PYRITE ROASTING, AN ALTERNATIVE TO SULPHUR BURNING M Runkel … The Southern African Institute of Mining and Metallurgy Sulphur and Sulphuric Acid Conference 2009 M Runkel and P Sturm … PYRITE ROASTING, AN ALTERNATIVE TO SULPHUR BURNING M Runkel … The Southern African Institute of Mining and Metallurgy Sulphur and Sulphuric Acid Conference 2009 M Runkel and P Sturm …