Abstract. According to the heat balance of coke oven, the key to energy saving of coking industry was made clear. The technology of flue-gas heat recovery with radial heat pipe was introduced. Then its advancement was described. By giving an example, the application of radial heat pipe in coke-oven proved that the technology obtained obvious economic and social benefits, which also has practical value and popularizing prospect.

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Abstract. At present, the domestic treatments of BFS are water-quenching processes. The existed studies on the centrifugal granulation were focused on slag particle shape, size and mass distribution. Slag temperature during the flight has not been reported. The relations between slag temperature and air temperature, initial temperature, rotary speed and slag diameter were studied. The results can provide reference for the design of sensible heat recovery device.