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All Journal JURNAL ILMIAH PENDIDIKAN FISIKA AL BIRUNI Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Riset Fisika Indonesia MINERAL Dharma Pengabdian Perguruan Tinggi (DEPATI)
Indriawati, Anisa
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Journal : MINERAL

 1 
PERENCANAAN TEKNIS OPERASI PRODUKSI BIJIH TIMAH DI BLOK 3 TAMBANG BESAR 2.1 MITRA PT TIMAH (PERSERO) TBK: Technical Planning for The Operation of Tin Ore Production at Block 3 Tambang Besar2.1 Partner of PT Timah (Persero) Tbk Hafizh, Awwab; Tono, E.P.S.B Taman; Indriawati, Anisa
MINERAL Vol 2 No 1 (2017): MINERAL
Publisher : Program Studi Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/mineral.v2i1.1540

Abstract

The process of tin ore mining in TB 2.1 is conducted by channeling slurry (the mixture of ore and water) from the stock pile into the washing unit by using slurry pump. Now, TB 2.1 is planning block 3 for the operation of tin ore production proceess. Thus, a good technical planning in accordance with the characteristic of tin ore in TB 2.1 and evaluation of operating system design in Block 1 are necessary. The sample of tin ore concentrate is taken as many as 250 gr from the washing unit to detect P80 of particle size distribution (PSD) of sample. The data of sucker and pressure pipe’s lenghth, store tank’s height, quantity of primary and secondary jig and tin ore monthly production are required to furthermore plan the mining design, washing plant and equipment needs in the drying unit. Based on the research findings, It is obtained the grain size distribution of tin ore is 1.001 mm, so that the amount of lifting velocity is 3.27 m/s. Slurry pump discharge with a pipe’s diameter of 10 inches is 54 m3/hour, while total head of mining design is 30.23 m. Width of launder required is 6.5 m and equipped with two Grizzlies. Washing plant requires three units of primary Jig (2 × 3 cell) and a unit of secondary jig (2 × 3 cell). Adding rotary vibrating screen, shaking table and rod mill are necessary for process optimization in the drying unit.
Analisa Pengaruh Ground Vibration terhadap Stabilitas Low Wall Blok Muara Tiga Besar Utara Pit Timur Menggunakan Software GeoStudio 2012 di PT Bukit Asam (Persero) Tbk, Kabupaten Muara Enim: Analysis of The Effect of Ground Vibration on The Stability of The Low Wall BlockNorth Muara Tiga Besar East Pit Using Software GeoStudio 2012 at PT Bukit Asam (Persero) Tbk, District of Muara Enim Antasari, Deza Pahlevi; Irvani, Irvani; Indriawati, Anisa
MINERAL Vol 2 No 1 (2017): MINERAL
Publisher : Program Studi Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/mineral.v2i1.1546

Abstract

Ground vibration will produce variable Peak Particle Acceleration (PPA) which endanger the stability of the slope especially low wall. This study discusses the effect of ground vibration on the stability of the low wall and restricted in Block MTBU East Pit. While the slope analysis conducted by the method of Morgenstern-Price (1965) Manually and Software GeoStudio 2012, as well as statistical regression analysis approach in finding a relationship between the variables SD-PPA and PPA-FK. The higher the value of the PPA will lower prices Safety Factor (FK) of slope, proved to vibration FK 0.0133 g yield of 1.258 (C-C’) and 1.292 (D-D’), whereas the vibrations of 0.225 g yield of 0.771 FK (C- C’) and 0.768 (D-D’). The relationship between the scaled distance (SD) of the PPA produces non-linear relationship on a graph of power. The relationship between PPA against FK produces a linear relationship on the Section C-C’ and Section D-D’. The proposal obtained at a distance of 200 m from the blasting area 29.352 kg and at a distance of 500 m is 183.447 kg maximum load of explosives.
Optimalisasi Unit Peremukan Dalam Pencapaian Target Produksi 60.000 Ton/Bulan Batu Granit pada Pt Vitrama Properti di Desa Air Mesu Kabupaten Bangka Tengah: Optimalization of Crushing Plant in Achieving The Production Target of 60.000 Tons/month Granite in PT Vitrama Properti at Air Mesu Village Central Bangka Regency Setiawan, Ahmad Reza; Tono, E.P.S.B Taman; Indriawati, Anisa
MINERAL Vol 3 No 1 (2018): MINERAL
Publisher : Program Studi Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/mineral.v3i1.1569

