. Extensive research was
undertaken on the possibility to improve properties of
ceramics by lithium minerals, althought the work
acknowledges that individual research on particular
bodies and firing conditions may be necessary, tha main
conclusions are: incorporation of lithium into the body
leads to increased activity of the glassy phase during the
consolidation process; the increased reactivity results
in reductions of both firing times and temperatures;
linear contraction of tile during firing is reduced and,
as a consequence, losses caused by imperfections in size
are decreased; there is improved surface quality of the
tile in terms of spot resistance and developing of colors