COAL FRAGMENTATION MODELING IN THE ZIRAB MINE, IRAN

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YAZDI M.; ESMAEILNIA A.

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Journal: JOURNAL OF SCIENCES (ISLAMIC AZAD UNIVERSITY) Year:2009 | Volume:19 | Issue:73 (GEOLOGY ISSUE) Page(s): 73-86

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Information Journal Paper

Title

COAL FRAGMENTATION MODELING IN THE ZIRAB MINE, IRAN

Author(s)

YAZDI M. | ESMAEILNIA A. | Issue Writer Certificate

Keywords

FRAGMENTATION MODELQ3

ZIRAB COAL MINEQ3

CENTRAL ALBORZQ3

IRANQ3

Abstract

Introduction: IRAN`s coals occur in the Alborz range (north) and Central IRAN basins. The Zirab is typical coalfield in the Alborz coal basin. These coals are mainly clarovitrinite to clarodurite type which are used as source of coking coal for metallurgical factories. During the research we used 10 typical samples from ZIRAB COAL MINE to estimate FRAGMENTATION MODEL of natural particle-size distribution of these coals.Aim: Particle-size distributions of rocks are often used to estimate FRAGMENTATION MODEL. Prediction of fragmentation properties from coals is the main aim of this research. In order to calculate the FRAGMENTATION MODEL at any stage of the extraction (or sizing) operation, we tried to develop a model that combines both natural fragmentation and degradation through natural crushing. The natural fragmentation is calculated with a modified version of the Kuz-Ram model that improves the prediction of the fine portion of the product.Materials and Methods: Our studies showed that during the fall of coals from 4m height, fragmentation followed average range of 5 percent, per time for particles smaller than a 5mm diameter.Conclusions: It means that if the processes would repeat 20 times, 100 percent of coals would crush to the size of less than 5mm. Also, the results showed that a power-law relation between mass and size of coal particles.

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APA: Copy

YAZDI, M., & ESMAEILNIA, A.. (2009). COAL FRAGMENTATION MODELING IN THE ZIRAB MINE, IRAN. JOURNAL OF SCIENCES (ISLAMIC AZAD UNIVERSITY), 19(73 (GEOLOGY ISSUE)), 73-86. SID. https://sid.ir/paper/70309/en

Vancouver: Copy

YAZDI M., ESMAEILNIA A.. COAL FRAGMENTATION MODELING IN THE ZIRAB MINE, IRAN. JOURNAL OF SCIENCES (ISLAMIC AZAD UNIVERSITY)[Internet]. 2009;19(73 (GEOLOGY ISSUE)):73-86. Available from: https://sid.ir/paper/70309/en

IEEE: Copy

M. YAZDI, and A. ESMAEILNIA, “COAL FRAGMENTATION MODELING IN THE ZIRAB MINE, IRAN,” JOURNAL OF SCIENCES (ISLAMIC AZAD UNIVERSITY), vol. 19, no. 73 (GEOLOGY ISSUE), pp. 73–86, 2009, [Online]. Available: https://sid.ir/paper/70309/en

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