Magnesium Hydroxide as a Caustic Soda and Sodium Silicate Substitute and Cellulose Protector in Pulp Bleaching

Magnesium Hydroxide as a Caustic Soda and Sodium Silicate Substitute and Cellulose Protector in Pulp Bleaching

Magnesium hydroxide can offer economic and process benefits in pulp bleaching. Cost savings from the reduction or elimination of certain bleach chemicals can be achieved by employing CellGuard^® MH magnesium hydroxide powder as an alternative alkali and cellulose protector. Additional benefits such as a reduction in BOD/COD and anionic trash can improve wastewater treatment and papermaking operations downstream. CellGuard^® MH, a high purity magnesium hydroxide powder, can be used as a cellulose protector in oxygen delignification systems, as a substitute for caustic soda and sodium silicate in mechanical pulp peroxide bleaching, and as a partial substitute for caustic soda in EOP and EP and chlorine dioxide bleaching for chemical or kraft pulp.