Meso-mechanics simulation analysis of microwave-assisted mineral liberation

Microwave-assisted crushing and grinding can improve efficiency and reduce energy consumption. This paper takes rock grains with galena and calcite as the research object to establish a two-dimensional computational model through the finite difference software FLAC2D. It analyzes the process and law...

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Main Authors: Qin Like, Dai Jun, Yuan Liqun
Format: Article
Language:English
Published: Gruppo Italiano Frattura 2015-09-01
Series:Fracture and Structural Integrity
Subjects:
Online Access:https://www.fracturae.com/index.php/fis/article/view/1612
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author Qin Like
Dai Jun
Yuan Liqun
author_facet Qin Like
Dai Jun
Yuan Liqun
author_sort Qin Like
collection DOAJ
description Microwave-assisted crushing and grinding can improve efficiency and reduce energy consumption. This paper takes rock grains with galena and calcite as the research object to establish a two-dimensional computational model through the finite difference software FLAC2D. It analyzes the process and law of mineral boundary failure under microwave irradiation, and assesses the effects of four factors, namely, microwave irradiation time, power density, mineral crystal size, and mineral content, on mineral boundary failure. Results indicate an optimal microwave irradiation period for the rapid failure of mineral boundary. Moreover, irradiation time and energy consumption can be reduced by increasing the microwave power density. However, irradiation time and energy consumption are basically unchanged when the microwave power density is above a certain threshold. Mineral content slightly affects the microwave irradiation time, whereas mineral crystal size significantly affects the microwave irradiation time. In addition, a larger-sized mineral crystal requires less irradiation time and energy consumption to reach the same failure rate. However, irradiation time and energy consumption slightly change when the crystal size is larger than a certain value.
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institution Kabale University
issn 1971-8993
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publisher Gruppo Italiano Frattura
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series Fracture and Structural Integrity
spelling doaj-art-730826428e8e4fdfa26590ff30ef6b042025-01-03T00:39:59ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932015-09-01934Meso-mechanics simulation analysis of microwave-assisted mineral liberationQin LikeDai JunYuan LiqunMicrowave-assisted crushing and grinding can improve efficiency and reduce energy consumption. This paper takes rock grains with galena and calcite as the research object to establish a two-dimensional computational model through the finite difference software FLAC2D. It analyzes the process and law of mineral boundary failure under microwave irradiation, and assesses the effects of four factors, namely, microwave irradiation time, power density, mineral crystal size, and mineral content, on mineral boundary failure. Results indicate an optimal microwave irradiation period for the rapid failure of mineral boundary. Moreover, irradiation time and energy consumption can be reduced by increasing the microwave power density. However, irradiation time and energy consumption are basically unchanged when the microwave power density is above a certain threshold. Mineral content slightly affects the microwave irradiation time, whereas mineral crystal size significantly affects the microwave irradiation time. In addition, a larger-sized mineral crystal requires less irradiation time and energy consumption to reach the same failure rate. However, irradiation time and energy consumption slightly change when the crystal size is larger than a certain value.https://www.fracturae.com/index.php/fis/article/view/1612Microwave heating
spellingShingle Qin Like
Dai Jun
Yuan Liqun
Meso-mechanics simulation analysis of microwave-assisted mineral liberation
Fracture and Structural Integrity
Microwave heating
title Meso-mechanics simulation analysis of microwave-assisted mineral liberation
title_full Meso-mechanics simulation analysis of microwave-assisted mineral liberation
title_fullStr Meso-mechanics simulation analysis of microwave-assisted mineral liberation
title_full_unstemmed Meso-mechanics simulation analysis of microwave-assisted mineral liberation
title_short Meso-mechanics simulation analysis of microwave-assisted mineral liberation
title_sort meso mechanics simulation analysis of microwave assisted mineral liberation
topic Microwave heating
url https://www.fracturae.com/index.php/fis/article/view/1612
work_keys_str_mv AT qinlike mesomechanicssimulationanalysisofmicrowaveassistedmineralliberation
AT daijun mesomechanicssimulationanalysisofmicrowaveassistedmineralliberation
AT yuanliqun mesomechanicssimulationanalysisofmicrowaveassistedmineralliberation