Method of Sinter Pot Test of Evaluation for Dioxins Formation on Iron Ore Sintering

Abstract

The new law concerning dioxins is promulgated in Japan, the iron ore sintering plants enforcing the suppression of dioxins emission. The present paper reports a study on the method and conditions of sinter pot test to evaluate dioxins and Cl content in exhaust gas. Main results obtained are as bellow. Cl is partly trapped on wind box and outlet tube of sinter pot apparatus, but dioxin is not trapped. Repeatability of measured dioxin concentration is as same as ones of NOx and SOx concentration in sinter pot test under the condition of constant flow rate of exhaust gas. Dioxins concentration in sinter pot were in good agreement with one in actual plant. These results conclude that sinter pot test is effective to evaluate dioxins.