Gcp Applied Technologies Inc.

Hubbell Limited

Jeffrey Thomas

David A Rhein

Josephine H Cheung

Denise A Silva

David F Myers

Mark F Roberts

Nathan A Tregger

Lawrence R Roberts

Elizabeth Burns

Elise Berodier

Riccardo Stoppa

Dorota Kazmierczak

Richard Sibbick

Li Zhang

Joshua Detellis

Leslie J Buzzell

Wee Fuk Lai

Ernie Rocha

Keith Marsay

Thais Araujo

Byong-Wa Chun

Hatim Taj

The present invention provides a method and system for manufacturing cement wherein ground particles of cement and calcium sulfate are subjected to infrared sensors, laser sensors, or both, so that emanated, irradiated, transmitted, and/or absorbed energy having wavelengths principally within the range of 700 nanometers to 1 millimeter can be monitored and compared to stored data previously obtained from ground cement and sulfate particles and preferably correlated with stored strength, calorimetric, or other data values, such that adjustments can be made to the mill processing conditions, such as the form or amounts of calcium sulfate (e.g., gypsum, plaster, anhydride), or cement additive levels. The strength and other properties of cement can be thus adjusted, and its quality can be more uniform.

Cement production

Disclosed are exemplary method and system for manufacturing cement in a vertical roller mill (VRM) using humidity sensor readings. This enables adjustment of operational variables such as material feed, water, grinding additives, air flow, temperature, and their combinations. Exemplary embodiments allow manufacturers to predict and to improve cement properties, such as strength and setting time, by monitoring and managing humidity of air in the VRM and/or its air flow system.

Moisture management in vertical roller mills

A method for grinding a solid in a vertical roller mill (VRM), comprising grinding at least one solid in the presence of a grinding stabilizing additive, wherein the grinding stabilizing additive comprises an alkanol amino acid compound or a disodium or dipotassium salt thereof having the structural formula (I): The definitions of variables R, R, and Rare provided herein.

Grinding stabilizing additive for vertical roller mills

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Winchester, MA, United States of America

Jeffrey Thomas