Study on the condensation behavior of magnesium vapor by flow field disturbance under relative vacuum

Abstract

Compared with Pidgeon process, the relative vacuum continuous magnesium smelting process reduces the ratio of material to magnesium by changing raw materials and the direct reduction after calcination of prefabricated pellets, so that the energy consumption per ton of magnesium produced is reduced by 30∼40%, and the carbon emission is reduced by 43∼52%, breaking through the vacuum conditions to achieve continuous production. However, in the process of industrialization, it was found that the magnesium yield in the condenser was low. Therefore, this paper constructs a condenser model of relative vacuum continuous magnesium refining process, and comprehensively analyzes the condensation mechanism of magnesium vapor through simulation and experiment. It is found that the dynamic characteristics of magnesium vapor condensation is an important index to measure its continuity. Under the condition of flowing argon as the protective gas, when the condensation plate spacing is 10 cm, the surface roughness amplitude variance is 2, and the carrier gas flow rate is 20 × 10⁻³ m/s, the magnesium vapor has a better condensation effect, and the condensation efficiency formula is derived.