VNII Galurgy Stock Co., St. Petersburg, Russia:

V. V. Knyazev, Engineer of the 1-st Category, vadim.vl.knyazev@gmail.com
Yu. A. Komarov, Leading Engineer

Recently, in the field of mining and processing of potash ores there is a growing attention to activities aimed at minimizing the impact of waste on the environment, the protection of the environment from pollution by waste by optimizing their formation and methods of disposal. Issues related to the development and implementation of new technologies to reduce the growth of the area used for waste disposal, as well as reduce the amount of excess leaches and industrial effluents are of particular relevance for the potash plants. There are two types of storage — dry and hydraulic aggradation. Transportation of salt waste from concentrator to the salt piles is carried out directly by the conveying. Stacking equipment at the end of the conveyor branch consists of the intermediate conveyors and stacker (conveyor) of belt telescopic type. Storage by dry piling is carried out by a free-unloading of salt wastes from stacker onto the slope of the previously formed salt massif. This article is devoted to issues of piling during the development of potash mines. There is provided general information on the objects for pile management of potash plants. It is shown the chemical composition and size distribution of waste. There are examined the types of technical constructions erected in the conduct of work on the piles of potash deposits. There are presented the examples of the used process equipment. The existing methods of placing of the salt waste are examined and compared. It is made the analysis of the environmental aspects of waste disposal of concentration plants at potash facilities. There is presented and justified the new technology of salt pile without forming separate slime storage.

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