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  • Erratum to: FTIR and Raman Spectroscopy Characterization of Coking Coals with Diverse Coalification
    Coke Chem. Pub Date : 2020-07-07
    Shao-Jing Yang, Qing Hai Pang, Tai-Xu Xu, Zhi-Jun He, Teng-Fei Song, Jun-Hong Zhang

    erratum

    更新日期:2020-07-07
  • New Technical Solutions for the Automation of Technological Processes of Coke Oven Plant Facilities
    Coke Chem. Pub Date : 2020-07-07
    K. G. Lavrov, B. I. Beshenchev, D. A. Kharlov, M. A. Gorenbukh, K. V. Osipovych, A. S. Tsikhotsky

    Abstract— Designs are proposed for use in the automatic quenching of coke hot spots on conveyers and in automatic loading of fine coke in railroad cars.

    更新日期:2020-07-07
  • Sorption of Metal Cations by Lignite and Humic Acids
    Coke Chem. Pub Date : 2020-07-07
    S. I. Zherebtsov, N. V. Malyshenko, K. S. Votolin, Z. R. Ismagilov

    Abstract— The possibility of using readily available materials—Tyul’gansk lignite, Tisul’sk lignite (and its naturally oxidized form), humic acids, and coal residues after humic-acid extraction—in the sorption of copper, cobalt, manganese, and zinc cations from aqueous solutions is considered. Their effectiveness as sorbents is assessed by means of IR Fourier spectroscopy, ESR, Raman scattering, and

    更新日期:2020-07-07
  • Calorific Value of Coke. 4. Size Distribution
    Coke Chem. Pub Date : 2020-07-07
    I. V. Miroshnichenko, D. V. Miroshnichenko, I. V. Shulga, Y. S. Balaeva, A. V. Tsygankov

    Abstract—The gross calorific value of wet-quenched blast-furnace coke fluctuates significantly as a function of the piece size. It is greatest for the <25 mm size class: 33.0 MJ/kg or more. The degree of conditioning of the coke, assessed in terms of the volatile matter and its actual density, has considerable influence on the gross calorific value. The less conditioned blast-furnace coke obtained

    更新日期:2020-07-07
  • Ash Composition in the Combustion of Promising Slurry Fuels
    Coke Chem. Pub Date : 2020-07-07
    G. S. Nyashina, M. A. Kurgankina, M. R. Akhmetshin, V. V. Medvedev

    Abstract—Of all the traditional energy sources (coal, natural gas, fuel oil, and petroleum), coal has the greatest environmental impact. Coal combustion at thermal power plants produces copious atmospheric emissions, as well as ash and slag. The discovery of new fuels is a high priority at present. One possibility is the use of industrial wastes. Composite liquid fuels could permit the use of coal-mining

    更新日期:2020-07-07
  • Packing Density of Coal in Open Storage at AO Ural Steel
    Coke Chem. Pub Date : 2020-07-07
    A. Ya. Eremin, M. V. Zorin, S. P. Zubov, S. G. Tober, E. V. Selin, E. A. Gribanov

    Abstract—A method of determining the packing density of coal concentrates in open storage is proposed and tested at AO Ural Steel. The variation in packing density over the height and length of the coal stack is determined. A protocol is developed for determining the packing density of coal concentrates in open storage.

    更新日期:2020-07-07
  • Maximizing Benzene Extraction in Coke Production by Automatic Control
    Coke Chem. Pub Date : 2020-07-07
    B. N. Parsunkin, S. M. Andreev, A. R. Bondareva, I. I. Vasilev

    Abstract—It is established that optimizing extremal control of benzene distillation is expedient so as to maximize its extraction from absorbing oil. An effective method is described for finding the maximum possible benzene extraction, with appropriate regulation of the steam supply to the distillation column so as to permit dynamic temperature control. Simulation of the search process verifies the

    更新日期:2020-07-07
  • Influence of Cu(NO 3 ) 2 Activator and Gas Composition on the Thermal Decomposition of Coal and Lignite
    Coke Chem. Pub Date : 2020-07-07
    K. B. Larionov, I. V. Mishakov, K. V. Slyusarskiy, S. V. Lavrinenko, A. A. Gromov, A. A. Vedyagin

    Abstract The thermal transformation of coal and lignite in the presence of Cu(NO3)2 activator (5 wt %) is investigated as a function of the atmospheric composition. The copper nitrate is supported on to the samples by the incipient wetness with Cu(NO3)2 solution in water and alcohol. The effect of the activator is studied as a function of the gas (air/argon) composition, by thermogravimetric analysis

