views:
Increase mill equipment to improve the speed and inclination of the kiln, the material will have to increase the mass flow rate, residence time shorter, because with increasing speed, the number of layers of the active layer material into the increase in unit time per unit time i.e. increased axial displacement of material increases the axial velocity of material, thereby increasing the mass flow of the material, shorter residence time; with increasing kiln inclination, gravity mill equipment increases in the speed component in the axial direction, the axial material movement speed increases, the residence time is shortened, increased material mass flow. With the kiln gauge ignored the increase in height, the material mass flow increases residence time is shortened. Of dam height is increased by 1 mm, the material mass flow rate will increase by 1% to 2%, the residence time is reduced 0.15% ~ O.25%, but the relationship of dam height and the residence time to be further verified. This is because the mounting ring gauge kiln, a residence time of impact has two aspects:
on the one hand the material feed end of the tube stack height increases, increasing the slope of the rotary kiln the material layer, corresponding to the inclination kiln increases, the axial velocity increases material, shorter residence time; on the other hand that the thickness of the material increases, the cross-sectional flow area of \u200b\u200bthe particles to expand, the axial velocity decreases material, prolonged residence time. Extend the residence time of the combined effect of shortening depends on these two aspects. Reducing the kiln for the present experiment conditions tested, with an increase of dam height of the kiln, the material residence time is shortened, illustrate the effect of residence time of the former is larger than the latter. But when these two former significant influence, which is significant when the ball needs to be further in-depth study.
