Heat source supply system of slag dryer

The utility model relates to a heat source supply system of a slag dryer. The device comprises a cement kiln head air taking pipe, a kiln head hot air baffle, a power generation medium-high temperature air taking pipe, a power generation hot air baffle, a power generation AQC boiler baffle, a main air pipe, an air pipe expansion joint and an air pipe support. The cement kiln head air taking pipe is connected with an original cement kiln head cover; a kiln head hot air baffle is installed at the inlet end, a power generation medium-high temperature air taking pipe is connected with an originalwaste heat power generation AQC air taking pipe, a power generation hot air baffle is installed at the inlet, the cement kiln head air taking pipe and the power generation medium-high temperature airtaking pipe are converged into a main air pipe, and the tail end of the main air pipe is connected with an original slag drying kiln fluidized bed furnace. According to the utility model, another novel heat source is provided