WEAR IN PNEUMATIC TRANSPORT UNDER HOT REDUCING ATMOSPHERES

Samples of steel pipes and pipe segments were subject to multiple impa cts by direct reduced iron pellets, exposed to hydrogen and carbon mon oxide gas mixtures, at temperatures ranging from 300 to 600 degrees C. Material loss and microscopic observations were used to evaluate wear . The results are useful for material selection and preventative maint enance planning. Erosion wear was the important mechanism. Comparison between laboratory test and pilot plant was made and their analysis us ed to provide predictions of wear rates. (C) 1998 Elsevier Science S.A .