| 摘要 |
<p>A process for the production of chromium nuggets from chromite ore/concentrate comprises:-oxidizing chromite ore/chromium concentrate (1) comprising a Cr : Fe-ratio ranging from 1.0 to 3.3 in a furnace (2) at a temperature of 900°C,-mixing (7) the oxidized ore (4) with reductant coal (5) and fluxes (lime, silica) (6),-pelletizing (8) the mixture,-reducing the pellets in a rotary furnace (9) at a temperature between 1.400 and 1.600°C,-separating the thus produced chromium nuggets (12) from slag (13) in a separation unit (11).</p> |
