目前化学工业上生产氢氟酸的大型转炉一般内径为1.6m,壁厚40mm,长为20m,材料为20g,外面包扎保温物质。在反应生成过程中,炉体边旋转,边受热风加热,其化学反应式为CaF_2+H_2SO_4→2HF+Ca_2SO_4。由于参加的反应物和生成物对炉体内壁都有强烈腐蚀作用,年腐蚀量达8～12mm,所以转炉一般 At present, the large-scale converter for producing hydrofluoric acid in the chemical industry generally has an inner diameter of 1.6m, a wall thickness of 40mm, a length of 20m, a material of 20g and a thermal insulation material wrapped around the outside. During the reaction, the furnace body rotates while heated by hot air, and the chemical reaction formula is CaF 2 + H 2 SO 4 → 2HF + Ca 2 SO 4. Due to participate in the reactants and products on the furnace wall has a strong corrosive effect, the annual amount of corrosion of 8 ~ 12mm, so the general converter