Rock coal was used as raw material and Na2CO3 and CaCO3 were used as composite additive, vanadium was extracted via soaking with acidity solution after mixture was baked.

• 摘要以石煤为原料，加入碳酸钠和碳酸钙组成的复合添加剂，经焙烧、酸浸后提取石煤中的钒。