The main raw material for smelting ferromolybdenum is molybdenite (MoS2). Before smelting, molybdenum concentrate is usually oxidized and roasted in a multi chamber furnace to obtain roasted molybdenum ore with sulfur content less than 0.07%. Molybdenum iron smelting generally adopts the outside furnace method. The furnace is a cylinder placed on a sand foundation, lined with clay bricks, using 75% silicon iron and a small amount of aluminum particles as reducing agents. After the furnace material is added to the furnace barrel once, the upper ignition method is used for smelting. Use initiators (such as saltpeter, aluminum chips, or magnesium chips) on the material surface, ignite and react vigorously, then calm down, release slag, and remove the furnace barrel. Molybdenum iron ingots are first cooled in the sand pit, then sent to the cooling room for flushing and cooling, and finally crushed and finished. The metal recovery rate is 92-99%. In recent years, molybdenum oxide briquettes have been widely used in the steelmaking industry to replace ferromolybdenum.
Molybdenum iron is usually melted by the metal thermal method. Molybdenum iron is a legally inspected commodity. The main producing areas include Jilin, Hebei, Jiangsu, Henan, Liaoning, etc., mainly exported to the United States, the Netherlands, Germany, etc.
