Strong profitability improvements in first year following demerger. Significant portfolio realignment. Vesuvius plc, a global leader in molten metal flow engineering, announces its preliminary audited results for the year ended 31 December 2013, its first full year of independence following the demerger of Cookson Group plc in December 2012. Highlights Revenue of £1,511m, down 2.4%; down 0.8% on an…