Patent ID: 7128782

Claim:
A chromium reducing liquid composition, comprising: an aqueous liquid carrier containing tin sulfate simultaneously in both dissolved form and as substantially uniformly dispersed solid particles having an average particle size of 0.001 to 1.0 microns, said substantially uniformly dispersed solid particles being dispersed in said liquid carrier in an amount not less than 40% and not greater than 70% based on total weight of said liquid composition; said aqueous liquid carrier comprising water in the amount of 5% to 50% based on total weight of said liquid composition; said aqueous liquid carrier further comprising a biopolymer polysaccharide viscosity modifying agent selected from the group consisting of diutan and xanthan, said biopolymer polysaccharide being present in an amount no less than 0.1% and no greater than 10.0% based on total weight of said chromium reducing liquid composition; and said biopolymer polysaccharide viscosity modifying agent operative to provide a uniformity of concentration of said tin sulfate within said chromium reducing liquid composition, even after storage of said chromium reducing liquid composition after 28 days, a sheer thinning characteristic for ease of pumping said chromium reducing liquid into a cement manufacturing process whereby cement is ground from clinker, said aqueous liquid carrier containing tin sulfate at higher levels than would be normally achieved by dissolving tin sulfate in water alone.