FCC (Fluid Catalytic Cracking) waste catalyst doped autoclaved flyash-lime brick and making method thereof

Abstract

The invention discloses a method for manufacturing an autoclaved flyash-lime brick by using an FCC (Fluid Catalytic Cracking) waste catalyst. The method comprises the following step: by taking the FCC waste catalyst, coal ash, thiourea filter residues (Ca(OH)2) as main raw materials, doping a proper amount of aggregate, performing raw material pretreatment, pressing molding and high-temperature high-voltage steam curing, thereby obtaining the autoclaved flyash-lime brick. The autoclaved flyash-lime brick can replace conventional clay red bricks, and is a novel wall body material which is greatly developed and applied in China. The autoclaved flyash-lime brick is manufactured by using the FCC waste catalyst safely and efficiently. Not only are local solid-waste treatment problems solved, but also farmlands can be saved, pollution can be reduced, and the environment can be protected; as a great deal of industrial waste residues can be utilized, the autoclaved flyash-lime brick is good in durability and relatively high in wall body strength, and has great significances of environment protection and waste utilization.

Description

technical field

[0001] The invention belongs to the field of materials, and in particular relates to a method for preparing autoclaved fly ash bricks from FCC waste catalysts.

[0002] technical background

[0003] Autoclaved fly ash bricks, referred to as fly ash bricks, are made of fly ash and thiourea filter residue (Ca(OH) 2 ) as the main raw material, mixed with an appropriate amount of aggregate, and solid bricks made of raw material preparation, compression molding, and high-pressure steam curing. It is suitable for the interior and exterior walls of various civil buildings, public buildings, and industrial plants, as well as the foundation of houses. . It is a product that replaces traditional fired clay bricks.

[0004] FCC spent catalyst is a hazardous waste produced in catalytic cracking, the most important secondary process in the oil refining industry. With the heavy and inferior quality of petroleum resources, the quality of raw materials for catalytic cracki...