Zinc Production Research Articles

The Fuzzy Failure Mode and Effect Analysis (FMEA) Method to Improve Roofing Product’s Quality (case study : XYZ Company)

Evaluation and improvement of production performance are things that must be considered in an effort to maintain and improve the quality of production results. One level in measuring production performance is smooth production. Good risk management can support and maintain the smooth production process in the company. This research was conducted at PT XYZ with the aim to reduce the risk of failure of zinc products and propose improvements to the risk of product failure to improve the quality of zinc products. The method used in this case is Fuzzy FMEA (Failure Mode and Effect Analysis). Fuzzy logic approach is preferred to eliminate this shortcoming in setting risk priorities number. The use of the Fuzzy FMEA method can generate priority figures for failure modes so that problems can be solved efficiently in an effort to improve production performance. The results of this study are failure modes. One of the rollers got the highest FRPN value of 880,289 so that failure due to incorrect grinding machine settings and the lack of operator accuracy in positioning zinc was recommended as a major improvement to minimize milling error failures in the production process.

Recovery of Cobalt from the Residues of an Industrial Zinc Refinery

The electrolytic production of metallic zinc from processing zinc sulfide concentrates generates a residue containing cadmium, copper, and cobalt that need to be removed from the electrolytic zinc solution because they are harmful to the zinc electro-winning process. This residue is commonly sent to other parties that partly recover the contained elements. These elements can generate revenues if recovered at the zinc plant site. A series of laboratory tests were conducted to evaluate a method to process a zinc plant residue with the objective of recovering cobalt into a salable product. The proposed process comprises washing, selective leaching, purifying and precipitation of cobalt following its oxidation. The process allows the production of a cobalt rich hydroxide precipitate assaying 45 ± 4% Co, 0.8 ± 0.2% Zn, 4.4 ± 0.7% Cu, and 0.120 ± 0.004% Cd at a 61 ± 14% Co recovery. Replicating the whole process with different feed samples allowed the identification of the critical steps in the production of the cobalt product; one of these critical steps being the control of the oxidation conditions for the selective precipitation step.

Thermo-environmental evaluation of a modified Waelz process for hazardous waste treatment

Electric arc furnace dust is a waste by-product of electric arc furnaces in steel production. This material is hazardous to the environment due to the presence of metals, such as chromium, lead, and cadmium; in addition to these, there is zinc in its composition. One of the main ways of recovering zinc from the electric arc furnace dust is carried out in rotary kilns called Waelz kilns. This work aims to develop a model of a Waelz kiln and evaluate the impact of processing sludge from an industrial effluent treatment plant as a feed along with electric arc furnace dust, with and without the inclusion of a drying system for the sludge and a thermal integration system with the Waelz slag. The model, validated against industrial data plant, revealed an optimum operational point, resulting in a zinc recovery of 98.3 %, which is equivalent to an increase in the production by 6.2 %. The scenario with direct sludge feed into the kiln resulted in a maximum zinc recovery rate of 89 %. The results from the sludge drying scenario imply a zinc recovery of 94 % and represent a viable alternative for reducing the amount of solid waste generated in the zinc production plants that use the Waelz kiln by 1100 t/year per tonne of sludge treated. Furthermore, it also increased zinc production to 1300 t/year.

Recent emerging gut Microbiome Management Modalities in Acute Diarrhea in Children: (a comparative study review of different probiotic strains). An Update. !

Aims & Objectives: Acute Diarrhea (AD) is a highly prevalent condition that causes significant morbidity and mortality worldwide. Conventional therapies include oral Rehydration Solutions (ORS), Antibiotics and Zinc Products. Emerging data suggest that Probiotics use in the treatment & control of AD cases in children may help supplement current therapies for further control. Methods Herein, we review the evidence of several Probiotics modalities for AD treatment. We describe the Clinical Impact & prevalence of Acute Diarrhea in children and its complications, provide an overview of current treatments, and finally, discuss recent emergent Gut approaches to AD management. Specifically, we will describe - in a Comparative study - on the utility of different kinds of Probiotics known & used and common natural products in the treatment of Acute cases of AD and focus on recent, high-quality studies. Adverse effects and potential interactions of each therapy will be highlighted where applicable.