    更新日期:2020-07-07
  • Tests of Sinterol Reagent in Flotation at OOO MMK-Ugol
    Coke Chem. Pub Date : 2020-07-07
    V. N. Petukhov, A. N. Smirnov, N. Yu. Svechnikova, A. P. Shulga, V. G. Dundukov

    Abstract The flotation conditions for coal with different mineral content of the organic component are studied in the laboratory. The reagent protocol developed, which includes Sinterol modifier, is industrially tested. The results indicate that, if Sinterol is added at a rate of (1.0–3.0) ×10–3 kg/t of coal fines, the extraction of the coal’s combustible mass in the concentrate is increased; the process

    更新日期:2020-07-07
  • Express Method of Determining the Softening Point of Petroleum Pitch
    Coke Chem. Pub Date : 2020-06-03
    P. V. Kugatov, A. E. Raznoushkin, B. S. Zhirnov, A. E. Eremenko, D. S. Dryndina

    Abstract A capillary method is proposed for determining the softening point of petroleum pitch. A pitch sample is heated in a glass capillary by an air flux and observed under a microscope. The softening point is measured at the instant when the pitch within the capillary shrinks and pulls away from the glass walls. The method is tested for two series of petroleum pitch samples: one is derived from

    更新日期:2020-06-03
  • Influence of Gas Microbubbles on the Wettability of Coal Surfaces
    Coke Chem. Pub Date : 2020-06-03
    Yu. F. Patrakov, S. A. Semenova, T. A. Papina

    Abstract Using low-ash OS coal as a model, a method is developed for creating a hydrophobic coal surface by means of microbubbles in a gas–liquid suspension. Air microbubbles are generated by decompression. The influence of the pressure in the gas saturation of water on the size and stability of the microbubbles is established. It is shown that, in the presence of microbubbles, a hydrophobic air layer

    更新日期:2020-06-03
  • Granulation of Coal Pitch at OAO Altai-Koks
    Coke Chem. Pub Date : 2020-06-03
    M. A. Solov’ev, N. Yu. Chebotarev, E. I. Kudryavtsev, N. I. Manekina, A. V. Obyshchak

    Abstract The construction and operation of granulation systems for coal pitch at OAO Altai-Koks is considered. Such systems improve the storage and transportation of coal pitch.

    更新日期:2020-06-03
  • X-Ray Structural Analysis of Vitrinites in Coal at Different Metamorphic Stages
    Coke Chem. Pub Date : 2020-06-03
    A. N. Popova, N. I. Fedorova, Z. R. Ismagilov

    Abstract By X-ray structural analysis, the following structural parameters of vitrinite concentrates from coal of different metamorphic stages are determined: the number of carbon atoms in each lamella (nC), the width of the lamellas (La), their stacking height (Lc), the number of polyaromatic layers in each stack (N), and the packing density of the lamellas (ρ). Later metamorphic stages are associated

    更新日期:2020-06-03
  • Production of Lithium Hydroxide and Lithium Carbonate from Spent Lithium Batteries
    Coke Chem. Pub Date : 2020-06-03
    V. I. Nazarov, A. M. Gonopolsky, D. A. Makarenkov, M. I. Klyushenkova, A. P. Popov

    Abstract A disposal technology for lithium batteries with minimal environmental impact is proposed. Ground battery components are processed in five stages, to produce mechanically activated powder. Attention focuses on two stages: leaching; and purification and concentration of the lithium hydroxide and carbonate in a high-pressure membrane unit. Theoretical principles are outlined for mechanical–chemical

    更新日期:2020-06-03
  • Corrosion Resistance of New Duplex Stainless Steels in Coke Production
    Coke Chem. Pub Date : 2020-06-03
    S. V. Nesterenko

    Abstract The corrosion resistance of SAF 2507 duplex stainless steel and 254 SMO superaustenitic steel is studied in aggressive sulfuric-acid solutions (mother liquor) from sulfate departments; in aggressive media from arsenic–soda desulfurization; and in coke-shop media (from the quenching car and quenching tower). Gravimetric tests are conducted in accordance with State Standard GOST 9.908–85. The

