In a device for melting precrushed material and/or dusts such as, e.g., furnace dusts or steel dusts, marl and lime dust mixtures, shredder light fractions and/or crushed waste substances, in which the material and/or dusts are injected into a combustion chamber along with a carrier gas, the dusts and/or are introduced axially, and the carrier gas is introduced tangentially, into a cyclone 3 . The cyclone 3 is connected with a combustion chamber ( 8 ) via a substantially axially directed discharge opening ( 9 ).
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