Azarian V. Technological and theoretical principles of quality management of the iron-containing raw material in the generalized flows of iron ore at ore mining and concentrating plants

The dissertation purports to solve an actual scientific and practical problem of ensuring the guaranteed quality levels and grade of ore amplitude fluctuations stabilization in ore flows of the mining and concentrating plants by means of generalizing the quality control of the iron-containing raw materials of the final ore flows of the ore mining and processing plants. The solution entails combining all the means of control, sorting and mixing of ores into a single, technologically dominant computerized complex, subject to general target algorithmization, dominating the entire scale of the complex. The dependencies existing between the accuracy and efficiency of quality management and the properties of the rock face and technological factors in the conditions of open development have been established. Also the forecast profit for mining and processing plants dependency on quality fluctuations in final ore flows has been obtained in the course of research. A mathematical model for the formation of iron ore quarry with a guaranteed range of grade of ore value was developed on the basis of the management theory. The dependence between the period of mining faces treatment and the incomes of the mining and processing plant has been investigated and substantiated. The application of the mobile crushing and sorting radiometric complex as a part of the management technology in the ore-streams quality is theoretically grounded; it is further proved that its use allows making positive technological, economical, energy-saving and ecological impact by means of increasing the grade of ore and stabilizing the quality fluctuations of the final ore flow. The concept of the creation of the generalized raw materials quality management system for the integrated ore flows, based on the synergy of the quality control system and the systems of mining transport dispatching, has been developed. The theory of assessment of quality management technology in ore flows has been improved by means of implementation of an integrated variable F1; the algorithm for technological and economic substantiation of ore flows quality management technology has also been introduced.