Interaction of micro/nano-metric size of Jordanian aluminosilicate raw materials with high pH solution

This study analyses the influence of particle size on the dissolution behaviour of three Jordanian raw materials. Kaolin, volcanic tuff and silica sand samples were dissolved in sodium hydroxide solution 10 M at 25 °C, and shaken for 168 h. To better understand the dissolution process, the alkaline solution was renewed after the desired time in order to know the degree of Al-Si raw material removed to the dissolution. The concentrations of leached Al and Si was used to evaluate the dissolution behaviour of the studied raw materials. The three raw materials have higher extent of leaching of Si4+ and Al3+ with decreasing the particle size.