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Готові списки джерел за темами / Rotary kilns / Статті в журналах

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Статті в журналах з теми "Rotary kilns"

Автор: Grafiati

Опубліковано: 4 червня 2021

Оновлено: 25 липня 2025

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1

Sekisov, Aleksandr, and Georgy Serga. "Rotary-screw systems for rotary kilns." E3S Web of Conferences 91 (2019): 02034. http://dx.doi.org/10.1051/e3sconf/20199102034.

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Анотація:

The proposed paper examines rotary-screw systems for rotary kilns in the production of expanded clay. To reduce the size, reduce weight, increase productivity, simplify operation, reduce energy consumption in the production of expanded clay, the shell is made screw-shaped and mounted horizontally. Technical solutions protected by six patents of the Russian Federation are proposed, the structures of the shells of rotary kilns are shown, which, in comparison with the known structures of similar purpose, are made screw-shaped with internal spiral grooves. The dependence is proposed for determinin

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2

Bajraktari-Gashi, Zarife, Muharrem Zabeli, and Erard Morina. "Determination of adhesion stages of the Fe-Ni ore at the Ferronikeli plant in Drenas." Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, no. 5 (2020): 37–42. http://dx.doi.org/10.33271/nvngu/2021-5/037.

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Анотація:

Abstract: Purpose. The process of calcine production in rotary kilns at the Ferronikeli plant in Drenas is realized with great difficulties as a result of the formation of large adhesions in the areas of rotary kilns. So far, the removal of load adhesions during the work process inside the rotary kilns is achieved only by their physical removal. The purpose of the paper is to determine the factors in reducing adhesions in the process of calcine production in the areas of rotary kilns, in the Ferronikeli plant in Drenas. Methodology. Chemical analysis of iron-nickel ore. The determination of th

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3

Lapaev, I. I., V. V. Sorokin, S. E. Goloskin, and A. V. Orlov. "About the lining of the rotary kilns for the petroleum coke calcination." NOVYE OGNEUPORY (NEW REFRACTORIES), no. 1 (April 26, 2019): 3–7. http://dx.doi.org/10.17073/1683-4518-2019-1-3-7.

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Анотація:

The brief description is given in the article for the engineering process and design of the rotary kilns for the petroleum coke KEP-1 and KEP-2 calcination, as well as the requirements to the lining of some parts of these kilns are presented. The lining bricklaying's features and principal methods used for the rotary kilns the foreign ones including are shown. The efficient possible lining option for the rotary kilns with the diameter both of 3 and 45 meters is described. The design and the modern materials are proposed to line up the calcining kiln for the KEP-2 calcined petroleum coke manufa

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4

Mun, Seongil, and Jehyeung Yoo. "Operating Key Factor Analysis of a Rotary Kiln Using a Predictive Model and Shapley Additive Explanations." Electronics 13, no. 22 (2024): 4413. http://dx.doi.org/10.3390/electronics13224413.

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Анотація:

The global smelting business of nickel using rotary kilns and electric furnaces is expanding due to the growth of the secondary battery market. Efficient operation of electric furnaces requires consistent calcine temperature in rotary kilns. Direct measurement of calcine temperature in rotary kilns presents challenges due to inaccuracies and operational limitations, and while AI predictions are feasible, reliance on them without understanding influencing factors is risky. To address this challenge, various algorithms including XGBoost, LightGBM, CatBoost, and GRU were employed for calcine temp

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5

Urbano, José, Jorge Henriquez, Alvaro Ochoa, Ana Primo, and Breno Souza. "Dynamic modeling of the heat transfer process in rotary kilns with indirect oil heating: Parametric analysis of gypsum calcination case." Thermal Science, no. 00 (2021): 245. http://dx.doi.org/10.2298/tsci210523245u.

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Анотація:

This work proposes a mathematical modeling and numerical simulation of a gypsum rotary kiln with indirect oil heating in a three-dimensional transient regime. The mathematical model was based on Fourier's Law as a constitutive relationship and the principle of energy conservation, applied to a control volume in cylindrical coordinates. Furthermore, a bed homogenization model was used to represent the most realistic condition of the physical phenomenon since some rotary kilns have internal fins that aim at homogenizing the gypsum temperature during calcination. This work intends to fill the gap

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6

Valeriy, Shcherbina, Shvachko Denis, and Borshchik Serhiy. "HEAT EXCHANGE SIMULATION IN ENERGY ZONES OF A ROTARYKILN WITH CHANGE OF HEAT RESISTANCE OF THE BODY." Technology audit and production reserves 6, no. 1 (50) (2019): 36–41. https://doi.org/10.15587/2312-8372.2019.189169.

