Commercial Ore Research Articles

Developing the technology for processing commercial and non-commercial ore from Yoshlik-I deposit

Developing the technology for processing commercial and non-commercial ore from Yoshlik-I deposit

ИННОВАЦИОННЫЕ МЕТОДЫ МАРКШЕЙДЕРСКИХ СЪЕМОК ПРИ ОСВОЕНИИ ХРОМИТОВЫХ МЕСТОРОЖДЕНИЙ

The article discusses the use of modern devices, including laser scanners in the conduct of ground and underground surveying. The results of determining the volume of commercial ore by a laser scanner are presented. The results obtained were used in the dissertations of undergraduates and doctoral students, as well as in the educational process of Satbayev University.

Substantiation of the Technology of Refining Gold Reserves at the Zholymbet Deposit

A set of technical solutions for the opening, preparation and clean-up of the reserves of the Zholymbet gold deposit at the stage of completion in order to maintain the production capacity of the underground mine is outlined. The Zholymbet deposit is located in the south-east of the Seleta-Stepnyak Megasynclinorium in the southern part of the Aksu-Zholymbet structural-metallogenic zone. The deposit of the Zholymbetskoye deposit includes 3 sections (Central, Southern, Northern) and a number of manifestations of the gold-quartz formation. The sites lie in the endo- and exocontact parts of Steppe-type intrusions (Central and Southern) and on the rise of the roof of the Sorokkuduk massif (Northern). The gold mining factory is intended for processing ore from the central section of the Zholymbet deposit («Quarry No. 6», «shh. Center»). The production capacity is 500,000 tons of ore per year. The gold content in commercial ore is 3.07 g/t. The peculiarity of this stage is the need to involve ore bodies bordering on previously worked blocks into operation, as well as taking into account the diversity of mining and geological and mining technical conditions caused by a large number of disconnected ore bodies with insignificant reserves. These technical solutions provide timely access to all reserves of the deposit, safety of mining operations, efficient transportation of ore and ventilation of treatment faces. The adopted technical and technological solutions ensure the effective development of all reserves of the field

Quartz-Hosted Fluid Inclusions in Commercial Ores of Various Type at the Verninskoe Gold Deposit, Bodaibo District, Russia

The paper presents data on quartz-hosted fluid inclusions in commercial ores of various type (veinlet−disseminated and vein) of the Verninskoe gold deposit. The ores of various types were found out to significantly vary in the values of some of their physicochemical parameters of the fluids and in the composition of these fluids. The fluids that formed the gold veins have a somewhat higher initial temperature (356–246°C), a higher density of carbon dioxide in gas inclusions (1.00–0.84 g/cm3), and a higher fluid pressure (3170–1390 bar) than those of the fluids that formed the veinlet–disseminated ores (330–252°C, 0.87–0.54 g/cm3, and 1960–570 bar, respectively). The fluids that formed the gold veins were enriched in CО2, Sr, Ag, Ga, Ge, Mn, Fe, Ni, Sn, Ba, and REE, whereas the fluids that formed veinlet–disseminated mineralization were richer in HCO−3, Br, Sb, V, and Au. This situations may be explained by the interaction of the deep fluid with the terrigenous host rocks in the course of ore deposition. When vein quartz crystallized in relatively wide fractures, the fluid interacted with host rocks and changed not as much as when the veinlet−disseminated ores were formed in narrow fractures. The initial parameters of the fluid that formed the vein quartz were thus the closest to the characteristics of the fluid that transported the ore components, and the comparison of these data with the parameters of the fluids that formed the veinlet–disseminated mineralization demonstrates that they changed in the course of ore deposition. The mineral-forming fluids likely came from a deep-sitting source, and the mineral-forming processes may have involve granitoid-derived fluids.

