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ArticleName Specialties of design-and-spatial-layout solutions and startup problems of modern concentrating plants ore-preparation circuits
ArticleAuthor Baranov V. F.

«Mekhanobr Engineering» JSC (Russia):

Baranov V. F., Deputy General Director for Prospective Projects, Doctor of Engineering, 


Main production equipment and design-and-spatial-layout solutions of the newest copper and coppergold operating, as well as being at design stage, concentrating plants' ore-preparation circuits, applying two competitive methods of ore-preparation: ore semiautogenous grinding (SAG) and grinding by high-pressure grinding rolls (HPGR), are considered. An important specialty of foreign concentrating plants' spatial-layout solutions with SAG being applied to mono ores — designing ore-preparation circuit as a mono section for capacities up to 36 million tons of ore per year, is shown up. In design of spatial-layout solutions for concentrating plants with HPGR, foreign engineering com panies seek to reduce costs of ore-preparation circuits through minimization of transport facilities length, as well as capacities of ore storages and bins, and also by means of applying blocking solutions and concepts. A detailed comparison of the two methods of ore-preparation by power consumption was carried out. Simultaneously, the start-up problems of ore-dressing facilities and ways of their solution are elucidated. Recommendations are given with regard to most rational spatial-layout solutions application in design practice, as well as to working out actions with a view to achieve designed throughput capacity of ore-preparation circuits during start-up period, in the cases when supplied feed material is stronger, than planned.

keywords Design-and-spatial-layout solutions, mono section, semiautogenous grinding, high-pressure grinding rolls, pre-crushing, pebble crusher

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