A method for regenerating
aluminum electrolysis bath carbon waste into alternative fire
coal comprises the following steps that (1) conducting pelletization and
detoxication, wherein the
aluminum electrolysis bath carbon waste is crushed, a detoxicating agent solution is atomized and sprayed, and then pelletized detoxicated materials are obtained; (2) conducting activation, wherein a catalytic oxidant is added, homogenizing and modifying are conducted, and then the alternative fire
coal is obtained; or, the catalytic oxidant and
lime are added, water is added, stirring is conducted or rolling mixing is conducted, oxidation alkaline removal are conducted, filtering or filtering and washing are conducted,
drying is conducted, and then the alternative fire
coal is obtained; or, the catalytic oxidant,
lime and
sodium hydroxide are added, water is added, stirring is conducted or rolling mixing is conducted, oxidation aluminum removal and alkaline removal are conducted, filtering or filtering and washing are conducted,
drying is conducted, and then the alternative fire coal is obtained; or, supercritical or liquid-state
carbon dioxide is adopted for leaching
processing, the catalytic oxidant is added to carbon
dry powder for homogenizing and modifying, and then the alternative fire coal is obtained. The calorific value of the regenerated alternative fire coal is equal to that of semibituminous coal and
anthracite and is about 5000 kcal / kg on average, and the regenerated alternative fire coal can be used as alternative fire coal; and the method is simple in technology, low in
energy consumption and cost and suitable for industrialized production.