A Method for the Production of Barium Hydroxide from Barytes

Citation

Sheffield, Harold Clough (1925) A Method for the Production of Barium Hydroxide from Barytes. Bachelor's thesis, California Institute of Technology. doi:10.7907/tdct-qz72. https://resolver.caltech.edu/CaltechTHESIS:08082024-160329147

Abstract

The inertness of barytes has led to many experiments and patents for its reduction. It was decided to effect the reduction of the barytes in a cement kiln with carbon. The temperature of the greatest yield with the least water insoluble material is between 1000°C and 1100°C and with a minimum period of heating. The yield is about 87% of the original barytes. The resulting BaS is quenched with water and ground to 20 mesh. The leaching is very quickly accomplished and the temperature of the solution is raised 80°C to bring more material into solution. The solution is then filtered, a theoretical amount of CuO added and the mixture boiled. The resulting CuS is filtered off and CuO regenerated by roasting. The Ba(OH)₂ solution is evaporated down and the solid precipitated out by cooling. The material is in the form of Ba(OH)₂8H₂O, and must be heated to a dark red heat to drive off all the water of crystallization.

Thesis Files