According to raw material and technology process, the thermal engineering equipment for drying and firing process adopts 1 group of small section tunnel dryer & 1 piece of big section tunnel kiln.\n the features of this design is low investment, flexible production, make good use of the waste heat from tunnel kiln, make full use of the tunnel kiln advantage. at the same time, it can reduce the consumption of energy. in addition, the small tunnel dryer and kiln with high heat use efficiency, big capacity, advanced technology, thus enabling the investor to lower their production cost, to improve the product quality and to enhance their economic efficiency.