Agronomic characteristics and management of diseases in maize with chelate-based products containing calcium, copper, manganese, and zinc

The aim of this work was to verify the potential of chelate-based products containing calcium, copper, manganese, and zinc for the management of Pantoea ananatis, Puccinia polysora, Cercospora zeae-maydis, Exserohilum turcicum, Diplodia macrospora, and Pseudomonas avenae in crop maize growth in the summer season, as well as their influence on agronomic characteristics. The treatments included commercial chelate-based products of amino acids with the elements calcium (15%), copper (5%), manganese (15%), and zinc (10%) at doses of 0.5 kg ha-1, 0.3 L ha-1, 0.4 kg ha-1, and 1 L ha-1, respectively; fungicides (20% azoxystrobin and 8% cyproconazole at a dose of 0.3 L ha-1 + 25% propiconazole at a dose of 0.4 L ha-1); and water. The tests were carried out under field conditions for two consecutive years with two simple hybrids. The plant height, stem diameter, number of rows per ear, number of grains per ear row, productivity and mass of one thousand grains, as well as the severity of leaf diseases, were all evaluated, and chemical analysis of the leaves was performed. In the 2016/2017 growth season, for the number of rows per ear and number of grains per row, the fungicide treatment showed the highest values, whereas for the mass of one thousand grains and productivity, the chelate treatments did not differ from the fungicide treatment and were different from the water treatment. In the 2017/2018 growth season, for the mass of one thousand grains and yield, only the fungicide treatment was different from the water treatment. For all the chelates studied for both hybrids, there was no difference in nutrient content before and after foliar application. It can be concluded that calcium, copper, manganese, and zinc products may influence agronomic traits but not the severity of the diseases evaluated in these two hybrids of maize under the edaphoclimatic conditions in which the study was carried out.

Effects of Selenium- and Zinc-Enriched Lactobacillus plantarum SeZi on Antioxidant Capacities and Gut Microbiome in an ICR Mouse Model.

Selenium and zinc are essential trace minerals for humans with various biological functions. In this study, selenium- and zinc-tolerant lactic acid bacteria (LAB) isolates were screened out from human fecal samples. Amongst three hundred LAB isolates, the Lactobacillus plantarum SeZi strain displayed the tolerance against selenium and zinc with the greatest biomass production and bioaccumulation of selenium and zinc. To further assess the characteristics of this strain, the lyophilized L. plantarum SeZi were prepared and administered to Institute of Cancer Research (ICR) mice. The mice were divided into four groups, provided with normal chow (Con), or normal chow supplemented with Na2SeO3 and ZnSO4∙7H2O (SZ), L. plantarum SeZi (Lp), or selenium- and zinc-enriched L. plantarum SeZi (SZ + Lp), respectively. After 4 weeks of oral administration, the concentrations of selenium and zinc in blood were significantly increased in the SZ + Lp group when compared to the control or SZ group (p < 0.05). The increased selenium level led to an enhanced glutathione peroxidase activity and decreased blood malondialdehyde level in the SZ + Lp group (p < 0.05). Meanwhile, the results of bacterial community and microbial metabolic pathway analysis via 16S rRNA gene amplicon sequencing showed that L. plantarum SeZi significantly promoted the utilization of selenocysteine, seleno-cystathionine and seleno-methionine in the selenocompounds metabolism. Here, the in vivo antioxidant capacities of the selenium- and zinc-enriched lactobacillus strain showed us the utilization of a unique probiotic as a Se/Zn supplement with high availability, low toxicity, and additional probiotic advantages.

PROCESSING OF SLAGS OF COPPER MANUFACTURING WITH THE USE OF IDEAL MIXING EQUIPMENT

The article discusses the issues of processing slag of copper production using devices that model ideal mixing. It has been shown that the use of this type of apparatus increases the efficiency of physical and chemical processes and significantly reduces the copper content in dump slags. It has been found that the process of reduction of ferric iron oxide by the clinker in the initial period takes place in the kinetic mode. After reducing the concentration of magnetite (3-5%) in the slag, the process of reducing it passes into the diffusion region, that is, restoring the excess content of ferric iron in iron silicate melts takes a short period of time during which the process can be carried out, without significantly delaying the operation time of the main industrial equipment. The optimal slag magnetite reducing agent is determined to be zinc production waste

X-R Kontrol Kartları ve Çok Boyutlu Ölçekleme Analizi Kullanılarak Çayeli Bakır İşletmelerinin İstatistiksel Proses Kontrolü