Geological and geotechnical conditions of Shiraldzhin gold ore mining

Shiraldzhin lode deposit of gold–copper–silver ore in Kyrgyzstan has been studied since the 1980s. Shiraldzhin deposit lies within the boundaries of the Upper-Riphean Kumyshtag intrusion, with the Pre-Cambrian granitoid field broken by pillars of fine-grained Uzuntash granite of the Silurian Period. The proven five lodes have the negative economic appraisal for their mining. The primary appraisal covers only the main Sterzhnevoe lode body and includes some geomechanical problems. For this reason, the estimates of the reserves are re-interpreted toward the optimized gold extraction parameters. Modeling of the ore bodies within Shiraldzhin deposit is accomplished with justification of methods and systems to implement geotechnical solutions. Preparation of commercial ore by the sensor-based grading method allows bringing diluted ore to the level of 90% of underground gold content. Naturally, the proposed technology is a master technology for Shiraldzhin deposit. The open pit mining of Sterzhnevoe ore body in combination with the underground mining method at an ore extraction ratio of 60 : 40% defines the economic efficiency of the mining project. The geomechanical research of the ultimate limit open pit and the geotechnology efficiency evaluation in the underground mine, including the geotechnical behavior analysis in rock mass and the backfilling pilot testing, is a critical requirement to reach the design performance.

Justification of geotechnology for nonuniform geomechanical medium of Dzhamgyr gold ore deposit

The uncertain discontinuity and concentration of the mineralization at Dzhamgyr deposit govern the errors in the appraisal of the commercial ore reserves and in the choice of the optimal mining system parameters. In particular, the ore occurrence discontinuity is different when determined using the ore content coefficient in exploration blocks (observations along the block perimeter at a step of 3.5 m along the dip and strike) or the operational exploration data at a regular grid 3.5×(4–5) m. The accomplished research substantiates the geotechnology based on the geological medium discreteness. It is shown that the extraction-purpose delineation of ore and no-ore and generation of pillars allows using the mixed-type stoping flow chart in enlarged extraction panels. Feasibility of lumpiness-conditioned grading, screening and sensor-based calibration of gold-andquartz ore makes it possible to increase the minimum stoping thickness to 2.5–3 m at the high ore dilution of 70%. This enables using mechanized stoping in larger extraction panels (160×(120–160 m) in combination with shrinkage stoping and /or overhand stoping slicing of very rich (bonanza) ore. With the proposed geotechnology introduced, it is possible to implement planning of investment and economic development of production at the doubled mining output and annual ore extraction of 60 thousand tons at the reduced cost of stoping.The authors appreciate contribution of the Geotechnical Engineering Department Head E. A. Babkin, Vertex Gold Company, to preparation of this article.

Geological features and genesis of the Dyusembay Central (Sayakhat) ore deposit

The article considers the geological features and ore composition of the Dyusembay Central (Sayakhat) leadzinc deposit in the Karsakpai metallogenic complex in the Central Kazakhstan. Historically, the complex was considered industrially significant in terms of iron ores, rather than of lead, zinc, and copper. It is shown that the ore deposit is composed of tuffaceous, silty-sandstone, carbonaceous-terrigenous (ore-hosting), terrigenous, and volcanogenic rocks assigned to the lower subformation of the Zhilandysai Formation of the Upper Proterozoic. The subvolcanic rocks identified and outlined in the area of the ore deposit belong to vent volcanic facies and are represented by felsic automagmatic breccias. All the rock complexes developed within the deposit have undergone multiple alterations: the regional, postvolcanic, contact, and hydrothermal (near-ore) ones. Commercial ores are represented by veinlet-disseminated sulfide mineralization in carbonaceous mudstones and silty sandstones, regionally and metasomatically altered to varying degrees. The ore bodies are composed of heterogeneous mineral assemblages corresponding to various stages and phases of the ore formation. The composition and structural and textural features of the ores reflect the long and complicated history of their formation. It is concluded that this ore deposit belongs to a new formational type of veinlet-disseminated stratified lead-zinc deposits localized in black shale sequences, with a significant role of volcanic activity and regional metamorphism, and is a remobilized SEDEX-type ore deposit.

