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球磨机是电厂主要噪声源之一，其噪声强度可达107dB（A），噪声特性为中、高频稳态噪声，严重危害工人身心健康。我们采取对整机加隔声室的治理措施，效果显著。现将球磨机加隔声室后的效果分析如下：1评价方法采用国产ND2型精密声级计（经中国计量管理科学研究院校正），在离?
Ball mill is one of the main noise sources in power plant. Its noise intensity is up to 107dB (A). The noise characteristics are medium and high frequency steady state noise, which seriously endangers the physical and mental health of workers. We take the whole room plus noise control measures, the effect is significant. Ball mill now plus the sound chamber after the effect is analyzed as follows: 1 evaluation method using domestic ND2-type precision sound level meter (by China Institute of Metrology Management correction)