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。
工作原理
石英砂烘(hong)干機(ji)是(shi)一種傾斜安裝的回(hui)轉式鋼筒體(ti)(ti),斜度(du)為(wei)3-6%,轉速為(wei)5-9r/min。
筒(tong)(tong)(tong)體(ti)(ti)上裝(zhuang)(zhuang)有(you)(you)輪(lun)帶和(he)大齒圈。筒(tong)(tong)(tong)體(ti)(ti)依靠輪(lun)帶支撐(cheng)在(zai)托輪(lun)上。驅動(dong)(dong)裝(zhuang)(zhuang)置端的輪(lun)帶一(yi)側裝(zhuang)(zhuang)有(you)(you)擋輪(lun),以限制筒(tong)(tong)(tong)體(ti)(ti)沿傾(qing)斜(xie)方向的竄(cuan)動(dong)(dong)。在(zai)烘干(gan)(gan)(gan)機(ji)(ji)設備底部溫(wen)度達400℃-800℃狀態下,物(wu)(wu)(wu)料(liao)(liao)(liao)由提升機(ji)(ji)或者(zhe)皮(pi)帶機(ji)(ji)從(cong)喂(wei)料(liao)(liao)(liao)口喂(wei)入烘干(gan)(gan)(gan)機(ji)(ji)筒(tong)(tong)(tong)體(ti)(ti)通過大齒圈在(zai)驅動(dong)(dong)裝(zhuang)(zhuang)置作用下回(hui)轉,由于筒(tong)(tong)(tong)體(ti)(ti)具有(you)(you)一(yi)定的斜(xie)度且連續(xu)不(bu)斷(duan)地回(hui)轉,使得物(wu)(wu)(wu)料(liao)(liao)(liao)在(zai)重力的作用下從(cong)高端向低端移動(dong)(dong),在(zai)移動(dong)(dong)的過程(cheng)中逐漸與熱(re)(re)源產生的高溫(wen)氣(qi)體(ti)(ti)進行熱(re)(re)交(jiao)換。烘干(gan)(gan)(gan)后的物(wu)(wu)(wu)料(liao)(liao)(liao)從(cong)低端卸(xie)出(chu)(chu),物(wu)(wu)(wu)料(liao)(liao)(liao)所含水份(fen)蒸發后被(bei)氣(qi)流帶走,物(wu)(wu)(wu)料(liao)(liao)(liao)在(zai)烘干(gan)(gan)(gan)機(ji)(ji)內停(ting)留時間約為(wei)13-20min,可根據根據物(wu)(wu)(wu)料(liao)(liao)(liao)含水率進行不(bu)同設計。熱(re)(re)氣(qi)體(ti)(ti)由熱(re)(re)風(feng)爐生成,在(zai)烘干(gan)(gan)(gan)機(ji)(ji)內部物(wu)(wu)(wu)料(liao)(liao)(liao)相接觸,通過熱(re)(re)傳導,對流,輻射(she)等(deng)多種(zhong)方式將熱(re)(re)量傳遞給物(wu)(wu)(wu)料(liao)(liao)(liao),從(cong)而使物(wu)(wu)(wu)料(liao)(liao)(liao)溫(wen)度不(bu)斷(duan)升高,水分(fen)不(bu)斷(duan)被(bei)蒸發,符合水分(fen)要求的物(wu)(wu)(wu)料(liao)(liao)(liao)從(cong)出(chu)(chu)料(liao)(liao)(liao)端出(chu)(chu)料(liao)(liao)(liao)罩下部出(chu)(chu)口卸(xie)料(liao)(liao)(liao),帶著(zhu)水蒸汽的氣(qi)體(ti)(ti)經(jing)除塵器(qi)等(deng)環保(bao)設施(shi)處(chu)理后達到環保(bao)要求排(pai)放標的煙氣(qi)由引風(feng)機(ji)(ji)抽(chou)出(chu)(chu)經(jing)煙囪排(pai)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。