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



Rotary kilns are some of the largest pieces of processing equipment in the world that are utilized in many industries globally to refine raw materials into useful products.  Within the pulp and paper industry, rotary kilns have been utilized since the advent of the Kraft recovery process.  The rotary kiln has remained largely unchanged in its conceptual design.  Yet there have been significant design improvements and upgrades throughout the past century. 

Upgrades to the rotary kiln are necessary to increase capacity, reduce energy, and meet industry demands.  A unique cost cutting feature that was introduced to rotary kilns in the late 1970s and early 1980s was mounting the tire directly on the kiln shell. This took the place of the traditional method of mounting plates between the inside diameter of the tire and the outside diameter of the kiln shell, these were called filler bars.   

After decades of operation the rotary kilns that have the tire mounted directly to the kiln shell are requiring larger repairs and upgrades to continue operation.  This paper will examine the design differences, required maintenance, and upgrade and replacement options for rotary kilns with tires mounted directly on the shell. 

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

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