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Volumetric Estimation of Coal Resources in Seam VI for Require Backfill Materials of Barapukuria Coal Mine, Dinajpur, Bangladesh
Md. Mostafijul Karim,
M. Farhad Howladar
Issue:
Volume 2, Issue 6, December 2013
Pages:
113-119
Received:
25 August 2013
Published:
20 October 2013
Abstract: Through the distinguish software application along with formal calculation method the study represents a volumetric estimation of require backfill Materials of Barapukuria coal mine in north western Bangladesh, the only coal mine of the country under production, which capable of a low recovery with sustaining mining method. The only productive coal seam of the mine, Seam VI is our main focus during the assessment. Different estimation method is applied to investigate the accuracy of calculation and find out the reasons beyond the deflections. Surfer 8.4 exploits two method of interpolation, inverse distance to power, a weighted average interpolator and Kriging, more flexible gridding method, those yields the volume of 169221180.5 cubic meters and 165323770.4 cubic meters respectively. On the contrary Rockworks is estimated the volume through Delaunay Triangulation method as 115,959,398.4 cubic meters whether another estimation which is made by inverse power weighting interpolation on saved stratigraphic model, gives 174,281,203 cubic meters volume, following 185,760,000 cubic meters through geological reserve calculation. After considering the interpolation approach, available data and previous study agreement, the result of inverse distance to power, at both of software’s is consider for backfill materials volume estimation. The required volume of backfill materials is 101532708.3 m3 and for 9% and 10% recovery that’s are 9137943.747 m3 and 10153270.83 m3 respectively. The daily requirement of backfill is 562 - 636 m3 and the system need to have a daily capacity of 702 – 795 m3.
Abstract: Through the distinguish software application along with formal calculation method the study represents a volumetric estimation of require backfill Materials of Barapukuria coal mine in north western Bangladesh, the only coal mine of the country under production, which capable of a low recovery with sustaining mining method. The only productive coal...
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Economic Evaluation of the Existing and Potential Indonesian Coal Utilization
Issue:
Volume 2, Issue 6, December 2013
Pages:
120-128
Received:
16 October 2013
Published:
10 November 2013
Abstract: The whole efforts of the Indonesian Government in diversifying the available domestic coal reserves in the forms of solid, liquid (synthetic oil) and gaseous fuel is made possible to overcome the depleted domestic oil reserves. Within the coming few years Indonesia will become net oil consumer after as the net oil importer in 2003. Within the current forty years Indonesian energy consumption was heavily depending on oil fuel. To meet the increasing domestic energy demand, the large quantity of domestic coal reserves should be diversified into briquette, synthetic oil and synthetic gas, and also as other non-fuel or chemical products. All these diversified products are expected to be competitive economically as well as environmental friendly by using clean coal technology. This article is as result of evaluation of the existing commercial scale utilization and the research results compilation of the Indonesian coal utilization and diversification within the last 15 years.
Abstract: The whole efforts of the Indonesian Government in diversifying the available domestic coal reserves in the forms of solid, liquid (synthetic oil) and gaseous fuel is made possible to overcome the depleted domestic oil reserves. Within the coming few years Indonesia will become net oil consumer after as the net oil importer in 2003. Within the cu...
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Prospect of Potential Nickel Added Value Development in Indonesia
Issue:
Volume 2, Issue 6, December 2013
Pages:
129-138
Received:
16 October 2013
Published:
10 November 2013
Abstract: The effort of increasing mineral added value as a whole both vertical and regional is necessary required to improve the national income and regional development. The added value of nickel could be improved through developing the downstream industry such as stainless steel, non-ferrous alloys, other steel alloys, electroplating and chemicals, besides also its regional added value. The purpose of the study is to clarify the beneficial of nickel added value development for the wealth of the people of Indonesia through the improvement of the nickel sector economic added value which is beneficial for the national economic growth and the enlargement of the regional added value which is mainly beneficial for the welfare of the local people who live within the surroundings of the mine site. In fact, the development of both nickel added values have been carried out by the mining companies, even though it needs encouragement and enlargement within the coming years to increase its role to the economic development nationally as well as regionally or locally.
Abstract: The effort of increasing mineral added value as a whole both vertical and regional is necessary required to improve the national income and regional development. The added value of nickel could be improved through developing the downstream industry such as stainless steel, non-ferrous alloys, other steel alloys, electroplating and chemicals, beside...
