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L. B. Tsymbulov - One of the best experts on this subject based on the ideXlab platform.
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BASIC CONROL PRINCIPLES OF A NEW PROCESS TECHNOLOGY FOR Copper MATTE CONVERTING IN A TWO-ZONE VANIUKOV FURNACE
IFAC Proceedings Volumes, 2016Co-Authors: L. B. Tsymbulov, S. P. Pigarev, Florian Kongoli, Ian McbowAbstract:Abstract The Gipronickel Institute in cooperation with OJSC “MMC “Norilsk Nickel” and Canadian Company Flogen Technologies Inc. has developed a new technology for continuous converting of Copper-nickel mattes and Copper concentrates coming from high-grade matte separation, with the production of Blister Copper, a slag of high Copper and nickel content and gases of high SO2 concentration. A two-zone Vaniukov furnace is used as a basic reactor for this process. This work presents the basic control principles of this new technological process obtained through thermodynamic and experimental studies.
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Structure and properties of the slags of continuous converting of Copper nickel-containing mattes and concentrates: IV. Influence of the slag temperature and composition on the slag melt viscosity
Russian Metallurgy (Metally), 2013Co-Authors: S. P. Pigarev, L. B. Tsymbulov, E. N. Selivanov, S. A. Istomin, V. M. ChumarevAbstract:The viscosities of the slags that form during the continuous converting of Copper mattes and concentrates into Blister Copper are determined. The compositions of SiO_2-CaO-Al_2O_3-FeO_ x -Cu_2O-NiO slag melts are varied over a wide range of (Fe + Ni) concentrations (25.5–40.2 wt %) and ratios SiO_2/CaO (0.25–3.9) and (Fe)/(Cu + Ni) (0.4–1.6). The slag viscosity is measured by a vibrational method in the temperature range 1050–1450°C. The viscosity of a homogeneous melt is shown to be 0.5–2.0 P, and it increases sharply below the primary solidification temperature.
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Structure and properties of the slags of continuous converting of Copper nickel-containing mattes and concentrates: III. Influence of the slag composition on the surface tension and density of slag melts
Russian Metallurgy (Metally), 2012Co-Authors: S. P. Pigarev, L. B. Tsymbulov, V. M. Chumarev, Evgeny N. Selivanov, S. A. KrasikovAbstract:The surface tension and density of the slags that form during the continuous converting of Copper mattes and concentrates into Blister Copper are determined. The slag melt compositions are varied over a wide range of (Fe + Ni) concentrations and SiO_2/CaO and (Fe)/(Cu + Ni) ratios. The surface tension and density are measured by the bubble pressure technique. The concentration of iron and nickel in a slag and the (Fe)/(Cu + Ni) and SiO_2/CaO ratios affect the density and surface tension.
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Structure and properties of the slags of continuous converting of Copper nickel-containing mattes and concentrates: II. Effect of the SiO_2/CaO ratio on the structure and liquidus temperature of the slags
Russian Metallurgy (Metally), 2012Co-Authors: S. P. Pigarev, L. B. Tsymbulov, E. N. Selivanov, V. M. ChumarevAbstract:The structure and liquidus temperature of the SiO_2-CaO-Al_2O_3-FeO_ x -Cu_2O-NiO slags that form during continuous converting of Copper mattes and concentrates into Blister Copper are analyzed. The slag melt compositions are varied over a wide SiO_2/CaO range. The slags are studied by X-ray diffraction, scanning electron microscopy, and electron-probe microanalysis. The liquidus temperature of the slags is determined by differential thermal analysis. It is found that, depending on the SiO_2/CaO ratio, the structure and liquidus temperature of the slags change and the forms of Copper in a slag also change. The SiO_2/CaO range in a slag is recommended for the process of continuous converting of a Copper nickel-containing sulfide raw materials.
