Abstract
The paper is devoted to developing a model of baddeleyite recovery from dump products of an apatite-baddeleyite processing plant using centrifugal concentrators. The relevance of the work arises from the acquisition of new knowledge on the optimization of technological parameters of centrifugal concentrators using Knelson CVD (continuous variable discharge) technology – in particular, setting the frequency of valve opening and the duration of valves remaining open. The purpose of the research was to assess the applicability of CVD technology in the treatment of various dump products of the processing plant and to build a model of dependencies between the concentrate and tailings yields and the adjustable parameters, which will allow to perform preliminary calculations of the efficiency of implementing this technology at processing plants. The research objects are middling and main separation tailings of the coarse-grained stream and combined product of main and recleaner separation tailings of the fine-grained stream. The study uses general methods of mathematical statistics: methods of regression analysis, aimed at building statistically significant models, describing dependence of a particular variable on a set of regressors; group method of data handling, the main idea of which is to build a set of models of a given class and choose the optimal one among them. Authors proposed an algorithm for processing experiment results based on classical regression analysis and formulated an original criterion for model selection. Models of dependencies between the concentrate and tailings yields and the adjustable parameters were built, which allowed to establish a relationship between the concentrate yield and the valve opening time, as well as a relationship between the tailings yield and the G-force of the installation.
Highlights
The Kola region is one of the oldest mining regions in Russia
The Kola region has one of the richest resource bases in Russia: 64 chemical elements were found in industrial concentrations, more than 30 of them are being extracted by mining plants
The treatment of apatite-baddeleyite processing plant (ABPP) dump products shows that, despite the fact that the products under the conditions of a centrifugal field are processed in different ways, with varying degrees of concentration and have different particle size distributions, their common trait is that the bulk of the valuable component is recovered to the concentrate from the fine classes
Summary
The Kola region is one of the oldest mining regions in Russia. In the Soviet period, it became a key producer of several strategic minerals (iron ore, nickel, copper, apatite, zirconium) and has retained its role to this day [4]. The Kola region has one of the richest resource bases in Russia: 64 chemical elements were found in industrial concentrations, more than 30 of them are being extracted by mining plants. Paper [13] describes the state of the region's mineral resource base in more detail. The presence of a large number of valuable components leads to construction and operation of mining and processing plants (MPPs). More than 10 plants are located on the Kola Peninsula: Kola
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