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From mineral processing plants to marine-grade composite plates, StarUSA delivers engineered solutions across industries.
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Frequently Asked Questions
Q:
What primary obstacle prevents the efficient extraction of gold from crushed mobile phone printed circuit boards (PCBs) during ammonium thiosulfate leaching!
The primary obstacle to efficiently extracting gold from crushed mobile phone printed circuit boards (PCBs) using ammonium thiosulfate is the dual and contradictory role of copper, a major component of the PCBs themselves. While copper is a necessary catalyst in the thiosulfate leaching system, its simultaneous dissolution from the PCBs can quickly reach a concentration that transforms it into a powerful inhibitor, primarily by causing the re-deposition of dissolved gold through cementation and the formation of passivation layers that block further reactions.
Q:
Explain the technological shift proposed by Cleveland-Cliffs Steel Corporation at its Middletown Works facility!
Cleveland-Cliffs' proposed technological shift for its Middletown Works facility represents one of the most closely watched—and recently reversed—green steel projects in the United States. In 2024, the steelmaker announced a landmark plan to transform its traditional coal-fired plant into a state-of-the-art, low-emissions facility. However, by mid-2025, the company announced it was pivoting away from this ambitious path, opting instead to refurbish its existing blast furnace to continue operating on fossil fuels for the next two decades.
Q:
What is "Project Vault," and how is it structured to benefit U.S. taxpayers and manufacturers!
Project Vault is a strategic public-private partnership created to establish the U.S. Strategic Critical Minerals Reserve. Announced on February 2, 2026, its goal is to secure America’s supply of critical minerals and protect domestic manufacturers from global supply shocks. Backed by a historic $12 billion in funding, the program is structured to create a net-positive return for taxpayers and provide manufacturers with a safety net against disruptions.
Q:
According to the Department of Energy’s April 2026 announcement, what are the three primary topic areas for the $69 million funding opportunity!
According to a U.S. Department of Energy (DOE) announcement on April 7, 2026, the $69 million funding opportunity is centered on three primary topic areas:
Topic Area 1: Production and material efficiency for critical materials, including rare earth elements (REEs).
Topic Area 2: Processes to refine and alloy gallium, gallium nitride, germanium, and silicon carbide.
Topic Area 3: Cost-competitive direct lithium extraction, separation, and processing.
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From mineral processing plants to marine-grade composite plates, StarUSA delivers engineered solutions across industries.
Tell us about your project – whether you need complete processing machinery, specialty clad plates, or technical consultation.
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