在(zai)粉末冶金(jin)領域，用(yong)(yong)(yong)純銅(tong)(tong)(tong)(tong)粉生產電子和(he)導(dao)熱零部件。含有(you)錫、鋅、鎳、或(huo)者鐵的(de)(de)(de)銅(tong)(tong)(tong)(tong)合(he)金(jin)被(bei)廣(guang)泛用(yong)(yong)(yong)于(yu)(yu)(yu)(yu)汽(qi)(qi)車、草(cao)地公園設(she)備、工具和(he)電子工業。銅(tong)(tong)(tong)(tong)粉使用(yong)(yong)(yong)在(zai)自潤滑軸承上(shang)，另外是Fe-Cu預(yu)混合(he)，化(hua)學工業領域的(de)(de)(de)滲析(xi)和(he)摩擦材料部件。關于(yu)(yu)(yu)(yu)再(zai)利用(yong)(yong)(yong)的(de)(de)(de)問(wen)題：因(yin)廢銅(tong)(tong)(tong)(tong)包含范圍大，我(wo)們(men)可(ke)將(jiang)其(qi)按回收(shou)利用(yong)(yong)(yong)的(de)(de)(de)簡易程度分類(lei)，如(ru)：表(biao)面(mian)(mian)干凈，無雜(za)物(wu)(wu)(wu)黏著物(wu)(wu)(wu)為(wei)(wei)(wei)一類(lei)；表(biao)面(mian)(mian)及內(nei)部混有(you)雜(za)物(wu)(wu)(wu)為(wei)(wei)(wei)第二類(lei)；廢舊無法使用(yong)(yong)(yong)的(de)(de)(de)純銅(tong)(tong)(tong)(tong)電器開(kai)關、零件等(deng)為(wei)(wei)(wei)第三類(lei)等(deng)。也可(ke)根據實際情況具體分類(lei)。我(wo)們(men)稱(cheng)含銅(tong)(tong)(tong)(tong)量高于(yu)(yu)(yu)(yu)99%的(de)(de)(de)廢銅(tong)(tong)(tong)(tong)為(wei)(wei)(wei)1號(hao)銅(tong)(tong)(tong)(tong)，可(ke)直接融化(hua)和(he)再(zai)利用(yong)(yong)(yong)。稱(cheng)含銅(tong)(tong)(tong)(tong)量低于(yu)(yu)(yu)(yu)945%的(de)(de)(de)銅(tong)(tong)(tong)(tong)為(wei)(wei)(wei)2號(hao)銅(tong)(tong)(tong)(tong)，必須重新融化(hua)使用(yong)(yong)(yong)。對(dui)于(yu)(yu)(yu)(yu)廢鋁(lv)(lv)制品，須進行(xing)拆解，去除與鋁(lv)(lv)料連接的(de)(de)(de)鋼鐵及其(qi)他有(you)色金(jin)屬件，再(zai)經清洗(xi)、破碎、磁選、烘干等(deng)工序制成廢鋁(lv)(lv)料。對(dui)于(yu)(yu)(yu)(yu)輕薄松散的(de)(de)(de)片狀廢舊鋁(lv)(lv)件，如(ru)汽(qi)(qi)車上(shang)的(de)(de)(de)鎖緊臂、速度齒輪軸套以及鋁(lv)(lv)屑(xie)等(deng)，要用(yong)(yong)(yong)液壓金(jin)屬打包機(ji)打壓成包。對(dui)于(yu)(yu)(yu)(yu)鋼芯(xin)鋁(lv)(lv)絞線(xian)，應先(xian)分離鋼芯(xin)，然后將(jiang)鋁(lv)(lv)線(xian)繞(rao)成卷。

對于變(bian)形的窗扇，如果說不算嚴(yan)重的話，可(ke)(ke)能通過加(jia)裝(zhuang)中間(jian)鎖來加(jia)以矯正；如果變(bian)形嚴(yan)重到一(yi)定程度(du)了，可(ke)(ke)能就要換(huan)窗扇了。順便提(ti)一(yi)下(xia)。銅(tong)是我(wo)國長期短缺的金屬，不存在(zai)過剩問題，建設銅(tong)冶煉能力還能充分(fen)利用國外礦產資源(yuan)，哪里有廢(fei)(fei)鋁回收的，因此不應限制(zhi)上(shang)銅(tong)冶煉項目。我(wo)認為這種觀點是片面的。廢(fei)(fei)鋼回收利用實現新突(tu)破煉鋼從工序(xu)的角度(du)分(fen)為'長流程'和'短流程'：長流程一(yi)般指轉爐煉鋼，原(yuan)料(liao)以鐵礦石(shi)(生鐵)為主(zhu)，。

 　　銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)易與(yu)(yu)其它元素形(xing)(xing)(xing)成(cheng)合(he)(he)金(jin)(jin)，大量用(yong)來(lai)(lai)制造(zao)異型的(de)(de)(de)(de)(de)鍛件、鑄造(zao)件和粉(fen)末冶金(jin)(jin)產(chan)品。銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)與(yu)(yu)鎳(nie)形(xing)(xing)(xing)成(cheng)合(he)(he)金(jin)(jin)具有抗海水(shui)腐(fu)(fu)蝕的(de)(de)(de)(de)(de)優良性能(neng)。錫(xi)可(ke)以(yi)提高(gao)固溶體中(zhong)銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)的(de)(de)(de)(de)(de)強(qiang)(qiang)度(du)和抗腐(fu)(fu)蝕性能(neng)。