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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 …