KR100368339B1 - Method for treating metal dust obtained in condenser-preparing process - Google Patents
Method for treating metal dust obtained in condenser-preparing process Download PDFInfo
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- KR100368339B1 KR100368339B1 KR10-2001-0002512A KR20010002512A KR100368339B1 KR 100368339 B1 KR100368339 B1 KR 100368339B1 KR 20010002512 A KR20010002512 A KR 20010002512A KR 100368339 B1 KR100368339 B1 KR 100368339B1
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- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
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Abstract
본 발명은 콘덴서 제조시 발생되는 금속분진의 처리방법에 관한 것으로, 좀 더 구체적으로는 콘덴서 제조시 발생되는 주석, 납 및 아연을 함유하는 금속분진 200kg에 물 150∼250ℓ 및 황산 15∼25ℓ을 혼합후 반응시켜 액으로 녹아나온 아연을 분리시키는 단계; 아연이 분리된 금속분진을 물로 세척하는 단계; 상기 세척된 금속분진을 용해로 넣고 염화아연 3∼7㎏ 및 염화암모늄 3∼7㎏을 첨가한 다음, 350∼450℃에서 가열시키는 단계; 및 상기 가열단계후 얻어진 주석과 납의 혼합금속을 회수하는 단계를 포함하는 콘덴서 제조시 발생되는 금속분진의 처리방법에 관한 것이다. 본 발명은 기존에 특별한 처리방법이 없어 매립되거나 폐되었던 콘덴서 제조시 발생되는 금속분진을 재활용 함으로써 경제적일 뿐만 아니라 환경적으로도 친화적인 효과가 있다.The present invention relates to a method for treating metal dust generated during the production of a capacitor, and more specifically, 150-250 L of water and 15-25 L of sulfuric acid are mixed with 200 kg of metal dust containing tin, lead and zinc generated during the production of a capacitor. Reacting to separate zinc melted into the liquid; Washing zinc-separated metal dust with water; Adding the washed metal dust to the melt, adding 3-7 kg of zinc chloride and 3-7 kg of ammonium chloride, and then heating at 350-450 ° C .; And it relates to a method for treating metal dust generated during the production of a capacitor comprising the step of recovering a mixed metal of tin and lead obtained after the heating step. The present invention is economical as well as environmentally friendly by recycling the metal dust generated during the manufacturing of capacitors that have been buried or disposed because there is no special treatment method.
Description
본 발명은 콘덴서 제조시 발생되는 금속분진의 처리방법에 관한 것으로, 좀 더 구체적으로는 콘덴서 업체에서 발생되는 금속분진(주석+납+아연)의 처리하는 방법과 이의 생성물을 땜납으로 사용하는 방법에 관한 것이다.The present invention relates to a method of treating metal dust generated during capacitor manufacturing, and more particularly, to a method of treating metal dust (tin + lead + zinc) generated by a capacitor manufacturer and a method of using the product thereof as solder. It is about.
산업경제가 고도로 성장해감에 따라 환경오염의 문제가 날로 증대해 가는바 대량으로 배출되는 지정 폐기물의 처리문제가 중요시 되고 있다. 이러한 폐기물로는, 예를 들어, 고철 스크랩을 용융하는 전기 제강로 안에서 흑연전극과 강 스크랩 사이에서 아크로 인해 발생되는 제강분진, 또는 각종 전자제품에 들어가는 콘덴서 제조시 발생되는 금속분진 등이 있다. 상기 금속분진은 주석 약 60중량%, 납 약 30중량% 및 아연 약 10중량%로 구성되어 있다.As the industrial economy grows rapidly, the problem of environmental pollution is increasing day by day, and the problem of disposal of designated wastes emitted in large quantities is becoming important. Such wastes include, for example, steelmaking dust generated by an arc between the graphite electrode and the steel scrap in an electric steelmaking furnace for melting scrap metal scrap, or metal dust generated in the production of capacitors for various electronic products. The metal dust is composed of about 60 wt% tin, about 30 wt% lead, and about 10 wt% zinc.