Effect of Moisture, Hydrogen, and Water–Gas Shift Reaction on the Prereduction Behavior of Comilog and Nchwaning Manganese Ores

The ore–gas reactions in the prereduction zone in a ferromanganese furnace are largely decisive of the overall energy efficiency, carbon consumption, and climate gas emissions in ferromanganese production. An increased understanding of the prereduction zone is thus vital for optimization of the furnace operation. The ore–gas reactions are well known to be governed by kinetics rather than thermodynamics. The raw materials contain various amounts of both chemically bound and surface moisture when fed to the furnace, which may influence the reaction kinetics. This paper presents the investigation of the potential influence of moisture on the prereduction kinetics of two commercial manganese ores, i.e., Comilog and Nchwaning. TGA experiments were carried out by comparing dry and wet ore, as well as introducing H2(g) or H2O(g) to the CO–CO2 gas mixture.

О повышении эффективности геологического изучения Каспийского региона на базе уточненной картографической основы

This article aims to improve the methodology and approaches in substantiation of a unified cartographic base for prospective study, planning, and placement of research, forecasting of new oil and gas accumulations. In this case, the basic objectives are the refinement of the regional structure of the Caspian region by taking into account the main geological events during the formation and development, a more precise stratification of the section, specifically, the possible higher detailing of the Devonian and Cenozoic part. To this end, the main “tools” are considered to be the analysis of the paleogeographic environment, and peculiarities of sediment accumulation, which substantiate the formation of centers of maximum filling with fragmentary material, and anomalous objects (large carbon-bearing platforms and atollshaped massifs, mega-elevations, areas with non-conventional conditions for the oil-and-gas-formation processes). According to the preliminary results, their formation was preceded by the development of accumulative sedimentary forms of diverse genesis and paleobathymetric zoning of the sedimentation basin. The structural plan of the region and local anomalies are evaluated with due regard for such non-conventional features for the exploration geology as the structure of the daylight surface terrain, and the pattern of manifestation of anomalies of potential physical fields. Finally, a more detailed cartographic base allows refining some previously substantiated regional regularities in the manifestations of various types of minerals (hydrocarbons, solid commercial minerals, groundwater, ore, and valuable components), unique processes associated with the genesis of anomalous geological features, from the perspective of exploring, forecasting and detection of new oil and gas accumulations. A unified cartographic base constitutes a key factor for the expansion and active integration of geological organizations of all the five Caspian littoral states.

Recovery of used acetic acid via sulfuric acid

Kazakhstan has a huge phosphate raw material base, where the basis is made up of micro-grained phosphate ores of the Karatau basin. The depletion of reserves of high-quality commercial ores leads to the search for new methods of using the enrichment and sorting of low-grade technogenic ores, one of which is phosphate-siliceous slates. The presented study was carried out in two stages: at the first stage, phosphate-siliceous shales were enriched by the acetic acid method, regime technological parameters, kinetic and thermodynamic regularities of the process were determined. At the second stage of the research a method for recycling used acetic acid during the enrichment of low-grade phosphate-siliceous slates is proposed. In this case, sulfuric acid was chosen as the regenerating agent of acetic acid. The reliability of the performed studies was proved by the use of modern complex research methods: scanning electron microscopy, Energy Dispersive X-Ray and X-Ray difraction analyses. To determine the course of a particular reaction, a thermodynamic analysis was performed using modern HSC 6.0 software. The kinetic data are determined by calculation. The obtained experimental data were subjected to statistical analysis (Chaddock scale, standard deviation, coefficient of determination). The mechanism of interaction of an acetate solution with sulfuric acid is illustratively described. In conclusion, the sulfuric acid method is suitable for the regeneration of applied acetic acid. In this case, a by-product is formed in the form of calcium sulfate. This product can be used as a building binder (confirmed by the protocol of the “National Center of Expertise” of the Republic of Kazakhstan).