The feeding materials, concentrates and tailings of zinc and copper ores were examined by multidimensional scaling analysis. The calculated 〖LCL_X,UCL〗_X and UCL_R values for copper (feeding material, concentrate, and tailing) according to X-R analysis are 1.94, 16.92, 0.16; 2.96, 22.90, 0.41 and 0.89, 5.19, 0.21 respectively. Likewise, these values for zinc are 0.31, 43.46, 0.23; 3.00, 50.33, 0.66 and 2.34, 5.97, 0.37 respectively. The calculated Cp copper and zinc values are 2.08, 1.42, 1.39 and 1.82, 1.54, 1.25 respectively. The feeding material, concentrate, and tailing parameters of the copper and zinc products are greater than 1.0. Likewise, this study shows that the calculated Cpk values for copper and zinc (2.15, 1.20, 1.72 and 3.82, 1.05, 1.53 respectively) are larger than 1. Stress value was calculated at the first step of the analysis and established at 0.00258 and 0.00674 for copper and zinc, respectively, which indicates a fair fit for both. Nevertheless, the coefficient of determination (RSQ) was calculated as 0.9998 and 0.9986 for copper and zinc, respectively. These values indicated a high correlation between factors. Finally, this study showed that the usefulness of statistical process control techniques, such as mean and range control charts, process capability indexes and multidimensional scaling analysis, in helping decision makers in Cayeli Copper Companies.

Simultaneous removal of Co, Cu, Cd and Ni from zinc sulfate solution by zinc dust cementation

Instead of conventional two or three-stage zinc dust cementation purification, one-stage purification was proposed to remove copper, cadmium and nickel as well as cobalt by CuSb activation simultaneously from solution for an electrolytic zinc production process under development by MMG Limited. Copper was rapidly removed, forming a porous copper shell around a zinc particle. The shell acted as a cathode for the reduction of cobalt, cadmium, and nickel while the zinc particle dissolved anodically. The measurement of hydrogen evolution as well as slurry potential explains how the reduction and re-dissolution of cobalt, cadmium and nickel as a function of time is influenced by temperature, pH, and antimony and zinc dust dosages, providing a deeper understanding of impurity removal. Cobalt, cadmium and nickel were initially removed without back reaction. When zinc dissolved to a certain degree, the shell potential exceeded their redox potentials and the impurities started to re-dissolve. The shell potential was determined by the electrical contact between a zinc particle and the shell, the portion of the remaining zinc and the surface product on the zinc particle. The zinc dissolution weakened the electrical contact and therefore increased the shell potential. Temperature, pH, and antimony and zinc dust dosages not only affect the impurity reduction but also zinc dissolution, the shell potential and finally the impurity re-dissolution in different degrees. Copper, cadmium, cobalt and nickel can be completely removed in one step. The optimal conditions for impurity removal are recommended.

Recent Emerging Gut Microbiome Management Modalities in Acute Diarrhea in Children: (A Comparative Study Review of Different Probiotic Strains)..An Update!

Acute Diarrhea (AD) is a highly prevalent condition that causes significant morbidity and mortality worldwide. Conventional therapies include Oral Rehydration Solutions (ORS), Antibiotics, and Zinc Products. Emerging data suggest that Probiotics use in the treatment and control of AD cases in children may help supplement current therapies for further control. Herein, we review the evidence of several Probiotics modalities for AD treatment. We describe the Clinical Impact and prevalence of Acute Diarrhea in children and its complications, provide an overview of current treatments, and finally, discuss recent emergent Gut approaches to AD management. Specifically, we will describe in a Comparative study on the utility of different kinds of Probiotics known and used and common natural products in the treatment of Acute cases of AD and focus on recent, high-quality studies. Adverse effects and potential interactions of each therapy will be highlighted where applicable.

Evaluating the properties of zinc production wastes as filler and their effects on asphalt mastic

