Danieli & C. Officine Meccaniche S.p.a.

Essge Systemteknik Ab

Nab-Konsult

Staffan Granstrom

Giovanni Coassin

Kjell Bergman

Kenneth Lundstrom

Gensini Gianni

Direct-current smelting furnace with control of deflection of the electric arc, which comprises an upper electrode (13) with relative return-flow lines and a plurality of bottom electrodes (11) positioned on the hearth of the furnace (12) and arranged in two or more assemblies, each assembly having its own controlled supply line connected to its own transformer (16), there being included downstream of each transformer (16) its own thyristor rectifier assembly (17) associated with its own means to control voltage (26), current (24) and firing angle (23), at least the lines supplying the bottom conductors (32) being at least partly screened in the vicinity of the melting furnace (12)

Direct current melting furnace with control of deflection of the

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Method and device for pre-heating waste metal for furnaces

Growing community of inventors

Ojebyn, Sweden

Staffan Granstrom