Method for producing relating to industrial mass production of high-purity artificial zeolite
AssigneeKazuhiro Nakanishi
InventorMitsuru Kubota
Life of this patent
Estimating the term…
Abstract
A high-purity artificial zeolite is industrially mass produced by carrying out osmosis treatment of fly ash in an alkaline aqueous solution, subsequently carrying out the osmosis treatment again with an acidic aqueous solution of pH 1.0 or less obtained by adding acid to the osmotic aqueous solution of fly ash, then performing solid-liquid separation while water wash and dewatering in a centrifuge, thereby synthesizing a starting composition, and performing hydrothermal reaction treatment to this starting composition.
Claims6
A method for producing an artificial zeolite in which a high-purity artificial zeolite is industrially mass produced, the method comprising carrying out soaking treatment of fly ash in an alkaline aqueous solution at a temperature of 5 to 25° C. for 1 to 48 hours, subsequently carrying out a second soaking treatment with an acidic aqueous solution of pH 1.0 or less by adding acid to the soaking alkaline aqueous solution containing fly ash at a temperature of 5 to 25° C. for 1 to 48 hours, then performing solid-liquid separation while water washing and dewatering in a centrifuge, thereby synthesizing a starting composition, and performing hydrothermal reaction treatment to the starting composition.
Dependencies are inferred from the claim text.