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Анотація:

<em>The object of research is high-temperature thermal units – rotary kilns. Rotary kilns are used in various industries. The specified equipment has high energy consumption, which is due to the operating conditions of the kiln units in compliance with a number of technological requirements for thermal conditions. At the same time, the problem of high energy intensity is aggravated by the low level of useful energy resources. One of the most problematic places is the thermal and operational characteristics of rotary kilns, as well as the use of lining with increased thermal resistance.</

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7

Saidi Amraoui, Houda, Khalid Janati Idrissi, and Nabil Moujibi. "Diagnostic Methods for Industrial Systems: A Case Study of Rotary Kilns in Cement Manufacturing." E3S Web of Conferences 601 (2025): 00045. https://doi.org/10.1051/e3sconf/202560100045.

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Анотація:

With the continuous increase in complexity in industrial systems and the growing importance of maintaining their safety, numerous research efforts have aimed to develop various methods for detecting, locating, and identifying system anomalies as early as possible. In this context, we present existing diagnostic methods and use the rotary kiln in cement manufacturing as a case study for this analysis. Because of the kiln’s large volume and the high temperatures involved, this complex structure is subjected to stress and deformation during its operation. Therefore, this study proposes a new solu

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8

Gashi, Zarife Bajraktari, Rrahim Maksuti, and Nagip Murati. "The Usage of Pet Kok is a Possibility of Reducing the Amount of Heavy Oil in the Rotary Kilns in the New Foundry of the New Ferronikel in Drenas." Applied Mechanics and Materials 749 (April 2015): 111–15. http://dx.doi.org/10.4028/www.scientific.net/amm.749.111.

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Анотація:

In this project we have represented the reduction of the ancillary heavy oil substance in the rotary kilns in the new foundry of the new Ferronickel in Drenas, with the use of the ancillary substance Pet Kok. The experimental and industrial research have been analyzed during the years 2008,2009,2010,2011,2012 and 2013. The chemical composition of heavy oil was analyzed in the INKOS Institute in Obiliq, while the composition of Pet Kok in the laboratory of the new foundry in the new Ferronickel in Drenas. The use of Pet Kok reduces the attachment of the substances in the rotary kilns walls, and

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9

Berta, René, and Ladislav Lukáč. "Ash ring formation in lime rotary kilns." Advances in Thermal Processes and Energy Transformation 1, no. 1 (2018): 01–04. http://dx.doi.org/10.54570/atpet2018/01/01/0001.

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Анотація:

This paper describes in different sections all know factors influencing ash ring formation in lime rotary kilns. Ash ring is mostly influence by fuel and lime properties and its impurities and process conditions. The paper describes different types of ash rings that might formed in rotary kilns. Factors were analyzed from feed batch, fuel to construction parts of rotary kilns. Papers describes all know factors how to prevent ash ring formation and how decrease ash ring formation and its influence on operational conditions of lime rotary kilns.

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10

Khamesi, Seyed Sina, Pouria Kavandi, and Maryam Mohammadi. "Simulating the Granular Materials Flow in Rotary Kilns." Applied Mechanics and Materials 232 (November 2012): 477–81. http://dx.doi.org/10.4028/www.scientific.net/amm.232.477.

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Анотація:

Granular materials flow is discussed by different models. These models are 2D and each of them includes some special effects of two phase flow. For simulating the 3D flow of granular materials in rotary kilns, a model based on finite volume method (FVM) is presented which includes axial and rotational motion and also all of the effects of two phase flow such as: viscosity effect, particle size, rotating velocity of kiln, kiln tilt, etc. This method is used according to a real kind of rotary kiln and hypothetical clogging inside of kiln. The simulation results in both 2D and 3D views are presen

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11

Shcherbina, Valerii, Olena Ivanenko, Oleksandr Sokolskyi, and Gennady Vasilchenko. "Use of heat recovery technology to increase thermal efficiency of rotary furnaces." Proceedings of the NTUU “Igor Sikorsky KPI”. Series: Chemical engineering, ecology and resource saving, no. 3 (September 30, 2023): 41–51. http://dx.doi.org/10.20535/2617-9741.3.2023.288247.

