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)作原理
石英(ying)砂烘干機是一(yi)種傾斜安裝的回轉式鋼筒體,斜度為3-6%,轉速為5-9r/min。
筒(tong)(tong)(tong)體(ti)(ti)上裝有輪帶(dai)和大齒圈(quan)。筒(tong)(tong)(tong)體(ti)(ti)依(yi)靠輪帶(dai)支撐在托輪上。驅(qu)動(dong)裝置端的(de)(de)輪帶(dai)一側(ce)裝有擋輪,以限制筒(tong)(tong)(tong)體(ti)(ti)沿傾(qing)斜方向(xiang)(xiang)的(de)(de)竄動(dong)。在烘(hong)(hong)干機(ji)(ji)設備底部(bu)溫度(du)(du)達(da)400℃-800℃狀態下,物(wu)(wu)(wu)料(liao)由(you)提升機(ji)(ji)或者皮帶(dai)機(ji)(ji)從(cong)(cong)(cong)喂(wei)料(liao)口喂(wei)入烘(hong)(hong)干機(ji)(ji)筒(tong)(tong)(tong)體(ti)(ti)通(tong)(tong)過大齒圈(quan)在驅(qu)動(dong)裝置作用下回轉,由(you)于筒(tong)(tong)(tong)體(ti)(ti)具有一定的(de)(de)斜度(du)(du)且連(lian)續不(bu)斷地回轉,使得物(wu)(wu)(wu)料(liao)在重力的(de)(de)作用下從(cong)(cong)(cong)高端向(xiang)(xiang)低(di)端移動(dong),在移動(dong)的(de)(de)過程中逐漸與(yu)熱源產生的(de)(de)高溫氣體(ti)(ti)進行(xing)熱交(jiao)換。烘(hong)(hong)干后的(de)(de)物(wu)(wu)(wu)料(liao)從(cong)(cong)(cong)低(di)端卸出(chu),物(wu)(wu)(wu)料(liao)所含水(shui)(shui)份蒸(zheng)發(fa)后被氣流(liu)帶(dai)走,物(wu)(wu)(wu)料(liao)在烘(hong)(hong)干機(ji)(ji)內停留時間約為13-20min,可根(gen)據根(gen)據物(wu)(wu)(wu)料(liao)含水(shui)(shui)率進行(xing)不(bu)同設計(ji)。熱氣體(ti)(ti)由(you)熱風爐生成,在烘(hong)(hong)干機(ji)(ji)內部(bu)物(wu)(wu)(wu)料(liao)相接(jie)觸,通(tong)(tong)過熱傳導,對流(liu),輻射等多種方式將熱量傳遞(di)給物(wu)(wu)(wu)料(liao),從(cong)(cong)(cong)而使物(wu)(wu)(wu)料(liao)溫度(du)(du)不(bu)斷升高,水(shui)(shui)分(fen)不(bu)斷被蒸(zheng)發(fa),符合水(shui)(shui)分(fen)要求的(de)(de)物(wu)(wu)(wu)料(liao)從(cong)(cong)(cong)出(chu)料(liao)端出(chu)料(liao)罩下部(bu)出(chu)口卸料(liao),帶(dai)著水(shui)(shui)蒸(zheng)汽的(de)(de)氣體(ti)(ti)經(jing)除塵器等環(huan)保設施處理后達(da)到環(huan)保要求排放(fang)標的(de)(de)煙氣由(you)引風機(ji)(ji)抽出(chu)經(jing)煙囪排空(kong)。
適用范圍
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。