Stanley A. Heimburger - Richmond, CA Steve E. Tremblay - Richmond, CA Tommy Y. Meng - Lawrenceville NJ
Assignee:
FMC Corporation - Philadelphia PA
International Classification:
D21C 304
US Classification:
162 76
Abstract:
A process is provided for peroxygen bleaching of high yield pulp in which sodium carbonate replaces sodium hydroxide and sodium silicate. The process employs a chelating agent as a substitute for the silicate normally required so that the process can operate as a closed cycle system.