回转烘干机和回转窑构造上有什么区别?还是仅适用温度不同?
推荐回答(3个)
回转窑可以看成是放大版的烘干机,但又不尽相同,回转窑主要是针对建材类物料的生产加工,在其内部进行着物理变化,和化学变化。
烘干机主要针对的是高湿物料,物料经过筒体内部进行的是单纯的物理变化,通过蒸发掉水分来达到干燥的目的!
回转窑和回转烘干机从外观结构来看大致相同,同属与烘干产品。只是在细节设计的构造略有不同,用途也不同。
用途决定结构,先从用途上来区分。回转窑主要是要求温度高,筒体内部镶嵌有耐火砖,一般温度在800-1300℃范围内使用,主要烧制需高温的原料,如水泥厂锻烧水泥熟料,冶金化工窑则主要用于冶金行业钢铁矿磁化焙烧;铬、镍、铁矿氧化焙烧;耐火材料厂焙烧高铝钒土矿和铝厂焙烧熟料、氢氧化铝,化工厂焙烧铬矿砂和铬矿粉等类矿物。石灰窑(即活性石灰窑)用于焙烧钢铁厂、铁合金厂的活性碳和轻烧白去石。在工矿业领域,凡需焙烧的物料,都需回转窑来完成。这是回转窑的主要用途。对于一些物料要求温度高的,一般都用回转窑,其主要是煅烧,改变物料的性质。
从结构上区分:回转烘干机筒体是卧式回转圆筒,其内部从前至后焊有交错排列角度不同的各式抄板。回转窑体内根据需求镶有不同型号耐火砖,在进料端为防止倒料设有门圈及螺旋抄板。
回转窑在其外部装有用于支承的轮带。筒体通过前后轮带支承在托轮装置上,在后托轮装置上设置挡轮以控制筒体的轴向窜动。筒体的转动是由传动装置通过小齿轮带动固定在筒外径齿轮而回转的。
从外形上简单区分:回转窑直径比和长度比一般都超过10以上,而烘干机一般要低于8左右。给人印象就是回转窑很细长,烘干机是粗短。
容积当然是不一样的,回转窑一定是比烘干机大;烘干机用下料斗,而回转窑必须有格筛;煤气的烧嘴,风量的调节也是不一样的
回转烘干机对物料的适应性强,可以烘干各种物料,且设备操作简单可靠,故得到普遍采用。回转窑是指旋转煅烧窑(俗称旋窑),属于建材设备类。回转窑按处理物料不同可分为水泥窑、冶金化工窑和石灰窑。
水泥窑主要用于煅烧水泥熟料,分干法生产水泥窑和湿法生产水泥窑两大类。冶金化工窑则主要用于冶金行业钢铁厂贫铁矿磁化煅烧;铬、镍铁矿氧化煅烧;耐火材料厂煅烧高铝钒土矿和铝厂煅烧熟料、氢氧化铝;化工厂煅烧铬矿砂和铬矿粉等类矿物。石灰窑(即活性石灰窑)用于煅烧钢铁厂、铁合金厂用的活性石灰和轻烧白云石。
回转窑的一般结构。回转窑最重要的组成部分就是筒体,一般回转窑的规格也是按筒体长短及内径大小而规定的。筒体内有耐火砖,以用于物料与筒体的隔热。一般回转窑筒体的中心线与地面的水平线成一定的倾角。筒体的支撑是通过支撑装置来完成的。筒体的进料端有窑尾,出料端有窑头。喷嘴就在窑头的末端。它的作用就是给物料加热,从而使物料充分氧化。筒体的外端有大齿轮,它与小齿轮链接。电机带动小齿轮,小齿轮再带动大齿轮,实现筒体带动物料搅动,使物料充分氧化,达到理想的化学反应。
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