"Hot Rotary Kiln Deformability for Cement Plant, Experimentation, and Numerical Simulation"

Janati, Khalid Idrissi

doi:10.9790/1684-1401071422

Cited by 3 publications

(3 citation statements)

References 15 publications

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“…The overall heat energy entering the system consists of; heat generated by burning the fuel inside the kiln, and sensible heat in raw meal, fuel, and primary air entering the kiln [12].…”

Section: Total Heat Inputmentioning

confidence: 99%

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Thermal Efficiency Evaluation of Souk Elkhamis Cement Rotary Kiln

El-Sheikh,

Shaibi

2017

LyJER

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Due to the fact that the cement industry is one of the discouraging energy-intensive industries, especially the thermal ones, study areas and aspects of the use of such a large amount of energy is one of the most important priorities in this area. This paper aims to highlight the merits and methods of use of this energy and calculate the output distribution of the energy produced from the burning of fuel to determine the amounts of wasted and used from them by conducting the thermal balance of the process in the kiln. It created that only about 47% of the energy is exploited in the completion of processes and chemical reactions, and the remaining approximately 53% is considered wasted. Part of this thermal energy lost is instrumental in some other purposes necessary in this industry as processes of drying and calcining of raw material nutrients before they entering the kiln, and stimulate the burning process of fuel in the kiln, etc., and the other, which is estimated at about 8.6% lose through the outer surface of the kiln to the surrounding. It was found that the total thermal energy entering the kiln to produce one kilogram of clinker equivalent 3658.53 kJ\kg when the kiln worked in about 89% of its production capacity, at the time that the amount of specific thermal energy used and registered when the initial tests carried out at the beginning of operating, which was equal to 3367.64 kJ\kg when the kiln worked with a capacity above 100%. This refers to the increase of approximately 9% of the energy. This paper recommends research into the causes of this increase of amount of heat consumption. It also recommends focusing on the study of the possibility to recovering this wasted energy, which found equal to 313.27 kJ\kg which is not an insignificant amount that can be neglected or ignored.

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“…The overall heat energy entering the system consists of; heat generated by burning the fuel inside the kiln, and sensible heat in raw meal, fuel, and primary air entering the kiln [12].…”

Section: Total Heat Inputmentioning

confidence: 99%

“…The theoretical heat required in relevant process is assigned according to the following calculations [15,12], while theClinker Chemical Compositions is taken partially from Table (…”

Section: Theoretical Heat Required Producing 1 Kg Of Clinkermentioning

confidence: 99%

Thermal Efficiency Evaluation of Souk Elkhamis Cement Rotary Kiln

El-Sheikh,

Shaibi

2017

LyJER

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“…2). When the wear of the shims becomes too great, the casing (shell) may become critically deformed, which causes a loss of the bricks [2]. The shims are evenly distributed around the casing (shell) and serve to hold the riding tyre in a fixed rotational path around the furnace.…”

Section: Introductionmentioning

confidence: 99%

Analytical and numerical analysis of the tire tightening system of a cement kiln

Fakkoussi¹,

Moustabchir²,

Elkhalfi³

et al. 2019

Int J Interact Des Manuf

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The rotary cement kiln forms a major part of any cement works. The kiln is a large cylindrical structure where the raw materials are brought together and heated to form clinker, the base material of cement. To ensure production plant reliability and product quality an understanding and evaluation of the kiln design parameters is of paramount importance. This paper presents a solution for evaluating the mechanical strength of the shims, vital components in the drive system. These parts transmit the rotational drive to the kiln drum, and are subject to large mechanical and thermal stresses. The results of this study enable a reliable plan for preventive maintenance of the kiln furnaces to be developed. The methodology employed detects the mechanical and thermal stresses distributed on the surface of the shim while the working cycle are active, and uses both mechanical theory and numerical simulation by the Finite Elements Method (FEM) under the ANSYS software. The numerical results provide an authoritative guide to the accurate prediction of the optimal preventative maintenance interval for the rotary cement kilns drive element.

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