Precision Inventory Measurement and Intelligent Control for Iron Ore: Solidat SLDL5300 3D Radar Scanner Empowers Smart Management of Circular Coal Bins

In the iron ore industry, circular coal bins serve as core facilities for raw material storage. Accurate material level measurement and efficient inventory management directly impact production continuity and cost control. Taihe Iron Mine under Chongqing Iron & Steel Group, a domestic super-large mine, had long struggled with the inefficiency and risks of traditional inventory measurement methods. The introduction of the Solidat SLDL5300 series 3D radar scanner has resolved the challenges of circular coal bin inventory management, enabling a leap from "manual estimation" to "intelligent precision."

I. Core Pain Points in Inventory Measurement for Circular Coal Bins in Iron Mines

Taihe Iron Mine operates three large circular coal bins for storing iron ore fines. Previously reliant on manual inventory checks combined with single-point radar, it faced industry-wide challenges:

• Extreme Operating Environments

 High concentrations of iron ore dust inside bins obstructed visibility. Manual checks required heavy protective gear, posing safety risks (e.g., working at heights, dust inhalation). Inventory data was easily compromised by environmental interference.

• Significant Measurement Blind Spots

The circular structure caused material imbalance and arching. Traditional single-point radar could only measure localized spots, failing to capture the full material surface. Volume errors reached 8–10%, distorting inventory data and impacting procurement/production planning.

• High Costs, Low Efficiency

Manual inventory for one bin required 2–3 personnel over 1–2 days, necessitating production halts. Annual inventory costs were substantial. Fragmented radar data required manual consolidation, preventing real-time monitoring.

• Poor Equipment Adaptability

Temperature fluctuations (-10°C to 60°C) and dust accumulation caused severe signal attenuation in traditional devices, leading to frequent data disconnections and high maintenance demands.

II. Customized Solution: SLDL5300 Series

Tailored to circular bin structures and harsh iron mine conditions, Solidat deployed a fully automated system centered on the SLDL5300 3D radar scanner, optimizing hardware and software integration:

1. Scientific Deployment for Full Coverage

Each bin was equipped with one SLDL5300 scanner, centrally suspended from the apex with a custom stainless steel dust-proof casing. This avoided feed inlets and supports, enabling 360° panoramic scanning. Three units networked via fiber optics ensured real-time data synchronization to a central control room, supporting "single-bin independent monitoring, multi-bin centralized management."

2. Robust Technology for Harsh Environments

• Superior Anti-Interference

A 905nm laser wavelength optimized for iron ore dust penetration (up to 100g/m³) ensured <5% signal attenuation. IP67 rating guaranteed stable operation in humid, dusty conditions.

• Wide Temperature Adaptability

Operating range of -40°C to 80°C eliminated the need for additional temperature control.

• High-Precision Measurement

240,000 points/second sampling, 0.0005° horizontal accuracy, and 150° vertical scanning generated 3D models with volume error ≤0.5% and point accuracy ±20mm, far exceeding industry standards.

3. Intelligent Integration for Full Automation

Seamless integration with the APM digital stockyard system created a "measurement-analysis-control" loop:

• Real-Time Monitoring: 3D models visually identified material imbalance or arching.
• Automated Reporting: Volume, mass, and height reports generated within 5 minutes (Excel/PDF export) and synced with ERP systems.
• Intelligent Unloading Guidance: RS485-linked PLC systems adjusted unloading trolley positions based on low-material zones, optimizing bin utilization.

III. Application Results: Cost Savings, Efficiency, and Safety

• 95% Faster Inventory: Time reduced from 1–2 days to <5 minutes per bin. Full inventory for three bins completed in 15 minutes, eliminating production halts and saving >¥300,000 annually.
• Precision Leap: Volume error dropped to <0.5%, achieving 99.5% inventory accuracy and reducing capital costs by >¥1 million yearly.
• Zero Safety Risks: Eliminated manual bin climbing, avoiding >50 high-altitude operations and dust exposure hazards annually.
• 70% Lower OPEX: Maintenance-free design and 24/7 remote support cut operational costs by 70% vs. traditional systems.

IV. Core Technical Advantages

• 3D Panoramic Imaging: Overcame single-point radar limitations with full-domain coverage.

• Environmental Resilience: High-speed brushless dust-removal fan (≥95% efficiency) ensured stability in extreme conditions.
• Seamless Integration: Dual 4–20mA/RS485 outputs supported direct PLC/DCS integration.
• Lightweight Design: 3.8kg unit enabled single-person installation in narrow spaces.

V. Conclusion: The Intelligent Upgrade Imperative

The Solidat SLDL5300 series drives iron mines toward precision, automation, and intelligence in inventory management. Its anti-interference capabilities, ultra-high precision, and flexible deployment make it the ideal solution for circular coal bins, delivering significant efficiency gains and setting a replicable industry standard.

From super-large to small-medium mines, the SLDL5300 series empowers enterprises to overcome traditional inventory challenges, injecting strong momentum into high-quality industrial development.