A mix for the manufacture of ceramic articles comprising at least two of the following components: - a frit comprising: - silicon dioxide present in a concentration by weight, evaluated with respect to the total weight of the frit, comprised between 30% and 75%; - calcium oxide or magnesium oxide present in a concentration by weight, evaluated with respect to the total weight of the frit, comprised between 0.01% and 50%; - aluminum oxide, present in a concentration by weight, evaluated with respect to the total weight of the frit, comprised between 0.01% and 30%; - one or more flux materials comprising tectosilicates; - one or more binding materials comprising phyllosilicates; wherein the at least two components are present in the following concentrations by weight, the frit is present in a concentration by weight, evaluated with respect to the total weight of the dry mix, comprised between 60% and 90%, the one or more flux materials are present in a concentration by weight, evaluated with respect to the total weight of the dry mix, comprised between 0% and 40% and the one or more binding materials are present in a concentration by weight, evaluated with respect to the total weight of the dry mix, comprised between 0% and 40% and wherein the components for heating at temperatures above 600°C react with each other to form a ceramic article having a concentration by weight of crystalline free silica, evaluated with respect to the total weight of the product, less than 1%.