Abstract: The high concentration cemented filling with coarse tailings of +37 micron has been maturely applied in a gold mine. In order to maximize the use of tailings， reduce the fine tailings at -37 micron stored in tailings reservoir， lower the mining cost of the whole mine and eliminate potential safety hazards， the comprehensive performance of the full tailings filling paste was tested in this gold mine. The test results showed that the comprehensive index of full tailings paste filling is higher than that of high-concentration classified tailings filling. The slurry slump， expansion， yield stress， viscosity and bleeding rate of the paste with 76% mass concentration are the best， which can meet the requirements of mining methods. According to the actual production of the mine， the pressure-filtrated full tailings paste filling technology scheme is put forward.

Key words: Mining method with backfilling, Pressure-filtrated tailings, Full tailing paste, Mass concentration