兖州矿区选煤厂噪声综合治理方案的研究

In this paper，comprehensive treatment project about the noise pollution of each part in coal preparation plant was studied , and compares the dB values before and after the noise control . Noise polution was treated in blower room, lead, crusher, chute, duty room and workshop respectively. Noise monitoring results show that the most serious and governance effect of the most obvious parts are the chute and isolation booth, the dB value of the chutes could be reduced 15dB after treatment ,and all of them were below 90dB and up to a standard. labelling low noise material in chute wall, welding the flap in flange connection section chute and pasting or coating the damping measures such as coal perfectly within the outer wall surface in chute suited to handle the noise pollution. After setting up insulation booth, dB difference value between the internal and external could achieve 13dB , the indoor noise value was up to standards.