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废铜的回收加工与利用
[来源:http://www.ruanhuashuishebei.net] [作者:aowl] [日期:19-06-05] [浏览次数:]

一是将废杂铜直接熔炼成不同牌号的铜合金或精铜,所以又称直接利用法; First, the scrap copper will be directly melted into different grades of copper alloy or refined copper, so it is also called direct profit. 二是将杂铜先经火法处理铸成阳极铜,然后电解精炼成电解铜并在电解过程中回收其他有价元素。用第二类方法处理含铜废物时,通常又有 3 种不同的流程,即一段法、二段法和三段法。 The two is to treat the miscellaneous copper by means of fire treatment, and then to electrolysis and refine it into electrolytic copper and recover other valuable elements in the process of electrolysis. When treating waste containing copper in second ways, there are usually 3 different processes, one stage method, two stage method and three stage method. 一段法 将分类过的黄杂铜或紫杂铜直接加进反射炉精炼成阳极铜的方法。其优点是流程短、设备简单、建厂快、投资少,但该法在处理成分复杂的杂铜时,产出的烟尘成分复杂,难以处理;同时精炼操纵的炉时长,劳动强度大,生产效率低,金属回收率也较低。 The first step is to directly mix the classified brass or purple copper into the anode furnace to refine the anode copper. Its advantages are short process, simple equipment, fast construction and less investment, but when the complex copper is treated, the composition of the produced smoke and dust is complex and difficult to be treated. At the same time, the refining furnace is long, the labor intensity is large, the production efficiency is low, and the recovery rate of metal is low. 二段法 杂铜先经鼓风炉还原熔炼得到金属铜.然后将金属铜在反射炉内精炼成阳极铜;或杂铜先经转炉吹炼成粗铜.再在反射炉内精炼成阳极铜。由于这两种方法都要经过两道工序,所以称为二段法。鼓风炉熔炼得到的金属铜杂质含量较高,呈玄色,故称为黑铜。 Copper is obtained by reduction and smelting of the two section method of copper in a blast furnace. Then the metal copper is refined into the anode copper in the reverberatory furnace; or the copper is blown into copper by the converter first, and then refined into the anode copper in the reverberatory furnace. Because these two methods have to go through two processes, they are called two sections. The content of metal copper impurity in blast furnace smelting is high, and it is black, so it is called black copper. 三段法 杂铜先经鼓风炉还原熔炼成黑铜,黑铜在转炉内吹炼成次粗铜,次粗铜再在反射炉中精炼成阳极铜。原料要经过 3 道工序处理才能生产出合格的阳极铜,故称三段法。三段法具有原料综合利用好,产出的烟尘成分简单、轻易处理、粗铜品位较高、精炼炉操纵较轻易、设备生产率也较高等优点,但又有过程较复杂、设备多、投资大且燃料消耗多等优点。因此,我国除规膜较大的企业或需处理某些特殊废渣外,一般的废杂铜处理流程多采用二段法和一段法。 The three stage method copper is first reduced to smelt black copper by blast furnace, and black copper is blown into secondary copper in the converter, and then the crude copper is refined into anode copper in the reverberatory furnace. The raw material needs 3 processes to produce qualified anode copper, so it is called the three stage method. The three section method has the advantages of comprehensive utilization of raw materials, simple composition of the produced smoke and dust, easy treatment, high grade of crude copper, easy manipulation of the refining furnace and higher equipment productivity, but it has many advantages, such as complicated process, large equipment, large investment and more fuel consumption. Therefore, in addition to the large enterprises with special regulations or special waste disposal, the general waste copper treatment process usually adopts the two stage method and the one stage method.

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