挖(wa)沙(sha)(sha)選(xuan)鐵(tie)船(chuan)由(you)浮(fu)(fu)體(ti)、鏈斗挖(wa)沙(sha)(sha)系(xi)(xi)(xi)統(tong)(tong)(tong)、篩(shai)分系(xi)(xi)(xi)統(tong)(tong)(tong)、磁選(xuan)系(xi)(xi)(xi)統(tong)(tong)(tong)、尾沙(sha)(sha)排除系(xi)(xi)(xi)統(tong)(tong)(tong)、動力系(xi)(xi)(xi)統(tong)(tong)(tong)組成。首先,河(he)道(dao)里有(you)水,我(wo)們(men)的(de)(de)(de)選(xuan)礦設(she)備必須要浮(fu)(fu)在水面上工作,因此我(wo)們(men)用3.5-4毫米(mi)的(de)(de)(de)鋼板做成了浮(fu)(fu)體(ti),根據挖(wa)沙(sha)(sha)深度的(de)(de)(de)不同,浮(fu)(fu)體(ti)的(de)(de)(de)寬度和長度都(dou)有(you)相(xiang)應(ying)的(de)(de)(de)尺寸要求,一(yi)(yi)般(ban)寬度在1.5-2米(mi)之間(jian)(jian)(jian)(jian),長度在16-32米(mi)之間(jian)(jian)(jian)(jian)。另(ling)外,增加船(chuan)的(de)(de)(de)穩定(ding)性,兩個浮(fu)(fu)體(ti)之間(jian)(jian)(jian)(jian)間(jian)(jian)(jian)(jian)隔(ge)了一(yi)(yi)定(ding)的(de)(de)(de)距離(li),一(yi)(yi)般(ban)為1.5米(mi)左右。顧名思義,這套(tao)選(xuan)礦設(she)備的(de)(de)(de)上料系(xi)(xi)(xi)統(tong)(tong)(tong)是鏈斗式的(de)(de)(de)挖(wa)沙(sha)(sha)系(xi)(xi)(xi)統(tong)(tong)(tong),河(he)沙(sha)(sha)由(you)鏈斗提上來以后,因為有(you)大小不一(yi)(yi)的(de)(de)(de)石子(zi),為了保護磁選(xuan)機的(de)(de)(de)安全,必須經(jing)過(guo)篩(shai)分系(xi)(xi)(xi)統(tong)(tong)(tong)。根據河(he)道(dao)的(de)(de)(de)環境不同,一(yi)(yi)般(ban)來說,石子(zi)比(bi)較(jiao)(jiao)少、直徑比(bi)較(jiao)(jiao)小的(de)(de)(de)河(he)道(dao)用自震(zhen)式比(bi)較(jiao)(jiao)好,維修方(fang)便,節省動力(約5KW)。
而石子(zi)很多,直徑(jing)又比較大的河道(dao)就要(yao)(yao)用滾筒(tong)式(shi)的篩子(zi)了。經過(guo)篩分后的石子(zi)一般直接流(liu)入(ru)河道(dao),如(ru)果有(you)經濟(ji)價值也可由傳送(song)帶輸送(song)到(dao)岸上出售;河沙(sha)(sha)轉(zhuan)入(ru)磁(ci)(ci)選(xuan)(xuan)(xuan)系統(tong)(tong)。磁(ci)(ci)選(xuan)(xuan)(xuan)系統(tong)(tong)主要(yao)(yao)是磁(ci)(ci)選(xuan)(xuan)(xuan)機(ji)(ji)(ji)和水洗精選(xuan)(xuan)(xuan)系統(tong)(tong)。磁(ci)(ci)選(xuan)(xuan)(xuan)機(ji)(ji)(ji)的磁(ci)(ci)表強度一般要(yao)(yao)達到(dao)3800-4500高(gao)斯,規格為750*2200-2400,這(zhe)樣(yang)配套才能達到(dao)90%的凈選(xuan)(xuan)(xuan)率。水洗的作(zuo)(zuo)用是提高(gao)毛鐵粉的品(pin)位,一般可在30-45之間自由調節。尾(wei)沙(sha)(sha)排除(chu)系統(tong)(tong)的作(zuo)(zuo)用是將選(xuan)(xuan)(xuan)去(qu)鐵粉的尾(wei)沙(sha)(sha)排到(dao)遠離本(ben)機(ji)(ji)(ji)械的地方,以保證(zheng)本(ben)機(ji)(ji)(ji)械能正常的工作(zuo)(zuo)。一般有(you)自流(liu)式(shi)、傳送(song)帶式(shi)、抽沙(sha)(sha)泵式(shi)三種形(xing)式(shi)當然這(zhe)也是根據河道(dao)的具體環境來定的。
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