One of the promising ways of improving the efficiency of enrichment processes for economic minerals including those with different strengths is use of selective conmlinution in the preliminary stage of enrichment and in obtaining intermediate or final enrichment products.Recently in our country and abroad research has been carried out into the kinetics of comminution for two-component mineral mixtures including those with different strength characteristics [I-6].This work has developed in two main directions:-a study of the kinetics of combined comminution of minerals of different strengths with the aim of obtaining a prescribed range of size fractions for the charge going on to subsequent processing [1-2].-selective comminution of ores in order to obtain one of the final enrichment products [4,5].Results are presented in our work for a study of selective comminution of two-components mixtures in ball mills.The main factors which determine the process of selective comminution for the weak component of an ore are strength properties of the components, the ratio of component sizes, and the ratio of the energy of the grinding bodies to the energy required for breaking the particles of both components.We consider the various energy combinations with selective comminution of two-component mineral mixtures.We introduce the following notation (in J):E is the energy of grinding bodies at the instant of impact;Emax is the energy required in order to break particles of the strong component of the --S. C -maximum size;Emin is the energy required in order to break particles of the strong component of the s.c minimum size; E~? x is the energy required in order to break Particles of the weak component of the maximum size;Emin is the energy required in order to break particles of the weak component of the W.C minimum size.
The article presents the results of the development and testing of cost management methods in agricultural organizations. The purpose of the activity of any organization that has set itself the task of extracting profit is its growth and increasing the efficiency of its activities. As a rule, all organizations strive to maximize their profits while minimizing the costs incurred. In modern economic conditions, such an approach is possible only with a properly constructed effective cost management system. Rational use of available resources by organizations of the agro-industrial complex with proper cost management will allow organizations to be competitive in the market and carry out their activities in the foreseeable future. The subject of the study is the cost management accounting system, the object of the organization of the agro-industrial complex of the Stavropol Territory. The information base was the forms of specialized reporting of agricultural organizations of the Stavropol Territory. The scientific novelty of the research consists in the development of a methodology for the cost management system in the agro-industrial complex organizations of the Stavropol Territory.
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