METHOD FOR PREPARING CATALYST FOR USE IN HYDRO-REFINING AND METHOD FOR RECOVERING METAL

摘要

A method for preparing a catalyst, wherein a hydro-refining catalyst (a waste catalyst) which has been used in hydro-refining and is reduced in activity is heat-treated (S1) and then pulverized to give a regenerated powder (S2), the regenerated powder is classified according to the content of a metal (S3), is formed (S6), is dried (S7), and is fired (S7), to thereby provide a regenerated catalyst which has a pore volume of pores having a pore diameter of 50 to 2000 nm of 0.2 ml /g or more and has a pore volume of pores having a pore diameter not less than 2000 nm of 0.1 ml /g or more; and a method for recovering a metal, wherein a heavy oil containing vanadium and nickel in an amount of 45 wt ppm or more in terms of a total metal content is subjected to hydrogenation demetallization using the above regenerated catalyst, and then vanadium and nickel are recovered from the regenerated catalyst used (SS1). The method for preparing a catalyst allows the preparation of a regenerated catalyst having high activity from a waste catalyst, and the method for recovering a metal allows the recovery of the metal components through hydrogenation demetallization with good efficiency.