Abstract

Granite crushing plant in PT Vitrama Properti is divided into two units, namely primary crusher and secondary crusher with production targets at 60,000 tons/month, but production target had not been reached. Therefore, to achieve the production target, it was necessary to analyze the optimalization of the crushing process starting from the assessment of the availability, the working efficiency of the operator, the feed rate and production capacity of crushing plant by using statistical and mathematical methods. In September 2016, the actual working efficiency of primary crusher unit and secondary crusher unit were very low at 15,75 % and 24,75 % with production only amounted to 16771.49 tons/month and 16,135,59 tons/month. The efforts undertaken in order to achieve production targets are: 1) Increase the actual working efficiency in the primary crusher previously 15,75 to 83.14%, while the secondary crusher previously 24,75 % to 83.27 % 2) Increase the feed rate to the secondary crusher previously 283,44 tons/hour to 320 tons/hour.
KajianEkonomis Perencanaan Pengeboran Dan Peledakan Antara Kemitraan Dengan PT Bukit Asam (Persero) Tbk Pada Wilayah Pit II Banko Barat Di Tanjung Enim Sumatera Selatan: Economical Study of Drilling and Blasting planning Betweeen Partnership With PT Bukit Asam (Persero) Tbk The Pit Area II Banko West at Tanjung Enim South Sematera Tampubolon, Amri; Tono, E.P.S.B Taman; Indriawati, Anisa
MINERAL Vol 3 No 1 (2018): MINERAL
Publisher : Program Studi Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/mineral.v3i1.1570

Abstract

In 2017 PTBA plans to open pit mining in Banko Barat Pit II uses a system of drilling and blasting. Drilling and blasting activities aimed memberai hard material to support the process of making material by excavator-unloading With limited human resources drilling and blasting is currently assisted by partners. To get the maximum benefit with minimum cost necessary to study the cost of drilling and blasting between using the cost of services partners or self-management tool by PTBA.Planning of drilling and blasting costs PTBA version used by the method of self-management tools while the costs of drilling and blasting use the services of the partnership using the mail service offering. Geometri blasting used method R.L Ash so that would be obtained comparative cost planning and drilling and blasting between PTBA and partner services.The cost of drilling obtained using a self-management tool values ​​obtained Rp 13.021.982.688/tahun, while using the services of the partnership obtained the value of Rp 26.472019.517/year. The cost of blasting using a self-management tool values ​​obtained Rp 44.767.919.566/year, while using the services of the partnership obtained the value of Rp 51.750.738.054/year. The total cost of drilling and blasting self-managed appliance obtained the value of Rp 57.789.902.254/year more economical compared with services partnership with a value of Rp 78.222.757.571/year, these results show the difference in cost of Rp 20.432.855.317/year.
Analisis Kestabilan Lereng Tunggal Menggunakan Metode Fellenius dan Slide v.6.0 serta Lereng Keseluruhan dengan GeoStudio 2012 pada Pit I Banko Barat PT Bukit Asam (Persero) Tbk Tanjung Enim – Sumatera Selatan: Single Slope Stability Analysis using Fellenius Method and Slide v.6.0 and Overall Slope Stability with GeoStudio 2012 at Pit I Banko Barat PT Bukit Asam (Persero) Tbk Tanjung Enim –South Sumatera Simanjuntak, Devito Wirasto; Fahraini, Ferra; Indriawati, Anisa
MINERAL Vol 3 No 1 (2018): MINERAL
Publisher : Program Studi Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/mineral.v3i1.1576

Abstract

Slopes are a topography that is often found in opened pit mine that had been made by humans with the purpose of exploiting minerals that exist. Landslides can occur on any slopes that is formed due to the increase of shear stress, shear strength declining in the field of landslides or both simultaneously. Slope stability analysis performed to obtain the value of the safety factor of the field of potential landslides. The study conducted at a coal mine Pit 1 Banko Barat PT Bukit Asam (Persero) Tbk by comparing the value of a single slope safety factor Fellenius with manual method to Slide v.6.0 software and the overall slope safety factor with software GeoStudio 2012 From the analysis performed on a single slope 1 to 9, safety factor values ​​obtained below 1.25 for single slopes 1 and single slope 2 to 9 above 1.25. Of the value of the safety factor is obtained, a single slope 1 in critical condition and the single slopes 2 to 9 in stable condition. While the overall slope stability analysis using GeoStudio 2012 program obtained average value of the safety factor - average is 4.57 so the slope can be declared in a stable condition. Then there are effforts to increase the safety factor (FK) of single slopes by changing a single slope geometry previously at an angle of 55 ° to 47 ° in order to obtain the condition of the slopes in a stable condition.
Co-Authors Adi Kurniawan Afni, Githa Nurvilia Akbar, Jefri Andina Syafrina Antasari, Deza Pahlevi Asisah, Tina Awwab Hafizh Azrul Fahmi Daus, Reza Firdaus Fir Dea Amelia, Dea Erman Taer Fahraini, Ferra Gusnia, Eri Herman Aldila Indah Puspita, Indah Irvani, Irvani Marina, Dewi Miratsi, Lizia Permono Adi Putro Rokar, Risna Kirana Sahroni, Muhammad Saputri, Riny Setiawan, Ahmad Reza Simanjuntak, Devito Wirasto Tampubolon, Amri Tono, E.P.S.B Taman Tri Kusmita vavionita, Fenni Widodo Budi Kurniawan Widyaningrum, Yekti