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(sha)烘(hong)干機是一種傾(qing)斜安(an)裝的(de)回轉(zhuan)式鋼筒(tong)體,斜度為3-6%,轉(zhuan)速為5-9r/min。
筒(tong)(tong)體(ti)上裝有輪帶和大(da)齒圈。筒(tong)(tong)體(ti)依靠輪帶支撐(cheng)在(zai)托輪上。驅(qu)動(dong)裝置端(duan)(duan)的輪帶一側(ce)裝有擋輪,以(yi)限(xian)制筒(tong)(tong)體(ti)沿傾(qing)斜(xie)方向的竄動(dong)。在(zai)烘(hong)干機設(she)備底部(bu)溫(wen)度(du)達400℃-800℃狀(zhuang)態下(xia),物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)由(you)提升(sheng)機或者皮帶機從喂(wei)料(liao)(liao)(liao)口(kou)喂(wei)入烘(hong)干機筒(tong)(tong)體(ti)通過大(da)齒圈在(zai)驅(qu)動(dong)裝置作用下(xia)回轉(zhuan),由(you)于筒(tong)(tong)體(ti)具有一定的斜(xie)度(du)且連續不斷(duan)地回轉(zhuan),使得物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)在(zai)重力(li)的作用下(xia)從高(gao)端(duan)(duan)向低端(duan)(duan)移(yi)動(dong),在(zai)移(yi)動(dong)的過程(cheng)中逐(zhu)漸與熱(re)(re)源產生的高(gao)溫(wen)氣(qi)(qi)體(ti)進行(xing)熱(re)(re)交換。烘(hong)干后的物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)從低端(duan)(duan)卸(xie)出,物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)所含水(shui)份蒸(zheng)發(fa)后被(bei)氣(qi)(qi)流帶走,物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)在(zai)烘(hong)干機內(nei)停留(liu)時間約為(wei)13-20min,可(ke)根據根據物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)含水(shui)率進行(xing)不同(tong)設(she)計。熱(re)(re)氣(qi)(qi)體(ti)由(you)熱(re)(re)風(feng)爐生成,在(zai)烘(hong)干機內(nei)部(bu)物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)相(xiang)接(jie)觸,通過熱(re)(re)傳導,對流,輻(fu)射等(deng)多種方式(shi)將熱(re)(re)量(liang)傳遞給物(wu)(wu)(wu)(wu)料(liao)(liao)(liao),從而使物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)溫(wen)度(du)不斷(duan)升(sheng)高(gao),水(shui)分不斷(duan)被(bei)蒸(zheng)發(fa),符合水(shui)分要求的物(wu)(wu)(wu)(wu)料(liao)(liao)(liao)從出料(liao)(liao)(liao)端(duan)(duan)出料(liao)(liao)(liao)罩下(xia)部(bu)出口(kou)卸(xie)料(liao)(liao)(liao),帶著(zhu)水(shui)蒸(zheng)汽的氣(qi)(qi)體(ti)經除塵器等(deng)環(huan)保設(she)施處理后達到環(huan)保要求排(pai)(pai)放(fang)標的煙氣(qi)(qi)由(you)引(yin)風(feng)機抽出經煙囪排(pai)(pai)空。
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。