Method for removing nitrogen from aluminum ash through acid treatment in normal-temperature environment

• Main Authors: GUO BIYU, ZHU YUE, LI CHANG, YU YANGCHENG, ZHU GUANREN, FU HUAILIANG
• Format: Patent
• Language: Chinese; English
• Published: 26.04.2024
• Subjects: DISPOSAL OF SOLID WASTE; PERFORMING OPERATIONS; RECLAMATION OF CONTAMINED SOIL SOIL; TRANSPORTING

The invention discloses a method for removing nitrogen through acid treatment of aluminum ash in a normal-temperature environment, and relates to the technical field of harmless treatment of hazardous waste of the aluminum ash, the treatment method comprises the following steps: putting the aluminum ash into a ball mill, adding a grinding aid, and grinding into solid particles which can pass through a 300-mesh sieve; putting the solid particles into a reaction container, and introducing carbon dioxide to remove nitrogen; and adding citric acid into the reaction product to remove impurities, and finally putting the impurity-removed reaction product into hydrochloric acid to stir and react to obtain the aluminum chloride solution. According to the treatment method, grinding and the acid solution can be combined, high efficiency of nitrogen removal of the aluminum ash can be achieved, the pollution degree to the environment can be reduced, the aluminum element in the aluminum ash is recycled, and the overall ben