Process for producing sodium percarbonate in granular form

摘要

Process for producing sodium percarbonate in granular form, wherein an aqueous solution or suspension of sodium carbonate is treated with an aqueous solution of hydrogen peroxide in the presence of an hydrogen peroxide stabilizer. After precipitation of the sodium percarbonate, this is separated, and the resulting mother waters, wholly or partly, recycled, previous concentration and decomposition of the residual hydrogen peroxide. Such a process allows to obtain a granulate having an high apparent density, with high intrinsic stability and mechanical resistance, consisting of particles having spheroidal morphology and controlled granulometric distribution and free from fine particles.