EP 3 865 598 A1

Improved use of a slag from non-ferrous metal production

(22) 30.03.2016

(43) 18.08.2021

(57) Disclosed is the use in the construction industry, as a filler and/or a binder in concrete or cement, as black hard chunks, and/or as a high density ballast, of a slag comprising, on a dry basis and expressed as the total of the metal present as elemental metal and the presence of the metal in an oxidized state,

a) at least 7%wt and at most 49%wt of Fe,

b) at most 1.3%wt of Cu,

c) at least 24%wt and at most 44%wt of SiO2,

d) at least 1.0%wt and at most 20%wt of CaO,

e) at least 0.10%wt and at most 1.50%wt of Zn,

f) at least 0.10%wt and at most 2.5%wt of MgO, and

g) at most 0.100%wt of Pb.

(71) Metallo Belgium, 2340 Beerse (BE)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES Fl FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

x

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