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Анотація:

The article considers the problem of increasing the energy efficiency of rotary kilns, which are used in various industries for thermal processing of materials, such as metallurgical, chemical, construction, electrode and others. The source of heat for the kilns is gaseous fuel, which is supplied through special burners located at one end of the cylinder. The material for processing is loaded at the opposite end and moves towards the burner due to the force of gravity and rotation of the kiln. One of the important aspects of operating rotary kilns is energy efficiency, which depends on many fa

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12

Wankerl, Jan. "Features and Benefits of Horizontal Contact Drying." AM&P Technical Articles 181, no. 2 (2023): 20–22. http://dx.doi.org/10.31399/asm.amp.2023-02.p020.

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Анотація:

Abstract Processes such as combustion, calcination, thermal cracking, and gasification are typically carried out in industrial plants featuring kilns, rotary kilns, or drying ovens. The dynamic, high-temperature process of horizontal contact drying makes it possible to treat bulk materials more efficiently and evenly than traditional drying ovens and rotary kilns.

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13

Tatič, Miroslav, Ladislav Lukáč, and Ján Kizek. "New Generation of Refractories for Rotary Cement Kiln." Advances in Thermal Processes and Energy Transformation 5, no. 4 (2022): 69–77. http://dx.doi.org/10.54570/atpet2022/05/04/0069.

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Анотація:

The article describes a rotary cement kiln and its process, discusses primary and secondary fuels and presented stresses on the refractory lining. The authors present various wear and lining concepts. In the contribution are summarized practical development applied to these aggregates. Optimum lining performance throughout the kiln can be achieved by appropriate refractory selection. Finally, this article highlights some types of newly developed refractory materials for the basic lining in modern cement rotary kilns.

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14

Lisuch, Julius, and Jaroslav Gonos. "Use of Logistic Approach in Optimizing the Rotary Kiln Run." Applied Mechanics and Materials 483 (December 2013): 518–23. http://dx.doi.org/10.4028/www.scientific.net/amm.483.518.

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Анотація:

The strategic object of the innovation process in the raw materials extracting and treatment area is a sustainable development in all its components, particularly in the material, economic, environmental and energy. The paper presents a concrete contribution to the achievement of this goal by applying the principles of logistics in technical and technological optimization of rotary kilns operation with a positive impact in the energetic field especially. Rotary kilns are a long-term core technology of heat aggregates within the mining industry. Today there is a characteristic potential optimiz

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15

Zahradník, David, Jakub Vynikal, and Karel Pavelka. "Investigation of Inner Lining Loss and Correlation with Steel Structure Ovality in Rotary Kilns." Applied Sciences 13, no. 23 (2023): 12811. http://dx.doi.org/10.3390/app132312811.

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Анотація:

The article delves into the application of laser scanning within the realm of engineering, concentrating its examination on rotary kilns. Through an in-depth case study, this article meticulously assesses the advantages inherent in utilising laser scanning technology and draws comparisons with conventional measurement methods. The overarching objective of the investigation is to unravel the intricate relationship between the deterioration of the rotary kiln liners and the ovality of the underlying steel structure. By meticulously analysing these aspects, this article seeks to contribute valuab

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16

Ezer, Sabahattin. "Middle Bronze Age Pottery Kilns at Şaraga Höyük." Belleten 77, no. 278 (2013): 1–14. http://dx.doi.org/10.37879/belleten.2013.1.

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Анотація:

As a result of archeological research conducted on prehistoric and protohistoric periods in Anatolia a limited number of ceramic kilns were found. Therefore, two kilns, which have been found during the 2003 excavation season in Saraga Hoyuk and which belong to MBA II, are of great importance because they provide information regarding the ceramic production technology in the 2nd millennium B.C. One of these kilns is of big (Kiln 1) and the other is of small (Kiln 2) size. The both kilns show the similar work systems but both of them show same different features as the typologically. The kilns c

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17

Yur'ev, Boris, and Vyacheslav Dudko. "Determination of Key Parameters Required to Optimize Calcination Process in Ferrous Metallurgy Heating Plants." Solid State Phenomena 316 (April 2021): 282–87. http://dx.doi.org/10.4028/www.scientific.net/ssp.316.282.

