The disposal of lime waste at the Dupont Waynesboro, Virginia plant

An investigation was made of the properties and utility or the lime slurry from the acetylene generators of the E. I. DuPont de Nemours Co. plant at Waynesboro, Virginia in seeking methods for its disposal. The slurry was found to run from 7% to 17% in solids, which settle rapidly, and the solids to contain 88% calcium hydroxide. It was found impractical to dispose of the slurry by draining in lime ponds for farm haulage, by drying with flue gases or by dumping it in the nearby South River. It was found feasible to dry the slurry for agricultural uses by adding burnt lime and to prepare insecticides such as lime-sulfur and calcium arsenate, the market for which materials was found extensive in the region.