Date of Award

Spring 1999

Degree Type

Thesis - Restricted

Degree Name

Master of Science (MS)

Department

Mechanical and Industrial Engineering

First Advisor

Cariapa, Virkam

Second Advisor

Wenzel, Thomas

Third Advisor

Moussa, Bechir

Abstract

Drag conveyors are used frequently to convey cement clinker. Even though drag conveyors have been in use for decades, little research has been performed to understand their characteristics and the way they behave in certain applications; instead experience was used to find answers to problems. One of the areas that the experience is taken for granted is the analysis of the forces on the chain and the material height that can be reliably conveyed. In this thesis the basics of bulk material handling is explained. Using this information, a testing program is constructed that will provide insights to following issues: - Forces formed during material conveying at different material heights. - Material size effect on these force readings. - Exploring where shear takes place for each material size, and using this information to determine what material height can be utilized as a basis for design. To eliminate scaling and modeling issues, a real- size drag conveyor is tested with typical cement clinker that is obtained from a cement plant. Using four different material sizes, the tests are performed, and results compared.

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