摘要
随着煤炭行业机械化和采掘速度的加快,工作面粉尘浓度越来越大,威胁着工人的安全。通过分析磁化降尘机理和磁化表面活性剂溶液降尘机理,以山西省某矿为例,确定了适合该矿综采工作面的最佳表面活性剂为LDLC表面活性剂及最佳浓度为0.1%,以及最佳磁化强度1000 m T和最佳磁化时间60 s,并根据结果设计磁化管路和添加装置。该措施在该矿回采工作面进行现场试验,使该工作面的全尘浓度降尘效果比常规措施提高72%左右,PM2.5降尘效果提高60%左右,有效改善了工作面的作业环境。
With the mechanization and the increased speed of the mining, the dust concentration in working faces gets more and more higher, and becomes a big threat to the health of the workers. In this paper, the dust-reduction mechanisms of the magnetization and the surfactant are analyzed. The parameters of the magnetization and the surfactant are determined by experiments based on the coal samples of a coal mine in Shanxi province, and it is shown that the best surfactant is LDLC, the best concentration is 0.1%, the best duration of magnetization is 60 seconds and the best strength of magnetization is 1000 m T. At the same time, the magnetic tube and the accessory equipment are designed. And the field test shows that after the test, the concentration of the total dust is reduced to72% as compared to the usual dust-reduction measure, and the dusts of 2.5 μm are reduced to about 60%, so the environment of the working face is significantly improved.
出处
《科技导报》
CAS
CSCD
北大核心
2015年第4期44-48,共5页
Science & Technology Review
基金
中央高校基本科研业务费专项(2009KZ03)
关键词
降尘
磁化
表面活性剂
工作面
dust-reduction
magnetization
surfactant
working face
