Industrial furnaces; industrial melting furnaces; furnaces; furnaces for heat treatment; laboratory ovens; rotary kilns [for industrial purposes]; conveyor oven; muffle furnaces; furnaces featuring electric resistance heating; furnaces featuring electric resistance heating, gas heating and/or oil heating; diffusion furnaces for industrial use; automatic hardening furnaces for components; furnaces for burning, melting, annealing, roasting, sintering, hardening, quenching, tempering, oxidising, homogenising, carbonising, graphiting, calcinating, pyrolysis, pre-heating, drying and heat retaining; furnaces for processing and producing cathode and anode material; stokers for use with industrial furnaces; stokers for use with commercial furnaces; installations for recycling valuable materials and energy from industrial waste and biomass, in particular installations for the pyrolysis, carbonisation or incineration of industrial waste and biomass; polymerisation installations; components and spare parts therefor, equipment and furnaces [heating apparatus], included in class 11.;