Abstract：The Voice formula for the permeability of the sinter bed is similar to the “Cobo-Douglas production function” in economics，which are both used to explain the technical relationship between the inputs and outputs. The basic law of “decreasing retune to scale” and the “marginal analysis” method in economics are taken into the analysis of the effects of the bed height and the negative pressure of main drawer on the sinter output in the sinter production. The equal cost curve and equal production curve of the sintering production are made. The theoretical models of the quantitative growth and economic growth，respectively，on the condition of the thick-bed sintering production are obtained. The mechanism of thick-bed sintering production and the expansion path in China are explained at the first time from an economic perspective，and the definition and the determination methods of the sintering production economic zone are proposed. Finally，the development direction of the thick-bed sintering technology is not to improve the single input factor or multiple input factors，but to improve the total factor productivity rate.
2017, Vol. 27 