이러한 폐기물은 점차 강력해지는 환경규제 때문에 매립이 어려울 뿐만 아니라 납, 아연, 구리, 주석, 카드늄 등 유해 금속성분들이 포함된 침출수에 의한 강물이나 토양의 오염 때문에 매립하지 않고 폐기물을 처리해야 하는 과제를 안고 있으며, 따라서, 유해 중금속이 함유된 폐기물을 안전하고 경제적으로 처리하는 것이 중요하다. 그 결과, 상기 폐기물로부터 금속성분을 회수하여 자원으로 재 활용함으로써 폐기물 처리비용을 절약하고자 하는 방법들이 다양하게 제시되고 있다.These wastes are difficult to landfill due to increasingly stringent environmental regulations, and they have to deal with wastes without landfill due to contamination of river or soil by leachate containing harmful metals such as lead, zinc, copper, tin and cadmium. Therefore, it is important to safely and economically treat wastes containing harmful heavy metals. As a result, various methods have been proposed to reduce waste disposal costs by recovering metal components from the waste and reusing them as resources.
전기로의 제강분진으로부터 아연을 회수하는 방법은 열 야금학적인 방법과 습식 야금학적인 방법이 알려져 있고, 한국 공개특허 제97-61957호 및 제2000-52330호 등과 같은 특허들도 다수 출원되어 있지만, 콘덴서 제조시 발생되는 금속분진을 처리하는 밥법에 대하여는 알려진 특허 또는 논문이 전무한 상태이다.The method for recovering zinc from steelmaking dust in an electric furnace is known as a thermal metallurgical method and a wet metallurgical method, and many patents such as Korean Patent Publication Nos. 97-61957 and 2000-52330 have been filed. There are no known patents or papers on the rice method for treating metal dust generated at the time.
우리나라의 경우, 콘덴서 제조시 발생되는 금속분진은 전자제품 공장에서 적게는 매월 100㎏에서 많게는 매월 5,000㎏까지 발생되며, 이러한 공장이 전국적으로 약 100여개 정도가 있는 실정이다. 현재, 이들의 약 50%는 매립되는 실정이고, 나머지는 가내수공업적인 비효율적인 방법으로 처리되고 있는 실정이다.In Korea, metal dust generated during the manufacturing of capacitors is generated from electronic equipment factories at least 100 kg per month to as much as 5,000 kg per month, and there are about 100 such factories nationwide. Currently, about 50% of them are landfilled, and the rest are processed by domestic inefficient methods.
이에 본 발명에서는 상술한 문제점을 해결하기 위하여 대부분 매립되고 있는 금속분진(주석+납+아연)을 적정처리하면서 재활용하여 제품으로 생산하고자 상당 기간 기술개발에 투자하여 공해를 최대한 발생시키지 않으면서 금속으로 환원시키는 기술을 개발하였고, 본 발명은 이에 기초하여 완성되었다.Therefore, in the present invention, to solve the above-mentioned problems, the metal dust (tin + lead + zinc), which is mostly buried, is recycled while appropriately produced to produce a product, which is invested in technology development for a considerable period of time without generating pollution. A technique for reducing has been developed and the present invention has been completed based on this.
따라서, 본 발명의 목적은 콘덴서 제조시 발생되는 금속분진으로부터 주석과 납, 및 아연을 회수하고, 상기 주석과 납은 땜납으로 사용할 수 있는 콘덴서 제조시 발생되는 금속분진의 처리방법을 제공하는데 있다.Accordingly, an object of the present invention is to provide a method for treating metal dust generated during capacitor production, in which tin, lead, and zinc are recovered from metal dust generated during capacitor production, and the tin and lead can be used as solder.
