New Zealand Gold Merchants has been offering competitive refining services for over 35 years, specialising in gold and silver we can recover values from most sources.
Gold sources
alluvial
dentistry
lemels
sweeps
waste plating solutions
medical
scrap jewellery
electronic scrap
Silver sources
dental amalgam
waste silver bearing films
photographic fixer
electrolytic silver recovery
spent plating solutions
silver coinage
sterling silver scrap
silver/silver chloride batteries
silver bearing brazing rod
silver electrical contacts
Metals analysis
The analysis or assay of unknown material that enters the refinery is one of the most important aspects of the whole refinery operation. Our leading edge technology utilising X-Ray fluorescence and atomic absorption spectrophotometry allows us to very quickly and accurately determine the precious values allowing for a rapid response time on many refining jobs.
X-ray Film recycling
The recovery of precious metals is an environmentally challenging one. Emissions to air are often difficult to mitigate. Traditional silver recovery methods for x-ray film and print film would have been done by incinerating the plastic and smelting the resulting ash to recover the silver. This practice was abandoned in the U.S.A. and Europe many years ago as it unnecessarily produced huge quantities of CO2 which is considered a greenhouse gas. In Australasia, NZ Gold Merchants has developed a world class recovery and refining plant to de-silver the film without burning. This state of the art plant was designed and built in New Zealand, after other overseas designs were seen as too expensive to build, or operate. Using only hot water dosed with a small quantity of biodegradable chemicals we can recover 100% of the silver off the plastic, without burning, and have the waste high grade plastic available to be reused in industry. In these times where we are very conscious of our carbon footprint, reduction of greenhouse gasses is beneficial to the whole community.
With advances in our analytical techniques, return times for refining have been significantly improved, allowing payments and metal results to be delivered quickly.