НОРМИРОВАНИЕ КАЧЕСТВЕННЫХ И КОЛИЧЕСТВЕННЫХ ПОТЕРЬ РАДИОАКТИВНЫХ РУД ПРИ ДОБЫЧЕ СЛОЕВЫМИ СИСТЕМАМИ С ЗАКЛАДКОЙ

Increasing the mining efficiency of minera丨 deposits is achieved by reducing the quantitative and qualitative losses of mineral raw materials during extraction. One of the most effective development systems from this point of view is the systems of layered excavation of ores with filling the developed space with a hardening bookmark. This makes it possible to mechanize the extraction process as much as possible, which in turn makes the system flexible and mobile, changing the direction of the treatment workings, their width and height, depending on the changing values of the ore parameters. This makes it possible to minimize the clogging of the ore mass with waste rock and significantly increase the completeness of ore extraction. To establish the relationship between the characteristics of ore formations and the overall dimensions of mining equipment, studies were conducted that allowed determining the conditions for the use of various types of equipment for the extraction of minerals with specific characteristics (msr is the capacity of the ore body, asr - is the average uranium content). On the basis of these studies, a method has been developed for calculating the normative indicators of losses and dilution for the conditions of mining rock uranium mineralization by a layer system from top to bottom with filling the cleaning space with a hardening bookmark. To determine the calculated indicators, the distribution of power classes in ore bodies depending on its average value in the ore body and the distribution of uranium by concentration classes from its average content in the ore body were studied. The criterion for determining the losses during the breakdown is the conditioned indicator - the minimum metric percentage at which commercial ore can be obtained

Recycling of Waste Slag Upon Production of Manganese Ferroalloys

The mineral resources base of manganese ores is sufficiently large in Russia. However, their mining capacity is almost absent. This is due to the low quality of domestic manganese ores and the high content of phosphorus. To date, Russia has been obliged to import the commercial manganese ore, manganese-containing ferroalloys, metallic manganese, and manganese dioxide. To produce the high-carbon ferromanganese the composition of charge was developed. The optimum variant was that where 10–15% of manganese-containing raw materials were changed for waste slag. In this case, the phosphorus content in the high-carbon ferromanganese is lower by approximately 20 rel. % in comparison with the production of ferromanganese only from the manganese-containing raw materials. About 50–60 rel. % of manganese can be extracted from the waste slag of silicon-thermal production. To produce the hot metal, the composition of iron-bearing burden material was developed. The optimum variant was that where 100% of manganese raw materials were changed for the waste slag. In this case, upon production of hot metal, the specific consumptions of manganese raw materials and limestone were decreased by 100 and 20%, respectively. The phosphorus concentration in metal was lower by about 10 rel. % as compared to the production of hot metal only from the manganese raw materials. Up to 55% of manganese can be extracted from the waste slag of silicothermic production, which is irretrievably lost at present.
 Keywords: manganese ferroalloys, manganese-containing raw materials, waste slag, hot metal

The Condition Of General Development Of The Mineral Resource Base In Uzbekistan

The development of methods and means to improve the efficiency of the mining facility is aimed at improving the efficiency of the use of raw materials concentrated in deposits of natural and man-made origin. This increase in efficiency is manifested through maximizing the content of commercial ore shipped for processing, creating prerequisites for increasing the shipment of commercial ore and increasing the productivity of the processing plant. Maximization of the content in commercial ore is based on the developed scheme of cyclical increase in the efficiency of resource potential use for the entire period of field development, supplemented by an improved method of current mining planning based on anisotropy of contents and dynamic conditions.

