/ Knowledge

CATPRO insights

Technical articles on Brazilian precious-metal residue sourcing, screening, lot validation and due diligence — written for international buyers and operators.

Industry · 6 min

Industrial black powder: dust or platinum?

Black powder routed to licensed disposal as hazardous waste may be carrying platinum, palladium, rhodium or ruthenium. A simple assay before disposal changes the equation.

Market · 7 min

PGM residue opportunities in Brazil

Volume is not the problem. What is missing in Brazil is screening before disposal, technical origination and connection to the right recovery channel.

Industry · 6 min

Spent petrochemical catalysts in Brazil: why screening changes everything

The sale price of spent industrial catalyst rarely reflects the value of the entire lot. It reflects the value of the fraction nobody screened.

Analysis · 7 min

XRF, ICP-MS and fire assay: which technique to use, when

There is no universal technique. XRF is fast triage; ICP-MS is ppb precision; fire assay is destructive reference. Using all of them for everything is waste; using the wrong one is money down the drain.

Market · 6 min

How to validate Brazilian metallic lots before buying

Got a Brazilian metallic lot offer? Before transferring an advance or flying in a team, local validation with documented chain of custody is the move. Reduces risk more than it takes time.

Industry · 5 min

Before disposing of industrial filters, run a screening

Almost every plant has a cabinet or container of saturated filters waiting for disposal. In several cases that material is carrying precious metal — and nobody assayed it.