Open AccessStudy on prevention and control technology of mineral dust discharged from high and deep chute
Author(s) -
Changfu Zou
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/781/5/052029
Subject(s) - dust control , suction , environmental science , extraction (chemistry) , environmental engineering , pollution , mining engineering , waste management , chemistry , engineering , mechanical engineering , ecology , chromatography , biology
Based on the production process characteristics of the deep pass in Xiadian Gold Mine, a pass unloading model was established, and the dust return characteristics of pass unloading operations were simulated and studied. The dust production law of pass unloading was tested and analyzed, and it was concluded that the transient conditions of deep pass unloading are different According to the distribution of the concentration of each section at the moment, according to the flow field distribution law of the discharge port, a blow-suction airtight dust extraction and purification treatment measure is proposed, which realizes the effective dust control of the discharge surface of the chute and improves the dust extraction efficiency of the dust collector After the on-site supporting research and treatment, the total dust concentration of the chute unloading operation was reduced from 378.3mg/m 3 to 5mg/m 3 , the dust reduction efficiency reached 98.7%, and the respirable dust concentration was reduced from 133.3mg/m 3 to 3mg/m 3 . The efficiency is 97.7%, and the dust reduction effect is good. It solves the problem of the pollution of mineral dust unloading in the deep pass, and provides a basic basis for the treatment of metal mines.