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6 results for “granulation technique” in Industry
Industry · 7 August 2026
How Fake Gold Is Detected
…ics usually allow. · Fire assay remains the legal reference method; every non-destructive technique is a proxy calibrated against it. · Does a magnet test prove gold is real? It disproves some fakes and proves nothing. Gold is diamagnetic, so it is not attracted to a magnet, but…
Tomas Herrera · 15 min read
Industry · 2 July 2026
Nine Nines: Inside a Modern Gold Refinery
…tage: fast chlorination to ~99.5%, then electrolysis to 99.99% and above. · Fire assay, a technique older than the periodic table, remains the referee method for purity. · Good Delivery accreditation governs which bars trade without re-assay in the wholesale market. · Provenance…
Tomas Herrera · 12 min read
Industry · 28 July 2026
Urban Mining: The Richest Gold Ore on Earth Is in Your Old Phone
…the metal in acid mixtures in open containers, precipitate the gold, sell it locally. The technique is centuries old in outline. What is new is the feedstock, and the feedstock is full of brominated flame retardants, lead solder, mercury switches and beryllium. · The consequences…
Tomas Herrera · 13 min read
Industry · 7 August 2026
After the Cyanide
Every ounce of mined gold leaves behind roughly a tonne of processed rock and the water that carried it. What happens to that material after the last shift is the part of the industry with the longest…
Tomas Herrera · 17 min read
Industry · 4 August 2026
The Gold Inside Your Phone
Industrial demand is the quietest third of the gold market: a few tenths of a gram per handset, multiplied by billions of devices, chosen not for prestige but because nothing else conducts as reliably…
Tomas Herrera · 15 min read
Industry · 6 August 2026
The Scrap Trade
Roughly a quarter of the world's annual gold supply has been gold before. It arrives as broken chains, single earrings and dental crowns, and it moves through a chain of intermediaries that most selle…
Ingrid Sørensen · 15 min read
