In recent years, with the advancement of the "Belt and Road" initiative and the rise of the global infrastructure boom, the demand for sand and gravel aggregates in the overseas market has continued to grow. However, many international projects face challenges such as inconsistent design standards, difficult equipment selection, and complex construction management.
EPC (engineering general contracting) model has become the first choice for overseas owners with its "turnkey" service advantage. This article will deeply analyze the EPC case of a certain overseas 250TPH aggregate production line, share the full process solution from design optimization, equipment selection to intelligent control, and provide the industry with replicable successful experience.
1. Project background: Demand for efficient aggregate production lines in harsh environments
1.1 Customer pain points
• Complex raw material characteristics: The project is located in Southeast Asia. The raw materials are mainly high-hardness granite and have a high mud content. Traditional crushing solutions are prone to equipment wear and production capacity not meeting standards.
• Strict environmental protection requirements: The local government has extremely high standards for dust and noise control, and must comply with ISO 14001 environmental certification.
• Tight schedule: The customer required the entire process from design to production to be delivered within 12 months.
1.2 Core advantages of EPC solutions
✔ Full process control: One-stop service from geological exploration → process design → equipment manufacturing → installation and commissioning → operation training to reduce the cost of multi-party coordination.
✔ Customized solution: Optimize the crushing and screening process according to the characteristics of the raw materials to ensure high output and low energy consumption.
✔ Intelligent control system: Use PLC automated management to achieve remote monitoring and fault warning to reduce manual dependence.
2. Technical solution analysis: How to achieve efficient and stable production of 250TPH?
2.1 Crushing process design | Three-stage crushing + wet dust removal
For high-hardness granite, the three-stage crushing solution of "jaw crusher + cone crusher + vertical shaft impact crusher" is adopted to ensure excellent finished product particle shape (needle-shaped <10%).
• Coarse crushing stage: PE750×1060 jaw crusher (anti-wear lining, suitable for high-hardness materials).
• Medium and fine crushing stage: HP300 multi-cylinder hydraulic cone crusher (laminated crushing, reducing energy consumption).
• Sand making and shaping: VSI5X vertical shaft impact crusher (combining crushing and shaping, improving the quality of machine-made sand).
Environmental optimization:
• Closed plant + pulse dust removal system, dust emission <20mg/m³.
• Water mist dust suppression device, used in the screening process to ensure no dust overflow.
2.2 Core equipment selection - high reliability + low maintenance cost
| Equipment type | Selection scheme | Advantages |
| Feeder | ZSW490×110 vibrating feeder | Variable frequency speed regulation, adapt to different feed amounts |
| Cone crusher | HP300 hydraulic cone crusher | Intelligent iron protection, reduce downtime |
| Screening equipment | 3YK3070 circular vibrating screen | Multi-layer screening, accuracy ±1mm |
| Belt conveyor | High temperature resistant and anti-deviation type | Long life design, maintenance-free |
2.3 Intelligent control system - digital management to reduce costs and increase efficiency
• Central control room: real-time monitoring of current, temperature, output and other data, automatic alarm for abnormalities
• Cloud data backup: Supports remote viewing of production reports on mobile phones/computers, facilitating cross-border management.
• Energy efficiency optimization module: Dynamically adjust motor power according to load, reducing comprehensive power consumption by 15%.
Project results: Delivery in 5 months, production capacity exceeds expectations
Production data: Actual production capacity reaches 270TPH (8% higher than customer expectations), and the finished aggregate has excellent particle shape, meeting ASTM C33 standards.
Environmental protection compliance: Dust and noise are both lower than local limits, making it a regional demonstration project.
Customer evaluation:
"It took only 5 months from signing to production. The EPC model has greatly reduced our management risks, and we will continue to cooperate in future expansion projects."
- Project owner
Industry enlightenment: The key to the success of overseas aggregate EPC projects
• Design tailored to local conditions: Raw material characteristics and environmental regulations vary greatly in different regions, requiring customized processes.
• Equipment reliability > price: Overseas operation and maintenance costs are high, and choosing equipment with low failure rate can reduce long-term costs.
• Intelligence and environmental protection are future trends: Automation control + green production will become the standard for international projects.
EPC model-China's smart manufacturing empowers global infrastructure
The success of the EPC case of the 250TPH aggregate production line confirms the competitiveness of Chinese companies in high-end equipment manufacturing, intelligent control systems, and international project management. In the future, with the growth of global mining and infrastructure demand, the EPC general contracting model will become an important tool for Chinese companies to "go overseas".
If you are planning an overseas aggregate project, please contact us for customized EPC solutions!
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