| 摘要 |
<p>The procedure comprises obtaining a adduct of the formula 4Na2SO4.2H2O2.NaCl in a fashion integrated into the manufacture of Na2SO4, regardless of the production procedure for Na2SO4 and in any of the stages thereof, by means of the addition to a working solution that comprises Na2SO4, NaCl and H2O2 of a source of Na2SO4, a source of NaCl and a source of H2O2, in sufficient quantities to obtain said SPS adduct and the separation of said adduct. The procedure is applicable to the Na2SO4 producing industry and allows the impure residues, solid or in solution, of mineral origin or generated as a sub-product in other industries to be used and/or the changing of the production of sodium sulphate partially or completely, to obtain said adduct useful in washing powders as a whitener.</p> |
