Kantemirov V. D., Titov r. S. – Institute of Mining, the Ural Branch of RAS, Ekaterinburg, the Russian Federation.
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The article describes methodological approaches to advanced mineral loss accounting and regulation during opencast
development of deposits with complex mining and geological conditions. As an example, mineral loss indicators are
introduced when developing Kostanoksky plot of Chanvin deposit of limestone used for the production of caustic soda.
Actual loss level is determined, exceeding 30% of raw materials total production. The main reasons are introduced of
advanced loss of limestone in comparison with in the project loss. It has been stated that with a detailed exploration
of the massif of limestone, karst zones and zone with a higher content of clay bedded in the form of veins in zones of
higher rock jointing, have not been identified. As the result of blasting operations, mixing of karsted and clayed areas,
and pure limestone takes place, together with its pollution up to the values exceeding the allowable ones; it leads to loss
in the balance reserves of minerals during extraction. The article gives recommendations over the calculation of the level
of loss when developing complex faces, which are characterized by rock intermittency with productive layer of limestone
and karst zones.
Key words: limestone; production loss; Chanvin deposit of limestone; clogging; dilution; karst zones; loss regulation.
REFERENCES
1. Kudriashov A. I., Fomin V. I., Kolesnikov V. P. Chan'vinskoe mestorozhdenie izvestniakov [Chanvin deposit of
limestone]. Perm, Tipografiia kuptsa Tarasova Publ., 1999. 82 p.
2. All-Union norms of technological design of non-metallic building materials industry enterprises (ONTP 18-85).
Edited by Soiuzgipronerud, VNIPIIstromsyr'e, and NIPIOTstrom. Leningrad, Stroiizdat Publ., 1988. 46 p.