Plasma furnace is intended for combustion and decontamination of solid toxic wastes with throughput up to 100 kg/h. It is a vertical cylindrical column (height is ~3 m, internal diameter is ~0.5 m) made of stainless steel. Its internal surface is made of fire brick. Three AC plasma generators with power of 30, 150, 150 kW are mounted on different height. Quencher for cooling of effluent gases is set at the top of the furnace. Temperature-sensitive elements are located in 4 points of the furnace. Data on preliminary tests of substances modeling solid waste combustion are represented. Flue gases samplings were taken for analysis during the experiment.