cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Jurnal Mineral
Contact Email
mineral.ubb@ubb.ac.id
Phone
+6281373020110
Journal Mail Official
mineral.ubb@ubb.ac.id
Editorial Address
Gedung Dharma Pengabdian, Fakultas Teknik Universitas Bangka Belitung, Kampus Terpadu UBB, Balunijuk Provinsi Kepulauan Bangka Belitung
Location
Kab. bangka,
Kepulauan bangka belitung
INDONESIA
MINERAL
Published by Universitas Bangka Belitung
ISSN : 25407708     EISSN : 2620729X     DOI : https://doi.org/10.33019/mineral.v6i2
Core Subject : Science, Social, Engineering,
Earth & Planetary Sciences Energy Engineering Environmental Science Materials Science & Nanotechnology
The scientific journal called MINERAL is a scientific periodical publication of Mining Engineering Department , Bangka Belitung University, which is published every April and October in a year which the scope of Exploration (Geology and Geophysics), Geotechnical / Geomechanics, Minerba Processing, Minerba Management and Economics, Mining Environment, Reclamation and Post-Mining. This journal collaborates with Association of Indonesian Mining Professionals (PERHAPI) Center and Forum Komunikasi Program Studi Teknik Pertambangan se-Indonesia.
Arjuna Subject : Ilmu Bumi dan Planet (semua kategori) - Ilmu Bumi dan Planet (Lain-Lain)
Articles 5 Documents
 1 
Search results for , issue "Vol 3 No 2 (2018): MINERAL" : 5 Documents clear
Kajian Teknis Geometri Jalan Tambang Front 242 Untuk Pencapaian Produktivitas Alat Angkut Di PT Semen Padang (Persero) Tbkntuk Pencapaian Produktivitas Alat Angkut Di PT Semen Padang (Persero) Tbk Jeffry Reynold Silalahi; Delita Ega Andini; Guskarnali Guskarnali
MINERAL Vol 3 No 2 (2018): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (792.971 KB) | DOI: 10.33019/mineral.v3i2.1581

Abstract

PT Semen Padang (Persero) Tbk is one of the cement producing companies in Indonesia. The supply of limestone used as the main raw material in the manufacture of cement is obtained through the mining process in the IUP area of ​​the company. Mining roads are one of the facilities that must be considered in limestone mining activities because it is a major support in the process of transporting limestones obtained from the working Front. Inadequate road conditions can lead to less productive means of transport in the transport process, which causes production inaccessibility. The mining roads in the 242 working Front are considered to be poor so that a technical study of the mine road is required in accordance with the AASHTO Manual Rular Highway Design standard so that the geometry of the mine road is not good enough so that improvements can be made, engineering studies include road width, cross slope, superelevation, road slope, as well as a study of the carrying capacity of the soil and the influence of the mine road on fuel consumption. Based on the results of the study, the geometry of the mine road is as followsthe haulage width of one lane is minimum 14 m, the width of the haul road is two lanes of 24 m, the width of the two lanes is 25 m minimum, the superelevation value is 1%, cross slope is 48 cm, the slope can be 16% of the vehicles are transported while the slope based on AASHTO is 10%, the slope of the road becomes the biggest factor that influences fuel consumption because it makes the conveyance exert great power. Mine path geometry that is not suitable causes a time of barrier of 86.85 seconds with a cycle time of 22.3 minutes using an average speed of 15 km / h resulting in a production of 1,343.04 tons / hour, while if made temporary road the transport means can reach ideal speed with time on average 29 km / h and 27 km / h, cycle time 17.75 minutes with a production of 1,687.4 tons / hour.
Studi Penggunaan Kapur Tohor Dalam Proses Penetralan Air Asam Tambang Di KPL Pit 3 Barat IUP Tamban Penggunaan Kapur Tohor Dalam Proses Penetralan Air Asam Tambang Di KPL Pit 3 Barat IUP Tambang Banko Barat PT Bukit Asam Tbk Tanjung Enim Sumatera Selatan Ester Indah Sari; E.P.S.B Taman Tono; Guskarnali Guskarnali
MINERAL Vol 3 No 2 (2018): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (328.105 KB) | DOI: 10.33019/mineral.v3i2.1582

