Modelling cement grinding circuits

Benzer, Hakan; Ergun, Levent; Lynch, A. J.; Öner, Muammer; Gunlu, A.; Celik, I.B.; Aydoğan, Namık A.

doi:10.1016/s0892-6875(01)00160-1

Cited by 45 publications

(19 citation statements)

References 3 publications

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“…Yet, this task is quite cumbersome for both GA suppliers and cement companies, as it extends over several days and requires thorough planning ahead of time. For instance, the addition of GA especially at high rates should not abuse the grinding system, and requires close monitoring of grinding parameters such as the fresh feed rate and CL, mill and elevator motors power, mill sound and temperature, and separator rotor speed and air flow (Mejeoumov, 2007;Benzer et al, 2001;Sottili and Padovani, 2002;Fidan, 2011;Alsop, 2001). Normally, several hours are required to ensure uniformity of grinding parameters, and samples of cement are taken at regular time intervals for ensuring consistent cement fineness and residue.…”

Section: Context and Paper Objectivesmentioning

confidence: 99%

“…The CL is defined as the average number of times that the material circulates through the grinding system before becoming the product. Typical CL values reported in the cement industry can vary from 1 to 3.5 depending on several factors including targeted fineness, separators efficiency, mill type and configuration, and clinker hardness (Mejeoumov, 2007;Benzer et al, 2001;Sottili and Padovani, 2002).…”

Section: Introductionmentioning

confidence: 99%

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Quantifying the effect of clinker grinding aids under laboratory conditions

Assaad¹

2015

Minerals Engineering

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Section: Context and Paper Objectivesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Quantifying the effect of clinker grinding aids under laboratory conditions

Assaad¹

2015

Minerals Engineering

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“…Estimar el comportamiento de estas variables a nivel piloto resulta preponderante en el proceso de escalado pues la optimización de éstas constituye un paso importante para reducir al mínimo los costos de producción. (Benzer et al, 2001). …”

Section: Introductionunclassified

Diseño y Evaluación Energética de dos Circuitos de Molienda y Clasificación para un Clinker de Cemento a Escala Piloto

2013

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ResumenSe presentan los resultados del diseño y evaluación de dos sistemas de molienda en circuito cerrado, para un clasificador tipo ciclón neumático y uno tipo harnero vibratorio. Se comparan las eficiencias energéticas bajo similares condiciones de granulometrías a la entrada del molino, conservando el mismo tamaño de corte en el clasificador. El material se caracterizó mediante: fluorescencia de rayos X, area superficial por el método Brunauer-Emmet-Teller y análisis granulométrico por tamizado. Los resultados indican que la velocidad de giro del molino no tiene significancia estadística sobre la eficiencia mecánica de molienda. A partir de un análisis de superficies de respuestas se determinó que el ciclón favorece la eficiencia (valor óptimo 30%) comparado con el harnero (valor óptimo 18%). Los modelos encontrados para la determinación de la eficiencia mecánica del sistema molino-ciclón y molino-harnero, muestran correlaciones del 85 y 83 % respectivamente. Palabras clave: consumo energético, molienda, molino de bolas, clinker, circuito cerrado Design and Energy Evaluation of two Grinding and Classifier Circuits of a Pilot Scale Cement Clinker AbstractThe design and experimental evaluation of two grinding systems in closed circuit which use two types of classifiers, a pneumatic cyclone and a sieve vibratory, were carried out. The energetic efficiencies under similar conditions in material particle sizes at the mill entrance and keeping the same classifier were compared. The material was characterized by: X-ray fluorescence (XRF), surface area by the method Brunauer-Emmet-Teller and granulometry analysis by sieving. Results show that the mill speed does not have statistical significance over the grinding mechanical efficiency and using a response surface analysis was determined that the cyclone favors the milling (optimum value 30%) against the sieve vibratory type (optimum 18%). Models found for mechanical efficiency determination of the systems mill-cyclone and millsieve vibratory, show correlations of 85 % and 83%, respectively.

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“…It is well known, that the grinding of solid material is important and often critical step in the process for manufacturing of dry dosage powders [2]. In industry mainly empirical milling tests are performed, which demand a huge amount of material, are time and energy consuming, expensive and produce a lot of waste material [3]. Several publications on the performance of impact mills may be found in the literature [4][5][6][7][8][9].…”

mentioning

confidence: 99%

“…Main variables which affect the efficiency and productivity of solid resin milling are operating conditions of the separator, air flow through the mill, mill compartments and grinding rotor speed [3].…”

mentioning

confidence: 99%

Centrifugal impact milling of resins

Hace

2009

Prod. Eng. Res. Devel.

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Investigation of phenol formaldehyde resins milling in centrifugal impact mills is presented. The particle size distribution, energy consumption and size reduction ratio were observed at different material loads, grinding rotor velocities and air flow rates. Experimentally measured data were modelled using previously developed Rosin-Rammler formula and two parameters; the mean particle size and the width of distribution were calculated for different operating conditions. Optimal process conditions and scale up calculation for three different sized mills are proposed. The results may contribute to better understanding of milling processes in industrial plants, with respect to operation costs, energy consumption and environmental care.

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Modelling cement grinding circuits

Cited by 45 publications

References 3 publications

Quantifying the effect of clinker grinding aids under laboratory conditions

Quantifying the effect of clinker grinding aids under laboratory conditions

Diseño y Evaluación Energética de dos Circuitos de Molienda y Clasificación para un Clinker de Cemento a Escala Piloto

Centrifugal impact milling of resins

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