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Concepts of the evaluation of multi-product separation processes of mineral engineering |
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Concepts of the evaluation of multi-product separation processes of mineral engineering Author: K.St. Sztaba
The utilisation of mineral materials requires a detailed control and evaluation of both the products properties and the course and a result of processes occurring in the consecutive utilisation stages. These tasks are of special significance in case of processing of materials of complex properties, used in a compound way. The properties of mineral raw materials gave them a position of a classic object of complex processing. The first technological stage of utilisation of mineral raw materials is constituted by a set of operations of mineral engineering (processing of mined minerals and other mineral raw materials). This stage comprises the tasks discussed for the first time and those occurring in the most developed way. The separation operations constitute the basic part of unitary technological operations of mineral engineering. There are numerous principles and detailed methods of description and evaluation of such operations. The applied methods concern usually only single-useful component raw materials (having one property) and single technological operations. There are no methods considering the specific conditions of evaluation of complex processes, and especially the processing of materials of the complex system of useful components (properties). The paper presents the concept of joint evaluation of effectiveness of these separation processes in which more than two products are obtained from a multi-component feed. For sake of an example, the most popular technological criteria of evaluation were assumed. Also, the method of quantitative evaluation of separation results, proposed earlier by the author, in separation processes according to the feed segregation rate, purposefully obtained during such processes. This method has been adapted to the results of processing on heterogeneous raw materials. It has been also indicated that that the evaluations of the process according to the analysis of the segregation rate corresponds the conditions, which are necessary for evaluation of the multi-product process. The system provided for mineral engineering -- of the most complex conditions resulting from the primary properties of the processed materials -- can be adapted to the description and evaluation of any similar processing processes in various branches of industry.
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2011