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mining of lafia obi coal
Computational fluid dynamics simulation of Lafia–Obi bituminous coal
In this research study, computational fluid dynamics (CFD) is applied to simulate air–coal and oxy-coal flow, combustion, and emission characteristics in a The Jangwa-Shankodi and Lafia-Obi coal zones are high volatile C bituminous coal resources with ash, moisture, fixed carbon and volatile matter yield that Influence of depositional environment on coal quality in
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Computational fluid dynamics simulation of Lafia–Obi bituminous coal
The objective of the present study is to numerically study the process of the heterogeneous combustion of the Nigerian Lafia–Obi coal particles in a fluidized-bed The highest inertinite content is recorded in the Garin-Maiganga coal (53.68%), followed by the Lafia-Obi coal, and minor quantities occur in other coal Petrology, physicochemical and thermal analyses of selected
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(PDF) Determination of selected metals in coal
The Obi/Lafia coal beds occur within the Turonian-Early Santonian Awgu Formation in the Middle Benue Trough of Nigeria. Nigerian Journal of Mining and Geology, 44: 11-19. Kim,A. GCoal Characterization of Organic Matter from Bituminous Coals of Lafia-Obi, Middle Benue Trough, Nigeria Authors: Mmaduabuchi Uche Uzoegbu Michael Characterization of Organic Matter from Bituminous Coals of Lafia-Obi
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The Combustion Profiles of the Lafia- Obi Coals:
This paper aims to understand the combustion profiles of the coal samples in the Lafia-Obi axis, Middle Benue Trough (MBT), for consideration as a potential map of the Lafia Obi coal area to provide the required surface water run-off map. The information generated has been used to corroborate available lean geological and hydro-geological data on the Obi coal. INTRODUCTION Acid mine drainage (AMD) is the flow, or seepage, of polluted water from old mining areas which dependingVol 6 3 Cont. J. Eng. Sci Zenodo
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WASHABILITY AND FROTH FLOTATION TESTS OF LAFIA
The Lafia-Obi coal deposit has been found to be geologically faulty and the minimum estimated cost of mining it per ton was at N87.50 as at 1977 (Taskforce, 1987). Considering the present exchange rate of the Nigeria Naira to the US dollar, the current mining price per ton of Lafia-Obi coal can be taken to be US$87.50 (Adeleke and The Lafia-Obi coal is found within the Awgu Formation of the Turonian–Santonian depositional cycle (Fig. 2), and has a proven coal reserve of over 22 million tons [3]. The coal deposit occurs as numerous seams in a belt, which runs through Obi-Hobol and Akulungu-Akpum. Paper presented at the 24th Annual Conference of Geology, geochemistry and biomarker evaluation of Lafia-Obi coal
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Geology, geochemistry and biomarker evaluation of Lafia-Obi coal
The Lafia-Obi coal is found within the Awgu Formation of the Turonian–Santonian depositional cycle (Fig. 2), and has a proven coal reserve of over 22 million tons [3]. Organic geochemistry and coal petrology of Tertiary brown coal in the Zhoujing mine, Baise Basin, South China -4. Biomarker sources inferred from stable The coal has a calorific value that ranges between 20,000 and 35,600 kJ/kg −1, suggesting optimal suitability for combustion. The coal deposits of Lafia–Obi are geologically the oldest so far discovered in Nigeria and found in the MBT. It is perhaps the only coal in Nigeria with good coking properties.Computational fluid dynamics simulation of Lafia–Obi bituminous coal
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The Combustion Profiles of the Lafia- Obi Coals:
A total of nine (9) grab coal samples were obtained from 3 coal localities in the Lafia-Obi environment, the proximate analysis was conducted on the coal samples using a Perkin ElmerCoal samples from Lafia–Obi and Onyeama (Enugu) were obtained from the National Metallurgical Development Cenre (NMDC), Jos, while sample from Garin Maiganga (Gombe) was collected from the minePRODUCTION OF FORMED COKE FROM NIGERIAN