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Lime is the product of calcination. Its formation is always related to removal of carbon dioxide generated in the course of carbonate decomposition. Ferrous metallurgy, construction material, chemical and food industry companies account for about 90 % of lime produced in the country. Ferrous metallurgy is the major consumer of commercial lime using up to 40 % of all produced lime. Currently, despite occurrence of new binding and artificially produced chemical compounds, lime remains the major chemical compound produced by the industry in terms of output. Various units (shaft, rotary tubular ki

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18

Davies, Patrick R., Michael J. S. Norton, D. Ian Wilson, John F. Davidson, and David M. Scott. "Gas flow in rotary kilns." Particuology 8, no. 6 (2010): 613–16. http://dx.doi.org/10.1016/j.partic.2010.07.014.

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19

Tunca, Samet Giray. "Experimental And Economic Comparison Of Fuels Used In Rotary Kilns On Energy Efficiency." IOSR Journal of Mechanical and Civil Engineering 22, no. 1 (2025): 01–07. https://doi.org/10.9790/1684-2201010107.

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Анотація:

Different methods are used for the heat energy desired to be obtained from large-scale furnaces used in industry. Our study includes the analysis of petroleum coke and natural gas data used in the firing of largescale rotary kilns. After firing, the temperature must rise to 1800 0C in order to sinter the material in the kiln. Therefore, two fuel type hybrids are used for the desired energy. Rotary kilns are fired with natural gas fuel since it is easier to control. Then, petroleum coke is used to increase the temperature and perform the sintering process. Rotary kilns can have certain lengths

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20

Xu, Ping, Ming Cheng, Jun Liu, and Xiao Feng Liu. "Particles Movement Simulation of Screw Transporting in Rotary Kiln." Advanced Materials Research 734-737 (August 2013): 1547–50. http://dx.doi.org/10.4028/www.scientific.net/amr.734-737.1547.

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Анотація:

Rotary kilns are widely used in metallurgical industry. By using the software of Solid Edge, the geometric model could be established. Then the model was imported into the discrete element simulation software of EDEM 2.4. Material in the rotary kiln was regarded as particles. Regardless of the floating of the screw in the cylinder, the rotation speed of cylinder and screw could be set. By the "grid bin group" option of the "analyst" module, the simulation model was divided into sections. Finally the relative particles motion charts and particles distribution could be obtained and analyzed. Com

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21

Gunnarsson, Adrian, Klas Andersson, Bradley R. Adams, and Christian Fredriksson. "Discrete-Ordinates Modelling of the Radiative Heat Transfer in a Pilot-Scale Rotary Kiln." Energies 13, no. 9 (2020): 2192. http://dx.doi.org/10.3390/en13092192.

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Анотація:

This paper presents work focused on the development, evaluation and use of a 3D model for investigation of the radiative heat transfer in rotary kilns. The model applies a discrete-ordinates method to solve the radiative transfer equation considering emission, absorption and scattering of radiation by gas species and particles for cylindrical and semi-cylindrical enclosures. Modelling input data on temperature, particle distribution and gas composition in the radial, axial and angular directions are experimentally gathered in a down-scaled version of a rotary kiln. The model is tested in its c

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22

Trotsenko, L. M., V. V. Aleksyeyenko, and V. S. Pikashov. "COMPARATIVE ANALYSIS OF ENERGY EFFICIENCY OF THERMAL OPERATION OF ROTARY KILNS WITH DIFFERENT HEATING SYSTEMS." Energy Technologies & Resource Saving 79, no. 2 (2024): 24–34. http://dx.doi.org/10.33070/etars.2.2024.02.

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Анотація:

Analysis of the design features of known heating systems for large rotary kilns and modern methods of influencing the formation of the flame and the distribution of the temperature profile is presented. It has been established that most of the known methods of forming the flame and temperature profile of the working space of rotary kilns are based on methods of influencing air flows, in particular secondary air, the share of which in the total volume of combustion air is 70–100 %. On the basis of previous studies and observations, it is proposed to form a flame using additional sideways gas je

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23

Lockwood, F. C., and J. J. Ou. "Review: Burning Refuse-Derived Fuel in a Rotary Cement Kiln." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 207, no. 1 (1993): 65–70. http://dx.doi.org/10.1243/pime_proc_1993_207_008_02.

