Process and furnace for homogeneous fusion of vitrifiable material by micro-waves of the oscillating stationary wave type

摘要

A method for microwave melting for the vitrification of material in a body (10) comprising: (a) a lower part constituting a melting hearth (11); (b) an inlet orifice for the materials (17); (c) an outlet orifice for the molten materials (19), placed above the level of the fusion bath; (d) at least one gas outlet orifice (18); and (e) an orifice for the introduction of microwaves (15) for continuously melting the materials by an incidental wave created by a microwave generator (30) and a stationary wave reflected, over the fusion bath (9), by a reflecting surface (21) placed in the body (10) opposite to the microwave generator (30). The microwave is monomodal and the position of the reflecting surface (21) is continuously varied in order to permanently vary the position of the ventral sections of the reflected stationary wave, in order to homogenise the temperature of the whole fusion bath. Also claimed is a furnace using microwaves to vitrify materials by the above method.