Construction aggregate production line

Project Overview

This project is a full EPC general contracting project delivered by Zhongyu Dingtian, designed as a large-scale intelligent and eco-friendly sand and aggregate production line primarily processing limestone. The line achieves an annual output of 4 million tons, supplying high-quality aggregates across five product specifications to meet diverse construction and infrastructure demands.

The project represents a comprehensive approach to modern aggregate production, where the entire scope from construction and equipment installation to environmental design, completion and commissioning was fully undertaken by Zhongyu Dingtian under a single EPC contract. This integrated delivery model ensures seamless coordination across all project phases, eliminating the delays and compatibility issues that arise when multiple contractors are involved.

Key project parameters:

• Processed material: Limestone
• Annual output: 4 million tons
• Project type: Full EPC general contracting
• Delivery model: Single-source responsibility from design to commissioning

Product Specifications

The production line processes limestone into five distinct product fractions, each serving specific applications in construction, road building and concrete production.

• Stone powder: Fine by-product suitable for cement additives and soil conditioning
• 5 to 10 millimeters: Fine aggregate for concrete and mortar applications
• 10 to 20 millimeters: Medium aggregate for structural concrete and road base
• 20 to 30 millimeters: Coarse aggregate for heavy-duty concrete and infrastructure
• 30 to 40 millimeters: Large aggregate for drainage, road sub-base and railway ballast

Equipment Configuration and Process Flow

As a full EPC project, Zhongyu Dingtian supplied and installed the complete set of crushing, screening, conveying and environmental protection equipment. The process flow follows a systematic multi-stage approach designed for efficient limestone processing.

• Raw Material Feeding: Limestone raw material is fed into the primary crushing stage through heavy-duty vibrating feeders equipped with pre-screening bars to remove undersized material and reduce unnecessary crusher load.
• Primary Crushing: The main crushing stage reduces large limestone blocks to intermediate sizes, preparing the material for secondary processing and shaping.
• Secondary Crushing and Shaping: Further reduction and particle shape optimization produce well-graded aggregates with cubic particle profiles suitable for high-value construction applications.
• Multi Stage Screening: High-frequency vibrating screens classify the crushed material into the five required product specifications, with oversize material returned to the crushing circuit for reprocessing to maximize yield.
• Material Conveying and Storage: Anti-abrasive belt conveyors transfer material between processing stages and into finished product storage, ensuring seamless material flow throughout the plant.
• Environmental Protection System: Integrated dust collection and suppression equipment operates across all transfer points and crushing stations, maintaining clean air quality within the enclosed production environment.

Project Features

Full EPC General Contracting

The entire project, including construction, equipment installation, environmental design, completion and commissioning, was fully undertaken by Zhongyu Dingtian. This single-source delivery model ensures unified quality control, streamlined project management and clear accountability across all phases, from initial site preparation through to final production handover.

Intelligent Mine System

The application of an intelligent mine system establishes this project as a benchmark for smart aggregate production. The system provides real-time monitoring and control across the entire production process, enabling data-driven decision making, remote equipment management and predictive maintenance that together maximize operational efficiency and minimize unplanned downtime.

Eco Friendly and Green Production

The production line is designed as a large-scale eco-friendly facility, integrating environmental protection measures throughout the plant. Dust collection equipment, enclosed material handling and green site design work together to achieve low-emission operation, while the intelligent system optimizes resource utilization and reduces energy consumption per ton of output.

Benchmark for Large Scale Production

By combining full EPC delivery, intelligent system integration and comprehensive environmental design, this project sets a benchmark for eco-friendly, intelligent and large-scale sand and aggregate production, demonstrating how modern aggregate plants can achieve both high volume output and environmental responsibility simultaneously.

FAQ

Q1: What does full EPC general contracting cover for this sand and aggregate production line?

Full EPC general contracting means that Zhongyu Dingtian takes single-source responsibility for the entire project scope, including construction, equipment installation, environmental design, completion and commissioning. This eliminates the need for the client to coordinate multiple contractors or suppliers, reducing project timeline and risk while ensuring unified quality control. Every phase from site preparation through equipment supply, installation, testing and final production handover is managed under one contract with clear accountability.

Q2: How does the intelligent mine system improve production efficiency?

The intelligent mine system provides real-time monitoring and centralized control across the entire production process, from raw material feeding through multi-stage crushing, screening and finished product output. By tracking throughput, equipment status and product quality metrics in real time, the system enables operators to make immediate adjustments that optimize performance. Predictive maintenance alerts reduce unplanned downtime, while automated process control minimizes manual intervention, together maximizing production efficiency for the 4 million ton annual output target.

Q3: What environmental protection measures are implemented in this production line?

The production line integrates environmental protection as a core design principle rather than an add-on. Dedicated dust collection equipment operates at all key transfer points and crushing stations, enclosed material handling prevents fugitive emissions, and the environmental design covers the entire plant layout to minimize environmental impact. Combined with the intelligent system's ability to optimize energy consumption per ton of output, these measures enable large-scale aggregate production that meets modern environmental standards while maintaining high production volumes.

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.