    更新日期:2020-06-03
  • Effects of Different Experimental Conditions on the Micropore Characteristics of Coal
    Coke Chem. Pub Date : 2020-06-03
    Huan Cheng, Yinghua Liang, Yijun Zeng, Shiyong Chao, Yi Gu, Dewen Kong

    Abstract Low-temperature nitrogen adsorption experiment is widely used to analysis the micropore characteristics of coal. Effects of different experimental conditions including degassing time, degassing temperature, sample weight and sample particle size on the micropore characteristics of a middle rank coking coal produced in Shanxi Province, China was investigated to confirm the optimum experimental

    更新日期:2020-06-03
  • Applications of Gas Coal: A Review
    Coke Chem. Pub Date : 2020-06-03
    S. V. Fatenko, D. V. Miroshnichenko, I. V. Shulga

    Abstract As in most countries, the applications of coal in Ukraine do not match its availability: the reserves consist mainly of coal of poor metamorphic development, which is in limited demand. The use of gas coal in coke production is largely associated with new coal-preparation and coking technologies: in particular, molded coke, heat treatment, and stamp charging. Gas coal is preferred for gasification

    更新日期:2020-06-03
  • Microbubble Modification of Coal Surfaces before Flotation
    Coke Chem. Pub Date : 2020-04-27
    Yu. F. Patrakov, S. A. Semenova, Yu. A. Kharlampenkova

    Abstract The flotation of coking coal after treatment of the coal pulp by microbubbles is investigated. Differential granulometric analysis indicates that, when using air microbubbles, the flotation of small coal particles (<50 μm) predominates. The effectiveness of flotation of small coal fractions (<0.1 mm) by microbubbles, without reagent, is comparable with that attained when using traditional

    更新日期:2020-04-27
  • Gas Liberation in the High-Temperature Isothermal Holding of Coke Residues
    Coke Chem. Pub Date : 2020-04-27
    S. G. Stakheev, A. Ya. Eremin, E. G. Zolotareva

    Abstract The dynamics of nitrogen, hydrogen, and carbon-monoxide liberation in the isothermal holding of coke residues from G, Zh, KO, KS, and T coal at 1000°C is studied in experiments after heating at 10°C/min. The gas liberation in isothermal holding continues throughout the experiment (2 h). The rate of gas liberation declines exponentially in the course of holding. The rates of H2 and CO emission

    更新日期:2020-04-27
  • Prediction and Control of Coke Plant Wastewater Quality using Machine Learning Techniques
    Coke Chem. Pub Date : 2020-04-27
    Himanshu Khandelwal, Shweta Shrivastava, Adity Ganguly, Abhijit Roy

    Abstract The present study focuses on examining the fate of coal constituents—carbon, sulphur, nitrogen and chlorine from coal blend to coke oven wastewater. Further, the impact of coal constituents and coke making process on wastewater quality has studied and analyzed the effects with plant data. Understanding helps in development of coke oven wastewater quality prediction model using machine learning

    更新日期:2020-04-27
  • Change in Molecular Mass of Pitch on Thermodestructive Polycondensation of Heavy Pyrolysis Tar
    Coke Chem. Pub Date : 2020-04-27
    A. A. Mukhamedzianova, I. A. Ikhsanov, N. Yu. Beilina

    Abstract By determining the molecular mass of pitch from heavy pirolysis tar, additional information may be obtained regarding the thermal polycondensation and quality of pitch. The weighted mean molecular mass of toluene-soluble components of the pirolysis pitch is determined by gel-permeation chromatography. The molecular mass of the components in specific petroleum-pitch fractions is studied as

    更新日期:2020-04-27
  • Quality and Utility of Shubarkol Shale from Kazakhstan
    Coke Chem. Pub Date : 2020-04-27
    V. M. Strakhov

    Abstract The quality of Shubarkol carbonaceous shale from Kazakhstan is studied by state-of-the-art methods, with particular attention to its composition, its mineral composition, and its chemical, petrographic, physicochemical, and thermomechanical properties. According to one industrial classification, the shale is of humic–sapropelic type in genetic terms; it consists primarily of sorbomixtinite

    更新日期:2020-04-27
  • An Informational Systems Approach to Optimal Organization of Complex Technological Processes
    Coke Chem. Pub Date : 2020-04-27
    V. A. Naletov, M. B. Glebov

    Abstract The basic principles of an information-based systems approach to optimal organization of complex industrial processes with a hierarchical structure are outlined, for the example of systems in chemical technology. General laws of the development of living things can be employed. In particular, Roullier’s evolutionary law of growing system complexity in the organization of organisms is applied