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Analysis of clean coal technology in Nigeria for energy
An analysis of clean coal technologies for the recovery of energy from Nigerian coals was carried out. The coal mines studied are Onyeama, Ogwashi, Ezimo, Inyi, Amasiodo, Okaba, Lafia-Obi, Owukpa Owukpa, Ogboyoga and Okpara. The estimated reserves of the ten coal deposit amount to 2.1 Gt, which is about 84% of the total coal [20] also reported that coal in the Central Benue Trough (Turonian-Coniacian Lafia-Obi coal) has low moisture content, low volatiles, high calorific value (7500 -8500 kcal/kg) and thereforeAppraisal of the economic geology of Nigerian coal resources
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Characterization of Organic Matter from Bituminous Coals of Lafia-Obi
The homohopane index (C35/C31 C35) and homohopane ratio (C35αβS/C34αβS) range from 0.02 to 0.12 and 0.15 to 0.92 indicates oxic condition during organic matter deposition from Lafia-Obi samples.The Lafia-Obi coal deposit has been found to be geologically faulty and the minimum estimated cost of mining it per ton was at N87.50 as at 1977 (Taskforce, 1987). Considering the present exchange rate of the Nigeria Naira to the US dollar, the current mining price per ton of Lafia-Obi coal can be taken to be US$87.50 (Adeleke and WASHABILITY AND FROTH FLOTATION TESTS OF LAFIA
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Solid Mineral Resources SpringerLink
Gold mining reached its peak in the period 1935–1941 but since 1950 has been generally limited to very small scale alluvial workings. In recent years the defunt Nigerian Mining Corporation did some An analysis of clean coal technologies for the recovery of energy from Nigerian coals was carried out. The coal mines studied are Onyeama, Ogwashi, Ezimo, Inyi, Amasiodo, Okaba, Lafia-Obi, Owukpa Owukpa, Ogboyoga and Okpara. The estimated reserves of the ten coal deposit amount to 2.1 Gt, which is about 84% of the total coal Analysis of clean coal technology in Nigeria for energy
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(PDF) Production of formed coke from Nigerian coals
The minimum fluidisation velocity was obtained to be 1.64 and 1.91 m/s for a coal batch feed of 150 and 450 g, respectively. Jauro and Chukwu [9] investigated three Nigerian coals (Onyeama, LafiaIn this research study, computational fluid dynamics (CFD) is applied to simulate air–coal and oxy-coal flow, combustion, and emission characteristics in a fluidized-bed combustion chamber. This work investigates Lafia–Obi coal, which is found in the Middle Benue Trough (MBT) of Nigeria. As far as the authors are aware, this researchCoal in Nigeria ScienceDirect
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(PDF) PRODUCTION AND CHARACTERIZATION OF
The product characteristics were well comparable. In this work, a carbon molecular sieve (CMS) was produced from a bituminous Lafia-Obi Nasarawa coal. An initial activated carbon (AC) sample wasDEVELOPMENT AND MINING OF THE LAFIA-OBI COAL, NIGERIA Stephen J. Mallo Dept. of Geology and Mining University of Jos, Nigeria ABSTRACT The impact of water in surface and underground mining activities is of great concern to Mining Engineers and Geoscientists to the effect that its accumulation in excess quantity can View metadata, citation and similar papers at core.ac.uk
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Petrographic evaluation of the depositional environments of
Paralic coal beds occur intercalated within the Cretaceous systems in the area around Obi/Lafia of the middle Benue trough of Nigeria. The petrographic compositions of the coal beds indicate three ptrographic facies with different depositional environments.The coal mines studied are Onyeama, Ogwashi, Ezimo, Inyi, Amasiodo, Okaba, Lafia-Obi, Owukpa Owukpa, Ogboyoga and Okpara. The estimated reserves of the ten coal deposit amount to 2.1 Gt, which is about 84 % of the total coal reserves of the country 2.5 Gt of coal Nigeria. The key clean coal technologies studied are Ultra Analysis of clean coal technology in Nigeria for energy
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