C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 11/59 (2006.01) C04B 14/04 (2006.01) C09K 11/64 (2006.01) C09K 11/66 (2006.01) C09K 11/67 (2006.01) C09K 11/74 (2006.01) C09K 11/77 (2006.01)
Patent
CA 2102900
2102900 9220757 PCTABS00017 A photo-luminescent calcium silicate material, comprising photo-luminescent fibro-crystalline wollastonite crystals activated with an activator comprising at least one element selected from the group consisting of Mn, Pb, Er, Tm, W, Nb, Ti, Cr, Sn, and Bi, and disseminated in a calcium silicate glass matrix having a low content of alkali metal oxides. This material is produced by: introducing a raw material comprising a mixture of calcareous and siliceous materials and activators selected from the group consisting of oxides, hydroxides and salts of the above-mentioned elements into a rotary kiln; melting said mixture at least partially; withdrawing this mixture from the rotary kiln; cooling the withdrawn material to a partially crystallized product; and if desired subjecting this product to further crystallisation in a recrystallization step. A photo-luminescent concrete containing the above-mentioned photo-luminescent material as aggregate as well as a photo-luminescent gravel material consisting of the above-mentioned photo-luminescent concrete.
Fundal Erling
Krogh Steen M.
Gowling Lafleur Henderson Llp
Krogh Steen M.
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