    更新日期:2020-04-27
  • Composition and Structure of Hexane-Insoluble Asphaltenes from Coal Pitch
    Coke Chem. Pub Date : 2020-04-27
    S. A. Sozinov, L. V. Sotnikova, A. N. Popova, L. M. Hitsova, S. Yu. Lyrschikov, O. S. Efimova, V. Yu. Malysheva, D. M. Rusakov

    Abstract The functional-group composition and structure of hexane-insoluble asphaltenes from coal pitch are studied. The methods employed are chemical (elemental) analysis, nuclear magnetic resonance (NMR), IR spectroscopy, scanning electron microscopy, X-ray phase analysis, and differential thermal analysis in combination with chromatography and mass spectrometry. Analysis of the results shows that

    更新日期:2020-04-27
  • Production of Isotropic Coal from Shale-Waste Oil
    Coke Chem. Pub Date : 2020-04-09
    A. L. Abaturov, I. V. Moskalev, D. M. Kiselkov, V. N. Strelnikov

    Abstract—Isotropic coke is needed for the production of fine-grain graphite, which is employed throughout industry. In turn, isotropic coke may be produced from the residues obtained in atmospheric distillation of shale tar, after their thermal oxidation. The formation of isotropic coke by the carbonization of such thermally oxidized residues was considered in [1–3]. In the present work, the production

    更新日期:2020-04-09
  • Structural Aspects of the Coalification of Organic Materials
    Coke Chem. Pub Date : 2020-04-09
    A. A. Dmitrienko, E. R. Isayeva

    Abstract—Coal beds and coal sheets in oil fields consist of coalified material, with similarities and differences due to the conditions in which it was formed. Coal petrography is widely used to assess the properties of coal, and IR spectroscopy is being actively introduced. In tests, the vitrinite reflection coefficient and maceral composition are measured by microscopy and IR spectroscopy for core

    更新日期:2020-04-09
  • Study on NO x Emission Reduction in Coke Combustion and Sintering Process
    Coke Chem. Pub Date : 2020-04-09
    Song Han, Lin Dong, Zhiping Lei, Aiming Ke, Con Shi, Jing Chong Yan, Zhanku Li, Shigang Kang, Hengfu Shui, Zhicai Wang, Shibiao Ren, Chunxiu Pan

    Abstract The NOx in the exhaust gas emitted from the coke combustion and sintering process has a serious impact on the environment. How to reduce the release of NOx in the combustion of coke has become a major problem to be solved. Adding a certain amount of catalyst to the coke combustion process can not only effectively improve the combustion efficiency of coke but also reduce the NOx emissions.

    更新日期:2020-04-09
  • Action of Water Vapor in the High-Temperature Hydrogenation of a Mixture of Coke-Plant Benzene and the Naphthalene Fraction of Coal Tar
    Coke Chem. Pub Date : 2020-04-09
    Zh. K. Kairbekov, N. T. Smagulova, A. S. Maloletnev

    Abstract—In the catalytic high-temperature hydrogenation (hydrodealkylation) of a mixture of raw coke-plant benzene and the 180–230°C naphthalene fraction of coal tar, water vapor (steam) acts in two ways: it blocks the smallest pores in the catalyst, from which the removal of products is difficult; and it facilitates their desorption from the large pores, thereby decreasing the likelihood of polymerization

    更新日期:2020-04-09
  • Calorific Value of Coke. 3. Influence of Coal Storage
    Coke Chem. Pub Date : 2020-04-09
    I. V. Miroshnichenko, D. V. Miroshnichenko, I. V. Shulga, Y. S. Balaeva

    Abstract—The possibility of increasing the calorific value of coke from oxidized coal is established experimentally and confirmed theoretically. This entails the use of measures already developed for the rational use of oxidized coal in coking—in particular, with a view to ensuring the required coke quality. The influence of the elemental composition, actual and apparent density, porosity, and proportions

    更新日期:2020-04-09
  • Production of Carbon Materials from Nonclinkering Coal in Electric Roasting Furnaces
    Coke Chem. Pub Date : 2020-04-09
    I. M. Kashlev, V. M. Strakhov

    Abstract—This article addresses the production of carbon materials in an electric roasting furnace, which is a universal device covering a broad temperature range (500–1400°C). It is simple in structure, completely automatic, and characterized by high productivity and economic efficiency. Pieces of nonclinkering D, SS, T, and A coal may be heated in such furnaces. In appropriate conditions, coke may

