Large-Scale Limestone Mine Solution for Aggregate Production Lines
Aggregate Production Line Project Overview
Project Scale: Annual production capacity of 3 million tons; two DLPCZ1820 hammer crushers (one in operation, one on standby), with a maximum capacity of 1,500 tons per hour per unit; four product specifications: 0–5 mm stone powder, 5–10 mm, 10–20 mm, and 20–31.5 mm; the proportion of 1–3 cm material can be flexibly adjusted between 30% and 70%.
Application Scenarios: Long-term mining at large limestone quarries; aggregate supply for high-end projects such as expressways, high-speed railways, ready-mix concrete, and precast components.
Core Challenges: In 3-million-ton-per-year production lines, frequent equipment failures lead to significant losses due to line-wide shutdowns; traditional two-stage crushing systems involve high investment and operating costs; manual operations are labor-intensive and management is inefficient; environmental non-compliance with dust and wastewater standards risks production suspension.
Solution Highlights: A dual-unit DLPCZ1820 hammer crusher configuration (one in use, one on standby) ensures maintenance without production downtime; single-stage crushing with direct screening replaces the traditional two-stage process, reducing equipment requirements; DCS intelligent central control with PID algorithm for automatic load adjustment, one-button start/stop, and sequential shutdown in case of failure; the "Mine Manager" mobile app enables remote monitoring, reducing labor by over 30%; pulse bag dust collectors achieve 98% efficiency with dust levels below 10 mg/m³, and wastewater is 100% closed-loop recycled; the proportion of 1–3 cm material can be flexibly adjusted between 30% and 70% to adapt to market demand fluctuations.
Aggregate Production Line Process Flow
Primary Crushing: The DLZGC2050 vibrating feeder ensures uniform feeding with a maximum feed width of 1,000 mm. The DLPCZ1820 hammer crusher performs single-stage crushing to a medium particle size. With a dual-unit configuration (one in use, one on standby), the entire line remains operational during maintenance, achieving a 40% increase in crushing efficiency compared to traditional processes. Core components are forged from high-strength wear-resistant steel and equipped with an intelligent lubrication system, extending equipment lifespan by over 30%.
Screening: The DL3YKZ3680 and 3080 series circular vibrating screens achieve 95% screening accuracy, separating four specifications in a single pass: 0–5 mm, 5–10 mm, 10–20 mm, and 20–31.5 mm. The proportion of 1–3 cm material is adjustable from 30% to 70%, allowing flexible adaptation to market demands.
Environmental Protection: The fully enclosed workshop is equipped with a pulse baghouse dust collector, achieving 98% dust removal efficiency with dust levels below 10 mg/m³. Wastewater undergoes 100% closed-loop recycling with zero discharge, and all environmental indicators meet international standards.
Smart Control: The DCS central control system uses PID algorithms to automatically regulate feed rates, preventing overloads and idling. One-button start/stop functionality triggers automatic audible and visual alarms in case of faults, followed by a sequential shutdown procedure, boosting processing efficiency by 60%. The Mine Manager app provides real-time updates on production output, equipment status, and silo inventory. RFID technology combined with automatic weighing eliminates human tampering, and smart loading ensures an error margin of within ±0.5%.
Aggregate Production Line EPC Service Scope
Solution Design: Free on-site survey prior to purchase; customized solutions based on raw material characteristics and site conditions; 3D layout diagrams and equipment lists provided by our in-house provincial-level engineering R&D center and aggregate testing center.
Equipment Manufacturing: The main unit, the DLPCZ1820 hammer crusher, and the circular vibrating screen are all manufactured in-house; core components are forged from high-strength wear-resistant steel with intelligent lubrication; the entire line is ISO 9001 and CE certified.
Installation and Commissioning: Our core team monitors equipment transportation throughout the process, provides installation guidance within 24 hours of arrival, and ensures trial operation and full production capacity within 3 days. We bear the costs of trial operation wear and tear; for hard materials such as granite, the crushing chamber design can be upgraded.
Operation and Maintenance Management: 2-year warranty; free replacement for misaligned or damaged conveyor belts; spare parts delivered to site within 72 hours; 14 regional service centers covering major mining areas conduct regular follow-ups to establish equipment health records; an intelligent management platform provides real-time monitoring of equipment health and regularly pushes system upgrade and process optimization recommendations; free training for operators and maintenance personnel, along with provision of equipment manuals, assembly drawings, and wear-resistant parts lists.
Aggregate Production Line Project Case Studies
Project Name: Large-Scale Limestone Aggregate Production Line in Quang Ninh, Vietnam
Project Scale: Annual production capacity of 3 million tons
Raw Material Characteristics: Medium-hardness limestone with a maximum feed size of 1,000 mm
Process Configuration: Two DLPCZ1820 hammer crushers (one in operation, one on standby), DL3YKZ3680 and 3080 circular vibrating screens, DCS intelligent central control system, pulse baghouse dust collector, and closed-loop wastewater recycling system
Finished Product Specifications: Four grades—0 to 5 mm, 5 to 10 mm, 10 to 20 mm, and 20 to 31.5 mm; adjustable proportion of 1 to 3 cm material
Customer Feedback: The single-stage crushing and direct screening process replaced the traditional two-stage process, reducing both capital and operating costs. The DCS system's PID algorithm automatically adjusts load, reducing specific energy consumption by 18% and improving fault resolution efficiency by 60%. The finished product qualification rate exceeds 98%, enabling direct supply to local highway and ready-mix concrete projects. Dust levels are below 10 mg/m³, and with zero wastewater discharge, the facility has passed Vietnamese environmental inspections. The entire line has obtained CE certification and cleared customs without delay. Labor costs have been reduced by over 30%, and management is handled via mobile devices. The dual-hammer crusher configuration (one in use, one on standby) ensures uninterrupted production during maintenance, with annual downtime not exceeding two instances.
Aggregate Production Line FAQ
Q: Will the dual hammer crusher configuration (one in use, one on standby) increase investment costs?
A: Although the initial investment for the dual-unit configuration is slightly higher, it ensures uninterrupted production during maintenance periods. For a 3-million-ton-per-year production line, the loss from a single day of downtime far exceeds the cost of a single hammer crusher. In the long term, the overall investment is lower and the payback period is shorter.
Q: How can the proportion of 1–3 cm material be adjusted?
A: By adjusting the screen mesh configuration of the circular vibrating screen and the feeding parameters, the proportion can be flexibly adjusted between 30% and 70% without replacing the main equipment modular hammer crusher production line. This allows for rapid switching of output ratios in response to market price fluctuations for aggregates, maximizing profits.
Q: How do overseas customers maintain and operate the DCS intelligent control system?
A: The Mine Manager app enables remote mobile monitoring of production output, equipment status, and silo inventory. It automatically sends alerts for malfunctions and regularly pushes maintenance schedules high end infrastructure aggregate equipment. The intelligent management platform monitors equipment health in real time and periodically provides system upgrade and process optimization recommendations. With 14 regional service centers, spare parts are delivered within 72 hours.
Q: How is zero wastewater discharge achieved?
A: Production wastewater is treated through sedimentation and concentration, with the clarified water reused in the sand washing and dust removal processes. Sludge is filtered, and the resulting residue can be used for brick manufacturing or backfilling low maintenance high durability crushing plant. The entire production line operates on a 100% closed-loop wastewater recycling system with no external discharge, meeting the most stringent environmental standards both domestically and internationally.
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