Quality and production of sinter is essential for an appropriate operation of the blast furnace. A model for the prediction of the burn through point in sintering process is developed in order to improve the stability of the process. Speed strand, air flow through the bed, raw material rates and real thermocouples temperatures are considered as input variables. The sinter bed is split into portions and a set of differential equations (mass and heat balances) are established in order to obtain a good estimation of the gas temperature at the wind boxes. These temperatures are compared with the actual measurements and entered into the model to achieve a typical modern filtered scheme.