| 摘要 |
PURPOSE: To obtain a porous ceramic sintered compact excellent in chemical durability, heat resistance and rigidity, etc., by selecting sintered compact of a composition containing each prescribed amount of a waste catalyst which was used for fluidized bed catalytic cracking and a binder. CONSTITUTION: A sintered compact of a composition containing 20-90wt.% of a waste catalyst (e.g. silica-alumina waste catalyst) which was used for fluidized bed catalytic cracking, 10-80 pts.wt. of a binder (e.g. kibushi powder soil) and as necessary, 5-25wt.% of a sintering accelerator (e.g. limestone) are selected. The sintered compact is obtained by forming a mixture obtained by mixing a waste catalyst for fluidized bed catalytic cracking, as necessary, previously calcined at 900-1450 deg.C with a binder and water, drying the formed material and baking the formed material at 1000-1500 deg.C. |
