... 50T with Ladle preheat horizontal devices It comprises an electric trolley, a combustor, an air preheater, a blower, a ladle cover, a ... has wide application to combustion mediums, including various gas fuels (blast-furnace gas, generator gas, mixed gas, converter gas, coke oven ... is reduced.4. It has low baking cost as adopting blast-furnace gas, converter gas and other combustion mediums which are ...