August 2020

TABLE OF CONTENTS VOL. 19 NO. 8

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383 EDITORIAL

Risks and rewards of research during a pandemic Monica Shaw

387 RECOVERY CYCLE

Mill experience of calcium carbonate scale formation in green liquor pipelines Alisha Giglio, Honghi Tran, Maria Bj?rk, Rickard Wadsborn, Hal Lagimodiere, and Mo?se Dion

401 RECOVERY CYCLE

Modeling of the energy of a smelt-water explosion in the recovery boiler dissolving tank Eric Jin, Malcolm MacKenzie, Steve Osborne, and Honghi Tran

413 TECHNICAL BRIEF: TEST METHODS

On-machine visible dirt measurement on moving sheets and the relationships to standard laboratory methods David Trepanier and Roland J. Trepanier 419 TECHNICAL BRIEF: TEST METHODS

Relating bending stiffness measurements across various free span lengths Douglas Cash and Benjamin Frank

? COVER CREDIT:The methods and theories from the study on smelt-water explosion in the recovery boiler dissolving tank from researchers Jin et al. (p. 401) shine new light on this topic for the industry to improve mill operations safety. Shown here is a schematic of a modern chemical recovery boiler (longflow economizer, multi-levels of combustion air, and dual-sloped floor) with its dissolving tank. Image courtesy of The Babcock & Wilcox Company.

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