Mairykhsky open pit coal mine is located in Siberia, Russia. The coal type is long flame coal with an average calorific value of 5100kcal / kg. A 6.6mt/a dry coal preparation plant will be completed and put into operation in April 2019. The calorific value of the selected products will be stable above 6000kcal / kg, and all of them will be used for export sales. The dry coal preparation plant is completely free from the restriction of water source and the influence of winter alpine climate. It operates continuously and stably throughout the whole year, which not only ensures the stable users in the international market, but also improves the economic benefits of the coal mine.