METHOD OF REPROCESSING OF POTASSIUM ORES Russian patent published in 2005 - IPC

FIELD: mining industry; methods of reprocessing of potassium ores.

SUBSTANCE: the invention is pertaining to the different production processes, in particular to the methods of materials sorting by means of devices put in action automatically as a result of measuring of their radioactivity and may be used for reprocessing potassium ores. The technical result is a decreased share of a rock salt in reprocessed potassium ores. Before lifting the ore up to the surface exercise its radiometric assorting, for what the mined rock mass is fed by a conveyer into the zone of gauging, where by the radiometric instrumentation measure the value of a gamma radiation and according to it estimate concentration in it of potassium chloride and in the results of the measurements form the signals making control of the executive mechanisms operation. The potassium ore is delivered into the all-mine hopper and the rock salt with the share of potassium chloride of no more than 5 % with the help of the plough pushers deliver to the auxiliary hopper. Further the ore from the all-mine hopper lift up onto the surface for the subsequent reprocessing, and the rock salt received as a result of sorting from the auxiliary hopper send to fill the waste stopings.

EFFECT: the invention ensures a decreased share of a rock salt in the reprocessed potassium ores.