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Structure and properties of the slags of continuous converting of Copper nickel-containing mattes and concentrates: I. Effect of the consumption of fluxing components on the structure and liquidus temperature of the slags
Russian Metallurgy (Metally), 2011Co-Authors: L. B. Tsymbulov, S. P. Pigarev, E. N. Selivanov, V. M. ChumarevAbstract:The structure and liquidus temperature of the SiO_2-CaO-Al_2O_3-FeO_ x -Cu_2O-NiO slags that form during continuous converting of Copper mattes and concentrates into Blister Copper in a Vanyukov furnace used as a melting unit are studied. The slag melt compositions are varied over wide limits of the total (Fe + Ni) and (SiO_2 + CaO) concentrations by changing the consumption of fluxing components. The slags are investigated by X-ray diffraction, scanning electron microscopy, and electron-probe microanalysis. The liquidus temperatures of the slags are determined by differential thermal analysis. It is found that, as the consumption of fluxing components changes, the concentration of iron-nickel spinels based on trevorite NiFe_2O_4 changes substantially and the forms of Copper change in the slags. The results obtained are used to recommend the optimum consumption of fluxing components for the process of continuous converting.
N V Zlygosteva - One of the best experts on this subject based on the ideXlab platform.
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USING THEMETHODOLOGY OF CARCINOGENIC RISKS ASSESSMENT IN CopperPYROMETALLURGY
Здоровье населения и среда обитания - ЗНиСО, 2020Co-Authors: V. I. Adrianovskiy, E A Kuzmina, G. Ya. Lipatov, N V ZlygostevaAbstract:We conducted a hygienic assessment of the chemical factors contribution of the production environment to the formation of carcinogenic risk of workers employed in the reverberatory and blast smelting of Copper-containing ores, compared with autogenous processes. Inorganic arsenic compounds have been shown to be a major factor forming a carcinogenic risk in Copper smelting. The greatest prognostic values of carcinogenic risk for similar professions of metallurgical shops are observed during reverberatory and blast smelting, rather than during bath smelting due to the difference in the equipment used. The main measure to reduce the carcinogenic risk of Blister Copper production should be the technical reequipment of smelters with the introduction of autogenous processes.
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A SYSTEM APPROACH TO CARCINOGENIC RISK ASSESSMENT AND MANAGEMENT FOR METALLURGICAL WORKERS EMPLOYED IN VARIOUS Blister Copper PRODUCTION PROCESSES
Hygiene and sanitation, 2019Co-Authors: V. I. Adrianovsky, E A Kuzmina, N V Zlygosteva, A. P. Boyarsky, G. Ya. LipatovAbstract:The paper presents results of the application of the system approach to carcinogenic risk assessment and management based on the identification carcinogens, prediction carcinogenic effects and rationale for targeted preventive and curative measures. Evidence from metallurgical shops where various Blister Copper production processes are used regardless of the existing smelting technologies shows the risk of cancer to be Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeingeptable even when the working conditions are classified as permissible (class 2) in terms of chemical factors. The highest carcinogenic risk values are observed for occupations with workplaces characterized by a significant release of dust, arsenic being the main risk contributor. In cases of the blast furnace and reverberatory furnace smelting, carcinogenic risks for workers with a 25-year length of employment exceed the permissible level by 17.6 and 28.8 times, respectively, and in the case of bath smelting, carcinogenic risks exceed the permissible level by 5.1 times. The maximum length of employment for bath smelting shop workers amounts to 5.14 years, being by 1.42 and 0.89 years higher than that for the blast furnace and reverberatory furnace smelting shop workers, respectively. The observed cancer mortality rates exceed significantly the expected mortality rates for the tumor of all sites in cases of combined and respiratory cancers. The highest cancer mortality rates were recorded for batch loaders (60%) and smelter (40%) with the highest predicted carcinogenic risk values. Cancer-specific marker levels higher normal ones were detected in 73% of workers from the increased individual carcinogenic risk group. The proposed system approach to carcinogenic risk assessment and management will make it possible to try out components of the risk-based approach in the supervisory activities at industrial facilities with exposure to carcinogens, to establish the acceptable risk levels depending on the length of employment, identify the priority carcinogens; it will also allow indicating a rationale for additional testing for occupational carcinogenesis predictors as part of routine medical examination procedures and to develop preventive measures against key risk factors.
