The primary blast furnace burden are coke and ore. The visualization of furnace burden has been an attractive task and a very difficult task due to the furnace being a high temperature, high pressure 'black box'. Owing to the significant difference between coke and ore in permittivity, Electrical capacitance tomography (ECT) can be applied to the furnace burden visualization. Since the furnace burden distribution is quite different from the material distribution imaged by any existing ECT system, the micro-capacitor series-parallel model is used in this paper to analyze the relationship between the capacitance sensor output and the blast furnace burden distribution. The main problem in designing capacitance sensor array is also discussed in this paper.
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