Today rice husk is used as industrial fuel. This leads to production of large quantity of rice husk ash (RHA). RHA is now used mostly as land fill. We offer to unlock the value of RHA. The RHA is digested and concentrated to the desired concentration, Sodium Silicate is pure and clear, No. plants in operation – 4, Related Technology, Precipitated Silica – Rubber Industries, Amorphous silica – Solar Cell, Silica Gel – drying, Magnesium Silicate – oil filtration.