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A comparative assessment of cancer-related mortality among workers employed at the various stages of pyrometallurgical production of Copper
Occupational Health and Industrial Ecology, 2019Co-Authors: V. I. Adrianovskiy, G Y Lipatov, N V Zlygosteva, Yelena A. Kuz’mina, Tatyana S. Ustyugova, Irina I. Adamtseva, Aleksey A. Samylkin, Yekaterina Ye. ShmakovaAbstract:The authors present comparative evaluation of influence caused by complex of carcinogenic work conditions of main stages of Copper pyrometallic production on cancer-related mortality of the workers. Findings are that raw Copper enrichment, Blister Copper recovery through reverberative furnace melting and f re refining of Blister Copper are carcinogenic danger for the workers. Malignancies frequency in the workers appeared to directly depend on occupational exposure to arsenic. The results of the workers’ cancer-related mortality correspond to data of carcinogenic risks evaluation at all stages of metallurgic production of Copper. Given the study results, reasonable suggestion is to include raw Copper enrichment into official list of occupational processes with carcinogenic danger.
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applying of technique for assessing occupational cancerogenic risks for workers used in metallurgical shops with different methods of Blister Copper production
Journal of Global Oncology, 2018Co-Authors: V Adrianovskii, G Y Lipatov, E A Kuzmina, N V ZlygostevaAbstract:Background: Exposure to carcinogens at workers used in the enterprises of Copper metallurgy making urgent the task of assessing carcinogenic risks in the nonferrous metallurgy. In particular, melting and conversion of Copper are characterized by the exposure of arsenic, cadmium, lead, nickel, benz(a)pyrene. Aim: Assessment of professional carcinogenic risks for workers used in shops with a shaft and reflective Copper smelting ore, compared with one of the modern methods of producing Blister Copper. Carcinogenic risk was estimated from each of the substances and in total from their combination for 25 years of work experience. When inappropriate carcinogen risk calculated duration time of operation, at which the allowable upper limit of occupational risk. Methods: A hygienic assessment of the contribution of the working environment to the formation of a carcinogenic risk for workers engaged in reverberatory and blast smelting of Copper-bearing ores in comparison with autogenous processes was carried out. To...
V. M. Chumarev - One of the best experts on this subject based on the ideXlab platform.
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Structure and properties of the slags of continuous converting of Copper nickel-containing mattes and concentrates: IV. Influence of the slag temperature and composition on the slag melt viscosity
Russian Metallurgy (Metally), 2013Co-Authors: S. P. Pigarev, L. B. Tsymbulov, E. N. Selivanov, S. A. Istomin, V. M. ChumarevAbstract:The viscosities of the slags that form during the continuous converting of Copper mattes and concentrates into Blister Copper are determined. The compositions of SiO_2-CaO-Al_2O_3-FeO_ x -Cu_2O-NiO slag melts are varied over a wide range of (Fe + Ni) concentrations (25.5–40.2 wt %) and ratios SiO_2/CaO (0.25–3.9) and (Fe)/(Cu + Ni) (0.4–1.6). The slag viscosity is measured by a vibrational method in the temperature range 1050–1450°C. The viscosity of a homogeneous melt is shown to be 0.5–2.0 P, and it increases sharply below the primary solidification temperature.
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Structure and properties of the slags of continuous converting of Copper nickel-containing mattes and concentrates: III. Influence of the slag composition on the surface tension and density of slag melts
Russian Metallurgy (Metally), 2012Co-Authors: S. P. Pigarev, L. B. Tsymbulov, V. M. Chumarev, Evgeny N. Selivanov, S. A. KrasikovAbstract:The surface tension and density of the slags that form during the continuous converting of Copper mattes and concentrates into Blister Copper are determined. The slag melt compositions are varied over a wide range of (Fe + Ni) concentrations and SiO_2/CaO and (Fe)/(Cu + Ni) ratios. The surface tension and density are measured by the bubble pressure technique. The concentration of iron and nickel in a slag and the (Fe)/(Cu + Ni) and SiO_2/CaO ratios affect the density and surface tension.
