The present invention relates to a process for forming glass-ceramic tiles. Fly ash containing organic material, metal contaminants, and glass forming materials is oxidized under conditions effective to combust the organic material and partially oxidize the metallic contaminants and the glass forming materials. The oxidized glass forming materials are vitrified to form a glass melt. Feb 05, 2013 3. Availability of Water Obviously you need plenty of water to facilitate the fly ash brick manufacturing process (preferably soft water), so its better you setup your factory where you have easy availability of water. 4. Environmental Issues Unloading Fly ash and storing it in open space generates huge air pollution to the environment. May 03, 2016 Manufacturing Process Of Fly Ash Bricks 1. Manufacturing Process Of Fly Ash Bricks 2. Fly Ash Bricks Making Machine 3. Raw Material Used in Fly Ash Brick Making Fly Ash - 45% Sand - 40% Lime Sludge 10% Gypsum - 5% Total Formula of Material - 100% 4.