Role of anthracite coal in reduction of copper oxide during reactive milling with magnesium

摘要

The reduction of Cu_2O from CuO by reactive milling method of Mg and crystallitic carbon wasrninvestigated. Crystallitic carbon was prepared from anthracite coal by demineralization with alkalinernmelting and acid rinsing, and carbonization at 1500℃ without oxygen for 1.0 h. The morphology andrncrystalline structure of Cu_2O after reduction were determined by SEM, EDS, TEM and XRD analysis.rnThe results showed that the particles size from 1.5 h of milling was at the range of 50-100 nm. Therncrystallite size for Cu_2O was 15.4 nm from XRD analysis. The relative amount of Cu_2O was 24.79 wt.%rnfrom XRD data refinement. The crystallitic carbon and Mg were all in amorphous state after milling. Inrnreduction, the Mg played a role of reducing agent, whilst crystallitic carbon acted as a dispersant.