Reduction of Manganese Ores in CO-CO2 Atmospheres

The reduction of higher manganese oxides to MnO in the prereduction zone of a ferromanganese furnace is largely decisive for the overall energy efficiency and climate gas emissions for the overall production process. Kinetics of the gas-solid reaction between the ore and CO(g) in the ascending furnace gas is dependent on the ore characteristics. The aim of this study was to elucidate the reduction steps during prereduction of two commercial manganese ores, Comilog and Nchwaning, in CO-CO2 atmosphere. Ore samples in various size fractions were exposed to isothermal and non-isothermal temperature regimes in various gas atmospheres utilizing a thermogravimetric furnace. Samples were characterized by titration, XRF, XRD, and SEM analyses. Comilog is a high oxygen ore, where the majority of the ore is constituted by various tetravalent manganese minerals. When heated in reducing atmosphere, MnO2-oxides were reduced to MnO in a single step at temperatures below 550 °C. The rate was dependent on the particle size and CO-concentration. When the temperature reached 550 °C, any present MnO2 rapidly decomposed to Mn2O3, which further continued to reduce to MnO. Nchwaning ore was found to be mainly constituted by Mn2O3-oxides, calcite and hematite. Manganese- and iron-oxides were found to reduce at similar temperature ranges, however the manganese oxide reduction was initiated prior to the iron oxides in smaller particle sizes (< 4 mm). Trivalent manganese oxides reduced to MnO in a single step, and the reduction of iron oxides subsided with the formation of wüstite. Carbonates decomposed at temperature range 800 °C to 1000 °C. Both ores obtained a promoted reaction rate with decreasing particle size and increased pctCO in CO-CO2 atmosphere.

Assessment of environmental and resource-saving technologies and technical means for processing and disposal of man-made formations and waste

The object of research is environmental and resource-saving technologies and technical means for the processing and disposal of man-made formations and waste in the underground mining of mineral deposits with backfilling of the worked-out space. One of the most problematic areas is the management of the state of ore-containing energy-disturbed massifs and the delivery of hardening filling mixtures to the place of their laying, as well as the shortage of components for their preparation. This increases the importance of the management of the stress-strain state (SSS) of the rock mass, ensuring the safety of the earth’s surface from destruction and vital activity of the population living in the zone of influence of the mining region.The paper presents the main scientific and practical results of the substantiation of technologies and technical means for the disposal of mining and metallurgical waste into underground goaf (man-made voids) as components of hardening filling mixtures of various composition and strength. Methods of theoretical generalizations with the use of mathematical statistics, physical and mathematical modeling, with the implementation of calculations and feasibility studies, laboratory and field experimental studies, industrial tests in the conditions of operating enterprises of mining and metallurgical production are described. On the basis of the study of the mechanism of stress-strain state of a rock mass using geophysical and surveying methods, an environmental technology for extinguishing technogenic voids in energy-disturbed massifs is proposed. This technology makes it possible to ensure the safety of the earth’s surface and the vital activity of the population living in the zone of influence of mountain objects (mines, dumps, industrial sites for stowing complexes, tailings, ore-processing plants (OPP), etc.). It was found that for the mines of the state enterprise «VostGOK» (Ukraine), the utilization rate of own production waste for hardening backfill is from 0.45 to 0.68; hydraulic – from 0.56 to 0.75; free-flowing – 0.62, and the extraction of each ton of commercial ore is accompanied by the output of 0.7-0.8 tons of waste. An assessment of the utilization level of wastes of mining and metallurgical production is given and an inventory for wastes of mining enterprises is given, which gives an estimate and directions of their possible use for the needs of the national economy. The research results can be used in underground mining of complex ore deposits and mining and metallurgical production.

