{"id":9756,"date":"2024-05-16T03:09:09","date_gmt":"2024-05-16T03:09:09","guid":{"rendered":"https:\/\/economicherald.net\/?p=9756"},"modified":"2024-05-16T03:09:09","modified_gmt":"2024-05-16T03:09:09","slug":"zincing-outside-the-box-metallurgical-wizardry-boosts-zinc-stash-by-240-at-challengers-hualilan-project","status":"publish","type":"post","link":"https:\/\/economicherald.net\/?p=9756","title":{"rendered":"Zincing outside the box: Metallurgical wizardry boosts zinc stash by 240% at Challenger\u2019s Hualilan project"},"content":{"rendered":"

Zinc recovery from Challenger\u2019s Hualilan project can more than triple to 211,500t
\nMetallurgical testwork shows zinc can be recovered at head grades as low as 0.4%
\nIncorporating more zinc to the resource estimate, plus increased gold and silver recoveries, could add more value to the $1.15bn project<\/p>\n

\u00a0<\/p>\n

Special Report<\/em><\/strong>: Metallurgical testwork on Challenger Gold\u2019s 2.8Moz Hualilan gold project in Argentina has increased recoverable zinc by 240% within the current resource, from 62,000t up to 211,500t.<\/strong><\/p>\n

Zinc prices are on their way up, recently tipping past US$3000\/t after a series of mine closures including Tara, the largest zinc mine in Europe.<\/p>\n

Coupled with lower smelter prices, the shortfall of supply could mean we are seeing the beginnings of a surge in demand for the galvanising metal.<\/p>\n

\u00a0<\/p>\n

More than triple the zinc endowment<\/strong><\/h2>\n

A recent scoping study<\/strong><\/a> has development of Challenger Gold\u2019s (ASX:CEL)<\/strong><\/a> Hualilan\u2019s resource of 2.8Moz for 116,000ozpa gold, 440,000ozpa silver and 9175tpa of zinc raking in >US$1 billion in earnings across seven years.<\/p>\n

That zinc figure is based upon a total 62,000t endowment, which conservatively added US$132m to the overall revenue of US$1.15bn according to the scoping study.<\/p>\n

A metallurgy breakthrough has now more than tripled that figure to 211,500t.<\/p>\n

Metallurgical testwork has shown zinc at head grades as low as 0.4% can be economically recoverable compared with the 1.5% cut-off grade used in the scoping study. The testwork also achieved a higher zinc concentrate grade of 55%, compared to 50% in the scoping study, which will notably enhance zinc payability using a simplified flowsheet with lower reagent consumption \u2013 potentially reducing operating costs.<\/p>\n

Other material opportunities found from the testwork include the inclusion of a heap leach alongside a floatation circuit, to capture value from the low-grade portion of the Hualilan orebody, which was excluded under the low-risk, high-grade, low-tonnage scoping study strategy.<\/p>\n

Other results included:<\/p>\n

Increased gold recovery of 97.5% (94.9% in the scoping study)
\nIncreased silver recovery of 93.0% (90.8% in the scoping study)
\nAnticipated lead recovery of 80-85% (76.8% in the scoping study)
\nSuperior recovery of the Au\/Ag into products with the highest Au\/Ag payability<\/p>\n

The next phase of testwork (evaluating performance at a range of Zn and Au head grades) is underway to allow this pathway to be incorporated into the upcoming Hualilan pre-feasibility study.<\/p>\n

\u201cWe are excited to announce that our latest metallurgical testwork has significantly improved our Hualilan Project,\u201d CEL MD Kris Knauer says.<\/p>\n

\u201cBy unlocking the potential to economically recover zinc at head grades as low as 0.4%, we are now able to access 211.5 kt of zinc within the Hualilan Mineral Resource Estimate.<\/p>\n

\u201cThis is a substantial increase compared to the 62 kt of zinc initially included in the Scoping Study mine plan.<\/p>\n

\u201cThe testwork also achieved a higher zinc concentrate grade of 55%, which will notably enhance zinc payability.<\/p>\n

\u201cAlongside zinc, we have also seen improvements in gold and silver recoveries, reaching 97.5% and 93.0% respectively. The simplified flowsheet reduces reagent consumption, also has the ability to potential lower our operating costs.\u201d<\/p>\n

\u00a0<\/p>\n\n

\ufeff<\/span>\u00a0<\/p>\n

This article was developed in collaboration with Challenger Gold, a Stockhead advertiser at the time of publishing.<\/em><\/p>\n

\u00a0<\/p>\n

This article does not constitute financial product advice. You should consider obtaining independent advice before making any financial decisions.<\/em><\/p>\n

<\/span><\/p>\n

The post Zincing outside the box: Metallurgical wizardry boosts zinc stash by 240% at Challenger\u2019s Hualilan project<\/a> appeared first on Stockhead<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"

Zinc recovery from Challenger\u2019s Hualilan project can more than triple to 211,500t Metallurgical testwork shows zinc can be recovered at head grades as low as [more…]<\/a><\/p>\n","protected":false},"author":0,"featured_media":9757,"comment_status":"","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-9756","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-finance"],"yoast_head":"\nZincing outside the box: Metallurgical wizardry boosts zinc stash by 240% at Challenger\u2019s Hualilan project - Economic Herald<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/economicherald.net\/?p=9756\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Zincing outside the box: Metallurgical wizardry boosts zinc stash by 240% at Challenger\u2019s Hualilan project - 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