Application of population balance model to HPGR crushing

Dündar, Hakan; Benzer, Hakan; Aydoğan, Namık A.

doi:10.1016/j.mineng.2013.07.005

Cited by 44 publications

(25 citation statements)

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“…The mathematical model for the HPGR, developed by Hacettepe University researchers (Dundar et al 2013), was fitted with pilot-scale data for itabirate ore.…”

Section: Discussionmentioning

confidence: 99%

“…The parameters for material hardness, material softness and appearance function have been used to characterize breakage on the basis of the modelling approach used by HU (Dundar et al 2013). Figure 11 was obtained by plotting the specific comminution energy (Ecs) against t 10 values, which are defined as the percent passing from one tenth of the original mean particle size.…”

Section: Parameter Estimationmentioning

confidence: 99%

“…where A pd and b pd are parameters that characterize the amenability of the ore to compression breakage (Dundar et al 2013). In analogy to the impactbreakage test (Napier-Munn et al 1996), the product A pd *b pd values may be used as an indicator of ore hardness, so that the higher the A pd *b pd , the softer the material.…”

Section: Materials Hardness Parametermentioning

confidence: 99%

“…As such, it became obvious that the commercial mineral processing plant simulators would not be appropriate, due to the unavailability, at the time, of mathematical models of HPGRs that could meet the requirements of the project. Therefore, the simulation platform used was the JKMDK, that is, the Model Developer´s Kit, which was developed at the JKMRC as a tool to aid in developing new mathematical models of unit operations by the center's researchers as well as partner institutions (Hilden et al 2013). The simulator combines Microsoft Excel ® with a large database of models and a powerful solver to enable simulation of complex circuit flow sheets.…”

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confidence: 99%

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HPGR simulation from piston-die tests with an itabirite ore

et al. 2017

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The Minas Rio project, owned by Anglo American, has HPGRs in open circuit operated as a tertiary/quaternary crushing stage. Currently this type of equipment is designed from HPGR tests on laboratory scale and pilot scale tests. This paper presents a methodology for simulating HPGR from piston-die tests on laboratory scale and a mathematical model developed in Hacettepe University in Turkey. The parameters determined from the results of the piston-die tests were used to validate the HPGR testing on pilot scale. Finally, the model was used to predict the particle size distribution in the HPGR product on industrial scale.

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“…The mathematical model for the HPGR, developed by Hacettepe University researchers (Dundar et al 2013), was fitted with pilot-scale data for itabirate ore.…”

Section: Discussionmentioning

confidence: 99%

Section: Parameter Estimationmentioning

confidence: 99%

Section: Materials Hardness Parametermentioning

confidence: 99%

mentioning

confidence: 99%

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HPGR simulation from piston-die tests with an itabirite ore

et al. 2017

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“…In the case of Itabirite iron ore, this technology is being applied for the first time in the Minas-Rio project, currently in ramp-up phase. The present work compares the performance of the Minas-Rio's roller presses under different operating conditions in relation to the predictions obtained by the three main mathematical models available in the literature: Morrell / Lim / Shi / Tondo (1997), Torres & Casali (2009) and Dundar et al (2013). The comparison was made considering the fitting of the model parameters using a base case, and simulating the other cases using the calibrated parameters.…”

Section: Comparison Of Mathematicals Models In High Pressure Grindingmentioning

confidence: 99%

Comparação De Modelos Matemáticos Na Prensagem De Rolos De Minério De Ferro Itabirítico

Campos¹,

Barrios²,

Segura-Salazar³

et al. 2016

ABM Proceedings

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ResumoA tecnologia da Prensa de Rolos se encontra cada vez mais presente em circuitos de cominuição na indústria mineral. No caso de minérios de ferro itabiríticos, essa tecnologia está sendo aplicada de forma pioneira no projeto Minas-Rio, atualmente em fase de ramp-up. O trabalho compara o desempenho das Prensas de Rolos do circuito Minas-Rio sob diferentes condições de operação em relação às previsões obtidas pelos três principais modelos matemáticos disponíveis na literatura: Morrell / Lim / Shi / Tondo (1997), Torres & Casali (2009) e Dundar et al. (2013. A comparação foi realizada considerando o ajuste dos modelos a um caso base, sendo os demais testes simulados a partir dos parâmetros ajustados para esse. A comparação entre os modelos foi realizada com base nas previsões de potência consumida, capacidade e distribuição granulométrica do produto. Em geral, foram obtidas boas previsões da distribuição granulométrica do produto com os diferentes modelos, embora o modelo de Morrell / Lim / Shi / Tondo tenha superestimado a finura do produto em alguns dos testes. Além disso, foi observada uma boa correspondência entre a potência experimental e a simulada para os três modelos na maioria dos testes industriais. Entretanto, a capacidade prevista pelos modelos de Morrell / Lim / Shi / Tondo e Torres & Casali foi subestimada em todos os casos em relação aos valores experimentais. Palavras-chave: Prensa de rolos; Moagem; Simulação; Minério de ferro itabirítico. COMPARISON OF MATHEMATICALS MODELS IN HIGH PRESSURE GRINDING ROLLS OF AN ITABIRITE IRON ORE AbstractHigh Pressure Grinding Rolls technology is increasingly more present in comminution circuits in the minerals industry. In the case of Itabirite iron ore, this technology is being applied for the first time in the Minas-Rio project, currently in ramp-up phase. The present work compares the performance of the Minas-Rio's roller presses under different operating conditions in relation to the predictions obtained by the three main mathematical models available in the literature: Morrell / Lim / Shi / Tondo (1997), Torres & Casali (2009) and Dundar et al. (2013). The comparison was made considering the fitting of the model parameters using a base case, and simulating the other cases using the calibrated parameters. A comparison of the models was performed based on predictions of power consumption, capacity and size distribution of the product. In general, simulations were in good agreements with the size distribution of the product for the different models, although the model by Morrell / Lim / Shi / Tondo has overestimated the fineness of the product in some of the tests. Furthermore, a good correlation was observed between the experimental and simulated power for the three models in most of the industrial tests. However, the capacity predicted by models Morrell / Lim / Shi / Tondo and Torres & Casali was underestimated in all cases compared to the experimental values.

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Optimization of the Mechanical Comminution – The Crushing Stage

Chimwani

2024

Recovery of Values From Low‐Grade and Complex Minerals

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Application of population balance model to HPGR crushing

Cited by 44 publications

References 5 publications

HPGR simulation from piston-die tests with an itabirite ore

HPGR simulation from piston-die tests with an itabirite ore

Comparação De Modelos Matemáticos Na Prensagem De Rolos De Minério De Ferro Itabirítico

Optimization of the Mechanical Comminution – The Crushing Stage

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