Dispersion comprising ferrous sulfate for reducing chromate in cement

摘要

A chromium VI reducing composition comprising particles of solid material selected from the group consisting of iron sulfate, the particles being substantially uniformly dispersed within a liquid carrier, the liquid carrier further comprising a diutan or xanthan polysaccharide. Methods for modifying hydratable cementitious materials using the chromium reducing composition are also disclosed and provide advantages over dry powder or dissolved forms of sulfate compositions when used in cement manufacturing.