Hexatech: Jurnal Ilmiah Teknik
Vol. 1 No. 1 (2022): Hexatech : Jurnal Ilmiah Teknik

Pengaruh Suhu dan Waktu Pemanasan terhadap Nilai HGI pada Sampel Batubara di PT. Bukit Asam Tbk

Muhammad Abdul Ghony (Program Studi Teknik Pengolahan Hasil Tambang Mineral dan Batubara, Akademi Komunitas Industri Pertambangan Bukit Asam)

Article Info

Publish Date
28 Feb 2022

Abstract

HGI is a laboratory measurement of the ease or difficulty of grinding or pulverizing coal. The grinding index value determines the time and effort required to grind coal to a certain fineness. This test is determined by preparing a certain grain size to be ground using a machine under standard conditions and the amount of coal being crushed is compared to the standard linearity of coal. The HGI standard values ​​that have been certified using ASTM standards are 32, 49, 65, and 95. This study consisted of variables, namely temperature and heating time, and related variables, namely HGI values. HGI data retrieval after heating minutes was carried out on coal samples with heating temperatures of 50˚C, 100˚C, 150˚C and 200˚C and heating times of 30 minutes, 60, 90 minutes and 120 minutes. The condition of the optimum HGI value was obtained at a heating temperature of 100℃ and a time of 60 minutes with an HGI value of 70.2558,. This index is very helpful in assessing the capacity of the mill used to grind coal to the required size for feed to the furnace besides HGI also affects how the coal is distributed in the lifting equipment properly.

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Journal Info
Hexatech: Jurnal Ilmiah Teknik
Website

Abbrev

hexatech

Publisher

Arka Institute

Subject

Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering Transportation

Description

Hexatech: Technical Scientific Journal (E-ISSN: XXXX-XXXX, P-ISSN: XXXX-XXXX) is a journal that publishes Focus & Scope research articles, which include: 1. Civil Engineering 2. Architecture 3. Marine Engineering 4. Mining Engineering 5. Electrical Engineering 6. Industrial Engineering 7. Mechanical ...