72 results about "Ammonium aluminium sulfate" patented technology

The invention discloses a water purifier and a preparation method thereof, belongs to the technical field of water purifier preparation, and also belongs to the field of solid waste treatment and use. The water purifier is prepared from a raw material, namely, a micro-spherical catalytic cracking waste catalyst of which the particle size is less than 200 microns; the waste catalyst mainly comprises silicon oxide and aluminum oxide. The preparation method specifically comprises the following steps: (1) pulping the micro-spherical catalytic cracking waste catalyst of which the particle size is less than 200 microns with water, and stirring; (2) adding sulfuric acid according to the acid concentration of 20-65% in the reaction process and a solid-to-liquid ratio of 1:(2-6); (3) adjusting the reaction temperature to 90-150 DEG C after adding the acid, and performing reaction for 1-6 hours at the temperature; (4) after completing the reaction, adding water to dilute till the volume is 2-3 times of the original volume, and performing centrifugal filtration at the temperature not lower than 90 DEG C, so as to obtain filtrate; (5) introducing ammonia water or ammonium sulfate into the filtrate, reducing the temperature to 0-60 DEG C, and performing filtering, washing and drying to obtain a granular water purifier ammonium aluminum sulfatehydrate crude product; (6) obtaining industrial ammonium aluminum sulfatehydrate after recrystallization. The micro-spherical catalytic cracking waste catalyst generated in smelting plants is adopted as the raw material to produce the water purifier, a novel product can be developed, and furthermore the solid waste treatment difficulty is solved, so that the water purifier is both economic and environment-friendly.