粉煤灰烘干機是煤粉經高溫燃燒后形成的一種似火山灰質混合材料。

它(ta)是燃(ran)燒煤的(de)發電(dian)廠將煤磨成(cheng)100微米以下的(de)煤粉，用(yong)預(yu)熱空氣噴入爐膛經燃(ran)燒形成(cheng)懸(xuan)浮狀態，產生混雜有大量不(bu)燃(ran)物的(de)高溫(wen)煙(yan)氣，經集塵裝置(zhi)捕集就得到了粉煤灰。粉煤灰的(de)化(hua)學組成(cheng)與(yu)粘土質相似，主要成(cheng)分為(wei)二氧化(hua)硅、三氧化(hua)二鋁、三氧化(hua)二鐵、氧化(hua)鈣和未燃(ran)盡碳。

工作原理(li)

濕粉煤(mei)灰(hui)(hui)由(you)供料(liao)(liao)(liao)(liao)裝置進(jin)(jin)(jin)入(ru)三層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)滾筒的(de)(de)內層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng),實(shi)現順流(liu)烘干(gan), 粉煤(mei)灰(hui)(hui)在內層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)的(de)(de)抄板(ban)下不(bu)(bu)斷抄起、散落呈(cheng)螺旋(xuan)行(xing)(xing)進(jin)(jin)(jin)式實(shi)現熱(re)交換，物(wu)(wu)料(liao)(liao)(liao)(liao)移動至內層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)的(de)(de)另一(yi)端進(jin)(jin)(jin)入(ru)中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)，進(jin)(jin)(jin)行(xing)(xing)逆流(liu)烘干(gan)，物(wu)(wu)料(liao)(liao)(liao)(liao)在中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)不(bu)(bu)斷地被反(fan)復揚進(jin)(jin)(jin)，呈(cheng)進(jin)(jin)(jin)兩(liang)步退一(yi)步的(de)(de)行(xing)(xing)進(jin)(jin)(jin)方(fang)式，物(wu)(wu)料(liao)(liao)(liao)(liao)在中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)既充分吸(xi)收內層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)滾筒散發的(de)(de)熱(re)量，又(you)吸(xi)收中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)滾筒的(de)(de)熱(re)量，同時又(you)延長(chang)了干(gan)燥(zao)時間，物(wu)(wu)料(liao)(liao)(liao)(liao)在此達到干(gan)燥(zao)狀態。物(wu)(wu)料(liao)(liao)(liao)(liao)行(xing)(xing)至中(zhong)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)另一(yi)端而落入(ru)外層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)，物(wu)(wu)料(liao)(liao)(liao)(liao)在外層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)滾筒內呈(cheng)矩形(xing)多(duo)回路(lu)方(fang)式行(xing)(xing)進(jin)(jin)(jin)，達到干(gan)燥(zao)效果的(de)(de)物(wu)(wu)料(liao)(liao)(liao)(liao)在熱(re)風作用下快(kuai)速行(xing)(xing)進(jin)(jin)(jin)排出滾筒，沒(mei)有達到干(gan)燥(zao)效果的(de)(de)濕物(wu)(wu)料(liao)(liao)(liao)(liao)因自重而不(bu)(bu)能快(kuai)速行(xing)(xing)進(jin)(jin)(jin)，物(wu)(wu)料(liao)(liao)(liao)(liao)在此矩形(xing)抄板(ban)內進(jin)(jin)(jin)行(xing)(xing)充分干(gan)燥(zao)，由(you)此達到干(gan)燥(zao)效果，完成干(gan)燥(zao)過程。

設備特點

該設(she)備與其他(ta)干(gan)(gan)燥設(she)備相比(bi)，生產能力(li)大，可連續操作(zuo)； 結(jie)構簡單，操作(zuo)方便(bian)；故障(zhang)少(shao)，維修費(fei)用低；適用范(fan)圍廣，流(liu)體阻力(li)小(xiao)，可以用它(ta)干(gan)(gan)燥顆料狀物料，對于那些附著性(xing)大的(de)物料也很有利；操作(zuo)彈性(xing)大，生產上允許產品(pin)的(de)流(liu)量有較大波動范(fan)圍，不會影(ying)響產品(pin)的(de)質量；清掃容易。