The issues of optimization parameters of quarry transport systems

The cost of technological transport in open-pit mining for medium-depth quarries reaches 50 % of the total cost of production of commercial ore, and for deep-exceed this figure. Therefore, optimization of quarry transport systems is an important element in improving the efficiency of mining. The most important element of optimization is through her character the use of optimization to all linked processes on the basis of objective criteria of efficiency, unity and objectivity of the source data, using multilevel data from sensors mounted on the mining and transport machines to total economic values for processing. A promising direction for the implementation of tools for optimizing the processes of open pit mining and in particular transport systems of quarries, as one of the most important subsystems, is the end-to-end digitalization of mining production. The article presents the results of research and methodological approach to the creation of methods of optimization of complex transport systems on the basis of complex computer modeling, both simulation and economic and mathematical. The concept of TSC optimization methods in the absence of expressed maxima or minima of the parameters reflecting the optimization parameters is proposed. The possibilities of optimization of transport systems due to controlled transients are shown, it is established that the rational organization of the transition process provides cost savings of up to 2 times or more. The concept of a dynamic model of the quarry transport system development, reflecting the transition processes in its formation, is presented.

The Kyzyl–Tashtyg Ore Deposit of Eastern Tuva—A Standard for the Ancient Volcanogenic Formation of Pyrite-Polymetallic Ores

Abstract —The Kyzyl–Tashtyg deposit and the ore field of the same name are included in the Kyzyl–Tashtyg ore cluster, which is located in the southeastern part of the Ulugoi structural-metallogenic zone. The geological section of the ore field consists of lower Cambrian terrigenous and volcanogenic deposits of the Tumat-Taiga and Tapsa Formations that include a homodromous sequence of early andesite-basalts transitioning to acid dacite-rhyolite rocks with widespread subvolcanic intrusions. The pyrite-polymetallic mineralization of the ore field associates spatially with a central-type volcanic structure and is localized within the “motley” unit, consisting of three lithological-stratigraphic horizons. The Kyzyl–Tashtyg pyrite-polymetallic deposit is the main ore occurrence of the ore field, which contains the main reserves of pyrite-polymetallic ores. The mineralization outcrops on the surface are 650 m in length and 60–65 m wide. Reserves of commercial ore are 12,920 mln tons with average concentrations: Pb—2.8%, Zn—10.3%, Cu—0.65%, Au—1.03 ppm, Ag—48.71 ppm. The ores have typically simple mineral compositions consisting of pyrite, chalcopyrite, sphalerite, galena and barite. Secondary minerals include enargite, hessite, sylvanite, proustsite, and native silver. Ores are classified based on the dominant mineral or groups of minerals into sulfur-pyrite (pyrite), copper-zinc (pyrite-chalcopyrite-sphalerite), polymetallic (sphalerite-galena), and barite-polymetallic (barite-sphalerite-galena) varieties. The main commercial type is represented by the copper-zinc mineralization. The widest range of impurity elements and their highest concentrations have been identified in copper-zinc and polymetallic ores, where the main mineral is sphalerite—the carrier of the largest amount of impurity elements. In these ores, commercial concentrations of gold and silver have been detected: Au—0.8; 2.3 ppm, and Ag—26; 78 ppm correspondingly. Formation temperatures of different types of ores of the deposit range from 400–305 °C to 270–150 °C. There is a pattern of decreasing formation temperatures from the sulfur-pyrite to the copper-zinc and to the barite-polymetallic ores. This pattern forms a vertical mineralization zoning from the bottom to the top of the deposit. The formation of the deposit was related to early Cambrian volcanism and included different mechanisms of ore deposition. The hill-like shape of the main ore lode with intense hydrothermal alteration of rocks in its base indicates a mineralization zone with veinlet-disseminated and massive ore structures, which indicates a hydrothermal-metasomatic origin.

