What is the main composition of potash feldspar tailings?

In order to understand the use of potassium feldspar tailing, we must first understand the chemical composition of potassium feldspar tailing? The main chemical composition of potash feldspar tailings is SiO2Al2O3, and the total amount is more than 85%. It is the tailings left after the mining of potash feldspar, and its recyclable value is quite high.