상기 목적을 달성하기 위한 본 발명의 콘덴서 제조시 발생되는 금속분진의 처리방법은 콘덴서 제조시 발생되는 주석, 납 및 아연을 함유하는 금속분진 200kg에 물 150∼250ℓ 및 황산 15∼25ℓ을 혼합후 반응시켜 액으로 녹아나온 아연을 분리시키는 단계; 아연이 분리된 금속분진을 물로 세척하는 단계; 상기 세척된 금속분진을 용해로 넣고 염화아연 3∼7㎏ 및 염화암모늄 3∼7㎏을 첨가한 다음, 350∼450℃에서 가열시키는 단계; 및 상기 가열단계후 얻어진 주석과 납의 혼합금속을 회수하는 단계를 포함한다.In order to achieve the above object, a method of treating metal dust generated in the production of the condenser according to the present invention is performed after mixing 150-250 L of water and 15-25 L of sulfuric acid to 200 kg of metal dust containing tin, lead, and zinc generated during the production of a capacitor. Separating zinc melted into the liquid; Washing zinc-separated metal dust with water; Adding the washed metal dust to the melt, adding 3-7 kg of zinc chloride and 3-7 kg of ammonium chloride, and then heating at 350-450 ° C .; And recovering a mixed metal of tin and lead obtained after the heating step.
도 1은 본 발명에 따른 제조 공정을 개략적으로 나타낸 블럭도이다.1 is a block diagram schematically showing a manufacturing process according to the present invention.
이하 본 발명의 제조방법을 첨부된 도면을 참조하여 좀 더 구체적으로 살펴보면 다음과 같다.Hereinafter, the manufacturing method of the present invention will be described in more detail with reference to the accompanying drawings.
도 1은 본 발명에 따른 제조 공정을 개략적으로 나타낸 블럭도로서, 먼저, 콘덴서 제조시 발생되는 주석, 납 및 아연을 함유하는 금속분진에 물 및 황산을 작업용 탱크에서 혼합시킨다(S1). 전술한 바와 같이, 상기 금속분진은 주석 약 60중량%, 납 약 30중량% 및 아연 약 10중량%로 구성되어 있기 때문에, 이를 약 1 내지 3시간 반응시키면 아연은 액으로 녹아나와 처리되고, 주석과 납은 녹지않고 가루상태(슬러지)로 잔존한다(S2). 그 다음, 슬러지 상태의 주석과 납은 깨끗한 물로 2∼4회 세척한다(S3). 이렇게 세척한 금속분진(주석+납의 혼합금속)을 용해로 정제솥에 넣고 염화아연 및 염화암모늄을 혼합한 다음, 가열(S4)하면, 금속상태로 주석과 납이 혼합된 재생품(S5)을 얻을 수 있고, 아연은 초기에 액으로 분리시켰기 때문에 상기 재생품은 순순한 땝납으로 사용이 가능하다.1 is a schematic block diagram showing a manufacturing process according to the present invention, first, water and sulfuric acid are mixed in a working tank with metal dust containing tin, lead, and zinc generated during capacitor manufacturing (S1). As described above, since the metal dust is composed of about 60% by weight of tin, about 30% by weight of lead, and about 10% by weight of zinc, when reacted for about 1 to 3 hours, zinc is dissolved into a liquid and treated. Per lead does not melt and remains in a powder state (sludge) (S2). Then, the sludge tin and lead is washed 2-4 times with clean water (S3). The metal dust (tin + lead mixed metal) thus washed is placed in a refining furnace, mixed with zinc chloride and ammonium chloride, and heated (S4) to obtain a regenerated product (S5) in which tin and lead are mixed in a metal state. Since zinc was initially separated into a liquid, the regenerated product can be used as pure solder.
