AGAPOVSKY DEPOSIT

Agapovsky deposit

AGAPOVSKY DEPOSIT of the fluxing limestones and dolomites is located in the Agapovsky district of the Chelyabinsk oblast, RSFSR (Russian Federation), 12 kilometres from the Magnitogorsk city. It is developed since 1931 by the Agapovsky mining administration, and since 1940, together with the Lisiyegorsk dolomite deposit.

The deposits are the part of the stripe of the carbonate rocks of the Kizilsky suite of the Viséan stage of the Lower Carboniferous at the eastern limb of the Agapovsky syncline. The dip of the strata of the minerals is of the slight inclination, the angle is 18-35 degress, and up to 45-65 degrees in several places. The thickness of the carbonate rocks is 1000-1100 metres. The limestones are karsted from the surface, and are overlaid by the loose sediments with the thickness of up to 25 metres. The average content of CaO in the limestones is 51.8%, and of MgO is 3.75%. The dolomite deposition has the lenticular shape with the vertical thickness of 186 metres. The average content of MgO in the dolomites is 19.13%, of SiO2 is 0.17%.

The deposits are developed by the open pit method with the usage of the blasting. The height of the banks is 10-15 metres, the depth of the limestone open pit is 28 metres, the depth of the dolomite open pit is 52 metres (1981). The main mining equipment is: the drilling rigs, the excavators, and the railway transport. The annual extraction (1981) is 4,513 thousand tonnes of limestone, 961 thousand tonnes of dolomite. The crushed limestone of the 10-55 millimetre fraction is used in the open-hearth furnace industry, of the 10-80 millimetres fraction is used in the sintering industry, of the 55-80 millimetres fraction is burned into the quicklime; the crushed dolomite of the 10-40 millimetres fraction is used in the open-hearth furnace industry, of the 0-10 millimetres fraction is used in the sintering industry, of the 40-80 millimetres fraction is baked and used as the refractory material. In order to protect the environment, the top layer of the soil is removed during the development of the new sites, and the open pit waters are partially used for the industrial purposes and in the greenhouses of the combine. The mealy dolomites are stored into the temporary waste dumps, and the waste gases from the baking factory are cleaned.

The main consumers of the production are the Magnitogorsk metallurgy combine, and the Sokolovsko-Sarbaisky benefication combine.