To control the compositional ratio of a mixed raw material corresponding to the compositional fluctuations of respective raw materials within a real time in the subject apparatuses and the subject cement producing equipment.
A raw material supply amt. control apparatus 50 is equipped with a mixed raw material compsn. analyzing device 51 irradiating a mixed raw material which is obtained by grinding and mixing respective raw materials 1-3 from raw material hoppers 12-14 by a raw material mill 15, with laser beam to emit plasma beam from the mixed raw material to spectrally analyze the same to obtain a spectrum and analyzing the compsn. of the mixed raw material from the spectrum, an operation device 52 respectively calculating the supply amts. of the respective raw materials 1-3 so that the compositional ratio of the mixed raw material becomes a predetermined value and a control device 53 controlling the drive motors of the supply conveyors of the raw material hoppers 12-14 so as to adjust the supply amts. of the raw materials 1-3 on the basis of the calculation result of the operation device 52.
ISHIBASHI NAOHIKO
DEGUCHI YOSHIHIRO
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