Experiment and Research on Foam Dust Control Technology in Mine Heading Roadway

In order to reduce the dust density in the mine roadway heading face, the foam dust control mechanism and the mixing ratio requirements of the dust re mover were analyzed and the simulation model experiments were applied to study and develop the structure and performances of the foam generator.The experiments showed that under the certain conditions of the foaming, the optimum relationship between the foaming quantity, foaming pressure and liquid supply quantity was found with the experiment.Under the certain liquid supply quantity, the foaming quantity would be increased with the foaming pressure increased and the optimum air pressure would be 0.40.5 MPa.Under the certain foaming pressure, the foaming quantity would be increased with the liquid supply quantity increased.When the supply value reac hed to the certain value, the foaming quantity would not be increased.At this moment, when the liquid supply quantity was still increased, the residual liquid in the foami ng generator would be increased.The site experiments showed that the dust contral efficiency of the dust control technology would be good, the full dust collected rate would be over 90% and the dust density in the mine roadway could be effectively reduced.