Artigo de peri??dico
High chemical stability of stoneware tiles containing waste metals
Registro en:
0955-2219
30
10.1016/j.jeurceramsoc.2010.02.017
Autor
REINOSA, J.J.
SILVA, A.C.
RUBIO-MARCOS, F.
MELLO CASTANHO, S.R.H.
MOYA, J.S.
FERNANDEZ, J.F.
Resumen
Stoneware tiles were produced by the incorporation of galvanic waste to industrial compositions that were processed from kaolinitic clay, feldspar,
quartz and recycled domestic glass. The galvanic waste required a calcination step to eliminate the gas forming species prior to its incorporation
into industrial processes and crystalline phases were formed. After that, the effective incorporation of metals from the galvanic waste was attained
through the formation and the refinement of crystalline phases that acted as pigments. During the fast firing the calcined galvanic waste only got
partially dissolved in the liquid phase that developed in spinel phase nanocrystals. The followed procedure allowed to effective immobilization of
up to 10 wt% of waste with heavy metals in a porcelain stoneware that satisfy both the mechanical and the chemical standards required to massively
commercialize such a product