The noise from brick factory using duns as raw material is very severe.Among many noise sources,the hammer-crusher is the severest.

• 莱芜冶鑫建材煤矸石砖厂生产过程中噪声污染严重,现场监测诸多噪声源中,以锤式破碎机的噪声最为严重,治理难度较大;