A kiln for firing basic ceramic articles (BC); the kiln comprises: a conveying device for conveying the basic ceramic articles (BC) along a given path; at least one firing chamber , which is arranged along the given path and has a first input station and a first output station ; and at least one heating device , which is adapted to heat the basic ceramic articles (BC) generating a temperature of at least 900°C, in particular at least 1000°C, in at least one firing area of the firing chamber ; the conveying device is adapted to convey the basic ceramic articles (BC) along a first portion (P1) of the given path from the first input station to the first output station ; the kiln being characterized in that it comprises at least one pre-treatment chamber , which is arranged upstream of the firing chamber along the given path and has a second input station and a second output station ; the conveying device being adapted to convey the basic ceramic articles (BC) comprising organic compounds along a second portion (P3) of the given path from the second input station to the second output station ; the kiln comprising, furthermore, at least one heating assembly , which is adapted to heat the basic ceramic articles (BC) generating a temperature of at least 600°C, in particular at least 800°C, in at least one thermal treatment area of the pre-treatment chamber , in particular so as to cause the organic compounds to at least partly evaporate and at least partially oxidize; at least one extraction assembly to extract gas, in particular the evaporated and at least partially oxidized organic compounds, from the pre-treatment chamber ; and an open area , which is open in respect to the external environment and is arranged along the given path between the pre-treatment chamber and the firing chamber ; the second portion (P3) of the given path extending at least partially though the thermal treatment area ; the conveying device being adapted to convey the basic ceramic articles (BC) along a third portion (P4) of the given path from the second output station to the first input station . the kiln being characterized in that it comprises at least one pre-treatment chamber , which is arranged upstream of the firing chamber along the given path and has a second input station and a second output station ; the conveying device being adapted to convey the basic ceramic articles (BC) comprising organic compounds along a second portion (P3) of the given path from the second input station to the second output station ; the kiln comprising, furthermore, at least one heating assembly , which is adapted to heat the basic ceramic articles (BC) generating a temperature of at least 600°C, in particular at least 800°C, in at least one thermal treatment area of the pre-treatment chamber , in particular so as to cause the organic compounds to at least partly evaporate and at least partially oxidize; at least one extraction assembly to extract gas, in particular the evaporated and at least partially oxidized organic compounds, from the pre-treatment chamber ; and an open area , which is open in respect to the external environment and is arranged along the given path between the pre-treatment chamber and the firing chamber ; the second portion (P3) of the given path extending at least partially though the thermal treatment area ; the conveying device being adapted to convey the basic ceramic articles (BC) along a third portion (P4) of the given path from the second output station to the first input station . <EOS>