鋅和銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)合(he)(he)金(jin)(jin)，即(ji)黃銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)粉(fen)，被用(yong)于(yu)(yu)水(shui)管(guan)(guan)、鎖(suo)(suo)件、閥門、管(guan)(guan)件。含(han)有鎳(nie)、錫(xi)、鈦、鈹及(ji)鈷(gu)的(de)(de)(de)(de)(de)銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)合(he)(he)金(jin)(jin)強(qiang)(qiang)度(du)相當于(yu)(yu)高(gao)強(qiang)(qiang)度(du)鋼，而且具有高(gao)的(de)(de)(de)(de)(de)導(dao)電(dian)率和導(dao)熱性能(neng)。銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)及(ji)銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)鋅鋁(lv)合(he)(he)金(jin)(jin)常(chang)被用(yong)于(yu)(yu)生(sheng)(sheng)產(chan)片(pian)狀的(de)(de)(de)(de)(de)金(jin)(jin)粉(fen)。通(tong)過調(diao)整錫(xi)鎳(nie)成(cheng)分(fen)，可(ke)以(yi)生(sheng)(sheng)成(cheng)特定(ding)的(de)(de)(de)(de)(de)顏色。黃銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)具有較(jiao)強(qiang)(qiang)的(de)(de)(de)(de)(de)耐磨性硬度(du)又(you)比(bi)紫銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)高(gao)，所以(yi)通(tong)常(chang)用(yong)于(yu)(yu)制造(zao)閥門、水(shui)管(guan)(guan)、空調(diao)內外機(ji)連接(jie)管(guan)(guan)、散熱器和鎖(suo)(suo)具等或工廠(chang)企業(ye)產(chan)生(sheng)(sheng)的(de)(de)(de)(de)(de)廢(fei)黃銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)邊(bian)角料(liao)、機(ji)加(jia)工碎屑為(wei)主(zhu)。廢(fei)銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)供應中(zhong)還有一類(lei)問(wen)題就是(shi)舊(jiu)廢(fei)銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)，主(zhu)要是(shi)在使用(yong)時間之后(hou)被丟棄的(de)(de)(de)(de)(de)銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)資(zi)源，通(tong)常(chang)我(wo)們會(hui)被進(jin)行回收商回收處理(li)(li)之后(hou)，集中(zhong)發展(zhan)起來(lai)(lai)賣給造(zao)銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)企業(ye)。回收商通(tong)常(chang)從廢(fei)舊(jiu)建筑物(wu)設計以(yi)及(ji)中(zhong)國交通(tong)管(guan)(guan)理(li)(li)工具中(zhong)拆(chai)卸廢(fei)銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)，銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)資(zi)源是(shi)包著，一般這種(zhong)情況分(fen)析都可(ke)以(yi)被回收再生(sheng)(sheng)。通(tong)常(chang)，三分(fen)之一的(de)(de)(de)(de)(de)廢(fei)銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)是(shi)以(yi)精(jing)煉銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)的(de)(de)(de)(de)(de)形(xing)(xing)(xing)式(shi)形(xing)(xing)(xing)成(cheng)的(de)(de)(de)(de)(de)，三分(fen)之二的(de)(de)(de)(de)(de)廢(fei)銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)是(shi)以(yi)銅(tong)(tong)(tong)(tong)(tong)(tong)(tong)合(he)(he)金(jin)(jin)的(de)(de)(de)(de)(de)形(xing)(xing)(xing)式(shi)重復利用(yong)的(de)(de)(de)(de)(de)。