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While metal is removed from slags the remaining matrix material can be recycled 

 

Slag is a by-product  of metal production. It often contains high amounts of valuable, though environmentally detrimental, metals including chromium (Cr), vanadium (V), manganese (Mn) and molybdenum (Mo).

Thus, recovery of these metals  is significant to replenish critical raw material stocks and important for safeguarding the environment. In addition, slags cannot be used as secondary raw material (e.g. construction materials) today, just because they contain these specific metals. Selective removal of these metals without significantly affecting the slag matrix material could overcome this problem.

VITO solution

VITO developed a new process  for selective recovery of valuable metals from waste materials, such as metal-containing slags. This way environmental impact of slags is reduced, their recyclability improved and depletion of natural ore deposits delayed. Only the desired metals are removed so that the remaining mineral matrix can be further valorised into, for example, building materials.

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