Abstract

The process of acid mine drainage in settling pond Pit 3 Barat Banko Barat PT Bukit Asam Tbk uses quicklime for berries carried out in the first inlet or pond channel. The pH value after the neutralization process has fulfilled the environmental quality standard value of 6-9 but the use of quicklime is less effective because it does not match the amount of water in the settling pond Pit 3 Barat Banko Barat. This can affect the economic use of quicklime in the Settling Pond. Therefore, testing and recalculation are needed in order to know the amount of quicklime to neutralize acid mine drainage and the cost of using lime needed based on the volume of water in the settling pond. The actual data in the field for the use of quicklime is 0.4 gr / l to be able to centralize acid mine drainage in accordance with environmental quality standards. This research method is testing 13 samples of acid mine neutralizing water in the laboratory with the addition of quicklime in order to calculate the amount of quicklime and the cost of using quicklime which is needed to neutralize acid mine drainage. Test results in the laboratory obtained a dose of quicklime of 0.2 gr / l to be able to neutralize the water to fit Environmental Quality Standards with an initial pH value of 3.43 to 7.11 after adding quicklime. The volume of water used is the settling pond volume which is 3,600,000 l. The amount of quicklime needed after testing in the laboratory is 18 sacks, while the actual amount of quicklime used in the field is 36 sacks. The actual cost required in using lime based on data in the field is Rp 1,224,000.00 and the cost of using quicklime based on laboratory testing data is Rp 612,000.00
EFEKTIVITAS PENGGERUSAN BIJIH TIMAH PRIMER MENGGUNAKAN BALL MILL DI PT MENARA CIPTA MULIA DESA SENYUBUK KABUPATEN BELITUNG TIMUR Eko Prayitno; E.P.S.B Taman Tono; Alfitri Rosita
MINERAL Vol 3 No 2 (2018): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (552.131 KB) | DOI: 10.33019/mineral.v3i2.1583

Abstract

PT Menara Cipta Mulia is a primary tin mining company. The primary tin ore processing process includes comminution, sizing and concentration activities. The stage of primary tin ore comminution begins with the crushing process using a jaw crusher and then refined using a ball mill again. Ball mill is a form that is used to shrink the grain size of materials to obtain finer materials (fine materials) and preparation of the right size for the concentration process, namely size 60.degree. -200 mesh. Variable ball mill settings that are not appropriate welcome coarse ball mill scouring material (20 s.d. 50 mesh), so we need to do the grinding again because the minerals have not been taken from the impurity minerals. The ineffective process of grinding primary tin ore records high production costs. The experiment was carried out with bait stimulating variables 3-4 TPH, 4-5TPH, and 5-6 TPH. The bait size is 0-2 cm, 0-4 cm and 0-6 cm. The air rate is 4.436 l/h, 7.394 l/h, and 11.091 l/h. The experiment was conducted 27 times with the combined formula for the results of scouring the ball mill. Based on the experiments carried out, the right material for the process of concentration size 60 s.d. Was obtained. -200 mesh, because the size of the mineral has been released from the impurity minerals. The smaller feed bait, bait size, and air flow obtained from the materials resulting from the grinding of ball mill 60 mesh up to -200 mesh height. Effectiveness of grinding get in sample 19 with the highest production value of 5 s.d. 6 TPH. This parameter is used to get the right results for the concentration process, which is 60 mesh size. -200 mesh. The effective value of the feed rate variable 5 d. 6 TPH, feedback size 0-2 cm, and water rate 4.336 l/h.
PENGARUH VARIABEL SHAKING TABLE TERHADAP KADAR DAN RECOVERY PENCUCIAN BIJIH TIMAH PRIMER PT MENARA CIPTA MULIA KABUPATEN BELITUN VARIABEL SHAKING TABLE TERHADAP KADAR DAN RECOVERY PENCUCIAN BIJIH TIMAH PRIMER PT MENARA CIPTA MULIA KABUPATEN BELITUNG TIMUR Dihan Fauzan; Janiar Pitulima; Delita Ega Andini
MINERAL Vol 3 No 2 (2018): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (576.334 KB) | DOI: 10.33019/mineral.v3i2.1584

