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Metals 2016, 6(8), 174; doi:10.3390/met6080174

Leaching Behavior of Al, Co and W from the Al-Alloying Treated WC-Co Tool as a New Recycling Process for WC Hard Scrap

Department of Energy & Resources Engineering, Kangwon National University, Chuncheon 24341, Korea
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Author to whom correspondence should be addressed.
Academic Editor: Hugo F. Lopez
Received: 7 July 2016 / Revised: 20 July 2016 / Accepted: 21 July 2016 / Published: 25 July 2016
View Full-Text   |   Download PDF [2130 KB, uploaded 25 July 2016]   |  

Abstract

The Al-alloying treated tungsten carbide (WC)-Co tool was subjected to grinding using a jaw crusher and planetary mill followed by three wet chemical treatment steps to establish an effective recycling process for WC scraps, especially those generated as bulky and hard scrap. This alloyed WC tool was readily ground to a powder of 1 mm or less and divided into two portions that were 150 µm in size. The wet chemical treatments enabled us to recover W to 69.44% from the under-sized 150 µm and also obtain WC powders from the over-sized 150 µm with a high purity of 98.9% or more. View Full-Text
Keywords: WC-Co tool; Al-alloying treatment; wet chemical treatment; recovery of W; pure WC powder WC-Co tool; Al-alloying treatment; wet chemical treatment; recovery of W; pure WC powder
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Lee, J.; Lee, J.; Kim, B.; Kim, Y. Leaching Behavior of Al, Co and W from the Al-Alloying Treated WC-Co Tool as a New Recycling Process for WC Hard Scrap. Metals 2016, 6, 174.

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