電鋅冶煉是一種常見的冶煉工藝,主要用于回收廢舊電池和廢鉛蓄電池中的金屬,其中鋅是最主要的產品。在電鋅冶煉的過程中,物料的計量和控制是重中之重,因此物位計的選擇需要極為慎重,市面上的有多種優質的工業測量儀表,例如雷達物位計、射頻導納物(wu)位開(kai)關、伺服式物(wu)位計等(deng),誰(shui)更適(shi)合電鋅冶煉(lian)工(gong)藝(yi)呢?本文探討電鋅工(gong)藝(yi)中(zhong)的儀表(biao)選型(xing)問題!
(圖源網絡)
電鋅鑄造過程中儲罐較多,體積大,工況復雜,需要高精度的量具,以往有浮動鋼帶式、伺服式、靜壓式、電容式和超聲波測量儀器等。但是,無論是浮球鋼帶式、伺服式還是靜壓表,都不是測量罐內液位的最佳方式。浮子鋼帶式液位計安裝復雜(za),可靠性低;靜壓(ya)液(ye)位(wei)計受(shou)介質密(mi)度(du)和溫度(du)的影響很(hen)大;這類液(ye)位(wei)計精度(du)高,但(dan)由于是機械傳動,難免(mian)會出現磨(mo)損問(wen)題。
電容式液位計是利用兩個電極之間的電容,隨被測介質的液位而變化,它是一種由原理組成的液位測量儀表,但其測量的前提是介質的介電常數必須保持不(bu)(bu)變(bian),否(fou)則(ze)測量(liang)(liang)將不(bu)(bu)準確。但是電(dian)解鋅生產過程(cheng)中介質(zhi)的成(cheng)分不(bu)(bu)是很確定,由于介質(zhi)中存在(zai)(zai)各種雜(za)質(zhi),探頭(tou)使用(yong)后會在(zai)(zai)探頭(tou)外壁產生結垢,而且結垢不(bu)(bu)均勻(yun)。超(chao)聲波液(ye)位計可用(yong)于定點和(he)連續測量(liang)(liang),適應(ying)性強,場(chang)合要(yao)求(qiu)不(bu)(bu)嚴,不(bu)(bu)需要(yao)移動,傳播速度(du)與(yu)介電(dian)常數、導電(dian)率、導熱率無直接關(guan)系,耐用(yong)且易(yi)于使用(yong)和(he)安裝。缺(que)點是不(bu)(bu)能測量(liang)(liang)有氣泡(pao)和(he)懸浮物的液(ye)位,不(bu)(bu)宜在(zai)(zai)液(ye)位變(bian)化較(jiao)大時測量(liang)(liang),造成(cheng)測量(liang)(liang)誤(wu)差。
最終(zhong)經(jing)過實(shi)際(ji)使(shi)用(yong)發(fa)現,雷達(da)(da)物(wu)(wu)(wu)(wu)(wu)位計(ji)(ji)最適合(he)在電(dian)鋅(xin)冶煉工藝中(zhong)(zhong)應用(yong)。首先在電(dian)鋅(xin)冶煉的過程中(zhong)(zhong),需(xu)要將廢(fei)(fei)舊(jiu)電(dian)池或廢(fei)(fei)鉛蓄(xu)電(dian)池中(zhong)(zhong)的電(dian)解(jie)(jie)液和電(dian)極(ji)分離出來(lai),然后(hou)對廢(fei)(fei)舊(jiu)電(dian)池或廢(fei)(fei)鉛蓄(xu)電(dian)池進行破(po)碎,最終(zhong)得到固體物(wu)(wu)(wu)(wu)(wu)料(liao)(liao)。這些固體物(wu)(wu)(wu)(wu)(wu)料(liao)(liao)需(xu)要按(an)照(zhao)一定比(bi)例加(jia)入到電(dian)解(jie)(jie)槽中(zhong)(zhong)進行冶煉。而(er)雷達(da)(da)物(wu)(wu)(wu)(wu)(wu)位計(ji)(ji)可以實(shi)現對固體物(wu)(wu)(wu)(wu)(wu)料(liao)(liao)的高(gao)精(jing)度(du)測量,以確(que)保(bao)每次加(jia)入的固體物(wu)(wu)(wu)(wu)(wu)料(liao)(liao)的比(bi)例準(zhun)確(que)無(wu)誤(wu)。并(bing)且固體物(wu)(wu)(wu)(wu)(wu)料(liao)(liao)可能會堵塞輸送(song)管道或料(liao)(liao)倉,從而(er)影響冶煉過程的穩定性(xing)。而(er)雷達(da)(da)物(wu)(wu)(wu)(wu)(wu)位計(ji)(ji)可以實(shi)現對物(wu)(wu)(wu)(wu)(wu)料(liao)(liao)的高(gao)精(jing)度(du)測量,及時(shi)發(fa)現物(wu)(wu)(wu)(wu)(wu)料(liao)(liao)堵塞的情況,并(bing)采取相應的措(cuo)施(shi),以防止物(wu)(wu)(wu)(wu)(wu)料(liao)(liao)堵塞。
其(qi)次在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)鋅冶煉(lian)的(de)(de)(de)過(guo)程中,需要將廢(fei)舊電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)或廢(fei)鉛蓄電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)中的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)解(jie)(jie)液(ye)(ye)(ye)分離出來,然(ran)后加入(ru)到電(dian)(dian)(dian)(dian)(dian)(dian)解(jie)(jie)槽(cao)中進(jin)行冶煉(lian)。而雷(lei)達物(wu)位(wei)(wei)計(ji)也可以(yi)實(shi)現(xian)對(dui)液(ye)(ye)(ye)體物(wu)料的(de)(de)(de)高精(jing)度測量,以(yi)確(que)保每次加入(ru)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)解(jie)(jie)液(ye)(ye)(ye)的(de)(de)(de)比例準確(que)無誤。并且在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)鋅冶煉(lian)的(de)(de)(de)過(guo)程中,需要對(dui)電(dian)(dian)(dian)(dian)(dian)(dian)解(jie)(jie)槽(cao)中的(de)(de)(de)液(ye)(ye)(ye)位(wei)(wei)進(jin)行控制,以(yi)確(que)保電(dian)(dian)(dian)(dian)(dian)(dian)解(jie)(jie)槽(cao)中的(de)(de)(de)液(ye)(ye)(ye)位(wei)(wei)在(zai)一(yi)定(ding)的(de)(de)(de)范圍內。而雷(lei)達物(wu)位(wei)(wei)計(ji)可以(yi)實(shi)現(xian)對(dui)電(dian)(dian)(dian)(dian)(dian)(dian)解(jie)(jie)槽(cao)中液(ye)(ye)(ye)位(wei)(wei)的(de)(de)(de)實(shi)時監(jian)測和控制,以(yi)確(que)保電(dian)(dian)(dian)(dian)(dian)(dian)解(jie)(jie)槽(cao)中的(de)(de)(de)液(ye)(ye)(ye)位(wei)(wei)穩定(ding)。
總之,雷達物(wu)位(wei)計在電(dian)鋅冶煉(lian)工藝中具有(you)重要的應用價值(zhi),對比其它(ta)儀表(biao)雷達物(wu)位(wei)計更可以(yi)通過(guo)對物(wu)料高(gao)度的精確測量和(he)(he)液位(wei)的控制,來(lai)保證電(dian)鋅冶煉(lian)過(guo)程的穩定性和(he)(he)生產(chan)效率(lv)。
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