Abstract

The process of washing primary tin ore at PT Menara Cipta Mulia in the final stage uses gravity concentration method to separate mineral cassiterite from its impurity minerals. The separation process uses a shaking table with 2 stages of washing to minimize the waste of valuable minerals (losses). In the initial stages of washing, the primary shaking table and finishing stages use secondary shaking table. Currently the use of shaking tables at PT MCM does not have default standards in operation and still uses trial and error. Reseach method by varying the slope variables of the table in the primary tool shaking table 4 variations, namely 0.95°, 1.27°, 1.59°, 1.91° and washing water velocity of 3 variations, namely 0.6 m/s, 0.9 m/s, 1.2 m/s while on secondary shaking table tools 3 variations are slope that is 0.64°, 0.95°, 1.27° and washing water velocity of 3 variations is 0.6 m/s, 0.9 m/s, 1.2 m/s with this variable variation, the sample is obtained for the grade test and recovery calculation. The optimal results on the primary shaking table were at 1.27 degrees with an average recovery of 56.43% and grade Sn of 51.28%. Optimal water velocity is 0.9 m/s with an average recovery of 50.97% and grade Sn of 52.19%. While the optimal results for the secondary shaking table are at a slope of 0.64 degrees with recovery averaging 40.88% and grade of 71.64% with an optimal water velocity is 0.9 m/s with an average recovery of 32.24% with concentrate grade Sn 72.18%. The greater the value of the slope angle and water velocity be used, the smaller the recovery of washing tin ore produced but the smaller the recovery value indicates the higher the concentration of the resulting concentrate.
Pengaruh Fragmentasi Hasil Peledakan Batugranit Terhadap Produktivitas Hopper Crusher Di PT Bumi Warna Agung Perkasa Desa Air Mesu Kabupaten Bangka Tengah Bobby Bagaskara; Janiar Pitulima; Delita Ega Andini
MINERAL Vol 3 No 2 (2018): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (472.988 KB) | DOI: 10.33019/mineral.v3i2.1585

Abstract

The destroyed process or to split the rock with blasted system have effective value and good economic compared with mechanical tools method. Blasted activity effective become is anothere standard the success of activity loading processing to influence achievement targets of mining productivity. This research aim to increasing the productivity hopper crusher baited rate and minimize total percentage of boulder, so that material reduction activity in hopper crusher become was more effective. The study was on 14 blasted is project from PT Bumiwarna Agung Perkasa. Data this research consist of geometry, blasted fragmentation, cycle time loading hopper. This research used method with geometry an estimates used R.L.Ash method with fragmentation analysis used Kuz-Ram and image analysis. From analysis data there is actual fragmentation 74.680% base on Kuz-Ram and 64.942% base on image analysis with an actual boulder total Kuz-Ram 25.320 % and 35.057% base on image analysis, with result the average time reduction 8.21 minute and an average productivity 131.80 m3/hour. It is minimize total percentage of boulder, needed to revise blasted geometry based on R.L. Ash theory with reduction boulder size >80 cm by 12.042% with keep the target volume production 40026.8 BCM. It is productivity hopper crusher may work better.

Page 1 of 1 | Total Record : 5

 1 

Filter by Year

2018 2018


Reset
Filter By Issues
All Issue Vol 10 No 2 (2025): MINERAL Vol 10 No 1 (2025): MINERAL Vol 9 No 2 (2024): MINERAL Vol 9 No 1 (2024): MINERAL Vol 8 No 2 (2023): MINERAL Vol 8 No 1 (2023): MINERAL Vol 7 No 2 (2022): MINERAL Vol 7 No 1 (2022): MINERAL Vol 6 No 2 (2021): MINERAL Vol 6 No 1 (2021): MINERAL Vol 5 No 2 (2020): MINERAL Vol 5 No 1 (2020): MINERAL Vol 4 No 2 (2019): MINERAL Vol 4 No 1 (2019): MINERAL Vol 3 No 2 (2018): MINERAL Vol 3 No 1 (2018): MINERAL Vol 2 No 2 (2017): MINERAL Vol 2 No 1 (2017): MINERAL Vol 1 No 1 (2016): Mineral More Issue