    更新日期:2020-04-09
  • Characteristics of High-Temperature Coking Tar of Volatile-Rich Petroleum Coke
    Coke Chem. Pub Date : 2020-04-09
    E. I. Andreikov, O. V. Krasnikova, Yu. A. Dikovinkina, M. G. Pervova, M. V. Zorin, V. V. Kuprygin

    Abstract—The properties of tar from the high-temperature coking of volatile-rich petroleum coke (CA, coking additive) are compared with the properties of coal tar. According to thermogravimetric data for the residue at temperatures beyond 360°C, the content of high-boiling components is considerably higher for petroleum tar than for coal tar. However, its yield of coke residue is lower than for coal

    更新日期:2020-04-09
  • Determining the Wettability of Coal Surfaces
    Coke Chem. Pub Date : 2020-04-09
    Yu. F. Patrakov, S. A. Semenova, Yu. A. Kharlampenkova, S. A. Sozinov

    Abstract—For Kuznetsk Basin coal of different metamorphic stages, the fundamental difference between determining the limiting wetting angle of a coal surface by means of a hanging bubble and a sitting droplet is determined. The influence of surface preparation (briquetting of powder, plane cleavage, or surface polishing after plane cleavage) on the limiting wetting angle is investigated. The methodological

    更新日期:2020-04-09
  • Structure and Applicability of Sorbents Produced from Coke Dust
    Coke Chem. Pub Date : 2020-03-17
    I. P. Kopylov, S. N. Klyukin, S. A. Andriyantseva, E. M. Krasnikova

    Abstract Given the seriousness of environmental pollution by organic materials and the need for corresponding sorbents in treatment systems, methods of producing sorbents by thermochemical activation of coke dust are considered. The structure of the sorbents is studied, and their use in toluene processing is recommended. Disposal of the sorbents within the coke plant is feasible. Outside the coke plant

    更新日期:2020-03-17
  • Study on the Influence Factor of Coke Pulverization Rate and Its Effect on Operating Index of Large Blast Furnace
    Coke Chem. Pub Date : 2020-03-17
    Wencheng Zhang, Xiaoyong Zhang, Mingdong Zheng

    Abstract The carbon dissolving reaction is the main factor for the deterioration of coke in the blast furnace. Therefore, in order to investigate the effect of coke deterioration on the permeability of blast furnace, the Coke Pulverization Rate (CPR) which represented the degree of Matrix carbon loss after carbon dissolution was put forward in this paper. The results showed that the CPR increases with

    更新日期:2020-03-17
  • Optimizing the Radioisotope Gamma-Albedo Analysis of Quasi-Binary Media
    Coke Chem. Pub Date : 2020-03-17
    Yu. N. Pak, D. Yu. Pak, M. S. Akhmetov, M. B. Mynbayev, D. S. Bugubaev

    Abstract A formula is proposed for assessing the sensitivity of radioisotope γ-albedo analysis of quasi-binary media, such as coal. The sensitivity is investigated as a function of the γ energy and the composition of the quasi-binary medium. A model is outlined for optimizing the parameters of the method so as to minimize the errors.

    更新日期:2020-03-17
  • Using Coking Byproducts in Paint Production: a Comparison of Quality Standards
    Coke Chem. Pub Date : 2020-03-17
    O. V. Faustov, A. V. Shilyakov, S. N. Klyukin, A. V. Bondarenko, I. V. Glazunova, N. N. Kiyashova, Yu. B. Molodtsov

    Abstract Standard documents regarding the quality of coke-plant products are compared with standards regarding raw materials for paint and varnish production. The requirements on six products are totally consistent: benzene, indene–coumarone resin, coal tar, coal-tar solvent, solvent naphtha, and toluene. Ammonium sulfate and sulfuric acid may be used after additional treatment.

    更新日期:2020-03-17
  • Specific Surface and Porosity of Coal
    Coke Chem. Pub Date : 2020-03-17
    E. N. Kozyreva, E. S. Nepeina

    Abstract The specific surface and porosity of Belovo coal are determined. Coal samples undergo adsorption–structural analysis at the liquid-nitrogen temperature and at different relative partial pressures, on Sorbi N.4.1 and Termosorb TPD 400 instruments and also on the Micromeritics ASAP-2020 static vacuum system.

    更新日期:2020-03-17
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