Comprehensive REE + Y and sensitive redox trace elements of Algerian phosphorites (Tébessa, eastern Algeria): A geochemical study and depositional environments tracking

The Algerian sedimentary phosphorites of marine origin are located mainly in the Tébessa region, which is part of the Eastern Saharan Atlas. These phosphorites are hosted by Paleocene-Eocene series and crop out in two main sedimentary areas: the northern sites (Djebel El Kouif, Djebel Dyr and Djebel Tazbant) and the southern sites, which include the Djebel Onk commercial world-class ore deposits that are represented in this study by the Kef Essenoun sector. This study reports a detailed investigation of these phosphorites at a regional scale and is aimed to characterizing the evolution of their depositional environments. Field and laboratory works consist of a systematic sampling of outcrops, petrographical (OM and SEM-EDS), mineralogical (XRPD) and chemical (major, trace and rare earth elements by ICP-MS) analyses associated with a PCA statistical treatment. The time-wise evolution of the depositional environments was constrained based on rare earth elements (REE) and selected redox sensitive element proxies, such as Ce, Eu, Y, Mn, U and V.The results show that the phosphorites have a granular fabric with variable grain sizes. The grains can contain micro-remains and impurities related to their origin, which was most often fecal pellets. Carbonate fluor-apatite is the main mineral phase in these phosphorites, where P2O5 contents show large variations between different outcrops (average from 18.39 to 30.16 wt%). A marked evolution of depositional environments is observed in their vertical trends from sub-reduced and sub-oxic in the lower beds to rather oxic conditions in the upper layers. This evolution shows a significant shift along the sedimentary profiles reflecting more open connection to Tethyan seawater towards younging trend. These results contrast remarkable changes of depositional conditions during Paleocene–Eocene transition.

Oxygen transport capacity and kinetic study of ilmenite ores for methane chemical-looping combustion

Reactivity and oxygen-transport capacity of Canadian and commercial ilmenite ores in the chemical-looping combustion of methane were investigated in a thermogravimetric analyzer (TGA). Oxygen carrier performance was evaluated over multiple cycles during which Canadian ilmenite oxygen transport capacity increased from 2.7% to 14.2% and the commercial sample maintained an approximately constant oxygen transport capacity at 4.5%. XRD and SEM results indicate that new phases were formed, and surface morphology was transformed significantly during cyclic operations. Studies on carbon deposition on the ilmenite surface indicate that lower methane partial pressure and reduction temperatures are favorable to effectively prevent this phenomenon. The kinetic grain model (GM) was found satisfactorily to fit reduction rate data obtained at atmospheric pressure. Intrinsic reaction rates and kinetic parameters were assessed, accordingly. Activation energy were estimated 106.7 ± 10.6 kJ/mol and 95.0 ± 8.5 kJ/mol for the Canadian and commercial samples, respectively.

Refuse disposal efficiency increase at open pit mining by using container technology

At the present time actually all plants changed over to autogenous melting of copper-containing concentrates use the flotation of converter slags (CS) dropping in tails about 0.55-0.90 % Cu; it is higher than copper content in commercial ore. The most part of iron, zinc, lead, and silicate component of CS is also dropping with flotation tails. The concentrate resulted from converter slag (CCS) contains magnetite and this fact affects negatively on running of smelt-furnace; moreover at magnetic separation of resulted concentrate a certain part of copper is dropping too. Goal of this work is to develop pyrometallurgical technique of CS processing with its complete utilization. The methodology of studies is to implement the crucible melting to select best parameters of reduction melting of burden material based on CCS. The technological solution of two-stage process has been shown: during the first stage at temperatures 1250-1300 оC copper is separated to metallized middling product and slag composition is corrected; the latter at the second stage – at temperatures 1450-1500 оC, it is used for iron reduction with subsequent iron conversion into pig iron. The technique permits utilize completely all slag components. So 95 % of copper moves to metallized alloy, the slag of second stage of reduction contains only 0.02 % Cu, 2-5 % Fe, and 0.2 % of sulfur. Copper-containing alloys go to conversion; lead and zinc pass to fumes. Resulted demetallized slag can use in construction products. Moreover, the hot slag after second stage of degrading can use as excellent flux for conversion; it is particularly true in reprocessing of rich mattes to produce blister copper since this process runs with heavy heat balance.