PRADANI, DIANA IRMAWATI (2013) PERBEDAAN KUALITAS BATUBARA DI PIT TUTUPAN SAMPAI DENGAN DI ROM STOCKPILE 17 PT.ADARO INDONESIA PROVINSI KALIMANTAN SELATAN. Other thesis, UPN "Veteran" Yogyakarta.
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Abstract
PT. Adaro Indonesia merupakan perusahaan yang bergerak dalam bidang pertambangan batubara. Dalam kegiatannya PT. Adaro Indonesia melakukan pengawasan terhadap kualitas batubara yang akan dikirim kepada konsumen agar sesuai dengan standar kualitas batubara yang telah ditetapkan oleh perusahaan. Pengawasan terhadap perubahan kualitas batubara dilakukan dari front penambangan sampai penimbunan batubara pada ROM Stockpile 17. Perubahan kualitas batubara dapat diketahui berdasarkan hasil sampling batubara yang dilakukan oleh tim quality control PT. Adaro Indonesia. Sampling batubara dilakukan pada front penambangan dan pada saat penimbunan di ROM Stockpile 17. Dari data uji analisa kualitas batubara yang telah dilakukan, dapat diketahui perubahan kualitas yang terjadi, yaitu : a. Kandungan total moisture batubara T120 berdasarkan data bor, front penambangan, dan ROM stockpile 17 sebesar 27,3%, 29,3%, dan 28,7%. Kandungan total moisture batubara T200 berdasarkan data bor, front penambangan, dan ROM stockpile 17 sebesar 27,8%, 30,1%, dan 30,5%. b. Kandungan abu batubara T120 berdasarkan data bor, front penambangan dan ROM stockpile 17 sebesar 1,5%, 1,6%, dan 1,7%. Kandungan abu batubara T200 berdasarkan data bor, front penambangan dan ROM stockplile 17 sebesar 0,9%, 1,3%, dan 3%. c. Nilai kalor (Calorivic Value) batubara T120 berdasarkan data bor, front penambangan dan ROM stockpile 17 sebesar 4835 Kkal/Kg, 4819 Kkal/kg, dan 4803 Kkal/kg. Nilai kalor (Calorivic Value) batubara T200 berdasarkan data bor front penambangan dan ROM stockpile 17 sebesar 4887 Kkal/Kg , 4695 Kkal/kg, dan 4518 Kkal/kg. Penyebab terjadinya perubahan kandungan total moisture, kandungan abu dan nilai kalor pada ROM Stockpile 17 yaitu antara lain sistem penyaliran yang tidak berfungsi secara optimal, terjadinya degradasi ukuran butir halus batubara yang memudahkan untuk menyerap lebih banyak air, debu yang berterbangan disekitar penimbunan, dan lantai dasar penimbunan yang ikut tergali saat pembongkaran. Dari hasil pengamatan yang dilakukan, perlu dilakukan upaya-upaya agar penurunan kualitas batubara dapat diminimalisir, yaitu diantaranya : a. Memperbaiki sistem penyaliran pada ROM Stockpile 17 agar dapat berfungsi secara optimal. b. Melakukan penyiraman jalan untuk mengurangi debu yang bertebangan. c. Melakukan pembongkaran batubara dimana letak bucket wheel loader sedikit lebih tinggi dari lantai dasar timbunan kurang lebih 15 cm agar tanah tidak ikut tergali. d. Pada sekeliling ROM Stockpile bipasang penangkal angin berupa pohon atau tumbuh-tumbuhan besar sehingga debu dapat terhalang dan mengurangi banyaknya debu yang menempel PT. Adaro Indonesia is a company engaged in coal mining. PT. Adaro Indonesia activities is to supervise the quality of coal to be delivered to the consumers in order to conform to the quality standards set by the coal companies. Coal Quality change monitoring was done from the front to the ROM coal stockpiling Stockpile 17. Changes in coal quality can be determined based on the results of the coal sampling conducted by a team of quality control PT. Adaro Indonesia. Sampling of coal mining is done on the front and at the time of accumulation in ROM Stockpile 17. Coal quality test data analysis that has been done, it can be seen that the quality changes occur,that is : a. Total moisture of the coal T120 based on drill data, mining front, and ROM stockpile 17 of 27.3%, 29.3%, and 28.7%. Total moisture of the coal T200 based on drill data, mining front, and ROM stockpile 17 was 27.8%, 30.1%, and 30.5%. b. T120 Ash content based on drill data, mining front and 17 ROM stockpile of 1.5%, 1.6%, and 1.7%. T200 ash content based on drill data, mining and ROM front stockplile 17 of 0.9%, 1.3%, and 3%. c. Calorific value based on the data of coal T120 drill, front mining and ROM stockpile 17 of 4835 Kcal / kg, 4819 Kcal / kg, and 4803 Kcal / kg. Calorific value based on drill data T200 coal mining front and ROM stockpile 17 of 4887 Kcal / kg, 4695 Kcal / kg and 4518 kcal / kg. The cause of the change in total moisture content, ash content and calorific value of the ROM Stockpile 17 among other drainage system that was not functioning optimally, the degradation of the fine grain size of the coal that makes it easy to absorb more water,dust floating around the stockpile, and the ground floor stockpiling excavated while participating demolition. From the observations made, it is necessary efforts in order to minimize loss of quality coal, some of them: a. Repair the drainage system in ROM Stockpile 17 in order to make it function optimally. b. Perform road watering to reduce the fly dust. c. The demolition of the coal bucket wheel loader where lies a little higher than the ground floor embankment approximately 15 cm so that the soil does not go untapped. d. Installing wind antidoteAt around ROM Stockpile in the form of trees or large plants and unobstructed so the amount of dust can be reduced.
| Item Type: | Thesis (Other) |
|---|---|
| Subjects: | T Technology > TN Mining engineering. Metallurgy |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Engineering Sciences |
| Depositing User: | Eko Suprapti |
| Date Deposited: | 23 May 2016 03:15 |
| Last Modified: | 23 May 2016 03:15 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/2052 |
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