石英砂烘干機是一種工業設備,應用于肥料、冶金、化工、礦山、電力等行業。
工(gong)作(zuo)原理(li)
石英砂烘(hong)干機是一種(zhong)傾斜安裝的回轉(zhuan)式鋼筒體,斜度為(wei)3-6%,轉(zhuan)速為(wei)5-9r/min。
筒(tong)(tong)(tong)體(ti)上(shang)裝有(you)(you)輪帶(dai)(dai)和(he)大(da)齒圈。筒(tong)(tong)(tong)體(ti)依靠輪帶(dai)(dai)支(zhi)撐在(zai)托輪上(shang)。驅(qu)動裝置(zhi)端(duan)的(de)輪帶(dai)(dai)一(yi)側裝有(you)(you)擋輪,以限制筒(tong)(tong)(tong)體(ti)沿傾斜方(fang)向的(de)竄動。在(zai)烘(hong)干機(ji)設(she)備底部(bu)溫(wen)度(du)達400℃-800℃狀態下,物(wu)(wu)(wu)料(liao)(liao)(liao)(liao)(liao)(liao)由(you)提升(sheng)機(ji)或(huo)者皮帶(dai)(dai)機(ji)從(cong)喂料(liao)(liao)(liao)(liao)(liao)(liao)口喂入烘(hong)干機(ji)筒(tong)(tong)(tong)體(ti)通過(guo)大(da)齒圈在(zai)驅(qu)動裝置(zhi)作(zuo)用(yong)(yong)下回(hui)轉,由(you)于筒(tong)(tong)(tong)體(ti)具有(you)(you)一(yi)定(ding)的(de)斜度(du)且連續不(bu)斷(duan)(duan)地回(hui)轉,使得(de)物(wu)(wu)(wu)料(liao)(liao)(liao)(liao)(liao)(liao)在(zai)重力的(de)作(zuo)用(yong)(yong)下從(cong)高(gao)端(duan)向低(di)端(duan)移(yi)動,在(zai)移(yi)動的(de)過(guo)程中逐漸與熱(re)源產(chan)生的(de)高(gao)溫(wen)氣體(ti)進(jin)行(xing)(xing)熱(re)交換。烘(hong)干后的(de)物(wu)(wu)(wu)料(liao)(liao)(liao)(liao)(liao)(liao)從(cong)低(di)端(duan)卸(xie)出,物(wu)(wu)(wu)料(liao)(liao)(liao)(liao)(liao)(liao)所含水(shui)份蒸(zheng)發(fa)后被氣流帶(dai)(dai)走(zou),物(wu)(wu)(wu)料(liao)(liao)(liao)(liao)(liao)(liao)在(zai)烘(hong)干機(ji)內(nei)停留時間約為(wei)13-20min,可根據根據物(wu)(wu)(wu)料(liao)(liao)(liao)(liao)(liao)(liao)含水(shui)率(lv)進(jin)行(xing)(xing)不(bu)同(tong)設(she)計。熱(re)氣體(ti)由(you)熱(re)風(feng)爐生成,在(zai)烘(hong)干機(ji)內(nei)部(bu)物(wu)(wu)(wu)料(liao)(liao)(liao)(liao)(liao)(liao)相接(jie)觸(chu),通過(guo)熱(re)傳導,對流,輻射等(deng)多(duo)種方(fang)式將熱(re)量傳遞給(gei)物(wu)(wu)(wu)料(liao)(liao)(liao)(liao)(liao)(liao),從(cong)而使物(wu)(wu)(wu)料(liao)(liao)(liao)(liao)(liao)(liao)溫(wen)度(du)不(bu)斷(duan)(duan)升(sheng)高(gao),水(shui)分不(bu)斷(duan)(duan)被蒸(zheng)發(fa),符(fu)合水(shui)分要(yao)求的(de)物(wu)(wu)(wu)料(liao)(liao)(liao)(liao)(liao)(liao)從(cong)出料(liao)(liao)(liao)(liao)(liao)(liao)端(duan)出料(liao)(liao)(liao)(liao)(liao)(liao)罩下部(bu)出口卸(xie)料(liao)(liao)(liao)(liao)(liao)(liao),帶(dai)(dai)著水(shui)蒸(zheng)汽的(de)氣體(ti)經除塵(chen)器等(deng)環(huan)保(bao)設(she)施處理(li)后達到環(huan)保(bao)要(yao)求排放標(biao)的(de)煙氣由(you)引風(feng)機(ji)抽出經煙囪(cong)排空。
適用范圍(wei)
石英砂烘干機在傳統單筒回轉式烘干機結構的基礎上進行了大幅度的突破和創新。從烘干機理上看,物料與熱氣流的交換更加充分。適應粘土、石膏、煤、礦渣、煤矸石、混合料、干混砂漿、黃砂、鐵粉等各種原材料的烘干,也適用于磷肥、復合肥生產中原料及冶金、化工等行業的各種散狀物料的烘干。