Sand sillica Estimation
The total ash is dissolved in dilute acids when all minerals except sand and silica go into solution.The solution is then filtered off and the residue left behind is ignited,cooled and thus the estimation of the presence of silica and sand can be calculated.
Estimate sand and silica in ashes
Formula:
percentage of sand and silica = (weight of insoluble ash *100/weight of sample)
Thus by dissolving in dilute acids, estimation of the percentage of sand and silica in ashes can be calculated using this free online ../Chemistry.