In industries such as steelmaking, mining, power generation, and cement production, efficient storage and retrieval of bulk materials like coal, iron ore, and limestone are critical to uninterrupted operations. One key piece of equipment that plays a pivotal role in bulk material reclaiming is the bridge-type scraper reclaimer.

This highly effective, automated machine is essential for blending and reclaiming bulk materials from stockpiles in a consistent and energy-efficient manner. However, to ensure optimal performance and longevity, proper operation and maintenance are crucial.

In this guide, we’ll walk through the step-by-step procedures for operating and maintaining bridge-type scraper reclaimers, and introduce how Dadi, a leading private enterprise in bulk material handling systems and metallurgical equipment, delivers advanced, reliable solutions tailored for heavy industry environments.

What Is a Bridge-Type Scraper Reclaimer?

A bridge-type scraper reclaimer is a continuous reclaiming machine used to recover material from longitudinal stockpiles in large storage yards or silos. It consists of:

A bridge structure spanning the width of the stockpile

A traveling trolley that carries the scraper arm

Scraper blades or chains that drag material toward a discharge point

A rail system for longitudinal movement

Its design allows for uniform material reclaiming while blending different grades or types of bulk material, ensuring consistency in downstream processes like smelting, combustion, or blending.

Step-by-Step Guide to Operating a Bridge-Type Scraper Reclaimer

Step 1: Pre-Start Inspection

Before operating the machine, perform a thorough inspection:

Check for mechanical integrity—inspect scraper chains, blades, rollers, and structure.

Inspect lubrication points and refill grease/oil where needed.

Test the electrical control system, including limit switches, sensors, and emergency stop buttons.

Ensure there are no obstructions along the rails and in the stockpile area.

Confirm the material to be reclaimed is within the allowable specifications (density, moisture, particle size).

Tip: Dadi’s reclaimers feature integrated diagnostic systems that streamline pre-start checks and alert operators to abnormalities before startup.

Step 2: System Start-Up

Once safety checks are completed:

Power on the main control system (usually via PLC or SCADA interface).

Engage the main drive motors and trolley drive systems.

Activate the scraper mechanism and start with a slow reclaiming speed for initial alignment.

Monitor sensor feedback for scraper arm positioning and material flow.

Dadi's equipment includes automated start-up sequences to reduce operator workload and eliminate manual timing errors.

Step 3: Normal Operation

During normal operation, the bridge-type scraper reclaimer:

Moves longitudinally along the stockpile while the scraper arm pulls material toward a conveyor or discharge point.

Ensures even reclaiming from the pile surface to avoid segregation.

Adjusts scraper arm height and speed automatically to match reclaiming requirements.

Operators should:

Continuously monitor motor currents, scraper chain tension, and reclaiming rate.

Use the HMI (Human-Machine Interface) to adjust reclaiming parameters when needed.

Maintain visual awareness to detect unusual material behavior or wear.

Dadi designs their reclaimers with real-time monitoring systems, enabling predictive maintenance and energy-efficient operation.

Maintenance Best Practices

To ensure long-term performance and safety, regular maintenance is essential. Here's how to keep your bridge-type scraper reclaimer in top condition:

Daily Maintenance

Clean accumulated material from scraper chains and the frame.

Check for unusual noise or vibration during operation.

Confirm that lubrication systems are functioning properly.

Weekly/Monthly Maintenance

Inspect the drive chains, sprockets, guide rollers, and replace if worn.

Check the tensioning systems and adjust if necessary.

Test safety interlocks and all sensor functions.

Quarterly or Annual Maintenance

Conduct a full system inspection with shutdown procedures.

Perform structural checks for corrosion or fatigue, especially on the bridge beam and rail supports.

Update PLC software and firmware, if applicable.

Record wear trends and service logs for predictive maintenance planning.

Dadi’s after-sales support includes maintenance scheduling, remote diagnostics, and on-site technical services, helping customers ensure minimal downtime and maximum equipment life.

Why Choose Dadi for Bridge-Type Scraper Reclaimers?

With years of experience in bulk material handling and metallurgical equipment, Dadi has become a respected name in industries ranging from mining to steel and cement.

What Sets Dadi Apart?

Custom Engineering: Every reclaimer is tailored to customer-specific stockpile layout, material type, and throughput needs.

Advanced Control Systems: Dadi’s reclaimers integrate automation, remote monitoring, and real-time diagnostics.

Robust Design: Engineered to withstand heavy loads, harsh weather, and continuous operation.

Integrated Systems: Compatible with conveyors, stackers, feeders, and storage management systems.

Technical Expertise: From layout planning to commissioning, Dadi offers full technical support and lifecycle services.

Conclusion

Bridge-type scraper reclaimers are indispensable in modern bulk material logistics. Their ability to automate and blend materials efficiently makes them critical for consistent downstream processing. However, achieving optimal performance requires proper operation, preventive maintenance, and quality equipment.

With its commitment to excellence and innovation, Dadi delivers high-performance scraper reclaimers that meet the demands of today’s heavy industries. By choosing Dadi, you gain a reliable partner who understands not only the machinery—but also the materials and processes that drive your success.

The Working Principle and Benefits of Bridge-Type Scraper Reclaimers