wear conditions. Nut-based positioning ensures accuracy, making the adjustment process quick and effortless.
Screening and Closed-Circuit Operation: The discharge is graded by a vibrating screen; qualified products are sent to the stockpile, while oversized material is returned for re-crushing, forming a closed-circuit operation. The finished product has uniform particle size and can directly meet the requirements of downstream mineral processing or end-product specifications.
Hard Rock Crusher Process Advantages
A single unit can replace a two-stage process consisting of a jaw crusher and a cone crusher, reducing the number of required units by 1–2. This saves over 30% in investment and floor space, while lowering overall operating costs by 20%.
Services
Solution Design
We provide customized medium and fine crushing solutions based on ore characteristics, hardness levels, production capacity requirements, and finished product specifications. This includes equipment selection, process flow design, layout planning, and return on investment analysis.
Equipment Manufacturing: Strictly adhering to ISO quality standards, core components (rotors, hammers, liners, and grating plates) are precision-manufactured from high-quality wear-resistant materials. All units undergo no-load test runs and hydraulic system integration testing prior to shipment.
Installation and Commissioning: Professional engineers provide on-site installation guidance, complete commissioning and load testing, and conduct comprehensive operator training to ensure stable production startup.
Operation and Maintenance Management: Full lifecycle operation and maintenance services, including regular inspections, supply and replacement of wear parts, hydraulic system maintenance, remote technical support, and upgrade and retrofit solutions.
Hard Rock Crusher Project Case Study
Mandalay, Myanmar Non-metallic Mineral Crushing Project
Project Location: Mandalay Region, Myanmar Equipment Configuration: 1 DLKPC Double-Chamber Hard Rock Crusher Material Processed: Mixture of non-metallic minerals and raw materials for building materials and chemicals (compressive strength 45–58 MPa, feed size ≤150 mm) Design Capacity: 180 tons per hour
Project Background: The client is a local non-metallic mineral processing enterprise. Previously, they used a two-stage process consisting of a jaw crusher and a cone crusher. This setup required high equipment investment and occupied a large footprint. The cone crusher liners needed to be replaced every 15 days, resulting in frequent maintenance and high costs. Additionally, significant fluctuations in the final product particle size affected the efficiency of downstream mineral processing.
Solution: A single DLKPC double-chamber hard rock crusher was installed to replace the original two-stage process. This single high-impact double-chamber crusher handles both medium and fine crushing. Hydraulic screen plate adjustment ensures precise particle size control, while thickened liners and extended hammers effectively handle abrasive materials.
Operational Results: After commissioning, the process was simplified from two stages to one, reducing the number of units by two and shrinking the footprint by 40%. The final product size is uniform and stable, with the first-pass yield increasing by 28%. The replacement cycle for the thickened liners has been extended to 45 days—a threefold improvement over the original cone crusher. The hydraulic access door and quick-change hammers allow for maintenance downtime of only 2.5 hours per session. Customer feedback indicates a significant reduction in both equipment investment and operating costs, and the solution has been recommended to industry peers.
Technical parameters:
Model
Inlet size W×L (mm)
Processing capacity (t/h)
DLKPC1313
1400×600
250-350
DLKPC1316
1700×600
300-450
Hard Rock Crusher FAQ
Q: How does the dual-chamber hard rock crusher replace jaw crushers and cone crushers? Does it meet crushing performance standards?
A: The dual-chamber hard rock crusher utilizes a dual-chamber structure combined with a high-speed rotor for high-impact crushing. It features a high crushing ratio and can complete medium and fine crushing operations as a single unit, eliminating the need for separate crushing stages using jaw or cone crushers. The final product has uniform particle size and a high first-pass yield. Feedback from actual projects indicates that the first-pass yield has increased by 28% compared to traditional two-stage processes, fully meeting downstream mineral processing and product requirements, while significantly reducing equipment investment and footprint.
Q: Is it easy to replace the hammers on the double-chamber hard rock crusher? How long does it take to shut down the machine?
A: Replacing the hammer heads on this equipment is extremely convenient. Simply remove the bolts beneath the baffle plate to lower the main shaft; the hammer heads can be quickly installed or removed without disassembling the entire machine. Actual project data shows that a single hammer head replacement takes only about 2.5 hours, reducing downtime by more than 70% compared to replacing liners on traditional cone crushers. The wide-opening hydraulic end maintenance door further simplifies maintenance operations.
Q: Do the liners on the double-chamber hard rock crusher wear out quickly when processing abrasive materials?
A: The liners on this equipment feature a reinforced design and are secured with deep-hole countersunk hexagonal high-strength bolts, preventing abrasive materials from directly wearing down the bolt heads and extending liner lifespan. Feedback from actual projects indicates that the replacement cycle for the thickened liners reaches 45 days, which is three times longer than the service life of traditional cone crusher liners. Additionally, the hydraulic grating plates allow for quick adjustment to compensate for wear gaps, eliminating the need for frequent replacements due to wear and significantly reducing overall maintenance costs.
Contact us today to receive a customized crushing solution and quote for our double-chamber hard rock crusher. With over a decade of industry expertise and serving more than 50 countries and regions worldwide, we make your crushing line more efficient and hassle-free.
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