Method for rapidly preparing Na-X and Na-A molecular sieves by using fly ash as raw material

The invention relates to a method for rapidly preparing Na-X and Na-A molecular sieves by taking fly ash as a raw material. The method is characterized by comprising the following steps of: carrying out acid pickling and high-temperature alkali activation treatment on fly ash to make the treated fly ash serve as a silicon source and an aluminum source for later use, weighing a solvent, the treated fly ash, a supplementary aluminum source, a sodium source and a Na-X seed crystal, adding the fly ash and the sodium source into one part of the solvent and uniformly stirring an obtained mixture, adding the supplementary aluminum source into the other part of the solvent and uniformly stirring an obtained mixture; mixing the two mixtures, adding the Na-X seed crystal, violently stirring an obtained mixture, putting the mixture into a reaction kettle, aging the mixture for a period of time, and crystallizing the mixture in a drying oven for a period of time; and finally performing chilling, centrifuging, washing and