根据烘干粉煤灰的性质和具体条件。设计适宜的扬料装置并确定合适的形状和布局，能确保机内物料和热空气热交换效果******：对具体、特定的粉煤灰烘干作业系统，能在确保有效烘干时间的同时，为提高烘干机的通过能力创造条件。目前．国内大多数粉煤灰烘干机内部扬料装置均为普通弧形扬料板。这种扬料板结构简单，对物料的适应性强。，但是，扬料的分散度低，均匀性差，不能形成理想的料幕。另外，也有采用部分格子式扬料板的。这种扬料板能使扬料部分较均匀，但扬料板受热易变形。焊缝开裂，而且不容易清理维护，特别不适用烘干黏性较大的物料。新型粉煤灰专用组合式扬料板。扬料角度大，物料抛洒性好．且可根据物料在烘干机内不同的烘干区域，结合生产实际进行。采用新刑组合扬料板并通过合理涮节物料在烘干机内的停留时间，能实现物料在烘干机内的加速烘干、等速烘于和降速烘干等阶段，大幅度增加水分蒸发速度和强度，有利于提高烘干机产量。在烘干机中间加装了中心x型扬料板，进入烘干机的物料首先南周向扬料板带到一定高度，然后抛落扬料。抛落后的物料进人中部X型扬料板内，物料从上层X型扬料板再次抛落到下层X型扬料板．从而形成层层抛落物料，物料在烘干截面内呈雨状料幕．避免了烘干机内热空洞的存在。起到了导向、均流和阻料作用。由于物料在x型扬料板内不断抛落．延长了物料在x型扬料板内的停留时间，增大了物料与热空气交换的机会。从而提高了烘干机内热交换效率；同时，由于物料在x扬料板内反复抛落．起到了一定的破碎作用，烘干效果大大提高。特别是中心X型扬料板有类似于磨机隔仓板的作用，具有控制烘干机内粉煤灰流速．平衡机内风速的突出优点，是新型高产节能粉煤灰烘干机技术的一大亮点。
    According to the drying properties of fly ash and concrete conditions. Design suitable feed device and determine suitable shape and the layout, to ensure that materials and hot air heat exchange inside machine works best: for concrete, specific fly ash drying operation system, can at the same time of ensuring effective drying time, through the ability to create conditions for improving the dryer. Most of the fly ash dryer. Domestic internal feed device are ordinary arc feed plate. The feed plate has simple structure, strong adaptability of materials. , but the feed low dispersion, uniformity is poor, cannot form the ideal material. In addition, also have the partial lattice type feed plate. The feed plate can make the feed part is relatively uniform, but feed plate heat deformation. Welding crack, and not easy cleaning maintenance, not apply to special drying viscous larger materials. New type of special combination of fly ash feed plate. Feed Angle is big, good material spilled. And according to the different material in the dryer's drying area, combined with