Date of Award
12-1988
Degree Name
Master of Science
Department
Chemical and Paper Engineering
First Advisor
Dr. Richard B. Valley
Second Advisor
Dr. David K. Peterson
Third Advisor
Dr. Ellsworth Shriver
Access Setting
Masters Thesis-Open Access
Abstract
Experiments were conducted to study the effect of refining on virgin fibers as well as on recycled fibers. Interaction effects of recycling and type of treatment of virgin fibers on characteristics of secondary fiber were studied. A significant reduction in drainage properties of the furnish for both hardwood and softwood pulps were observed. This reduction in properties was found proportional to the amount of refining. It is necessary to achieve required strength properties at higher freeness values, if fibers are to be recycled. This can be done by improvement in uniformity or homogeneity of refining and by gentler and less severe fiber treatment. This also results in higher power consumption. Existing refining theories were used to correlate strength properties with refining variables and thus to obtain optimum conditions for refining in terms of development of strength properties and power consumption.
Recommended Citation
Deshpande, Rajendra D., "Energy Considerations in Stock Preparation Refining Modified by Recycling" (1988). Masters Theses. 1195.
https://scholarworks.wmich.edu/masters_theses/1195