Page 18 - Bullion World Issue 10 Volume 05 October 2025

Bullion World | Volume 5 | Issue 10 | October 2025 IGC 2025: Where The World Meets India, Seminar Highlights

Technical Session-4: Update from Machinery Suppliers

Mr Ajay Raina – Advances in XRF for Jewellery Analysis

Mr Ajay Raina provided a detailed account of advances in
XRF technology tailored for jewellery analysis, emphasizing its
superiority over traditional methods due to its non-destructive
nature and quick result turnaround. Developments in detector
technology (especially Silicon Drift Detectors) and software have
enhanced the reliability and scope of analysis. He highlighted how
XRF has become an indispensable tool for both manufacturing and
retail segments, ensuring accuracy in gold purity verification. The
presentation also showcased real-world applications from leading
assay laboratories and manufacturing units in India. Moreover,
Mr Ajay underlined the importance of calibration standards and
operator training to achieve consistent and reproducible results.
Key Points:
• Modern XRF replaces traditional destructive testing methods effectively.
• Features improved detectors, software automation, and digital integration.
• Capable of analyzing complex alloys and coatings on jewellery.
• Supports regulatory compliance, fraud prevention, and consumer confidence.
• Environmental benefits by eliminating chemical waste.
• Future trends include AI and cloud-based data analysis.

Technical Session-4: Update from Machinery Suppliers

Mr Stefano Zoi – AI-Driven Automation in Refining

Mr Zoi introduced the Artificial Intelligence Detection (A.I.D)
system for automated control of acid dosage and reaction
monitoring in aqua regia-based refining. This intelligent system
employs sensors, pneumatic controls, and image analysis to
optimize the refining process, reduce reagent usage, emissions,
and enhance safety. He explained how the A.I.D system brings
precision and repeatability to refining operations that traditionally
depend on manual judgment. The presentation included
case studies from Italimpianti Orafi installations worldwide,
demonstrating measurable improvements in process efficiency
and environmental sustainability. Mr Zoi also discussed how
integration with digital dashboards and data analytics allows
operators to monitor and adjust processes remotely with high
accuracy.

Key Points:
• A.I.D system automates acid dosing based on real-time reaction assessment.
• Integrates pneumatic valves, sensors, and endoscopic cameras with AI.
• Results in reduced chemical usage and lower environmental footprint.
• Improves operational efficiency and consistency.
• Enhances workplace safety by early detection of abnormalities.
• Represents a leap toward Industry 4.0 standards in refining.

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