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Анотація:

In cement kilns, combustion takes place under very high flame temperatures and relatively long residence times. These conditions are favourable for the burning of refuse waste. The purpose of this note is to review the combustion and pollutant emission implications of using such a fuel as a supplementary source of heat in a cement kiln. Based on technical and environmental considerations, the analysis of burning refuse-derived fuel (RDF) in a cement kiln shows that no special firing technology has to be installed except that of the RDF handling system, that there is an upper limit to the total

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24

Ryan, Jarod, Markus Bussmann, and Nikolai DeMartini. "CFD Modelling of Calcination in a Rotary Lime Kiln." Processes 10, no. 8 (2022): 1516. http://dx.doi.org/10.3390/pr10081516.

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Анотація:

A 2D axisymmetric computational fluid dynamics (CFD) model, coupled to a 1D bed model, has been developed to capture the key processes that occur within rotary lime kilns. The model simulates the calcination reaction using a shrinking core model, and predicts the start of calcination and the degree of calcination at the end of the kiln. The model simulates heat transfer due to radiation, convection and conduction between the gas, wall, chains, and bed. The 2D gas and 1D bed models are coupled by mass and heat sinks to simulate heat transfer, evaporation, and the calcination reaction. The model

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25

Geraskina, E. A., O. I. Khomenko, and A. A. Khomenko. "IMPROVEMENT OF HEAT UTILIZATION SYSTEMS WITH THERMAL PROCESS STABILIZATION IN ROTARY KILNS." Modern construction and architecture, no. 12 (June 28, 2025): 122–28. https://doi.org/10.31650/2786-6696-2025-12-122-128.

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This article is devoted to improving heat utilization systems for industrial and municipal heat supply. It outlines methods for enhancing the cooling systems of kilns used in the firing of construction materials, identifies ways to stabilize the thermal regime, and establishes the conditions for developing functional layouts for furnace units. Rotary kilns, operating under varying environmental influences such as air temperature, wind speed, solar radiation, and atmospheric precipitation, lose up to 30% of their heat through the lateral surface into the surrounding environment. These external

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26

Zanoli, Silvia Maria, Crescenzo Pepe, and Giacomo Astolfi. "Advanced Process Control for Clinker Rotary Kiln and Grate Cooler." Sensors 23, no. 5 (2023): 2805. http://dx.doi.org/10.3390/s23052805.

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Анотація:

The cement industry includes energy-intensive processes, e.g., clinker rotary kilns and clinker grate coolers. Clinker is obtained through chemical and physical reactions in a rotary kiln from raw meal; these reactions also involve combustion processes. The grate cooler is located downstream of the clinker rotary kiln with the purpose of suitably cooling the clinker. The clinker is cooled through the action of multiple cold air fan units as it is transported within the grate cooler. The present work describes a project where Advanced Process Control techniques are applied to a clinker rotary k

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27

Kurdowski, Wiesław, and Ernest Jelito. "Rotary kilns in current cement industry." Cement Wapno Beton 25, no. 2 (2020): 127–36. http://dx.doi.org/10.32047/cwb.2020.25.2.5.

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Анотація:

Short rotary kilns with cyclone heat exchangers are commonly used in current cement industry. The principle is the installation of precalciner, even in the case of kilns with low capacity, not exceeding 3000 tons per day. The best method of tertiary air introducing is the usage of separate duct from grate cooler, which justifi es widespread use of these coolers. Alternative fuels, as whole tires, can be burned in precalciners, on special furnaces.

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28

Aldeib, Mohamed A., Ahmed M. Bshish, and Ali S. Ebshish. "Energy Analysis Using Matlab Graphical User Interface of Cement Rotary Kiln for Alburge Cement Plant: A Case Study." مجلة الجامعة الأسمرية: العلوم التطبيقية 6, no. 5 (2021): 621–34. http://dx.doi.org/10.59743/aujas.v6i5.1514.

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Анотація:

Cement manufacture has been one of the most energy intensive industries in the world. In order to produce clinker, rotary kilns are widely utilized in cement plants. This work deals with the energy analysis of a rotary kiln system working in a cement plant in Alburge Cement Plant (ACP), at Arab Union Cement Company (AUCC), Zliten city, Libya. The kiln has a capability of producing 4200 ton-clinker per day. The main objective of this study is to examine heat loss of various components of the rotary kiln system. In the present study, a Matlab program with a graphical user interface (GUI) has bee

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29

ZUEV, V. I., and A. E. MIKALUTSKY. "Improvement of Lime-Burning Rotary Kilns." Stroitel'nye Materialy 746, no. 3 (2017): 62–68. http://dx.doi.org/10.31659/0585-430x-2017-746-3-62-68.

