Zastosowanie popiołu lotnego ze spalania węgla kamiennego jako osnowy ziarnowej mas formierskich utwardzanych chemicznie

Abstract

The article presents the physicochemical, structural and textural proprieties of the fly-ash and the fly-ash after the pressure agglomeration. The obtained agglomerate was used as grain of moulding sands with the hydrated sodium silicate as a binder hardened by gaseous $CO_2$. It is ascertained that it is possible to obtain suchlike moulding sands with suitable technological properties (compression strength and permeability).