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。

它是燃(ran)燒(shao)煤(mei)的發電廠將煤(mei)磨成(cheng)(cheng)100微(wei)米(mi)以下的煤(mei)粉，用預熱空氣噴(pen)入爐膛經燃(ran)燒(shao)形成(cheng)(cheng)懸浮狀態，產生(sheng)混雜有大(da)量(liang)不燃(ran)物(wu)的高溫(wen)煙氣，經集塵裝置捕集就得到(dao)了粉煤(mei)灰(hui)。粉煤(mei)灰(hui)的化學組成(cheng)(cheng)與粘(zhan)土(tu)質相似，主(zhu)要成(cheng)(cheng)分為二氧(yang)化硅(gui)、三(san)氧(yang)化二鋁、三(san)氧(yang)化二鐵、氧(yang)化鈣和未(wei)燃(ran)盡碳。

工作原理(li)

濕粉煤灰由供料(liao)(liao)(liao)(liao)裝置進(jin)(jin)(jin)(jin)(jin)入三層(ceng)(ceng)(ceng)(ceng)滾筒的(de)內層(ceng)(ceng)(ceng)(ceng),實(shi)現(xian)順流烘(hong)干, 粉煤灰在內層(ceng)(ceng)(ceng)(ceng)的(de)抄(chao)板下(xia)(xia)不斷(duan)抄(chao)起、散落(luo)呈(cheng)(cheng)螺旋行(xing)(xing)進(jin)(jin)(jin)(jin)(jin)式實(shi)現(xian)熱(re)交換，物(wu)料(liao)(liao)(liao)(liao)移動至內層(ceng)(ceng)(ceng)(ceng)的(de)另一(yi)端進(jin)(jin)(jin)(jin)(jin)入中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)，進(jin)(jin)(jin)(jin)(jin)行(xing)(xing)逆(ni)流烘(hong)干，物(wu)料(liao)(liao)(liao)(liao)在中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)不斷(duan)地(di)被反復揚(yang)進(jin)(jin)(jin)(jin)(jin)，呈(cheng)(cheng)進(jin)(jin)(jin)(jin)(jin)兩(liang)步退(tui)一(yi)步的(de)行(xing)(xing)進(jin)(jin)(jin)(jin)(jin)方式，物(wu)料(liao)(liao)(liao)(liao)在中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)既充分吸(xi)收內層(ceng)(ceng)(ceng)(ceng)滾筒散發(fa)的(de)熱(re)量，又(you)吸(xi)收中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)滾筒的(de)熱(re)量，同時又(you)延長了干燥(zao)(zao)(zao)時間，物(wu)料(liao)(liao)(liao)(liao)在此(ci)達到(dao)干燥(zao)(zao)(zao)狀態。物(wu)料(liao)(liao)(liao)(liao)行(xing)(xing)至中(zhong)(zhong)層(ceng)(ceng)(ceng)(ceng)另一(yi)端而落(luo)入外層(ceng)(ceng)(ceng)(ceng)，物(wu)料(liao)(liao)(liao)(liao)在外層(ceng)(ceng)(ceng)(ceng)滾筒內呈(cheng)(cheng)矩(ju)形多回路方式行(xing)(xing)進(jin)(jin)(jin)(jin)(jin)，達到(dao)干燥(zao)(zao)(zao)效(xiao)(xiao)果的(de)物(wu)料(liao)(liao)(liao)(liao)在熱(re)風作(zuo)用下(xia)(xia)快速行(xing)(xing)進(jin)(jin)(jin)(jin)(jin)排出滾筒，沒(mei)有達到(dao)干燥(zao)(zao)(zao)效(xiao)(xiao)果的(de)濕物(wu)料(liao)(liao)(liao)(liao)因自重而不能快速行(xing)(xing)進(jin)(jin)(jin)(jin)(jin)，物(wu)料(liao)(liao)(liao)(liao)在此(ci)矩(ju)形抄(chao)板內進(jin)(jin)(jin)(jin)(jin)行(xing)(xing)充分干燥(zao)(zao)(zao)，由此(ci)達到(dao)干燥(zao)(zao)(zao)效(xiao)(xiao)果，完(wan)成干燥(zao)(zao)(zao)過程(cheng)。

設(she)備特點

該設(she)備與其他干燥(zao)(zao)設(she)備相比，生產(chan)(chan)能力(li)大，可連續操(cao)作； 結構簡單，操(cao)作方便；故障少，維修費用(yong)低；適(shi)用(yong)范圍(wei)廣，流(liu)體阻(zu)力(li)小，可以用(yong)它干燥(zao)(zao)顆料(liao)狀物料(liao)，對于那(nei)些(xie)附(fu)著性大的物料(liao)也很有利(li)；操(cao)作彈性大，生產(chan)(chan)上允許產(chan)(chan)品的流(liu)量(liang)有較大波動范圍(wei)，不(bu)會影響產(chan)(chan)品的質(zhi)量(liang)；清掃容(rong)易。