Hyundai Steel Co. and Samsung Electronics Co. have developed technology to utilize calcium fluoride (CaF2) from recycled wastewater sludge as supplementary material in steelmaking.
The CaF2 is similar to fluorite, a steelmaking material that lowers melting temperatures and removes impurities in molten iron.
The new technology allows Hyundai Steel, the country’s No. 2 steelmaker, to cut costs while reducing Samsung’s semiconductor waste.
South Korean steelmakers have to entirely import fluorite.
Hyundai Steel imports about 20,000 tons of fluorite annually. With the new recycling technology, Hyundai Steel expects to cut its imports by half as early as the end of October.
Without the technology, Samsung would either throw away wastewater sludge or send it to cement factories for reuse.
The process began last year with a partnership agreement signed by Hyundai Steel and Samsung with local metal recycling firm Pos Ceramics Co. to jointly develop recycling technology for wastewater sludge.
In April of this year, Hyundai Steel was able to produce steel using 30 tons of fluorite alternatives.
The new technology was approved in August by South Korean authorities, including the National Institute of Environmental Research, approved the new technology in August.


Tokyo Inflation Cools in May, Supporting BOJ’s Cautious Rate Hike Path
NASA Artemis II: First Crewed Moon Mission Since Apollo Takes Four Astronauts on 10-Day Lunar Journey
US Imposes Fresh Iran Oil Sanctions Despite Progress on Ceasefire Talks
SpaceX Pivots Toward Moon City as Musk Reframes Long-Term Space Vision
Senate Sets December 8 Vote on Trump’s NASA Nominee Jared Isaacman
Mega IPOs Like SpaceX and OpenAI Could Reshape S&P 500 and Nasdaq 100 Portfolios in 2026
Oil Prices Jump After New U.S. Strikes on Iran Raise Supply Concerns
Oil Prices Set for Sharp Weekly Losses as U.S.-Iran Ceasefire Hopes Ease Supply Concerns
BCA Research Warns Iran and Ukraine Ceasefires May Offer Limited Relief for Global Markets
U.S. Sanctions Iran’s Strait of Hormuz Authority as Global Oil Markets Face Turmoil
Canada and Germany Advance Major LNG Supply Partnership
Trump Administration to Launch Autism Initiatives Targeting Acetaminophen Use and New Treatment Options
Iran-U.S. Nuclear Talks Remain Unresolved as Strait of Hormuz Risks Keep Markets on Edge
New World Screwworm Found Near U.S. Border Raises Threat to Cattle Industry and Beef Prices
Blue Origin New Glenn Rocket Explodes During Launch Pad Test, Delaying Space Ambitions
Tabletop particle accelerator could transform medicine and materials science 



