| 摘要 |
<p>A method is disclosed for preparing and recovering metal nitrides from their ferrometal alloys and nickel metal alloys. Exemplary steps of the process involve niobium nitride prepared from ferroniobium alloys which are first hydrided to provide a friable comminutable product. The hydrided alloy is then charged through feed hopper (2) to the reactor (9). The ferroniobium hydride is then nitrided as a nitrogen containing gas is introduced to reaction vessel (9) through inlet (4). The pressure conditions of the reaction vessel (9) are controlled by conduit (21) in communication with pressure vent (20) and inlet (15) which optionally provides for an overpressure of inert gas such as helium. The conditions of the nitriding step are controlled to form distinct phases of iron nitride and niobium nitride respectively.</p> |