본 발명에 따르면, 제1단계(S1)에서 투입되는 물과 황산은 금속분진 200kg에 물 150∼250ℓ 및 황산 15∼25ℓ을 혼합시킨다. 이때, 황산의 농도가 낮으면 아연의 분리가 어렵고, 너무 높으면 아연 뿐만 아니라 납도 함께 용출되는 경향이 있다. 아울러, 제4단계(S4)에서 투입되는 염화아연 및 염화암모늄은 상기 세척된 금속분진에 대하여 각각 3∼7㎏을 첨가한다. 이 경우에도 염화아연 및 염화암모늄을 상기 범위 밖으로 첨가하면 주석과 납의 혼합금속을 얻기가 어렵고, 찌거기 상태로 회수되는 단점이 있다. 또한, 반응온도는 350∼450℃가 바람직한데, 350℃ 미만이면 주석과 납의 혼합금속을 얻기가 어렵고, 450℃를 초과하면 납이 용출되는 경향이 있다.According to the present invention, the water and sulfuric acid introduced in the first step (S1) is mixed with 150-250 L of water and 15-25 L of sulfuric acid in 200 kg of metal dust. At this time, when the concentration of sulfuric acid is low, it is difficult to separate zinc, and when too high, not only zinc but also lead tends to elute together. In addition, zinc chloride and ammonium chloride added in the fourth step (S4) are added to the 3 to 7kg to the washed metal dust, respectively. Even in this case, when zinc chloride and ammonium chloride are added outside the above ranges, it is difficult to obtain a mixed metal of tin and lead, and has a disadvantage in that it is recovered in a residue state. In addition, the reaction temperature is preferably 350 to 450 ° C. If it is less than 350 ° C, it is difficult to obtain a mixed metal of tin and lead, and if it exceeds 450 ° C, lead tends to elute.
이하 실시예를 통하여 본 발명을 좀 더 구체적으로 살펴보지만, 하기 예에 본 발명의 범주가 한정되는 것은 아니다.Hereinafter, the present invention will be described in more detail with reference to the following examples, but the scope of the present invention is not limited to the following examples.
실시예 1Example 1
물 200ℓ, 황산 20ℓ 및 콘덴서 제조시 발생된는 금속분진(주석 약 60중량%, 납 약 30중량% 및 아연 약 10중량%) 200㎏을 혼합후 작업용 탱크에 넣고 약 2시간 반응시켰다. 아연은 액으로 녹아나와 처리되고 주석과 납은 녹지않고 가루상태로(슬러지)로된 것을 건저내어 깨끗한 물로 2번 세척하여 용해로 정제솥에 넣고 염화아연 5㎏, 염화암모늄 5㎏을 혼합하여 섞은 다음, 약 400℃에서 가열시켰다. 그 결과, 금속상태로 주석과 납 혼합된 재생품을 얻었다.200 L of water, 20 L of sulfuric acid, and 200 kg of metal dust (about 60% by weight of tin, about 30% by weight of lead and about 10% by weight of zinc) generated in the condenser were mixed and put into a working tank and reacted for about 2 hours. Zinc is dissolved in liquid and treated, tin and lead are not dissolved, and the powdered (sludge) is dried, washed twice with clean water, placed in a refining furnace and mixed with 5 kg of zinc chloride and 5 kg of ammonium chloride. Heated at about 400 ° C. As a result, a recycled product in which tin and lead were mixed in a metal state was obtained.
실시예 2Example 2
물 200ℓ, 황산 25ℓ 및 콘덴서 제조시 발생된는 금속분진(주석 약 60중량%,납 약 30중량% 및 아연 약 10중량%) 200㎏을 혼합후 작업용 탱크에 넣고 약 2시간 반응시켰다. 아연은 액으로 녹아나와 처리되고 주석과 납은 녹지않고 가루상태로(슬러지)로된 것을 건저내어 깨끗한 물로 2번 세척하여 용해로 정제솥에 넣고 염화아연 3㎏, 염화암모늄 7㎏을 혼합하여 섞은 다음, 약 400℃에서 가열시켰다. 그 결과, 금속상태로 주석과 납 혼합된 재생품을 얻었다.200 L of water, 25 L of sulfuric acid, and 200 kg of the metal dust (about 60 wt% tin, about 30 wt% lead and about 10 wt% zinc) generated in the condenser were mixed and put into a working tank and reacted for about 2 hours. Zinc is dissolved in liquid and treated, tin and lead are not dissolved, and the powder (sludge) is dried, washed twice with clean water, placed in a refining furnace and mixed with 3 kg of zinc chloride and 7 kg of ammonium chloride. Heated at about 400 ° C. As a result, a recycled product in which tin and lead were mixed in a metal state was obtained.