This study evaluated four types of zinc production waste and limestone powder to be used as filler in asphalt mixtures. The properties of the fillers, asphalt mastic and mixtures made by the fillers were investigated. Only the results for fillers and mastics are provided. The physical and chemical properties and morphology of waste fillers, namely cobalt cake, leach cake, nickel cake, and zinc ash, as well as the limestone powder, as control filler, were examined. The moisture content, particle and bulk density, methylene blue value (MBV), Rigden voids (RV), pH, chemical compositions, morphology, hydrophobicity, size distribution, solubility in water, and specific surface area of the fillers were evaluated. Also, using a constant volumetric filler to binder ratio, asphalt mastics were made and their softening point, ductility, penetration grade and rheological properties were measured and compared with neat binder. Evaluation of the properties of fillers showed that the fillers can be potentially used in asphalt mixtures. Zinc ash had comparable and even better properties than the control filler. In terms of hydrophobicity, solubility in water and moisture content, the best performance belonged to zinc ash, followed by limestone, nickel, cobalt, and leach cake, respectively. Leach and cobalt cake showed to be hydrophilic fillers. The lowest MBV was found for the zinc ash, followed by limestone, nickel, leach and cobalt cake. The highest RV was found for the leach cake, and lowest for zinc ash filler. The fillers have different levels of stiffening effect on the mastic. In terms of temperature susceptibility using the softening point test results, the lowest sensitivity was obtained for zinc ash followed by cobalt cake, leach cake, limestone, and nickel cake. However, penetration and DSR test results revealed that the highest stiffening effect was obtained using zinc ash followed by cobalt cake, nickel cake, limestone, and leach cake. The stiffening effect of the fillers can be described by the morphology of filler particles; however, RV cannot be directly related to the stiffening effect of the fillers.

Hydrometallurgical stepwise recovery of copper and zinc from smelting slag of waste brass in ammonium chloride solution

A new process for recycling zinc and copper from the smelting slag of waste brass was investigated in this study. The zinc and copper present in the smelting slag were dissolved in a ZnCl2–NH4Cl solution system. To recycle copper, the lixivium was purified by a novel method termed as electrochemistry and chemistry synergetic (ECS) purification. After deep purification of the ECS-treated lixivium by zinc powder cementation, zinc in the lixivium was extracted by electrowinning to obtain a zinc plate. The effects of the leaching temperature, reaction time, and liquid–solid ratio on the extraction percentages of zinc and copper were examined. The results revealed that the extraction percentages of zinc and copper were 88.37% and 90.85%, respectively, at a leaching temperature of 95 °C, reaction time of 90 min, and liquid–solid ratio of 8:1 mL/g. Further, effects of the current density, temperature, and reaction time on the recovery ratio of copper by ECS method were examined. The results revealed that 98.51% of copper could be extracted from the lixivium and that the purity of the extracted copper was 96.7% at a temperature of 70 °C and cathode current density of 75 A/m2 after a reaction for 4 h. In the deep purification process, 0.3 g/L zinc powder was used to completely remove impurities from the ECS-treated lixivium. In the zinc electrowinning process, a current efficiency of 95.79% was achieved at 70 °C and 400 A/m2; the purity of the obtained zinc product was greater than 99.95%, and the direct energy consumption was 2966.59 kW·h/t-Zn.

Selective Emulsion Liquid Membrane Extraction of Cu(II) Mediated by a Schiff Base Ligand

This study concerns on the application of a Schiff base ligand of type N3O2 as a carrier in a water-in-oil emulsion liquid membrane for the selective transport of copper ions. A hydrochloric acid solution formed the internal aqueous phase (receiving phase), and the membrane was composed of a Schiff base ligand called bis(1'-hydroxy-2'-acetonaphthone)-2,2'-diiminodiethylamine (L) in dichloromethane and the non-ionic surfactant Span® 80 in paraffin. By applying the optimum conditions, a quantitative uptake of copper ions (initial concentration 5 mg L-1) from the aqueous feed phase (pH 5) into the receiving phase (hydrochloric acid 0.7 mol L-1), after 10 min was attained. The optimal value determined for the treat ratio allows achieving to a concentration factor of >6 for the copper ions in the receiving phase. The proposed emulsion liquid membrane provided an excellent selectivity towards copper ions with respect to some associated metal ions including Cd(II), Ni(II), Zn(II), Co(II), Fe(II), and Cr(III). However, such selectivity was not observed in the competition of Cd(II) and Pb(II) ions. The breakage of emulsions and recovery of the internal phase from the membrane was performed by freezing the internal solution. In fact, the expansion of the frozen internal phase volume results in breakage of the emulsions. The applicability of the proposed procedure was appraised by employing the method for the recovery of copper from the leached solutions of the cobalt and nickel-cadmium filter-cakes of a zinc production plant.

