廢為寶”重要的(de)(de)(de)(de)(de)，工(gong)地(di)鋼筋頭廢銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)回(hui)收(shou)價，就是(shi)(shi)(shi)還原后(hou)銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)的(de)(de)(de)(de)(de)純(chun)度，每天還要取樣(yang)來(lai)分(fen)析(xi)其中的(de)(de)(de)(de)(de)氧含(han)量等是(shi)(shi)(shi)否達標。以(yi)前(qian)再生銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)對(dui)廢銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)的(de)(de)(de)(de)(de)要求比較高，需(xu)要按(an)照一定比例搭配原材料(liao)才能實(shi)(shi)施，經(jing)過實(shi)(shi)驗(yan)后(hou)，只(zhi)要是(shi)(shi)(shi)廢銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)就可(ke)(ke)以(yi)進(jin)行再生，技(ji)術上取得了進(jin)步。在以(yi)前(qian)，金(jin)(jin)屬銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)都是(shi)(shi)(shi)從銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)礦石(shi)中提(ti)煉，礦山(shan)開(kai)(kai)采及(ji)冶煉過程容易污染破壞環境。而原料(liao)全部(bu)(bu)使(shi)用(yong)(yong)(yong)廢銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)料(liao)，不含(han)硫(liu)等排(pai)放物，符(fu)合節能、低污染、規模化再生資源回(hui)收(shou)與綜合利用(yong)(yong)(yong)的(de)(de)(de)(de)(de)產業政策方(fang)向(xiang)。廢銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)廢鋁回(hui)收(shou)“廢銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)”也(ye)可(ke)(ke)以(yi)變廢為寶，節能減排(pai)。關于再利用(yong)(yong)(yong)的(de)(de)(de)(de)(de)問題(ti)：因廢銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)包含(han)范圍大，我(wo)們可(ke)(ke)將(jiang)其按(an)回(hui)收(shou)利用(yong)(yong)(yong)的(de)(de)(de)(de)(de)簡(jian)易程度分(fen)類，如：表(biao)面干凈，無雜物黏著(zhu)物為一類；表(biao)面及(ji)內部(bu)(bu)混有(you)雜物為第(di)二類；廢舊無法使(shi)用(yong)(yong)(yong)的(de)(de)(de)(de)(de)純(chun)銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)電器(qi)開(kai)(kai)關、零(ling)件等為第(di)三類等。也(ye)可(ke)(ke)根(gen)據(ju)實(shi)(shi)際情況(kuang)具體(ti)分(fen)類。我(wo)們稱含(han)銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)量高于99%的(de)(de)(de)(de)(de)廢銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)為1號銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)，可(ke)(ke)直(zhi)接融(rong)化和(he)再利用(yong)(yong)(yong)。稱含(han)銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)量低于945%的(de)(de)(de)(de)(de)銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)為2號銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)，必須重新融(rong)化使(shi)用(yong)(yong)(yong)。　在粉(fen)末冶金(jin)(jin)領域，用(yong)(yong)(yong)純(chun)銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)粉(fen)生產電子和(he)導熱零(ling)部(bu)(bu)件。含(han)有(you)錫、鋅、鎳、或者鐵的(de)(de)(de)(de)(de)銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)合金(jin)(jin)被廣泛用(yong)(yong)(yong)于汽車、草地(di)公(gong)園設備、工(gong)具和(he)電子工(gong)業。銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)(tong)粉(fen)使(shi)用(yong)(yong)(yong)在自潤滑軸承上，另外是(shi)(shi)(shi)Fe-Cu預混合，化學工(gong)業領域的(de)(de)(de)(de)(de)滲析(xi)和(he)摩擦材料(liao)部(bu)(bu)件。

對于(yu)變形的(de)窗(chuang)扇，如(ru)果說(shuo)不算(suan)嚴(yan)重的(de)話，可能(neng)(neng)通過加(jia)裝中間鎖來加(jia)以矯正；如(ru)果變形嚴(yan)重到(dao)一定程度(du)了，可能(neng)(neng)就要換(huan)窗(chuang)扇了。順(shun)便提一下(xia)。電(dian)爐(lu)煉鋼逐漸復產，鋼鐵(tie)(tie)(tie)(tie)企業不斷增(zeng)加(jia)廢鋼鐵(tie)(tie)(tie)(tie)的(de)使(shi)用量(liang)，把(ba)多用廢鋼鐵(tie)(tie)(tie)(tie)作(zuo)為節鐵(tie)(tie)(tie)(tie)增(zeng)鋼、節能(neng)(neng)減排(pai)的(de)有力措(cuo)施。使(shi)得(de)廢鋼鐵(tie)(tie)(tie)(tie)進入(ru)大(da)型鋼鐵(tie)(tie)(tie)(tie)企業的(de)比例迅速增(zeng)長達到(dao)85.1%。銅(tong)是人類與有色金屬之間的(de)關系非常(chang)密切，不僅具有良(liang)好的(de)導電(dian)性(xing)、導熱性(xing)、耐腐蝕性(xing)和自然資源豐富(fu)等優良(liang)性(xing)能(neng)(neng)仍然需(xu)要使(shi)用大(da)量(liang)的(de)銅(tong)來將電(dian)能(neng)(neng)轉換(huan)成光能(neng)(neng)并(bing)進入(ru)用戶的(de)線路。

已廣泛應(ying)用于電力、電子、能源(yuan)(yuan)、石化、機(ji)械、冶金、后鋁消費(fei)在中國有(you)色(se)金屬材料。每公(gong)里架空(kong)電線(xian)需要2噸以上的(de)異常銅(tong)線(xian)。一般占綜(zong)合能耗(hao)的(de)60%。也就是說和(he)鐵(tie)礦石相比，用廢(fei)鋼(gang)(gang)直接煉(lian)鋼(gang)(gang)可(ke)(ke)節約能源(yuan)(yuan)60%，其中每多(duo)用1噸廢(fei)鋼(gang)(gang)可(ke)(ke)少用1噸生鐵(tie)，可(ke)(ke)節約0.4噸焦炭或1噸左右的(de)原煤。廢(fei)鋼(gang)(gang)為(wei)輔(fu);短流程一般指電爐煉(lian)鋼(gang)(gang)，原料以廢(fei)鋼(gang)(gang)為(wei)主，生鐵(tie)為(wei)輔(fu)。僅僅改變了進口銅(tong)系(xi)列產品的(de)結構，與提高我國銅(tong)自給水平并(bing)無關系(xi)。