The invention discloses high-whiteness
sodium aluminum silicate as well as a preparation method and application thereof. The preparation method comprises the following steps: adding an aluminum
salt solution and water into a reaction kettle until the pH value is 4-6, stirring and heating to 45-65 DEG C; an aluminum
salt solution and a
sodium silicate solution are added for a reaction, the pH value is 4-6, the temperature is 45-65 DEG C, and the reaction time is 10-30 min; continuously adding the
sodium silicate solution until the pH value is adjusted to 8-10; the
sodium silicate solution and the aluminum
salt solution are continuously added, the pH value is 8-10, the reaction is carried out for 50-70 min, and aging is carried out after flow merging is finished; adding a
sulfuric acid solution, adjusting the pH value to 3.5-4.5, adding a
masking agent, and stirring; and carrying out
solid-liquid separation, washing, pulping and
drying on the solution obtained in the previous step to obtain a high-whiteness sodium
aluminum silicate product. The high-whiteness sodium
aluminum silicate prepared by the method is high in whiteness and good in
dispersity, and has the advantages of being simple in production process, low in cost and capable of realizing large-scale production.