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Structure and properties of the slags of continuous converting of Copper nickel-containing mattes and concentrates: II. Effect of the SiO_2/CaO ratio on the structure and liquidus temperature of the slags
Russian Metallurgy (Metally), 2012Co-Authors: S. P. Pigarev, L. B. Tsymbulov, E. N. Selivanov, V. M. ChumarevAbstract:The structure and liquidus temperature of the SiO_2-CaO-Al_2O_3-FeO_ x -Cu_2O-NiO slags that form during continuous converting of Copper mattes and concentrates into Blister Copper are analyzed. The slag melt compositions are varied over a wide SiO_2/CaO range. The slags are studied by X-ray diffraction, scanning electron microscopy, and electron-probe microanalysis. The liquidus temperature of the slags is determined by differential thermal analysis. It is found that, depending on the SiO_2/CaO ratio, the structure and liquidus temperature of the slags change and the forms of Copper in a slag also change. The SiO_2/CaO range in a slag is recommended for the process of continuous converting of a Copper nickel-containing sulfide raw materials.
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Structure and properties of the slags of continuous converting of Copper nickel-containing mattes and concentrates: I. Effect of the consumption of fluxing components on the structure and liquidus temperature of the slags
Russian Metallurgy (Metally), 2011Co-Authors: L. B. Tsymbulov, S. P. Pigarev, E. N. Selivanov, V. M. ChumarevAbstract:The structure and liquidus temperature of the SiO_2-CaO-Al_2O_3-FeO_ x -Cu_2O-NiO slags that form during continuous converting of Copper mattes and concentrates into Blister Copper in a Vanyukov furnace used as a melting unit are studied. The slag melt compositions are varied over wide limits of the total (Fe + Ni) and (SiO_2 + CaO) concentrations by changing the consumption of fluxing components. The slags are investigated by X-ray diffraction, scanning electron microscopy, and electron-probe microanalysis. The liquidus temperatures of the slags are determined by differential thermal analysis. It is found that, as the consumption of fluxing components changes, the concentration of iron-nickel spinels based on trevorite NiFe_2O_4 changes substantially and the forms of Copper change in the slags. The results obtained are used to recommend the optimum consumption of fluxing components for the process of continuous converting.
S. P. Pigarev - One of the best experts on this subject based on the ideXlab platform.
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BASIC CONROL PRINCIPLES OF A NEW PROCESS TECHNOLOGY FOR Copper MATTE CONVERTING IN A TWO-ZONE VANIUKOV FURNACE
IFAC Proceedings Volumes, 2016Co-Authors: L. B. Tsymbulov, S. P. Pigarev, Florian Kongoli, Ian McbowAbstract:Abstract The Gipronickel Institute in cooperation with OJSC “MMC “Norilsk Nickel” and Canadian Company Flogen Technologies Inc. has developed a new technology for continuous converting of Copper-nickel mattes and Copper concentrates coming from high-grade matte separation, with the production of Blister Copper, a slag of high Copper and nickel content and gases of high SO2 concentration. A two-zone Vaniukov furnace is used as a basic reactor for this process. This work presents the basic control principles of this new technological process obtained through thermodynamic and experimental studies.
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Structure and properties of the slags of continuous converting of Copper nickel-containing mattes and concentrates: IV. Influence of the slag temperature and composition on the slag melt viscosity
Russian Metallurgy (Metally), 2013Co-Authors: S. P. Pigarev, L. B. Tsymbulov, E. N. Selivanov, S. A. Istomin, V. M. ChumarevAbstract:The viscosities of the slags that form during the continuous converting of Copper mattes and concentrates into Blister Copper are determined. The compositions of SiO_2-CaO-Al_2O_3-FeO_ x -Cu_2O-NiO slag melts are varied over a wide range of (Fe + Ni) concentrations (25.5–40.2 wt %) and ratios SiO_2/CaO (0.25–3.9) and (Fe)/(Cu + Ni) (0.4–1.6). The slag viscosity is measured by a vibrational method in the temperature range 1050–1450°C. The viscosity of a homogeneous melt is shown to be 0.5–2.0 P, and it increases sharply below the primary solidification temperature.
