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Blister Copper

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L. B. Tsymbulov – 1st expert on this subject based on the ideXlab platform

  • BASIC CONROL PRINCIPLES OF A NEW PROCESS TECHNOLOGY FOR Copper MATTE CONVERTING IN A TWO-ZONE VANIUKOV FURNACE
    IFAC Proceedings Volumes, 2016
    Co-Authors: L. B. Tsymbulov, S. P. Pigarev, Florian Kongoli, Ian Mcbow

    Abstract:

    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.

  • 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), 2013
    Co-Authors: S. P. Pigarev, L. B. Tsymbulov, E. N. Selivanov, S. A. Istomin, V. M. Chumarev

    Abstract:

    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.

  • 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), 2012
    Co-Authors: S. P. Pigarev, L. B. Tsymbulov, Evgeny N. Selivanov, V. M. Chumarev, S. A. Krasikov

    Abstract:

    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.

N V Zlygosteva – 2nd expert on this subject based on the ideXlab platform

  • USING THEMETHODOLOGY OF CARCINOGENIC RISKS ASSESSMENT IN CopperPYROMETALLURGY
    Здоровье населения и среда обитания – ЗНиСО, 2020
    Co-Authors: V. I. Adrianovskiy, G. Ya. Lipatov, E A Kuzmina, N V Zlygosteva

    Abstract:

    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.

  • A SYSTEM APPROACH TO CARCINOGENIC RISK ASSESSMENT AND MANAGEMENT FOR METALLURGICAL WORKERS EMPLOYED IN VARIOUS Blister Copper PRODUCTION PROCESSES
    Hygiene and sanitation, 2019
    Co-Authors: V. I. Adrianovsky, N V Zlygosteva, E A Kuzmina, A. P. Boyarsky, G. Ya. Lipatov

    Abstract:

    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.

  • A comparative assessment of cancer-related mortality among workers employed at the various stages of pyrometallurgical production of Copper
    Occupational Health and Industrial Ecology, 2019
    Co-Authors: V. I. Adrianovskiy, N V Zlygosteva, G Y Lipatov, Yelena A. Kuz’mina, Tatyana S. Ustyugova, Irina I. Adamtseva, Aleksey A. Samylkin, Yekaterina Ye. Shmakova

    Abstract:

    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.

V. M. Chumarev – 3rd expert on this subject based on the ideXlab platform

  • 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), 2013
    Co-Authors: S. P. Pigarev, L. B. Tsymbulov, E. N. Selivanov, S. A. Istomin, V. M. Chumarev

    Abstract:

    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.

  • 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), 2012
    Co-Authors: S. P. Pigarev, L. B. Tsymbulov, Evgeny N. Selivanov, V. M. Chumarev, S. A. Krasikov

    Abstract:

    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.

  • 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), 2012
    Co-Authors: S. P. Pigarev, L. B. Tsymbulov, E. N. Selivanov, V. M. Chumarev

    Abstract:

    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.