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This paper shows that the nonhomog-eneous temperature field of clinkeringzone in a shaft kiln is one of thesubstantial factors affecting the qualityof cement clinker.An isothermal clinker-ing method used in shaft kilns byinserting another heater has beeninvented.The industrial experiments showthat by this means clinkers of goodquality and high economic profits can beobtained with low heat consumption.Thismethod could be adopted easily in thereconstruction of existing shaft kilnsand the designs of new shaft kiln cementplants.
This paper shows that the nonhomog-eneous temperature field of clinkeringzone in a shaft kiln is one of thesubstantial factors affecting the qualityof cement clinker. An isothermal clinker-ing method used in shaft kilns byinserting another heater has been invented. The industrial experiments showthat by this means clinkers of goodquality and high economic profits can beobtained with low heat consumption. Thismethod could be adopted easily in thereconstruction of existing shaft kilnsand the designs of new shaft kiln cementplants.