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Structure and properties of the slags of continuous converting of Copper nickel-containing mattes and concentrates: III. Influence of the slag composition on the surface tension and density of slag melts
Russian Metallurgy (Metally), 2012Co-Authors: S. P. Pigarev, L. B. Tsymbulov, V. M. Chumarev, Evgeny N. Selivanov, S. A. KrasikovAbstract:The surface tension and density of the slags that form during the continuous converting of Copper mattes and concentrates into Blister Copper are determined. The slag melt compositions are varied over a wide range of (Fe + Ni) concentrations and SiO_2/CaO and (Fe)/(Cu + Ni) ratios. The surface tension and density are measured by the bubble pressure technique. The concentration of iron and nickel in a slag and the (Fe)/(Cu + Ni) and SiO_2/CaO ratios affect the density and surface tension.
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Structure and properties of the slags of continuous converting of Copper nickel-containing mattes and concentrates: II. Effect of the SiO_2/CaO ratio on the structure and liquidus temperature of the slags
Russian Metallurgy (Metally), 2012Co-Authors: S. P. Pigarev, L. B. Tsymbulov, E. N. Selivanov, V. M. ChumarevAbstract:The structure and liquidus temperature of the SiO_2-CaO-Al_2O_3-FeO_ x -Cu_2O-NiO slags that form during continuous converting of Copper mattes and concentrates into Blister Copper are analyzed. The slag melt compositions are varied over a wide SiO_2/CaO range. The slags are studied by X-ray diffraction, scanning electron microscopy, and electron-probe microanalysis. The liquidus temperature of the slags is determined by differential thermal analysis. It is found that, depending on the SiO_2/CaO ratio, the structure and liquidus temperature of the slags change and the forms of Copper in a slag also change. The SiO_2/CaO range in a slag is recommended for the process of continuous converting of a Copper nickel-containing sulfide raw materials.
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Structure and properties of the slags of continuous converting of Copper nickel-containing mattes and concentrates: I. Effect of the consumption of fluxing components on the structure and liquidus temperature of the slags
Russian Metallurgy (Metally), 2011Co-Authors: L. B. Tsymbulov, S. P. Pigarev, E. N. Selivanov, V. M. ChumarevAbstract:The structure and liquidus temperature of the SiO_2-CaO-Al_2O_3-FeO_ x -Cu_2O-NiO slags that form during continuous converting of Copper mattes and concentrates into Blister Copper in a Vanyukov furnace used as a melting unit are studied. The slag melt compositions are varied over wide limits of the total (Fe + Ni) and (SiO_2 + CaO) concentrations by changing the consumption of fluxing components. The slags are investigated by X-ray diffraction, scanning electron microscopy, and electron-probe microanalysis. The liquidus temperatures of the slags are determined by differential thermal analysis. It is found that, as the consumption of fluxing components changes, the concentration of iron-nickel spinels based on trevorite NiFe_2O_4 changes substantially and the forms of Copper change in the slags. The results obtained are used to recommend the optimum consumption of fluxing components for the process of continuous converting.
E A Kuzmina - One of the best experts on this subject based on the ideXlab platform.
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USING THEMETHODOLOGY OF CARCINOGENIC RISKS ASSESSMENT IN CopperPYROMETALLURGY
Здоровье населения и среда обитания - ЗНиСО, 2020Co-Authors: V. I. Adrianovskiy, E A Kuzmina, G. Ya. Lipatov, N V ZlygostevaAbstract:We conducted a hygienic assessment of the chemical factors contribution of the production environment to the formation of carcinogenic risk of workers employed in the reverberatory and blast smelting of Copper-containing ores, compared with autogenous processes. Inorganic arsenic compounds have been shown to be a major factor forming a carcinogenic risk in Copper smelting. The greatest prognostic values of carcinogenic risk for similar professions of metallurgical shops are observed during reverberatory and blast smelting, rather than during bath smelting due to the difference in the equipment used. The main measure to reduce the carcinogenic risk of Blister Copper production should be the technical reequipment of smelters with the introduction of autogenous processes.
