The Sintering Test, an Index to Ash-Fouling Tendency

Abstract
This paper describes a laboratory test for determining the tendency of an ash to form hard, bonded deposits in the convection-tube banks of coal-fired boilers. The sintering test, as it is called, has been applied to several phases of the over-all problem of ash deposition including (a) the evaluation of factors in boiler operation, (b) the classification of coal according to its ash-fouling characteristics, and (c) the selection and testing of additives for inhibiting or preventing ash fouling. The results of these studies are presented herein.

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