文献类型：期刊文献

英文题名：Effects of Phosphate Additives on the Interaction between High-Chrome Refractory Materials and Slags with Varied Na2o Contents

作者：Liu, Kuiyu[1]; Guo, Qinghua[1]; Gong, Yan[1]; Xia, Yi[1]; Wang, Xingjun[1]; Si, Yaochen[4]; Li, Hongxia[2]; Song, Xudong[3]; Yu, Guangsuo[1,3]

机构：[1] Institute of Clean Coal Technology, East China University of Science and Technology, Shanghai, 200237, China; [2] State Key Laboratory of Advanced Refractories, Sinosteel Luoyang Institute of Refractories Research Co., Ltd., Henan, Luoyang, 471039, China; [3] State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan, 750021, China; [4] University of Science and Technology, Beijing, China

年份：2023

外文期刊名：SSRN

收录：EI(收录号：20230418113)

语种：英文

外文关键词：Additives - Corrosion resistance - Refractory materials - Scanning electron microscopy - Slags - Wetting

摘要：Refractory material failure affects the safe and stable operation of a gasifier. This study investigated the impact of phosphate additives on the corrosion resistance of high-chrome refractory materials to high-calcium slags with varied Na2O contents, as well as the wetting mechanisms. The methodology employed a combination of sessile drop tests, scanning electron microscopy, Raman spectroscopy, and thermodynamic calculations to unveil the mechanisms governing the wetting, spreading, and infiltration behavior at the slag-refractory interface. The findings emphasized a substantial enhancement in resistance to slag wetting and infiltration due to the addition of phosphate. Furthermore, thermodynamic calculations provided insights into the intricate interactions between the slags and two refractory materials, revealing the formation of a liquid phase enriched with CaO, Na2O, and P2O5. This liquid phase played a pivotal role in improving the severity of slag penetration and corrosion. However, an increased presence of liquid phases was observed after the interaction between high-chrome refractory with phosphate additives and slag containing over 10.0% Na2O, indicating an elevated level of corrosion and penetration. ? 2023, The Authors. All rights reserved.