作者：XU Yanqing;GENG Kerning;LI Hongxia;

作者单位：University of Science and Technology Beijing

刊名：China's Refractories

ISSN：1004-4493

出版年：2006-01-05

卷：15

期：1

起页：15

止页：20

分类号：TQ175

语种：英文

关键词：High chrome brick;Gasifier;Micro-structure;Corrosion;

内容简介

Research was focused on slag corrosion mechanism of high chrome bricks used for different types of gasifier by comparing the structure of high chrome bricks for petroleum coke gasifier and water-coal slurry gasifier with slag corroded testing brick and water coal slurry gasifier through Scanning Electron Microscope (SEM) examination and X-ray diffraction. Results show that for high chrome brick used for petroleum coke gasifier, corrosion is mainly caused by Cr_2O_3 in the brick and V_2O_5 in molten slag and liquid phase generation at low temperature; for high chrome brick used for water-coal slurry gasifier, corrosion is caused by dissolution of Cr_2O_3 in molten slag and corrosion of ZrO_2. For LIRR-HK95 brick, it performs better petroleum coke corrosion resistance than the others due to the optimal composition and structure.