选煤厂中矸仓下加热装置的设计与计算

Design and calculation of heating device under middlings bunker and gangue bunker of coal preparation plant

在重介选煤工艺设计中,中煤和矸石通过脱介筛后不再进一步脱水,直接进入中煤仓和矸石仓,这样中矸仓下的扇形闸门处存在一定量积水。在冬季会由于结冰而导致闸门不能正常打开,为生产带来不便。针对此问题提出了简单实用的加热装置设计方案,根据传热学理论对加热装置的散热功率进行计算,从而确定该装置的加热功率。实践证明,加热装置在现场应用取得了良好效果。

In dense-medium separation process, after treated by spraying screen,the middlings and gangue is stored directly in middlings bunker and gangue bunker without dehydration. The consequence is that, there is water at the sector gates of middlings bunker and gangue bunker, the water would freeze in the winter and cause the sector gates fail to open. To resolve this problem, provide a simple and practical heating equipment design method. Calculate the cooling power of the heating device according to the heat transmission theory. The application effects of the heating equipment is great.