Sökning: "pulp characterization"
Visar resultat 16 - 20 av 75 avhandlingar innehållade orden pulp characterization.
16. Polyelectrolyte Complexes : Their Characterization and use for Modification of Wood Fibre Surfaces
Sammanfattning : For economical reasons filler particles and less expensive fibre raw materials are more frequently used in papermaking. This influences the mechanical properties of the formed papers in a negative way and it is therefore necessary to add strength-enhancing agents to the papermaking furnish. LÄS MER
17. Ultrasonic measurement technology for characterization of pulp fibre suspensions
Sammanfattning : In the papermaking industry, there is a need for sensors to measure the properties of the fibre suspension that determine important parameters in the finished paper. This lack of on-line sensors hampers the development of advanced process control strategies. LÄS MER
18. Dusting in a lime kiln - Characterization of the material and unit operations
Sammanfattning : The present thesis describes the background of, and gives some points of orientation for, the phenomenon of dusting in the burner zone of a lime kiln. The aim of this study is twofold: to increase knowledge of the factors that influence the degree of dusting and also to investigate the effect a dusting lime kiln has on the white liquor preparation process. LÄS MER
19. Turbulence measurements in fiber suspension flows : experimental methods and results
Sammanfattning : Turbulent mixing is present in many pulp and paper processes. It is a particularly important factor in the design and improvements of the paper machine headbox, influencing the final paper structure. LÄS MER
20. Distributions Of Fiber Characteristics As A Tool To Evaluate Mechanical Pulps
Sammanfattning : Mechanical pulps are used in paper products such as magazine or news grade printing papers or paperboard. Mechanical pulping gives a high yield; nearly everything in the tree except the bark is used in the paper. This means that mechanical pulping consumes much less wood than chemical pulping, especially to produce a unit area of printing surface. LÄS MER