| 摘要 |
<p>The present invention relates to a process for preparation of crystalline layered sodium disilicate and more particularly, to an improved process for preparation of crystalline layered sodium disilicate, being useful as a water softener or builder of detergent composition, which is fabricated in a simple manner by adding an aqueous solution of sodium silicate as a binder, to a Anhydrous sodium disilicate cullet powder used as a starting material, in a certain composition ratio, to give granules and thereafter charging the dried granules to a furnace for crystallization process. As a result, in comparison with the prior arts, the purity of the product is increased, the preparation process is simplified and the consumption of energy is remarkably reduced, whereas the cost of the product is reduced and also the deposition of reactant in a calcined device is improved.</p> |
