In the modern construction and mining industries, the demand for high-quality sand and gravel is skyrocketing. Finding the right aggregate processing solutions is no longer just about breaking stones; it is about maximizing yield, ensuring superior particle shape, and reducing operational costs. Liming Heavy Industry a world-leading manufacturer of stone crushing and screening equipment, offers integrated solutions tailored to handle diverse materials from hard granite to abrasive basalt.
Industry Pain Points in Aggregate Production
- High Operating Costs: Frequent replacement of wear parts in low-quality crushers leads to excessive downtime.
- Poor Product Quality: Flaky or elongated aggregate shapes fail to meet strict international standards for high-strength concrete.
- Environmental Pressure: Traditional crushing plants often struggle with dust control and noise pollution regulations.
Our Integrated Solutions: From Raw Material to High-Value Product
Liming Heavy Industry provides a multi-stage aggregate processing solution designed for durability and precision. Whether you are processing limestone for cement or granite for high-speed railways, our equipment ensures optimal performance.
Material Characteristics and Processing
Common materials like Granite and Basalt are characterized by high hardness and abrasiveness. Our process typically involves:
- Primary Crushing: Using the PEW Series European Jaw Crusher to reduce large blocks.
- Secondary Crushing: Utilizing the HST Single Cylinder Hydraulic Cone Crusher for high-efficiency size reduction.
- Sand Making & Shaping: The VSI6X Series Vertical Shaft Impact Crusher ensures cubic final aggregate.
Special Focus: Limestone Processing Characteristics
Limestone is a sedimentary rock composed largely of calcium carbonate (CaCO3). As a primary raw material in the aggregate processing solutions industry, it has unique properties that dictate the choice of machinery:
- Hardness: Limestone typically has a Mohs hardness of 3 to 4. While relatively soft, it requires a crushing strategy that minimizes the production of excessive “fines” (waste dust).
- Abrasiveness: Most limestone has low abrasiveness, which extends the lifespan of wear parts. However, if the silica content exceeds 5%, specialized liners are necessary.
- The Ideal Solution: For limestone, we recommend the CI5X Series Impact Crusher. It utilizes high-speed striking energy to break stones along natural cleavage planes, resulting in superior cubic shape and a higher crushing ratio in a single pass.
Technical Specifications Comparison
| Equipment Model | Type | Max Feed Size (mm) | Capacity (t/h) | Main Advantages |
|---|---|---|---|---|
| PEW860 | Jaw Crusher | 720 | 200-500 | V-shaped crushing chamber, high ratio. |
| CI5X1520 | Impact Crusher | 700 | 350-550 | Optimized rotor, excellent cubic shape. |
| HST250 | Cone Crusher | 230 | 120-450 | Fully automatic PLC control. |
| VSI6X1150 | Sand Maker | ≤45 | 344-489 | Four-opening impeller, lower wear costs. |
Installation and Maintenance Guide
To ensure the longevity of your aggregate processing solutions, Liming Heavy Industry recommends the following:
- Foundation Preparation: Ensure a solid reinforced concrete foundation to minimize vibration.
- Regular Lubrication: Use specified lubricants for the main bearings and eccentric shafts to prevent overheating.
- Wear Part Monitoring: Regularly check jaw plates, blow bars, and mantle liners. Replacing them timely prevents damage to the machine frame.
Case Study: 500TPH Limestone Crushing Plant
In a recent project, a client required a high-capacity line for construction aggregate. Liming designed a customized solution featuring a PEW European Jaw Crusher and a CI5X Impact Crusher. The result was a 20% reduction in power consumption and a final product that perfectly met the “cubic shape” requirements for local highway construction, delivering a significant ROI.
Frequently Asked Questions (Q&A)
1. How do I choose between a Cone Crusher and an Impact Crusher?
Impact crushers (like the CI5X) are ideal for soft to medium-hard stones like limestone for better shape. Cone crushers (like the HST) are preferred for hard, abrasive materials like granite to reduce wear costs.
2. What makes Liming’s VSI6X better for sand making?
The VSI6X features a unique “Rock-on-Rock” design and a four-opening impeller, which improves throughput and reduces the wear-part replacement cycle.
3. Can these solutions be integrated into existing plants?
Yes, our equipment is designed with modularity in mind, making it easy to integrate into existing aggregate processing solutions for upgrades.
4. How often should maintenance be performed?
Daily inspections are recommended, with deep maintenance scheduled every 500 operating hours to check hydraulic systems and belt tension.
5. Does Liming provide on-site installation?
Absolutely. We provide global technical support, including on-site installation, commissioning, and operator training by our expert engineers.
Choosing the right aggregate processing solutions is critical for long-term success in the mining and construction sectors. With Liming Heavy Industry, you gain a partner dedicated to technical excellence and reliable service. Contact us today for a customized quote and technical drawing for your next project.