| 摘要 |
PROBLEM TO BE SOLVED: To recycle useful components in high purity.SOLUTION: A method for recycling carbon containing neutral/acidic refractory includes: a grinding process (Step S4) for grinding used carbon containing neutral/acid refractory, an acid treatment process (Step S6) for stirring ground product obtained by the grinding process together with acid solution of pH 3.0 or less and 40°C or above, a solid-liquid separation process (Step S7) for solid-liquid separating the acid solution after the acid treatment process to residue and a solution, and a reuse process (Step S10 and S11) for reusing a recovered material that is obtained by water-washing and drying the residues obtained by the solid-liquid separation process and reusing the resulyant material as a refractory raw material. |
