Abstract: The present disclosure discloses secondary aluminum ash for concrete and a treatment method thereof. The treatment method includes the following steps: (1) grinding the secondary aluminum ash to obtain ground secondary aluminum ash; (2) subjecting the ground secondary aluminum ash to deoxidation; (3) mixing deoxidized secondary aluminum ash with an alkali liquor, and conducting a reaction at 80° C. to 100° C. for 3 h to 10 h to obtain an intermediate system; and (4) adding calcium hydroxide and sodium hydroxide to the intermediate system, conducting a reaction at 100° C. to 200° C. and 0.1 MPa to 1.55 MPa for 2 h to 4 h, conducting solid-liquid separation, and washing a resulting solid to obtain the finished secondary aluminum ash product for concrete.

Abstract: The present disclosure discloses a method for preparing hydrogen from secondary aluminum ash, including the following steps: S1. preparing secondary aluminum ash, and subjecting a reaction device to an oxygen replacement treatment; S2. feeding the secondary aluminum ash into the reaction device, adding water, conducting a first hydrolysis reaction to obtain a first gas, and introducing the first gas into a gas collection cabinet; S3. adding calcium hydroxide and sodium hydroxide subsequently to the reaction device, conducting a second hydrolysis reaction to obtain a second gas, and introducing the second gas into the gas collection cabinet; and S4. subjecting a gas mixture in the gas collection cabinet to separation and purification to obtain hydrogen. The method is conducive to improving a hydrogen yield and reducing the toxicity of process products.