METHOD FOR HYDRAULIC MINING OF MINERALS FROM PRODUCTIVE HORIZONS Russian patent published in 1997 - IPC

FIELD: mining industry. SUBSTANCE: this can be in development of kimberlite pipes. According to method, productive horizon is opened by hydraulic producing well and mining is performed layer-by-layer in downward succession. Rock of layer is treated by solution of reagent with solving of cementing calcite and releasing of gas which is utilized for displacing used reagent solution through slurry-discharge pipe string. Then, loosened layer is washed out by pressure-forced stream. In addition, compressed air can be injected into well for displacing used solution. EFFECT: high efficiency. 1 cl, 1 dwg