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Overview of Arsenic Distribution in some Part of Biu Volcanic Province North-Eastern Nigeria
Usman,
Adamu Mohammed,
Lar,
Uriah Alexander
Issue:
Volume 2, Issue 6, December 2013
Pages:
145-148
Received:
29 October 2013
Published:
30 November 2013
Abstract: Overexposure to arsenic can cause various diseases such as cancer of (skin, lung, bladder, and kidney), hair loss and nails deformity. These diseases are common among adults, youth and children in some rural communities in Biu Volcanic Province North-Eastern Nigeria. This is what motivated the Authors to investigate the concentration of arsenic in surface and ground waters of Biu volcanic environment, northern eastern Nigeria and to delineate areas of high risk to arsenic exposure. Thirty seven water samples; thirteen surface water samples and twenty four ground water samples were analyzed using Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) at Geochemistry Laboratory, University of Jos, Nigeria. Arsenic concentrations range from 0.03 to 0.477 mg/L in the surface water and 0.006 to 0.424 mg/L in the ground water. This study indicates that people in Yimirshika Village might be at a considerable risk of arsenic poisoning.
Abstract: Overexposure to arsenic can cause various diseases such as cancer of (skin, lung, bladder, and kidney), hair loss and nails deformity. These diseases are common among adults, youth and children in some rural communities in Biu Volcanic Province North-Eastern Nigeria. This is what motivated the Authors to investigate the concentration of arsenic in ...
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The Potential Share of Coal Liquefaction in the Indonesian Economy in 2025
Ukar Wijaya Soelistijo,
Aryo Prawoto Wibowo,
Makmun Abdullah
Issue:
Volume 2, Issue 6, December 2013
Pages:
149-157
Received:
9 November 2013
Published:
30 November 2013
Abstract: One of the objectives of the National Energy Policy (KEN) of Indonesiawhich is listed in Perpres (Presidential Regulation) number 5/2006 is the realization ofan optimal energy mix in 2025 by lowering oil consumption to 20% and increased utilization of coal to greater than 33%. KEN also mandates that more than 2% of national energy needs is derived from coal liquefaction process. This research aim is to analyze atthe economic impact and linkages among sectors using Indonesian 2005 Input-Output Table which will be projected to 2025 by entering low-rank coal synthetic oil (CSO) sector as a new classification. Econometric models (regression analysis) and linear programming are applied in this research. The result of economic calculation of investation in CSO plants indicates that on the coal price assumption of US$60/ton, synthetic coal oil price of US$111/bbl, and the interest rate (i) 5%, in general will give the Internal Rate of Return (IRR) is less than 10%. Analysis of backward linkages shows that the CSO sector will have a potential increasing a new output for the economy higher than the other energy sectors, but lower rate of forward linkage (downstream). Meanwhile, the multiplier effect indicates that the development of CSO plant is capable of moving national economy sectors equivalent to the petroleum refining sector and other energy provider sectors.The lower surplus multiplier shows that the investment in the CSO sector will be attractive if the government gives incentives on the enterprise, things such as regulation and investing financial support, tax incentives/tax holiday, price subsidies, and the coal prices scheme arrangements.
Abstract: One of the objectives of the National Energy Policy (KEN) of Indonesiawhich is listed in Perpres (Presidential Regulation) number 5/2006 is the realization ofan optimal energy mix in 2025 by lowering oil consumption to 20% and increased utilization of coal to greater than 33%. KEN also mandates that more than 2% of national energy needs is derived ...
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Optimization of the Overall Equipment Efficiency (OEE) of Loaders and Rigid Frame Trucks in NAMDEB Southern Coastal Mine Stripping Fleet, Namibia
Akande,
Jide Muili,
Lawal,
Abiodun Ismail,
Aladejare,
Adeyemi Emman
Issue:
Volume 2, Issue 6, December 2013
Pages:
158-166
Published:
20 January 2013
Abstract: This research work investigates optimization of the overall equipment efficiency (OEE) of loaders and rigid frame trucks in Southern Coastal Mine Stripping fleet of Namibia. The objectives of the research were achieved through direct observation and recording in a natural setting. The collected data were duration of various cycle loss times components, loader and truck cycle times. The primary source of data is a time motion study conducted over day shifts. The secondary source is existing data from the mine. The collected data were recorded in print and transferred to corresponding digital spread sheet format in the Microsoft Excel® package for more efficient calculation and analysis. The results of the analyses revealed that OEE estimated for truck operation is 63.12% while that of loader is 24.4%. The estimated availability for truck by OEE is 60.67% while that of loader is 43.30% against the bench mark of 90%, the estimated performance for truck by OEE is 94.58% while that of loader is 59.94% against the bench mark of 90% and the estimated quality for truck by OEE is 110% while that of loader is 94% against the bench mark of 95%. From an availability perspective, queuing and bunching of trucks should be minimized.
Abstract: This research work investigates optimization of the overall equipment efficiency (OEE) of loaders and rigid frame trucks in Southern Coastal Mine Stripping fleet of Namibia. The objectives of the research were achieved through direct observation and recording in a natural setting. The collected data were duration of various cycle loss times compone...
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