SYSTEMATIZATION OF METHODS TO REDUCE LOSSES OF FINE ORE DURING UNDERGROUND MINING

Abstract

The article is concerned with the problem of losses of mineral raw materials during underground mining because of ore overgrinding. In accordance with the principles of rational nature management and extraction completeness of reserves from the subsoil, significant losses because of overgrinding of non-metallic and metallic ores are unacceptable.
In the furtherance of this goal, it is necessary to perform a set of tasks, including a generalization of existing methods to reduce the loss of fine ore and the identification of specific factors determining the efficiency of their application.
After analysis we identified and characterized the main methods of reducing the loss of ore fines, established the main and specific conditions and factors acting during their application. We offer a systematization of these methods, which takes into
account the class of the applied mining system, determining the state of the stoping.
The classifying feature in the proposed systematization is the class of the used development system, which determines the state of the sloping spaceduring and after the excavation of the main reserves of the block. As a grouping feature, we propose the sequence of implementation of methods for reducing losses relative to the cleaning excavation.
Specific methods within the framework of systematization are private options.
The development of an appropriate methodological apparatus based on the use of the proposed systematization will reveal promising directions in the creation of technologies and methods for reducing damage from fine fractions during underground mining, which will further facilitate the adoption of strategic decisions at the design stage of the mining system.