Abstract: In order to promote the promotion and application of the new process of ultra-fine crushing of HPGR，the application of the new technology of HPGR and wind power separation in a gold mine dress⁃ ing plant was introduced. The production test showed that the power consumption of 18~0 mm gold ore crushed to 1.5~0 mm accounting for 93.55% is 6.29 kWh/t with stable operation，high output，low energy consumption and high equipment operation rate. The system can easily and flexibly adjust the particle size of the final product without changing the screen，which can realize the dynamic balance of the feeding sys⁃ tem and the grinding system with a high degree of automation. The finer products requested the higher ener⁃ gy consumption of transferring materials. Therefore，it is necessary to comprehensively demonstrate the pro⁃ cess and economic benefits in production.

Key words: gold ore, HPGR, wind power separator, the grinding system, new process