Catalytic Converter Recycling for Processors

Introduction: For processors, catalytic converter recycling depends on more than collecting and milling material. Reliable data helps teams understand incoming lots, sort material, assess commercial terms, and plan the next refining step. A structured catalytic converter service can turn a prepared sample into clear information about platinum, palladium, rhodium, silver, and gold.

Why does material analysis matter to processors?

Material analysis gives processors a sound basis for handling each lot. It replaces broad assumptions with sample data that can support sorting, pricing discussions, and refining plans. Not every incoming load has the same composition. Even when the material comes from the same broad source, a processor still needs to understand the sample that represents the lot. Without that information, teams may have less certainty when they group material or discuss its value. This matters across the recycling chain. Collectors need clear data when trading material. Decanning companies need to understand the processed output. Milling and homogenization facilities need results that relate to the prepared sample. Refineries also need a reliable basis for later recovery work. The wider role of recycled catalyst material is well established. The U.S. Geological Survey provides public background on platinum recycling and spent automotive catalysts. For a processor, the practical point is simple: useful recovery decisions begin with sound material information.

How does testing fit into the recovery workflow?

Testing connects sample receipt with later commercial and refining decisions. Each analytical stage answers a different question about the material.

What happens when a sample arrives?

Loss on drying is performed through gravimetric drying. This step measures the change linked to drying and gives processors a clearer basis for reading the later results. It is especially relevant when teams compare incoming material or review settlement data.

What does XRF show?

XRF provides an initial assessment of composition and approximate precious metal concentration. These early findings guide the next stage of the analytical process. The laboratory uses the preliminary XRF results to adjust the fire assay and determine which additional components are required. This makes XRF a useful screening stage, but it is not the final measurement in the full method. Public technical references also recognize used auto catalysts as a distinct material type. The National Institute of Standards and Technology publishes a reference table for used auto catalysts, showing the importance of clearly defined material in technical work.

How do fire assay and ICP-OES work together?

Fire assay produces a bead, also called a prill. The bead is then dissolved and analysed by ICP-OES to determine the quantities of precious metals that were present in the original sample. The combined use of XRF, fire assay, and ICP-OES is considered one of the most accurate approaches for platinum group metal testing. Metralis uses this sequence for automotive and industrial catalytic converters.

What does each analytical stage show?

Each stage has a clear role, from moisture-related measurement to the final determination of metal quantities. The table shows how processors can read the workflow.

Stage	Purpose	Value for processors
Loss on drying	Measures change through gravimetric drying	Supports a clearer reading of the received sample
Sample preparation	Prepares material for the analytical sequence	Connects the submitted sample with later testing
XRF	Assesses composition and approximate concentration	Provides an early view of the material
Fire assay	Produces a bead or prill	Concentrates the target metals for final measurement
ICP-OES	Analyses the dissolved bead	Determines precise quantities in the original sample

How can results support sorting and pricing decisions?

Results help processors compare lots using measured information rather than visual judgment alone. They can also provide a clearer basis for talks with suppliers, buyers, and refining partners. A report does not set a purchase price by itself. Commercial terms can depend on the agreement between the parties. However, measured platinum, palladium, rhodium, silver, and gold content can help a business explain how it assessed a lot. This is useful for companies asking how to sell catalytic converter material through a business supply chain. The stronger question is not only who will buy it, but also what sample data will support the transaction. Businesses searching for where can I sell catalytic converters often focus first on the buyer. Processors should also check how the material will be sampled, prepared, analysed, and reported. Clear steps reduce uncertainty during commercial review.

How should a processor use laboratory data?

A processor should connect each report to the relevant sample and business lot. The data can then inform internal sorting, supplier talks, and refining strategy.

1. Identify which incoming lot the submitted sample represents.
2. Review loss on drying before comparing results between samples.
3. Use the XRF assessment as preliminary information.
4. Review the fire assay and ICP-OES outcome for final metal quantities.
5. Keep reports linked to internal lot and transaction records.
6. Share relevant findings with trading or refining partners.

When teams ask where to sell catalytic converters, they should consider whether the next party can work with transparent analytical records. That can make technical and commercial discussions easier, especially for mixed international supply chains.

Which metals can Metralis analyse?

For automotive and industrial catalyst samples, Metralis analyses platinum, palladium, and rhodium. An extended scope can also include silver and gold. The exact analytical scope therefore covers Pt, Pd, Rh, Ag, and Au where relevant. This gives processors access to data for the core platinum group metals, with added coverage for silver and gold when included in the work. Metralis is based at Liubčios g. 8, Vilnius, LT-14310, Lithuania, and works internationally. Companies may contact the laboratory at sales@metralis.eu to discuss catalyst sample testing and the required scope.

Summary

Processors need reliable sample information before they can make well-supported sorting, trading, pricing, and refining decisions. Gravimetric drying, XRF, fire assay, and ICP-OES each serve a clear purpose in the workflow. Metralis supports collectors, traders, decanning firms, milling and homogenization facilities, recyclers, and refineries with transparent precious metal analysis. Its internationally oriented laboratory service helps businesses understand catalyst samples through a defined analytical sequence.