Mineral Processing Department

Comminuting and Mechanochemical Processes

FIELD:

Fundamental, applied and developing research of comminution process to obtain ultra fine materials (nano-phase range), as well as mechanical and mechanochemical activation of both natural and synthetic materials:

Kinetics and mechanical energy of grinding;
Defining the quantity of mechanical energy, which is produced in mills, and proportion of energy converting to material;
Basic characteristics of mills technical solutions and the mills variety influence on quantity and rate of mechanical energy transmission;
Kinetics of mechanical energy conversion;
Kinetics of mechanical and mechanochemical mineral activation;
The converted mechanical energy influence on chemical and structural changes in material;
Influence the structural defects energy in materials on mechanical and mechanochemical activity of reaction kinetics;
Mechanical and mechanochemical material activation effect in different processes (synthesis, sintering, mechanofusion and so on);
Technological and engineering solutions of fine grinding (micronizing) of mechanical and mechanochemical activation.

Operations and Processes in Mineral Processing

FIELD:

Fundamental, applied and developing research of metallic, nonmetallic, energetic and secondary raw materials for the sake of:

Optimal technological process of mineral processing selection;
Calculation of processing economy and product utilization;
Qualitative flow-sheet of technological process selection;
Determining the parameters needed for equipment choice;
Optimal parameters choosing considering sort, quality and value of obtained products;

EXAMINATION:

Samples preparation: grinding, milling, comminution, sampling.
Characterization of raw material and concentration product: physical characteristics, raw humidity, bulk density and specific weight, specific activity area, pH value, hardness, grinding index and grain sizing, chemical and mineralogical characterization. Technological examinations of concentration: comminution and classifying, atritional scrubbing, gravitational concentration, magnetic concentration, electrostatic concentration, flotation and leaching; elaboration the concentration balance-sheet and qualitative flow-sheet of technological process.
Technological examinations of drainage: coagulation and filtration.
Technological examinations of enlarging: pelletizing and briquetting.
Semi-industrial technological examinations are carried out according to flow-sheet and conditions determined in laboratory examinations, for the sake of checking out and confirming laboratory examination results.

OTHER:

Running-in the industrial plants;
Feasibility study and technological project elaboration for new industrial facilities;
Defining and organization of pilot plants in the field of mineral processing and other technologies for the commercial products experimental production.

Engineering And Monitoring

FIELD:

In the department for monitoring, verification and realization of developed engineering solutions industrial application, the projecting and realization are accomplished in the fields of: processing and utilization of disposable raw materials; synthesis of ceramic, inorganic, metallurgical materials and materials for environment protection.

Projecting of developing engineering solutions, based on process results checked in semi-industrial or industrial conditions, is performed according to procedure:

elaboration of clipped techno-economic feasibility study;
general project elaboration, according to legal acts and industrial plant standards, equipped with detailed techno-economic analysis;
main project elaboration, provided with environment protection study, according to global legal acts.

Realization of main project for developed engineering solutions is accomplished through:

building inspection, production line installing, all process phases connecting, scheduled production balance;
facilities running in, verification parameters of projected engineering solutions;
continual supervision of plant working.

High Quality Special Products Obtaining by Raw Materials Treatment

Non-metallic raw materials:

Quartz sands (quartzic sandstone, quartzic sand, quartzic gravel, quartzite and hydrothermal quartz).
Kaolin, feldspar, mica, quartz (white granite, kaolinitic granite, pegmatite, quartz-feldspar-mica sand).
Carbonated (Ca-carbonaceous raw materials, Ca-Mg carbonaceous raw materials, Mg- carbonaceous raw materials).
Clays (kaolinic, illitic, bentonitic).
Other mineral raw materials (barytes, borates, fluor spar, wollastonite, talc, dunite).
Synthetics (synthetic mulite, electro- melted quartz, synthetic gypsum, synthetic wollastonite).

Metallic raw materials:

Magnetite
Titanium magnetite
Titanium
Nickel
Molybdenum
Bauxite
Precious metals

Secondary raw materials:

Production waste materials:

exploitation, mineral processing/concentration (waste material, refuse slate, sticky gaunge).
metallurgical production (calcined pyrites, casting and granulated slags, non-ferrous metal raw materials).
thermal energy production (thermal plant slags, ashes from thermal plant electro-filters).
chemical production (cement production ashes, high smokestack’s and their filters crock).
inorganic materials production (ceramics, glass, constructive material, refractories, special materials).

Technology Operations

Magnetic concentration
Wet procedure Magnetic induction, Range 0.5T - 2.0T Screening conveyor, Screening drum, High grade magnetic separator	Dry procedure Magnetic induction, Range 0.5T - 2.0T

Electrostatic concentration
Dry procedure Electrostatic field between electrodes is produced using voltage in the range of 0 – 20,000V.

Gravity concentration
Fluid: water Settling machine Shaking table Spiral concentrator	Fluid: dense medium P-T analysis Conic concentrator