How to remove free carbon residue from green silicon carbide powder?
Carbon residue in green silicon carbide powder negatively impacts grinding performance. Especially when preparing grinding slurry with GC powder 0.5-1um, free carbon affects the viscosity of the silicon carbide grinding slurry, causing abrasive particles to agglomerate, hindering uniform grinding. Therefore, removing free carbon residue from green silicon carbide micro powder is crucial.
In actual production, several key production stages need to be controlled:
1. Use high-quality, first-grade green silicon carbide blocks as raw materials. Avoid raw materials with high impurity content.
2. Ensure thorough cleaning during acid and alkali treatment and water washing & precipitation processes.
3. Strictly control the production environment during sedimentation, drying, and sieving processes to prevent dust accumulation.
