Optimizing continuous miner scrubbers for dust control in high coal seams.
Jayaraman-NI; Jankowski-RA; Whitehead-KL
New Technology in Mining Health & Safety: Proceedings of the Symposium held at the SME Annual Meeting, Phoenix, Arizona, February 24-27, 1992. Khair AW, ed., Littleton, CO: Society for Mining, Metallurgy, and Exploration, 1992 Feb; :193-205
Most continuous miner sections utilizing flooded-bed scrubbers also use blowing face ventilation. Blowing ventilation, however, interferes with dust capture and minimizes scrubber effectiveness. To enhance the efficiency of the scrubber system and reduce dust concentrations, the U.S. Bureau of Mines tested various combinations of operating parameters. Experiments for system efficiency took place in a full scale model mine at 3.05-M roof height. In general, higher values for scrubber and face airflows resulted in lower dust concentrations. In addition, optimum dust controls would include a face ventilation to scrubber airflow ratio of 1. When the airflow ratio was either less than or greater than 1, the dust levels in the return and at the operator locations increased. No single dust control technique was the most effective one at all locations because of mutual interaction among techniques.
Mining-industry; Underground-mining; Coal-mining; Dust-control; Dust-control-equipment; Engineering-controls; Ventilation; Ventilation-systems
OP; Conference/Symposia Proceedings
New Technology in Mining Health & Safety: Proceedings of the Symposium held at the SME Annual Meeting, Phoenix, Arizona, February 24-27, 1992