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Results of dust factor in Copper pyrometallurgy
Hygiene and sanitation, 2019Co-Authors: V. I. Adrianovskiy, G. Ya. Lipatov, N. V. Zebzeeva, E A KuzminaAbstract:The dust entering the air of the working zone of metallurgical shops was shown to be presented by a disintegration aerosols originating in crushing and transporting ore materials and condensation occurring in the course of smelting, converting and fire-refining Copper. The overwhelming majority of the grains have a size of 2,1-5,0 mm, which determines a fixed condition of the presence of given dust in the working area, its long presence in the deeper parts of the respiratory system. At the preparatory stages in the composition of the dust there are presented significant amounts of crystalline silicon dioxide possessing of the fibrogenic impact on the body. In the dust the presence of the crystalline silicon dioxide, arsenic, nickel, cadmium determines its carcinogenic hazard. The elevated dustiness of the air is noted with the reflective and especially mine melting, due to the imperfection of the technological equipment and sanitary technical devices. Autogenous smelting processes have demonstrated their hygienic advantage over outdated methods of producing Blister Copper (mining and smelting reflectivity.
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A SYSTEM APPROACH TO CARCINOGENIC RISK ASSESSMENT AND MANAGEMENT FOR METALLURGICAL WORKERS EMPLOYED IN VARIOUS Blister Copper PRODUCTION PROCESSES
Hygiene and sanitation, 2019Co-Authors: V. I. Adrianovsky, E A Kuzmina, N V Zlygosteva, A. P. Boyarsky, G. Ya. LipatovAbstract:The paper presents results of the application of the system approach to carcinogenic risk assessment and management based on the identification carcinogens, prediction carcinogenic effects and rationale for targeted preventive and curative measures. Evidence from metallurgical shops where various Blister Copper production processes are used regardless of the existing smelting technologies shows the risk of cancer to be Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeingeptable even when the working conditions are classified as permissible (class 2) in terms of chemical factors. The highest carcinogenic risk values are observed for occupations with workplaces characterized by a significant release of dust, arsenic being the main risk contributor. In cases of the blast furnace and reverberatory furnace smelting, carcinogenic risks for workers with a 25-year length of employment exceed the permissible level by 17.6 and 28.8 times, respectively, and in the case of bath smelting, carcinogenic risks exceed the permissible level by 5.1 times. The maximum length of employment for bath smelting shop workers amounts to 5.14 years, being by 1.42 and 0.89 years higher than that for the blast furnace and reverberatory furnace smelting shop workers, respectively. The observed cancer mortality rates exceed significantly the expected mortality rates for the tumor of all sites in cases of combined and respiratory cancers. The highest cancer mortality rates were recorded for batch loaders (60%) and smelter (40%) with the highest predicted carcinogenic risk values. Cancer-specific marker levels higher normal ones were detected in 73% of workers from the increased individual carcinogenic risk group. The proposed system approach to carcinogenic risk assessment and management will make it possible to try out components of the risk-based approach in the supervisory activities at industrial facilities with exposure to carcinogens, to establish the acceptable risk levels depending on the length of employment, identify the priority carcinogens; it will also allow indicating a rationale for additional testing for occupational carcinogenesis predictors as part of routine medical examination procedures and to develop preventive measures against key risk factors.
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applying of technique for assessing occupational cancerogenic risks for workers used in metallurgical shops with different methods of Blister Copper production
Journal of Global Oncology, 2018Co-Authors: V Adrianovskii, G Y Lipatov, E A Kuzmina, N V ZlygostevaAbstract:Background: Exposure to carcinogens at workers used in the enterprises of Copper metallurgy making urgent the task of assessing carcinogenic risks in the nonferrous metallurgy. In particular, melting and conversion of Copper are characterized by the exposure of arsenic, cadmium, lead, nickel, benz(a)pyrene. Aim: Assessment of professional carcinogenic risks for workers used in shops with a shaft and reflective Copper smelting ore, compared with one of the modern methods of producing Blister Copper. Carcinogenic risk was estimated from each of the substances and in total from their combination for 25 years of work experience. When inappropriate carcinogen risk calculated duration time of operation, at which the allowable upper limit of occupational risk. Methods: A hygienic assessment of the contribution of the working environment to the formation of a carcinogenic risk for workers engaged in reverberatory and blast smelting of Copper-bearing ores in comparison with autogenous processes was carried out. To...
