CLASSIFICATION DEVICE, STANDING PULVERIZER USING THE CLASSIFICATION DEVICE, AND COAL BURNING BOILER APPARATUS

摘要

The present invention provides a classifying (分級) devices with a mixed ratio of coarse particles to obtain product fine powder little (微粉). In the tilt angle θ, the installation pitch of the fixing pin (13) P, when the particles have as the width of the flow direction L, in the range of 50 ° ≤ θ ≤70 °, the value of P / L 0.042 × (θ -50 ) +0.64 ~ 0.019 × (θ -50), characterized in that the combination a mounting pitch P and the width L of the fixing pin 13 to be within a range of +0.22. ;