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.


NASA Resumes Cygnus XL Cargo Docking with Space Station After Software Fix
Oil Prices Hold Steady as Ukraine Tensions and Fed Cut Expectations Support Market
European Stocks Rise as Markets Await Key U.S. Inflation Data
IMF Deputy Dan Katz Visits China as Key Economic Review Nears
Dollar Slides to Five-Week Low as Asian Stocks Struggle and Markets Bet on Fed Rate Cut
U.S. Futures Steady as Rate-Cut Bets Rise on Soft Labor Data
Trump Signs Executive Order to Boost AI Research in Childhood Cancer
Astronomers have discovered another puzzling interstellar object − this third one is big, bright and fast
Asian Currencies Steady as Rupee Hits Record Low Amid Fed Rate Cut Bets
China Urged to Prioritize Economy Over Territorial Ambitions, Says Taiwan’s President Lai
Neuren Pharmaceuticals Surges on U.S. Patent Win for Rare Disorder Drug
Asia’s IPO Market Set for Strong Growth as China and India Drive Investor Diversification
Is space worth the cost? Accounting experts say its value can’t be found in spreadsheets 



