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Grinding fly ash is a process used to improve the performance of fly ash in concrete. Fly ash, a byproduct of coal combustion, is ground to enhance its pozzolanic activity and particle size distribution, making it a valuable supplementary cementitious material.

Process:

Raw Material: Collected from the electrostatic precipitators of coal-fired power plants.

Grinding Equipment: Ball mills, vertical roller mills, and ultrafine mills are commonly used.

Grinding Procedure: Fly ash is fed into the mill where it is crushed and ground into fine particles. The ground fly ash is then classified to ensure uniform particle size.

Grinding fly ash significantly improves its properties, making it a crucial component in modern, sustainable construction practices.