31-08-2011 дата публикации
Номер: CN0102168191A
Принадлежит:
The invention relates to the technical field of ferrous metallurgy, and relates to a vanadium-nitrogen alloy preparation method for preventing the fired alloy from being adhered and oxidized. The method comprises the following steps of: (1) mixing a vanadium-containing compound, an adhesive and a premixing carbon reducing agent, pressing into raw material balls, and naturally drying the raw material balls; and (2) mixing the raw material balls and a granular carbon reducing agent, continuously throwing into a shaft kiln of a medium-frequency induction furnace, aerating high-purity nitrogen, and charging and discharging once every 6 to 8 hours, wherein the step is divided into three stages, namely carbonization and nitridation, and cooling. In the method, the granular carbon reducing agent is added during the charging so as to ensure that the raw material balls are partitioned by using the granular carbon reducing agent, so that the heat transfer is improved to make the temperature increase ...
Подробнее