Molybdenum ore beneficiation to improve recovery rate process

Molybdenum is a rare and precious metals, in the production of molybdenum iron, molybdenum total cost of 97.5%. Therefore, maximizing the recovery rate of molybdenum is very important to reduce costs and improve economic efficiency. Strict control of the links that may cause molybdenum loss must be seized.

(1) MoO3(s) has a high vapor pressure and is easy to sublimate. Therefore, reducing the sublimation of MoO3(s) and recovering molybdenum-containing dust are important steps that must be taken care of.

(2) In the roasting of molybdenum concentrate, the roasting temperature should be accurately controlled, the sublimation amount of MoO3(s) should be minimized, and the high-efficiency purification system should be used to re-calcinate the recovered molybdenum dust.

(3) In the smelting, the sealed furnace body can not only reduce the heat loss, reduce the amount of the reducing agent aluminum , but also reduce the amount of molybdenum loss in the slag, and also facilitate the purification and dust removal of the flue gas. The molybdenum-containing dust collected by the dust collector can be returned to the smelting after being agglomerated. If the dust contains other metal elements, the comprehensive utilization of dust should be considered.

(4) The ferromolybdenum particles contained in the ferromolybdenum slag must be recovered, and the slag crushing can be recovered by magnetic separation.

(5) Finishing chips and furnace bottom iron are the largest amount of molybdenum-containing return materials, which should be re-smelted with cooked molybdenum ore. Molybdenum Properties Molybdenum is a silver- white refractory metal with a melting point of 2615 ° C, a density of 10.2 g / cm 3 , a small expansion coefficient, almost the same as the expansion coefficient of the special glass of the tube.

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