Choosing sorbent for fluoride ion removal from zinc sulfate solutions

The process of zinc sulfate solution purification determines process, economic and environmental production results. Since recently there has been a constant increase in the content of halides in pregnant solutions of zinc production due to the processing of technogenic zinc-containing raw materials, it is relevant to search for methods for removing halides, in particular fluorine, from zinc solutions using a variety of materials. The purpose of this paper was to investigate the effectiveness of akaganeite as an sorbent for fluoride ion removal from zinc sulfate solutions. When using akaganeite, it is especially important to choose a carrier for the sorbent since the nanosized particles of akaganeite make it difficult to clean the solution from the sorbent. Most suitable carriers for this purpose in terms of surface characteristics and physicochemical properties are gypsum and red mud of alumina production. Experiments used a zinc sulfate solution (100 g/dm3 Zn2+, pH = 4.5) containing 26.8–111.4 mg/dm3 F–. The maximum fluoride ion capacity was shown by red mud due to the formation of F–Al complexes. The highest fluorine recovery was demonstrated by red mud with impregnated akaganeite at elevated temperature that facilitates showing akaganeite properties and accelerates the surface ОН– ↔ F– exchange process. The gypsum-based adsorbent successfully removed fluorine due to calcium ions released and calcium fluoride formed. The amount of fluorine removed depends on the sorbent material, its consumption, sorption duration and temperature. The optimal processing conditions were (at pH = 5.5): temperature – 60 °C, process duration – 120 min, composite sorbent consumption – 20÷30 g/dm3. It was shown that composite sorbents based on red mud or gypsum with impregnated akaganeite (β-FeOOH) are most suitable for cleaning zinc solutions from halides. These adsorbents make it possible to achieve the greatest capacity and degree of fluoride ion removal (up to 98–99 %) in the actual pH range of process solutions. The abovementioned sorbents can be regenerated in an alkali solution, and then reused (up to 3–4 cycles).

Based on the Virtual Screening of Multiple Pharmacophores, Docking and Molecular Dynamics Simulation Approaches toward the Discovery of Novel HPPD Inhibitors.

4-Hydroxyphenylpyruvate dioxygenase (HPPD) is an iron-dependent non-heme oxygenase involved in the catabolic pathway of tyrosine, which is an important enzyme in the transformation of 4-hydroxyphenylpyruvic acid to homogentisic acid, and thus being considered as herbicide target. Within this study, a set of multiple structure-based pharmacophore models for HPPD inhibitors were developed. The ZINC and natural product database were virtually screened, and 29 compounds were obtained. The binding mode of HPPD and its inhibitors obtained through molecular docking study showed that the residues of Phe424, Phe381, His308, His226, Gln307 and Glu394 were crucial for activity. Molecular-mechanics-generalized born surface area (MM/GBSA) results showed that the coulomb force, lipophilic and van der Waals (vdW) interactions made major contributions to the binding affinity. These efforts will greatly contribute to design novel and effective HPPD inhibitory herbicides.

The use of low-temperature secondary energy resources using heat transformers in non-ferrous metallurgy

The concepts of developing efficient and reliable schemes for the use of waste heat of low-potential energy resources in heat transformers (HT) are considered. Examples of using HT in several non-ferrous metallurgy plants in Russia and Kazakhstan are given: the production of nickel, zinc and ferroalloys. In the case of nickel production, two schemes are proposed for consideration: for summer and winter modes. The main object of study is a nickel production scheme using a lithium bromide absorption chiller (AbCh). Recycled water is the main source of utilized low-grade waste heat for AbCh. The cold obtained in AbCh is necessary for the technological process. The basic parameters were calculated under various extreme conditions, the energy effect of the modernization of the circuit was estimated, and equipment was selected. Studies have shown the feasibility of introducing AbCh into circuits with a large amount of waste heat. Low-grade heat utilization of nickel production using heat pump unit (HPU) in winter allows to obtain heat energy for heating water from the heating network and raw water for feeding the boiler house of a thermal power plant.Another example of HT use is a heat pump unit (HPU) in the production of zinc and ferroalloys. HPU is designed to heat feed water before chemical water purification and at the same time “cool down” the circulating water, which is then used on a series of electrolysis, replacing purchased artesian water. In winter, the heat produced at HPU is used for heating, ventilation and hot water supply, which allows to dispense with the services of a third-party thermal power plant.