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30

PERSHING, D. W., J. S. LIGHTY, G. D. SILCOX, M. P. HEAP, and W. D. OWENS. "Solid Waste Incineration in Rotary Kilns." Combustion Science and Technology 93, no. 1 (1993): 245–76. http://dx.doi.org/10.1080/00102209308935292.

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31

Pisaroni, M., R. Sadi, and D. Lahaye. "Counteracting ring formation in rotary kilns." Journal of Mathematics in Industry 2, no. 1 (2012): 3. http://dx.doi.org/10.1186/2190-5983-2-3.

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32

Mujumdar, Kaustubh S., and Vivek V. Ranade. "CFD modeling of rotary cement kilns." Asia-Pacific Journal of Chemical Engineering 3, no. 2 (2008): 106–18. http://dx.doi.org/10.1002/apj.123.

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33

Funken, Karl-Heinz, Martin Roeb, Peter Schwarzboezl, and Heiko Warnecke. "Aluminum Remelting using Directly Solar-Heated Rotary Kilns." Journal of Solar Energy Engineering 123, no. 2 (2001): 117–24. http://dx.doi.org/10.1115/1.1355242.

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Анотація:

To check the feasibility of solar thermal remelting of aluminum scrap a directly absorbing rotary kiln receiver-reactor was constructed for experimentation in a mini-plant scale in the DLR high flux solar furnace. Conventionally the high energy demand for heating rotary kilns is met by the combustion of fossil fuels. This procedure generates a big exhaust gas volume which is contaminated by volatiles if the technology is applied to treat waste materials. Application of concentrated solar radiation to provide the high temperature heat enables to substitute the fossil fuel. Thus smaller off-gas

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34

Bojanovský, Jiří, Vítězslav Máša, Igor Hudák, Pavel Skryja, and Josef Hopjan. "Rotary Kiln, a Unit on the Border of the Process and Energy Industry—Current State and Perspectives." Sustainability 14, no. 21 (2022): 13903. http://dx.doi.org/10.3390/su142113903.

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A rotary kiln is a unique facility with widespread applications not only in the process industry, such as building-material production, but also in the energy sector. There is a lack of a more comprehensive review of this facility and its perspectives in the literature. This paper gives a semi-systematic review of current research. Main trends and solutions close to commercial applications are found and evaluated. The overlap between process and energy engineering brings the opportunity to find various uncommon applications. An example is a biogas plant digestate treatment using pyrolysis in t

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S. Soulayman and R. El-Khatib. "The Effect of Fuel Emulsion on Fuel Saving in Cement Kilns." Journal of Solar Energy Research Updates 7 (January 20, 2020): 42–51. http://dx.doi.org/10.31875/2410-2199.2020.07.5.

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In this work, the combustion of heavy oil and its emulsions with water, in the cement kilns, was investigated in experiments on an industrial scale. The performance of the cement rotary kilns, used in Tartous Company for cement and construction materials, was studied when they were employed to be operated with heavy fuel oil (HFO) and with the water phase of emulsified heavy oil containing 8 vol. % water and 92 vol. % heavy fuel oil (HFO). The emulsified water/heavy fuel oil (W/HFO) with 8 vol. % of water content showed no separation and contained the smallest and most homogeneous water-in-HFO

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Nevřivová, Lenka. "Use of Undersize Fractions of Refractory Claystone for Grog Manufacturing in Shaft Kilns." Solid State Phenomena 276 (June 2018): 242–47. http://dx.doi.org/10.4028/www.scientific.net/ssp.276.242.

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Refractory aluminosilicate grogs are made by firing refractory clays and claystones. They are fired predominantly in rotary or shaft kilns. Prior to firing in shaft kilns, particles of claystone smaller than 35 mm are separated These fine fractions cannot be processed in a shaft kiln, since they lower the quality and homogeneity of firing. However, these claystones can be briquetted into larger pieces (5 – 6 cm), which can be easily fired in shaft kilns. It is possible to modify the raw material by adding correcting materials or other types of clay. This method can then be used for making spec

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Lin, Chaoqun, Zhengming Yi, and Zhiwei Jiang. "An alumina rotary kiln monitoring system based on flame image processing." Transactions of the Institute of Measurement and Control 41, no. 10 (2018): 2764–71. http://dx.doi.org/10.1177/0142331218810085.

