Fly ash is a fine powder recovered from coal-fired power plants that can be used as a cement replacement in concrete. It improves the strength, reduces cracking, and makes pumping concrete easier. Fly ash can also be used in blocks, bricks, and pavements. Coal-fired power plants produce large amounts of fly ash as a byproduct. Fly ash processing plants use various crushers and mills to process fly ash into fine powder that can be used in cement, tiles, blocks and other applications. Shanghai Clirik Machinery produces fly ash Raymond mills for grinding fly ash into fine powder.