Thermodynamic study on the carbothermal nitridation synthesis of silicon nitride using silicon kerf loss

Novel Reaction Media of Na2CO3–CaO for Silicon Extraction and Aluminum Removal from Diamond Wire Saw Silicon Powder by Roasting–Smelting Process

“…17 After many studies, the oxidation phenomenon of ultrafine silicon particles in DWSSP was widely recognized for silicon recovery. 18 In the authors' previous research, the amorphous SiO 2 layer covered in silicon matrix particle surface and the Si core-SiO 2 shell structure were confirmed, and the amorphous SiO 2 evolution was revealed. 17,19 The oxidation characteristic of silicon particles in DWSSP was also analyzed.…”

“…These methods mainly included the hydrobromination chemical approach with HBr, carbon elimination by furnace aerosol reactor method, hydrochloric acid leaching for aluminum removal, sulfuric acid leaching for iron removal, carbothermal reduction for silicon recovery in the electric arc furnace, slag treatment for boron removal and silicon extraction, , ultrafine silicon powder smelting with laser-assisted granulation, induction furnace melting with slag treatment for silicon recovery, and vacuum carbothermal reduction for silicon dioxide decomposition . After many studies, the oxidation phenomenon of ultrafine silicon particles in DWSSP was widely recognized for silicon recovery . In the authors’ previous research, the amorphous SiO 2 layer covered in silicon matrix particle surface and the Si core-SiO 2 shell structure were confirmed, and the amorphous SiO 2 evolution was revealed. , The oxidation characteristic of silicon particles in DWSSP was also analyzed .…”