<mets:mets xsi:schemaLocation="http://www.loc.gov/METS/ http://www.loc.gov/standards/mets/mets.xsd http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-3.xsd" OBJID="eprint_42912" LABEL="Eprints Item" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mets="http://www.loc.gov/METS/"><mets:metsHdr CREATEDATE="2026-05-24T21:26:49Z"><mets:agent TYPE="ORGANIZATION" ROLE="CUSTODIAN"><mets:name>Repository Universitas Negeri Padang</mets:name></mets:agent></mets:metsHdr><mets:dmdSec ID="DMD_eprint_42912_mods"><mets:mdWrap MDTYPE="MODS"><mets:xmlData><mods:titleInfo><mods:title>Analisis Pengaruh Perubahan Nilai Total Moisture, Ash Content dan Total Sulphur terhadap Nilai Kalori Batubara Bb-50 di Tambang Banko Barat Pt. Bukit Asam, Tbk. Tanjung Enim Sumatera Selatan</mods:title></mods:titleInfo><mods:name type="personal"><mods:namePart type="given">Muhammad Agil</mods:namePart><mods:namePart type="family">Fadhili</mods:namePart><mods:role><mods:roleTerm type="text">author</mods:roleTerm></mods:role></mods:name><mods:abstract>Salah satu jenis batubara yang ditambang di PT Bukit Asam Tbk adalah batubara BB-50. Batubara yang ditambang di front kemudian ditumpuk di stockpile dan dilakukan pengiriman menggunakan kereta api, dalam pendistribusian batubara tersebut ditemukan terjadinya perbedaan kualitas batubara. Penelitian ini bertujuan mendapatkan perbedaan nilai kalori (GCV), total moisture, ash content dan total sulphur di front, stockpile dan gebong kereta api serta pengaruh parameter tersebut terhadap nilai kalori (GCV). Analisis menggunakan metode statistika yaitu statistik deskriptif, independent samples t-test, one way anova, korelasi dan regresi. Rata – rata nilai kalori (GCV) di front, stockpile dan gerbong kereta api secara berurutan sebesar 5037 Kcal/Kg.Ar, 4928 Kcal/Kg.Ar dan 4869 Kcal/Kg.Ar, rata – rata nilai total moisture secara berurutan sebesar 27,87%.Ar, 27,84%.Ar dan 29,49%.Ar, rata – rata nilai ash content secara berurutan sebesar 2,01%.Ar, 4,01%.Ar dan 3,63%.Ar dan rata – rata nilai total sulphur secara berurutan sebesar 0,49%.Ar, 0,41%.Ar dan 0,51%.Ar. Parameter yang mengalami perbedaan signifikan dari front hingga gerbong kereta api adalah nilai kalori mengalami penurunan sebesar 96,056 – 240,610 Kcal/Kg.Ar, total moisture mengalami kenaikan sebesar 0,851 – 2,38 %.Ar dan ash content mengalami kenaikan sebesar 1,6 – 2,18 %.Ar. Penurunan dan kenaikan parameter kualitas batubara disebabkan karena terdapatnya kontaminasi, kegiatan pengangkutan batubara, fine coal akibat proses handling, ukuran butir yang tidak seragam serta cuaca dan iklim. Pengaruh parameter total moisture, ash content dan total sulphur terhadap nilai kalori dinyatakan dalam persamaan GCV = 641,204 + 1,029TS – 63,781TM – 57,69Ash.</mods:abstract><mods:classification authority="lcc">T Technology (General)</mods:classification><mods:classification authority="lcc">TN Mining engineering. Metallurgy</mods:classification><mods:originInfo><mods:dateIssued encoding="iso8601">2019-06</mods:dateIssued></mods:originInfo><mods:originInfo><mods:publisher>Universitas Negeri padang;TEKNIK PERTAMBANGAN FT UNP</mods:publisher></mods:originInfo><mods:genre>Thesis</mods:genre></mets:xmlData></mets:mdWrap></mets:dmdSec><mets:amdSec ID="TMD_eprint_42912"><mets:rightsMD ID="rights_eprint_42912_mods"><mets:mdWrap MDTYPE="MODS"><mets:xmlData><mods:useAndReproduction>
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