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Synopsis Literature /Jertaillillg to the belleficiatioll of low-grade chromite ores and the k yrometallurgical treatment of ore fines is reviewed. A description is thell presented of a laborato~v study ill which molten ironchromium allo)'s have been produced b)' reduction of chromite are fines ill all extended arc flash reactor. Low-grade coals have been used as reductallts alld no /Jelleti zillg or briquetting of the charge material is required. The reactants /){lSS through a rotar), prehea ter, fa ll through a columll of hot reducillg gas, thm through a high temperature plasma zone before collectillg ill the hearth where separation occurs betweell the metal and slag phases. Experiments were performed ill which particulate samples were withdrawn from various locatiolls within the columll alld a/so afier passillg through the plasma ZOlle in order to investigate liquefaction, spheroidizatioll , phase separatioll alld reductioll sequellces. The plrysico-chemical pro/Jerties of the slags, slagmetal chemistry , metal quality alld recoveries are reported alld the i1ll/J /ications of this /Jrocess with respect to a lIew stailliess steelmakillg route are outlined.

A New Route to Stainless Steel by the Reduction of Chromite Ore Fines in an Extended Arc Flash Reactor