The article presents the results of research on development processes and equipment for ore preparation pneumatic dry beneficiation mineral ores. methods crushing grinding before enrichment minerals have been considered, geomaterials is investigated. Highly efficient prototypes are developed tested: crushers multiple dynamic impact RD-MDV-900, DKD-300, centrifugal grinders CMVU-800 VCI-12, separator POS-2000. Fundamental designs created, a number new instruments being designed. efficiency...

In mathematical modeling of processes occurring in devices for mineral processing, problems arise determining a probability particle position on working surfaces devices. this paper, we use an idea the Gibbs method to solve similar problem. A model spiral surface pneumoseparator, motion and flux noninteracting particles along separator surface, algorithm concentration are developed. calculated distribution device is identified with one particle.

The use of dry methods processing and beneficiation mineral raw materials is one the promising areas, as this approach to concentrate production less energy-consuming, labor-intensive, economically beneficial. paper presents experimental studies on preliminary separation Arkachan deposit ores determine quality products. dressability were carried out pilot plants for ore beneficiation: combined impact crusher DKD-300, centrifugal mill TsMVU-800, pneumatic separator POS-2000. Processing...

The main objective of the work is development and implementation technology apparatuses for dry beneficiation diamond-bearing ores creation a fundamentally new class modular mobile ore dressing units (MMODU). article deals with current state crushing plants pneumatic apparatuses. results research disintegration lump in DKD-300 crusher comparison foreign-made centrifugal impact crushers NP 1007 firm "Metso Minerals" by degree are given. comparative extraction minerals different density given...

Abstract The article is aimed at studying the process of free gold deformation extracted during grinding in various types ball mills. Today, mills and similar machines are typically used for fine ores. Their working parts include armor plates a shell, balls as media loaded into shell. Despite fact that dominate over other to extract hard rock gold, they still have serious drawbacks. It believed only 2 20% all consumed energy spent directly on grinding, while rest it overcome friction, heat...

At present the main aggregates for fine grinding of gold ores are ball and similar mills, in which addition to mass ore grinding, deformation free destruction occurs. The article aims study process extracted during develop a mill design preserve commercial component.

Abstract The paper presents the results of studying separation processes various mineral particles different density in a hydrodynamic (water) environment three laboratory models counter-current drum separators with cylindrical, conical and multifaceted drums. Research have shown that compared to cylindrical separators, separator is most effective separating refining environment. high recovery heavy minerals concentrate proves this fact.