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Conference papers
Improved Burner Designs for Optimized Lime Recovery Kiln Performance on Natural Gas Fuel, 19PEERS

Improved Burner Designs for Optimized Lime Recovery Kiln Performance on Natural Gas Fuel, 19PEERS

Conference papers
Safety Improvements In Cardox Ring Removal Technology, 19PEERS

Safety Improvements In Cardox Ring Removal Technology, 19PEERS

Conference papers
Examining upgrade options when rotary kiln tires are mounted on the kiln shell with no filler bars, 19PEERS

Examining upgrade options when rotary kiln tires are mounted on the kiln shell with no filler bars, 19PEERS

Conference papers
Nonwood Fibers in Molded Pulp Manufacture, 19PEERS

Nonwood Fibers in Molded Pulp Manufacture, 19PEERS

Conference papers
Review of the Status of Water Reduction Technologies, 19PEERS

Review of the Status of Water Reduction Technologies, 19PEERS

Conference papers
D-FLAME GasPro-Next Generation of Burners especially designed for gas fired kilns, 19PEERS

D-FLAME GasPro-Next Generation of Burners especially designed for gas fired kilns, 19PEERS

Conference papers
Novel approach to designing lime kiln burners for the Pulp & Paper Industry. What can we learn from the Cement Industry?, 19PEERS

Novel approach to designing lime kiln burners for the Pulp & Paper Industry. What can we learn from the Cement Industry?, 19PEERS

Journal articles
Magazine articles
Open Access
Rheological characteristics of platy kaolin, TAPPI JOURNAL September 2019

ABSTRACT: Platy kaolin can provide significant value in the coating of paper and paperboard. It can be used in multiple applications and can provide benefits such as titanium dioxide (TiO2) extension, smoothness improvement, improved print gloss or ink set rates, calendering intensity reduction, and improved barrier properties. It is not a pigment that can be simply substituted for traditional hydrous kaolin without some adjustment to the coating formulation. These adjustments can be as simple as reducing solids, but may require binder changes as well. The coater setup may need to be adjusted because of the unique rheological behaviors these pigments exhibit.The unique rheological characteristics of platy kaolin are explored here. Measurements of the water retention of platy kaolin containing coatings confirm that water retention is not reduced in comparison to more blocky kaolin pigments, despite the lower coating solids at which they need to be run. This means that the rheological characteristics are the most important in understanding the runnability. An extensive analysis reveals some unique behaviors that need to be understood when utilizing these materials. Viscoelastic measurements indicate that, for this binder system, Tan d is mainly a function of solids. This may explain how weeping is initiated on a blade coater. The degree of shear thinning behaviors is investigated using the Ostwald de-Waele power law. The immobilization point was determined using the Dougherty-Krieger equation and related to the work of Weeks at the University of Maine on blade coater runnability. An indirect measure of particle shape and size synergy is also demonstrated using the Dougherty-Krieger equation parameters.

Journal articles
Magazine articles
Open Access
Flow characteristics of drag-reducing natural bamboo fiber suspensions with minimal environmental load, TAPPI Journal September 2019

ABSTRACT: The reduction of pipe friction loss by adding drag-reducing agents has attracted attention as an aid to energy conservation. Drag-reducing agents induce drag reduction (DR) effects and should have a minimal environmental load, with natural resource-saving potential. This study demonstrates bamboo fiber as a drag-reducing agent that saves natural resources and has a low environmental load. Using pressure drop measurements, we report DR with suspensions of bamboo fibers with the average diameter of 13.3 µm and aspect ratio of 98.7. The maximum DR obtained in this experiment is 43% at the concentration of 4000 ppm and pipe diameter of 30 mm; DR is affected by the Reynolds number, suspension concentration, and pipe diameter. In addition, the bamboo fibers can be easily removed from the suspensions by filtration. We found that low-environmental-load bamboo fiber has DR effects like those of other fibers; its effects are greater than those of conventional synthetic fibers and wood pulp. Furthermore, it is resistant to mechanical degradation, recoverable, and recyclable. Therefore, DR effects can be selectively obtained by adding the fibers only when DR is needed; the fibers can then be collected when DR is no longer necessary. This method might greatly expand the application range of DR agents. The results demonstrate the usefulness of bamboo fibers as DR additives.

Journal articles
Magazine articles
SetPoint: Who’s on First? What’s on Second?, Paper360º September/October 2019

SetPoint: Who’s on First? What’s on Second?, Paper360º September/October 2019

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