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In order to monitor the combustion condition and improve the product material quality, a digital image acquisition and processing method is adopted in alumina-sintering process. Two digital properties of flame grade and material grade are obtained by image data analyzing and smooth filtering, which provide reliable reference for operational optimization and automatic control of rotary kilns. This image acquisition system improves the operation of kiln effectively and reduces the working intensity and the manufacture cost.

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Leleka, S. V., A. Ya Karvatskii, I. O. Mikulionok, et al. "IMPROVING THE ENERGY EFFICIENCY OF A ROTARY KILN FOR CALCINING CARBON-CONTAINING RAW MATERIALS." Energy Technologies & Resource Saving, no. 2 (June 20, 2020): 63–72. http://dx.doi.org/10.33070/etars.2.2020.08.

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An analysis is made of the traditional energy-intensive process of calcining carbon-containing raw materials, in particular petroleum coke, in rotary kilns, which assumes continuous burning of natural gas in these furnaces. A new method for producing calcined petroleum coke is proposed, which minimizes the cost of natural gas as fuel, and therefore reduces the energy intensity of the calcination process and the cost of the obtained calcined coke. In the proposed method, at the beginning of the process, flue gases are obtained by burning natural gas in a rotary kiln, after the calcined coke rea

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Stojic, Nenad, Rade Karamarkovic, Miodrag Karamarkovic, and Milos Nikolic. "Improving design and operating parameters of the recuperator for waste heat recovery from rotary kilns." Thermal Science, no. 00 (2021): 239. http://dx.doi.org/10.2298/tsci210410239s.

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Depending on their applications, heat losses from the shells of rotary kilns account for 3 to 25% of the total heat input. Over the hottest zone of the kiln shell, an annular duct with a variable diameter is formed. Two air streams entering the annulus at both ends flow to a common extraction point to receive the thermal power equal to the ambient heat loss of the bare kiln. The design does not require airtightness, utilizes the entire heat loss, and by the variation of the airflow can be used over the kilns with variable operating parameters (?20% heat loss), which show similar surface temper

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Bujak, Janusz, Piotr Sitarz, Krzysztof Bujak, Sebastian Majkowski, and Rafał Pasela. "Estimation Complete Combustion Coefficient in Rotary Kilns." Energies 15, no. 3 (2022): 1143. http://dx.doi.org/10.3390/en15031143.

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This paper presents a model-based analysis of variability of thermodynamic and chemical parameters in a rotary kiln (RK) during thermal treatment of animal waste. The core process of chemical treatment of waste takes place in RKs; the process involves heating, gasification and partial combustion of the waste. Control over these parameters, and especially the level of complete combustion, determines the quality and efficiency of the process. In operational practice, control and analysis of the variability of process parameters is complicated by the high degree of simultaneity of individual tran

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Shubin, V. I., and V. I. Nikonorov. "Periclase-spinel refractories for rotary cement kilns." Refractories 37, no. 1-2 (1996): 52–54. http://dx.doi.org/10.1007/bf02230464.

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Duan, Shaopei, Zhengzhe Fang, and Baokuan Li. "Numerical simulation and validation of quasi steady state method for dual sizes calcination in a parallel flow regenerative lime kiln." Thermal Science, no. 00 (2024): 180. http://dx.doi.org/10.2298/tsci240412180d.

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As an essential slagging raw material in blast furnace iron making, quicklime, which requires high chemical activity, is produced in parallel flow regenerative(PFR)lime kilns. The PFR lime kiln supports a wide range of fuels and can calcine a wide range of particle sizes while maintaining a high reactivity, which enhances the high temperature hard-burnt issue caused by rotary kilns. In this study, the bed porosity under dual sizes structure has been obtained with the help of Discrete Element Model (DEM) based on Porous Medium Model (PMM), and the distribution of gas-solid temperature and decom

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Pitsik, O. N. "Periclase-pleonaste refractories for rotary kilns for cement clinker firing." NOVYE OGNEUPORY (NEW REFRACTORIES), no. 9 (December 12, 2024): 8–11. https://doi.org/10.17073/1683-4518-2024-9-8-11.

