鋼廠專用聚丙烯酰胺使用方法:1、鋼廠(chang)專用聚(ju)(ju)丙烯(xi)(xi)酰胺(an)使用時,配成0.01%濃(nong)度的(de)水(shui)(shui)溶(rong)液,以使用中性不含(han)鹽類雜物的(de)水(shui)(shui)為宜。2、鋼廠(chang)專用聚(ju)(ju)丙烯(xi)(xi)酰胺(an)溶(rong)解時,將陰離子(zi)(zi)聚(ju)(ju)丙烯(xi)(xi)酰胺(an)產(chan)品(pin)(pin)均勻撒入(ru)攪(jiao)拌的(de)水(shui)(shui)中,攪(jiao)速(su)控制(zhi)在100~300rpm。適(shi)當加溫(<60℃),可加速(su)溶(rong)解。3、調整被(bei)處理(li)(li)液的(de)PH值,使陰離子(zi)(zi)聚(ju)(ju)丙烯(xi)(xi)酰胺(an)產(chan)品(pin)(pin)充分(fen)發揮作用(通過試驗選(xuan)擇PH值和陰離子(zi)(zi)聚(ju)(ju)丙烯(xi)(xi)酰胺(an)的(de)用量。)4、加入(ru)產(chan)品(pin)(pin)溶(rong)液時,應加速(su)與被(bei)處理(li)(li)液的(de)混合,出現(xian)絮凝(ning)物后,減(jian)慢攪(jiao)速(su),以利絮凝(ning)物增長和加速(su)沉降。
??注意事項(xiang):1、溶(rong)(rong)(rong)解(jie)(jie)溫(wen)度(du)。溶(rong)(rong)(rong)解(jie)(jie)需要溫(wen)度(du),以加(jia)快溶(rong)(rong)(rong)解(jie)(jie)速度(du)。但溫(wen)度(du)過高,又會使(shi)(shi)高聚物的分(fen)子(zi)鏈斷裂(lie),降低使(shi)(shi)用(yong)效(xiao)果,較(jiao)適宜的溶(rong)(rong)(rong)解(jie)(jie)溫(wen)度(du)為(wei)(wei)50---60℃。2、攪(jiao)拌(ban)(ban)條件。溶(rong)(rong)(rong)解(jie)(jie)應避(bi)(bi)免(mian)過強的剪(jian)切力(li)攪(jiao)拌(ban)(ban),過強的攪(jiao)拌(ban)(ban)會使(shi)(shi)分(fen)子(zi)鏈斷裂(lie),從而降低使(shi)(shi)用(yong)效(xiao)果。攪(jiao)拌(ban)(ban)宜采(cai)(cai)用(yong)低速漿葉,如錨式、框式、多層漿式等。攪(jiao)拌(ban)(ban)速度(du)為(wei)(wei)60轉/分(fen)左(zuo)右。輸送時亦應避(bi)(bi)免(mian)采(cai)(cai)用(yong)高速離心(xin)泵,較(jiao)適宜采(cai)(cai)用(yong)活塞泵或隔(ge)膜(mo)泵。3、均勻分(fen)散(san)(san)投(tou)(tou)料(liao)。聚丙(bing)烯酰胺溶(rong)(rong)(rong)解(jie)(jie)的關(guan)鍵環節,是投(tou)(tou)料(liao)的均勻分(fen)散(san)(san)。開動(dong)攪(jiao)拌(ban)(ban)機(ji)后(hou),采(cai)(cai)用(yong)機(ji)械震(zhen)動(dong)篩(shai)網(wang)投(tou)(tou)料(liao)(篩(shai)網(wang)目(mu)數(shu)為(wei)(wei)10目(mu)),盡(jin)量避(bi)(bi)免(mian)產生“大團塊狀”、“魚(yu)眼狀”難(nan)溶(rong)(rong)(rong)顆粒,從而使(shi)(shi)聚丙(bing)酰胺得到充(chong)分(fen)溶(rong)(rong)(rong)解(jie)(jie),發揮好使(shi)(shi)用(yong)效(xiao)果。4、避(bi)(bi)免(mian)與(yu)鐵接(jie)解(jie)(jie)。在溶(rong)(rong)(rong)解(jie)(jie)攪(jiao)拌(ban)(ban)及輸送投(tou)(tou)加(jia)系統中,采(cai)(cai)用(yong)塑料(liao)、搪瓷、鋁、不銹鋼等材(cai)質。
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