Project Overview
As Mongolia’s “New Revival Policy” continues to advance, infrastructure construction in the Ulaanbaatar metropolitan area and the Southern Energy Corridor has entered a peak phase. The demand for high-quality concrete for highways, bridges, social housing, and commercial buildings is surging. The core determinant of concrete quality lies in the particle shape and gradation of the aggregate.
To ensure the stable performance and market competitiveness of its self-produced concrete, a major Mongolian concrete batching plant invested in a 250 tons per hour (TPH) hard rock crushing and sand making production line in the outskirts of Ulaanbaatar.
The project utilizes basalt or granite as raw material and adopts a sophisticated “Three-Stage Crushing + Fine Shaping” process. Special emphasis is placed on controlling the particle shape and gradation of the finished aggregate, with the goal of producing high-end manufactured sand and crushed stone that complies with the European Standard (EN 12620). This allows for full-chain control, from “raw material quality” to “final concrete performance”.
Production Line Core Equipment and Process Flow
To meet the client’s stringent requirements for cubical particle shape, low needle/flaky content (<8%), and continuously stable gradation, the project employs an advanced three-stage process: “Jaw Crusher for Primary Crushing + Cone Crusher for Secondary/Tertiary Crushing + Impact Crusher for Shaping”. This forms an integrated, closed-loop system of “Crushing – Shaping – Screening”.
Process Flow Summary:
Feeding: Raw material is uniformly fed into the Jaw Crusher via a Vibrating Feeder for primary crushing.
Secondary Crushing: Coarsely crushed material enters the Hydraulic Cone Crusher for secondary and tertiary crushing.
Shaping Preparation: Crushed material is screened; qualified mid-size material proceeds to the Impact Crusher for shaping.
Final Classification: Shaped material returns to the Multi-Layer Vibrating Screen for final size classification.
Storage & Supply: Finished aggregate of various specifications are stockpiled separately. All finished products are directly supplied to the batching plant for ready-mix concrete production.
System Characteristics:
Superior Particle Shape: Impact crushing ensures aggregate has “excellent particle shape and optimal gradation”, significantly improving concrete strength and workability.
Stable Capacity: 250 TPH output, with an annual capacity up to 1.8 million tons, meeting the year-round demands of a large batching plant.
Intelligent Control: PLC + Touch Screen control system enables full-process automated operation and data traceability.
Environmental Compliance: Equipped with a comprehensive dust removal system and a circulating water treatment unit to ensure green production standards are met.
Positive Impact on Mongolia
This project is a strategic investment that contributes significantly to Mongolia’s infrastructure quality and industrial modernization.
1. Enhancing Concrete Quality and Engineering Durability High-quality aggregate substantially boosts concrete’s compressive strength, frost resistance, and durability. This provides reliable materials for critical projects such as the Ulaanbaatar Metro, New Airport Expressway, and the Central Business District, reducing long-term maintenance costs.
2. Reducing Raw Material Dependency for Batching Plants Achieving self-sufficiency in aggregate supply reduces reliance on imported materials or those from small, unregulated quarries. This mitigates the impact of raw material price volatility on production schedules, thereby enhancing the enterprise’s market competitiveness.
3. Promoting Standardization and Modernization of the Mongolian Building Materials Industry The project sets a “high-standard, high-quality” industry benchmark, guiding the Mongolian aggregate sector away from an “extensive” model towards a “refined” one, promoting the development and upgrade of national building material standards.
4. Fostering Local Employment and Technical Talent Development Project operation requires specialized personnel for operation, maintenance, and quality inspection, providing high-skilled positions for local workers and enhancing Mongolia’s professional capabilities in mining machinery and building material production through technical training.
5. Supporting Urban Sustainable Development High-performance concrete extends building lifespans, reduces resource waste and carbon emissions. This assists Ulaanbaatar in tackling the dual challenges of “urban expansion” and “environmental pollution”, promoting green urban construction.
6. Reducing Natural Sand Mining and Protecting the Ecosystem The use of manufactured sand as a substitute for river sand effectively alleviates the problem of excessive mining in river basins like the Tuul and Orkhon rivers. This helps protect the aquatic ecology and riverbank stability, aligning with Mongolia’s national policy on “Steppe Protection”.
