FACT SHEET Steel industry coproducts
5. Legal Status of Slags, European Slag Association Euroslag, pp. 2, 10, 012006. 6. Energy use in the steel industry report, worldsteel, 2014. 7. Reusing the co-products of the steel industry, BlueScope Steel. The worldwide average recovery rate for slag varies from over 80 for steelmaking slag to nearly 100 for ironmaking slag.