RECYCLING AND ENVIRONMENTAL ISSUES OF METALLURGICAL SLAGS AND SALT FLUXES 349 ... XIAO, Y., and BOIN, U. Recycling and environmental issues of metallurgical slags and salt fluxes. VII International Conference on Molten Slags Fluxes and Salts, The South African ... elements in the slag and cooling rate. In slow cooling, BF slags precipitate ...