Insights into critical metal element migration and enrichment in coal gasification
Juan Cai, Boyan Zhang, Jiatao Dang, Yun‐Peng Zhao, Dingcheng Liang, Qiang Xie, Maohong Fan, Jinchang Liu
Abstract
. However, lithium is mainly associated with clay minerals in coal slag. Meanwhile, gallium exhibits a relatively high bonding affinity for aluminates and silicates in the slag when the gasification temperature exceeds 1400 °C. By contrast, germanium and indium are demonstrated to have low affinity for aluminates and silicates in coal gasification slag. Germanium has more potential to combine with sulfur than aluminates and silicates, as revealed through enrichment factor analysis. Indium displays a complicated occurrence form in coal slag, demonstrating a better bonding affinity for oxygen and hydrogen in high-temperature gasification.
Topics & Concepts
Coal gasificationCoalExtraction (chemistry)MetalSlag (welding)Materials scienceMetallurgyWaste managementChemistryEngineeringChromatographyExtraction and Separation ProcessesCoal and Its By-productsMetal Extraction and Bioleaching