MEANS AND TOOLS USED

Some examples of treated waste :

metal waste from : clippings, cuttings, untitled ingots, and filings after industrial use.
waste in powdery form: collected by sweeping, in mud, on rags, in waste water...
waste from dental surgeries, laboratories, and prosthesis
waste from goldsmiths, silversmiths and jewellers, etc...

METALTECH Ltd. deploys specific processing methods for each category of waste, developing innovative procedures when required.
Processing procedures determining the type of metal (gold, silver, platinum, palladium) present in waste, unfold in six major stages :

the preparation of a batch : calcination by fusion then mixing, enabling us to obtain a phase of absolute of homogeneity of materials. The finished product takes on the shape of ashes, or ingots, according to the type of waste material.
the sample coming from ashes or the ingot must accurately represent the nature of the batch - this is a major condition to ensuring a reliable analysis
analysis procedures : Cupellation is the most current technique in analysis procedures. It allows for the separation of the precious metals and base metals through adduction using lead
atomic absorption: also called spectrometry by absorption. This involves comparing an atom of an alloy with a given standards.
ICP: or spectrometry by emission, a technique demanding high precision when processing more complex alloys.
electrolysis: For gold-plated jewellery and data-processing cards, electrolysis is the adapted solution, making it possible to remove gilt from components, hence recuperating the precious metal.