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The composition of periclase-pleonaste refractories alternative to imported ones has been developed. The resistance of refractories to the influence of cement clinker has been tested and the depth of impregnation of the structure with aggressive corrosive agent has been determined. Durability testing of the new product type in rotary kilns for the production of refractories and cement has been carried out. The possibility of industrial use of the developed refractories in lining of rotary kilns for cement clinker firing for sintering and transition zones with unstable coating, working under co

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Krot, O.P., and O.I. Rovenskyi. "Modeling the Mixing of Components in a Rotary Kiln While Burning Municipal Waste to Ensure Rational Use of Energy." Problemele Energeticii Regionale 2(34) (August 15, 2017): 125–39. https://doi.org/10.5281/zenodo.1189355.

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In Ukraine municipal waste is collected and delivered to a landfill. Municipal waste can be used as fuel to generate additional heat and electricity. The primary advantages of incineration are that waste volumes are reduced by an estimated, and the need for land and landfill space is greatly reduced. The plant has been designed by North–East Scientific Center using a thermocatalytic waste gas purification system with highly efficient dioxins reduction and heat energy recovery system. The technology of waste neutralization includes: a rotary kiln, an afterburner chamber, a new catalytic t

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Xie, Jun, Wenqi Zhong, Yingjuan Shao, and Kaixi Li. "Modeling of Oxidation Process of Coal Tar Pitch in Rotating Kilns." Mathematical Problems in Engineering 2019 (July 7, 2019): 1–21. http://dx.doi.org/10.1155/2019/1953156.

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In this paper, a three-dimensional numerical model has been developed to study the process of oxidative weight increment of coal tar pitch in a rotating kiln. Based on the two-fluid method, the gas phase is modeled by realizable k-ε turbulent model and the solid phase is modeled by kinetic theory of granular flow. The dense gas-solid flow, heat transfer, and oxidation reaction for the bed and freeboard regions are simultaneously solved. The model is applied to a rotating kiln with a cylinder of 0.75 m length and 0.4 m diameter in the front and circular truncated cone on exit side. The detailed

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Niu, Yuhan, Jingbing Wu, and Yun Zhang. "Centerline measurement of rotary kilns based on the free station method." Journal of Physics: Conference Series 2815, no. 1 (2024): 012022. http://dx.doi.org/10.1088/1742-6596/2815/1/012022.

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Abstract The rotary kiln is an important production equipment in the building materials and metallurgy industry, and its operating conditions, safety, and efficiency largely determine the economic benefits of its users and the safety of workers on site. At present, the testing methods for each rotary kiln part are relatively mature and can be used to realize accurate measurements in a dynamic environment. However, the main means of measurement is limited by the site conditions, and the actual detection speed is slow; the preparation work is cumbersome and will be subject to the measurement of

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Hu, Yuchao, Weihua Zheng, Xin Wang, and Bin Qin. "Working Condition Recognition Based on Transfer Learning and Attention Mechanism for a Rotary Kiln." Entropy 24, no. 9 (2022): 1186. http://dx.doi.org/10.3390/e24091186.

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It is difficult to identify the working conditions of the rotary kilns due to the harsh environment in the kilns. The flame images of the firing zone in the kilns contain a lot of working condition information, but the flame image data sample size is too small to be used to fully extract the key features. In order to solve this problem, a method combining transfer learning and attention mechanism is proposed to extract key features of flame images, in which the deep residual network is used as the backbone network, the coordinate attention module is introduced to capture the position informati

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Slovikovsky, V. V., and A. V. Gulyaeva. "Effective corrosive-erosive-resistant lining of rotary kilns." NOVYE OGNEUPORY (NEW REFRACTORIES), no. 11 (February 18, 2021): 3–10. http://dx.doi.org/10.17073/1683-4518-2020-11-3-10.

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Slovikovskii, V. V., and A. V. Gulyaeva. "Efficient Corrosion/Erosion-Resistant Linings for Rotary Kilns." Refractories and Industrial Ceramics 61, no. 6 (2021): 607–13. http://dx.doi.org/10.1007/s11148-021-00529-0.

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Fallahpour, Maryam, Alireza Fatehi, Babak N. Araabi, and Morteza Azizi. "A Neuro-Fuzzy Controller for Rotary Cement Kilns." IFAC Proceedings Volumes 41, no. 2 (2008): 13259–64. http://dx.doi.org/10.3182/20080706-5-kr-1001.02246.

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