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報廢銀鎢觸頭回收銀和鎢的工藝研究
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國家科技支撐計劃項目（2008BAC46B04）；江蘇省高?？蒲谐晒a(chǎn)業(yè)化推進項目（JH09-16）；江蘇技術(shù)師范學(xué)院基礎(chǔ)及應(yīng)用基礎(chǔ)研究基金項目（KYY08018）


Recycling Process of Silver and Tungsten from Waste Ag-W Alloy Contact
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    摘要:

    銀鎢合金觸點是重要的電接觸材料，報廢銀鎢觸點中銀鎢的分離和資源化問題引起了越來越多的重視。以報廢銀鎢觸頭為原料，提出了“一次分銀-焙燒-二次分銀”的回收工藝，考察了銀鎢分離的工藝條件，通過實踐驗證了其可靠性，銀、鎢的回收率達到99%以上?；厥盏玫降你y和鎢可分別深加工成粒度為0.3~0.6 μm的超細銀粉和純凈的WO3產(chǎn)品。

    Abstract:

    Ag-W alloy contact is one kind of important electrical contact materials, and the separation and recycling of sliver and tungsten from waste Ag-W alloy contact has attracted more and more attention for the resource value and secondary pollution during the recycling process. A novel process about the separation and recycling of sliver and tungsten from waste Ag-W alloy contact has been proposed, which includes 4 steps of first leaching silver, roasting, secondary leaching silver and ammonia leaching. The result shows that the recovery rate of Ag and W is higher than 99%, and 0.3-0.6 μm superfine silver powders and pure WO3 powders can be obtained during the recycling process.

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王 琪,婁德大,徐元萍,周全法.報廢銀鎢觸頭回收銀和鎢的工藝研究[J].稀有金屬材料與工程,2011,40(10):1817~1821.[Wang Qi, Lou Deda, Xu Yuanping, Zhou Quanfa. Recycling Process of Silver and Tungsten from Waste Ag-W Alloy Contact[J]. Rare Metal Materials and Engineering,2011,40(10):1817~1821.]
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  • 收稿日期:2010-10-20
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