Zinc concentrate internal circulation technology for elemental mercury recovery from zinc smelting flue gas

As most of the purposed synthesized mercury sorbents are expensive and insufficient for capturing mercury from the flue gas with ultrahigh concentration of Hg0 and SO2 in smelting processes, the application of sorbent injection for mercury removal in zinc smelting was extremely restricted. In this work, Zinc concentrate (ZC) ore, one of the raw materials for smelting, was developed to capture gaseous Hg0 from zinc smelting flue gas. The average Hg0 adsorption capacity of ZC was greater than 2 mg·g−1, even better than some synthetic binary sulfide sorbents. Meanwhile, ZC presented a good resistance to H2O and SO2 at 60–100 °C. Higher ratio of Cu element in ZC ores can result in better Hg0 adsorption performance due to the increase of active site Sn2− derived from the oxidation of S2− by Cu2+. After capture Hg0, spent ZC can be reused as raw material for zinc production, eliminating the generation of waste sorbent. This technology can as a co-benefit of condensation device to deeply purify mercury pollutants, and the excessive gaseous Hg0 will be removed from the system by condensing into liquid mercury. Moreover, such ZC cycles offers a specific strategy for gaseous Hg0 recovery in other nonferrous smelting industries.

Prediction of raceway shape in zinc blast furnace under the different blast parameters

Abstract The shape of raceway cavities in the Imperial Smelting Process plays an important role in zinc production; the effectiveness of this process is also improved because the deadman zone is changed. We present numerical simulations of the raceway based on a two-phase mathematical model. MFIX software is used to simulate the flue gas flow, combustion and gasification of coke particles in the raceway as these are the main phenomena that contribute to the shape of raceway cavities. The purpose of the paper is to describe changes in the shape of these cavities when the blast parameters are altered. Simulations with the blast volumetric flow ranging from 30,000 m N 3 /h to 35,000 m N 3 /h with different oxygen enrichment levels ranging from 400 m N 3 /h to 800 m N 3 /h were performed. The results showed that the change in depth of the cavities correlates with blast volume but not with oxygen enrichment. The height of the cavity correlates with both blast volume and oxygen enrichment. The shape of the deadman depends significantly on the blast volume, while oxygen enrichment does not play any substantial role in its depth or width.

Preparation of Petrochemical Feedstock from Rubber Wastes by Thermal Solvolysis

The thermal decomposition of crumb rubber based on isoprene pure rubber in an autoclave in various media such as toluene, isopropyl alcohol, and water has been studied. The highest degree of conversion of pure rubber is achieved in a toluene medium, while the lowest is in water. The formation of a gas is minimum in the aqueous medium and maximum in a medium of isopropyl alcohol; however, the yield of the gaseous products is much lower than in the processes of high-temperature pyrolysis of rubber. The fractional composition of the liquid products varies within a wide range, namely, more gasoline fractions are formed in the medium of toluene; oil fractions, in water; and middle distillates predominate in the products obtained in the isopropyl alcohol medium. The concentration of dipentene and p-cymene, which may be of interest as the feedstock for industrial organic synthesis, in the distillate fractions reaches 10–16 wt %. Unsaturated aliphatic structures predominate in the oil fractions obtained in the medium of water or isopropyl alcohol, while alkylbenzenes predominate in the “toluene” oils. The oil fractions can be of interest as a feedstock for the production of both lubricating and process oils. The solid carbonaceous residue from the thermal solvolysis of rubber contains not only untransformed carbon black, but also zinc oxide and sulfide, so that it can be sent to the production of zinc or be reused as a rubber filler.

Khandiza polymetallic ore washability study

Introduction. The article considers the results of operations research on the washability of polymetallic ore at Khandiza deposit. The results of the research of material composition are delivered together with the variants of process samples flotation at Khandiza deposit. Research aim is to study the material composition of ore samples and the development of effective technology of polymetallic ore concentration at Khandiza deposit. Methodology. Polymetallic ore of Khandiza deposit has been chosen as research subject. As part of the process various reagents have been used as well as various laboratory facilities, modern physical, physical-chemical and chemical methods of analysis. Research has been carried out in two direction: bulk flotation of all ore minerals with further selection of bulk concentrate to lead, zinc and copper concentrates and direct bulk selective flotation with the production of lead-copper and zinc concentrates in a successive order. Results. The outcomes of ore material composition study have been delivered based on spectral, chemical and rational analysis. It has been determined that industrially valuable ore components are lead, zinc and copper, the contents of which are presented. It has been shown that ore minerals are in tight twinning with nonmetallic minerals, i.e. quartz, sericite, chlorite, carbonate, etc. Summary. As a result of concentration, lead, zinc and copper concentrates have been dressed. The concentrated meet industrial requirements.