실시예 3Example 3
물 200ℓ, 황산 15ℓ 및 콘덴서 제조시 발생된는 금속분진(주석 약 60중량%, 납 약 30중량% 및 아연 약 10중량%) 200㎏을 혼합후 작업용 탱크에 넣고 약 3시간 반응시켰다. 아연은 액으로 녹아나와 처리되고 주석과 납은 녹지않고 가루상태로(슬러지)로된 것을 건저내어 깨끗한 물로 2번 세척하여 용해로 정제솥에 넣고 염화아연 7㎏, 염화암모늄 3㎏을 혼합하여 섞은 다음, 약 400℃에서 가열시켰다. 그 결과, 금속상태로 주석과 납 혼합된 재생품을 얻었다.200 L of water, 15 L of sulfuric acid, and 200 kg of metal dust (about 60% by weight of tin, about 30% by weight of lead and about 10% by weight of zinc) generated in the condenser were mixed and put into a working tank and reacted for about 3 hours. Zinc is dissolved and treated as a solution, tin and lead are not dissolved, and the powdered (sludge) is dried out and washed twice with clean water. Heated at about 400 ° C. As a result, a recycled product in which tin and lead were mixed in a metal state was obtained.
상기 실시예 1 내지 3의 방법으로 1일 금속분말 1,000㎏을 처리하여 아연은 약 100㎏을 얻었고, 나머지(주석 및 납의 혼합금속) 약 900㎏을 처리한 결과, 95%는 주석 및 납의 혼합금속으로 회수하였고, 약 5%는 플럭스를 형성하였다.The method of Examples 1 to 3 was treated with 1,000 kg of metal powder per day to obtain about 100 kg of zinc, and the remaining (mixed metal of tin and lead) of about 900 kg, 95% of the mixed metal of tin and lead And about 5% formed flux.
상기 주석 및 납의 혼합금속은 아연이 액으로 빠져나갔기 때문에 순순한 땝납으로 사용하였다. 그 결과, 땜납으로 사용에 전혀 문제가 없었다.The mixed metal of tin and lead was used as pure solder because zinc escaped into the liquid. As a result, there was no problem in use with solder.
전술한 바와 같이, 본 발명은 기존에 특별한 처리방법이 없어 매립되거나 폐되었던 콘덴서 제조시 발생되는 금속분진을 재활용 함으로써 경제적일 뿐만 아니라환경적으로도 친화적인 효과가 있다.As described above, the present invention is economical as well as environmentally friendly by recycling the metal dust generated during the manufacturing of a capacitor which was previously buried or discarded because of no special treatment method.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57198225A (en) * | 1981-05-29 | 1982-12-04 | Sumitomo Metal Mining Co Ltd | Treatment of copper-containing refining smoke ash |
| JPS61257432A (en) * | 1985-05-08 | 1986-11-14 | Sumitomo Metal Mining Co Ltd | Separation and recovery of impurity from copper |
| JPH04285136A (en) * | 1991-03-13 | 1992-10-09 | Sumitomo Metal Mining Co Ltd | Method for recovering lead and zinc from copper converter dust leaching residue |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57198225A (en) * | 1981-05-29 | 1982-12-04 | Sumitomo Metal Mining Co Ltd | Treatment of copper-containing refining smoke ash |
| JPS61257432A (en) * | 1985-05-08 | 1986-11-14 | Sumitomo Metal Mining Co Ltd | Separation and recovery of impurity from copper |
| JPH04285136A (en) * | 1991-03-13 | 1992-10-09 | Sumitomo Metal Mining Co Ltd | Method for recovering lead and zinc from copper converter dust leaching residue |
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