Pedobiological properties of a lignite spoil heap in the Provence coal mine basin (south-east of France) ... Computational fluid dynamics simulation of Lafia–Obi bituminous coal in a fluidized-bed chamber for air- and oxy-fuel combustion technologies. Fuel, Volume 140, 2015, pp. 178-191.

The coal mines studied are Onyeama, Ogwashi, Ezimo, Inyi, Amasiodo, Okaba, Lafia-Obi, Owukpa Owukpa, Ogboyoga and Okpara. The estimated reserves of …

The proposed Lafia-Obi coal mine which is expected to provide the much needed coking coal for the Adjaokuta Steel Industry cannot be an exception to such environmental menace .The expected coal mining activities has the capacity to affect the quality of domestic water supply to the Nasarawa state capital and its environment with possible ...

The Obi/Lafia coal beds occur within the Turonian-Early Santonian Awgu Formation in the Middle Benue Trough of Nigeria. Petrographic coal analyses were carried out on 22 samples from this area to ...

Download scientific diagram | Proximate and Ultimate Analysis of Lafia-Obi coal from publication: Energy output assessment of Lafia-Obi coal in a fluidized bed combustor | Fluidization, Coal and ...

The menace of acid mine drainage: an impending challenge in the mining of Lafia-Obi coal, Nigeria. S. Mallo. Engineering, Environmental Science. 2011; Acid mine drainage (AMD) is one of the most significant environmental challenges facing the …

In this paper, Lafia-Obi bituminous coal in the. Gasification, the thermo-chemical conversion of fuels to combustible gases has assumed prominence because of its many advantages which include greenhouse gas sequestration, controllability among others. In this paper, Lafia-Obi bituminous coal in the ...

Available data show that Coal (mainly sub-bituminous steam Coals except for the Lafia-Obi bituminous Coking Coal) occurrences in Nigeria have been indicated in more than 22 Coalfields spread over 13 States of the Federation. ... Report Title: SMALL SCALE COAL MINING IN NIGERIA, THE PRE-FEASIBILITY REPORT. Report …

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Coal occurs within the Cretaceous Mamu Formation at the base of the Enugu Escarpment. Exploration. Mapping and drilling 3 core holes carried out with established depth to coal seam at 563m. Underground development undertaken with mine subsequently abandoned. Coal is bituminous; Resource Estimation. Over 128 million tonnes- inferred Data Available

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. G ...

The La®a-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 …

the coal. Direct reduction process of the coal samples were also attempted using the froth flotation process to ascertain reduction or upgrading of the coal deposit for metallurgical purposes. 2.0 Litarture review The Lafia-Obi coal deposit as it is often referred is situated between Obi and Agwatashi town about 40km

Proposal for Mine roadway (In-Seam Exploration of Lafia/Obi Coal Deposit)

Subsequent prospecting was conducted and twenty-two coal mine sites/deposits were discovered with varying reserves. Lafia/Obi coal is one of them with proven reserve of 21.42 million tonnes [3]. Lafia/Obi coal is bituminous and this grade of coal is important as fuel because it burns slowly, provides a lot of heat and is

Coal was discovered in Nigeria in 1909 and mining activities began in 1915 at Ogbete in Enugu, Southeastern Nigeria [4]. In Nigeria, coal was perhaps the first energy resource to be exploited for rail transport and electricity generation. ... In this study, Lafia–Obi coal is under CFD investigation, a bituminous coal for which experimental ...

The cost of dewatering of the Lafia- obi coal mine will absorb a substantial part of both capital and operating cost of the investment. Drawing example from the coal seams of …

materials (ASTM) standards to obtain proximate and ultimate Analysis of samples of Lafia-obi coal. They reported that data obtained from combustion Lafia-obi coal is useful in application were energy generator is critical. Seeker et al. (1981) studied the thermal decomposition of pulverized coal.The physical, thermal

Depositional environments of the then coal facies in the Obi/Lafia area based on maceral ass oions and petrographic indices (modified from Maxrhioni and KallQputh, l Kalth et al., l. Fig. 6. Comments and interpretation of the diagram are given in the next section. Petrographic facies of the Obi/Lafia area The vitrinite jusinite coal facies.

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 …

ABSTRACT. 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 energy …

Lafia-Obi coal, the only local coal with good coking properties is however laden with excessive ash and sulphur contents of about 26.3% and 2.3% respectively (Taskforce, …

country's coal mining industry to provide fuel for power generation and domestic use. According to [15], the Kogi and the Benue (Orupka, Ezimo, Lafia-Obi) district can each support a coal-fired power plant with an ultimate capacity of approximately 3,500 MW. Further report [15] showed a good probability that

For Obi-Lafia coal to be economically minable, In-seam exploration is needed to determine the feasibility of mining this coal resource; bulk sampling for pilot testing and laboratory tests/analysis to ascertain the suitability of the coal for use as feed for Ajaokuta coke ovens," he noted.

The La®a-Obi area is underlain by rhythmic sequences of shale, sandstone and limestone with varying thicknesses of interbedded coal, inferring deposition under shallow marine conditions. The ash and moisture …

Semantic Scholar extracted view of "Petrographic evaluation of the depositional environments of the Cretaceous Obi/Lafia coal deposits in the Benue trough of Nigeria" by N. Obaje et al. ... Modes of occurrence for greater sustainability of mining. Segun Ajayi Akinyemi Bemgba Bevan Nyakuma +7 authors L. Silva. Environmental …

Gasification of Lafia-Obi Coal Using ANSYS Fluent As CAD Tool and Effect of Temperature and Pressure on Producer Gas Composition. International Journal of …

Mining Of Lafia Obi Coal. COAL MINING AND THE ENVIRONMENTAL IMPACT OF. The impact of AMDs from Odagbo, Enugu and Lafiaobi coal mines in Kogi, Enugu and Nasarawa States, Nigeria respectively is reviewed in this section. A list of selected impacted areas in different continents is also presented in Table 2 Odagbo An analysis of drains …

The Lafia-Obi coal 2 has an average TOC of 35.9%, HI of 56.12HC/gTOC, OI of 30.61mgCO /gTOC and Tmax of 451oC. Combustion test 2 ... 24 Journal of Mining and Geology Vol. 56(1) 2020.