Kaolin clay slurries of reduced viscosity

A method of preparing an aqeous clay slurry of reduced low shear viscosity, which comprises dispersing from about 60 to 72 percent by weight of particulate refined kaolin clay in water at a pH of from about 6 to 8 in the presence of from about 0.01 to 0.05 percent of water-soluble citrate, expressed as anhydrous citric acid, and from about 0.02 to 0.08 percent of water-soluble polyacrylate, expressed as sodium polyacrylate, in a ratio of from about 0.4 to 6 grams of said polyacrylate per gram of said citrate, the combined amount of said citrate and said polyacrylate being from about 0.06 to 0.11 percent, each of said percentages being expressed by weight based on the weight of said clay.