Westinghouse Electric Corporation

William D Partlow

Edward Jean Lahoda

David C Grant

John Bartko

Thomas V Congedo

Steven H Peterson

Michael C Skriba

Edward F Sverdrup

Arthur L Wolfe

Robert E Witkowski

The concentrations of residual heavy metal contaminants in the particulate material in a slurry produced in a particulate material washing process are monitored on-line and can be used to control the washing process. In alternative embodiments of the invention, x-rays, thermal neutrons or laser beams are directed at the slurry as it flows through a flow cell to induce emission of secondary x-rays, gamma rays or light, respectively, characteristic of the heavy metal contaminants and constituents representative of the solids contents of the slurry. These characteristic energies are measured and used to determine the concentration in ppm of the residual heavy metal contaminants in the particulate material within the slurry.

System and method for on-line monitoring and control of heavy metal

Growing community of inventors

Forest Hills, PA, United States of America

William D Partlow