[PDF] Chemical Characteristics of Discharges from Two ...

The menace of acid mine drainage: an impending challenge in the mining of Lafia-Obi coal, Nigeria. S. J. Mallo; Environmental Science; 2011; 13. Save. Alert. Research Feed. Acid mine drainage in an Indian high-sulfur coal mining area: Cytotoxicity assay and remediation study.

Mineralogy and Geochemistry of Sub-Bituminous Coal and …

2012-11-7 · The volatile matter of the pulverised coal sample used in this study is considerable lower than the American coal (31.36 %), Polish coal (32.61 %), Lafia-Obi (29.37 %) and Chikila (44.27 %) [66, 62]. Volatile matter, apart from its use …

Physical and Plastic Properties of Three Nigerian Coals

Lafia-Obi coal has the lowest volatile matter of 22.25%, followed by Onyeama Sample with values of 34.97% and Garin Maiganga (Gombe) with 37.05% while percentage volatile matter for semi-cokes are 3.71% for Onyeama, 2.42% for …

WASHABILITY AND FROTH FLOTATION TESTS OF LAFIA …

2013-5-28 · 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, 1987). 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).

THE MENACE OF ACID MINE DRAINAGE: AN IMPENDING ...

2021-12-7 · Coal bearing beds (seams) within the Lower and Upper Coal Measures of the Agwu Formation. 20 Coal seams occur within the Lower Coal Measure while 16 are in the Upper Coal Measure. The deposit occurs within the Giza anticline and partly within the Obi syncline. Exploration. A geological and geophysical survey carried out (1:10,000).

ENERGY OUTPUT ASSESSMENT OF LAFIA-OBI COAL IN A …

ENERGY OUTPUT ASSESSMENT OF LAFIA-OBI COAL IN A FLUIDIZED BED COMBUSTOR E. O Ilyas, et al Nigerian Journal of Technology Vol. 37, No. 4, October, 2018 968 Figure 1: Electricity demand projection in Nigeria (Sambo, 2008) Therefore, its value must be monitored and maintained

Physical and Plastic Properties of Three Nigerian Coals

Results obtained revealed that the moisture content of Onyeama, Lafia-Obi and Garin Maiganga coal are 3.03, 2.93 and 6.35%, respectively with corresponding ash content of the semi-coke as 25.10, 28.54 and 42.01% in that order. x-ray fluorescence revealed high mineral matter content with highest concentration of copper and lead (10400 and 32500 ...

Amansiodo Coal Block • I-MINE

2021-10-14 · 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

About Nasarawa State – Official Website of Nasarawa State

The Lafia-Obi coal which is of high-medium volatile bituminous rank with estimated reserves of 128.3million tonnes could be used to establish small sized modular coal-fired Independent Power Plants (IPPs) for the generation of electricity in the state.

Current Approaches for Mitigating Acid Mine Drainage ...

2013-3-29 · Mallo SJ (2011) The menace of acid mine drainage: an impending challenge in the mining of Lafia-obi coal, Nigeria. Continental J Eng Sci 6:46–54 Google Scholar Martin J, Fyfe J (2011) Innovative closure concepts for xstrata nickel onaping operations, presentation in Sudbury 2011, mining and the environment international conference V, 25–30 ...

Nasarawa to Generate 1,000MW Electricity from Coal …

2019-8-12 · Igbawase Ukumba in Lafia. The Nasarawa State Governor, Abdullahi Sule, has announced that his administration is on the verge of finalizing arrangements with the General Electric (GE) to utilize ...

Characterization of Some Nigerian Coals for Power …

Five coal samples from Odagbo (Kogi State), Owukpa (Benue State), Ezimo (Enugu State), Amansiodo (Enugu State), and Inyi (Enugu State) of Nigerian coal deposits were subjected to proximate analysis, ultimate analysis, calorific value determination, and petrographic and thermogravimetric analysis to determine their suitability for power generation.

A REVIEW OF TECHNICAL POTENTIAL FOR COAL …

within the known coal areas at Enugu, Ezinmo, Owukpa, Okabba, and Oggboyega and later in the seventies at Lafia-obi. Udi mine, located at the foot of a range of Enugu hills, was the scene of the first ever Nigerian mining activity in 1906. Thereafter Oghete, Iveallal and Asaba in that order were worked and exhausted between 1917 and 1967.

Nigeria

2021-12-17 · Substantial coal reserves of varying quality can be found in south-central states in a band that stretches from Benin to Cameroon. Deposits discovered more recently in the southwestern part of the country at Lafia-Obi …

(PDF) The Nigerian Coal Corporation: An Evaluation Of ...

The coal measures (Fig. 2) are concentrated within the Anambra Basin, but also occur in other rocks within Nigeria such as Lafia-Obi in Plateau state, Lamja, Gombe in Bauchi state and Afikpo in ...

Assessment of Some Nigerian Coals for Metallurgical ...

2013-12-24 · profile for Lafia-Obi coal, indicating that the coal has a good coking potential. A good . Vol.7, No.4 Assessment of Some Nigerian Coals 305 metallurgical coal usually possesses a Gray-king profile between G1 to G9. Doho and Lamja coals have Gray-king type A and B profiles respectively which suggest that they are of poor ...

INVESTIGATION: Despite 36 mining licences, 10,000MW …

2019-12-24 · While the former has a permit for coal, lead and zinc in Obi and Lafia, the later has a Small-scale Mining (SM) licence for coal in Lafia. A survey across their sites in the state showed nothing significant in mining activities. Further checks indicated that the coal licenses held by both firms were for the purpose of generating energy and ...

NIGERIA COAL FEASIBILITY REPORT 031506

2019-7-19 · Mailing and Delivery Address: 1000 Wilson Boulevard, Suite 1600, Arlington, VA 22209-3901 Phone: 703–875–4357 • Fax: 703–875–4009 • Web site: • email: [email protected] FEASIBILITY STUDY NIGERIAN COAL RESOURCE DEVELOPMENT Prepared for: Ministry of Solid Minerals Development Federal Republic of Nigeria

Petrographic evaluation of the depositional environments ...

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 beds at the bottom of the stratigraphical sequence, termed the vitrinite-fusinite coal facies, are rich in vitrinite, poor in ...

(PDF) Quality of Some Nigerian Coals as Blending Stock in ...

Based on the maceral composition, three types of coal facies have been identified in the Obi/Lafia area: 1 .A vitrinite-dominated coal facies, in which vitrinite …

Gasification of Lafia-Obi Coal using ANSYS Fluent as …

2018-5-18 · 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

Data evaluation of trace elements determined in Nigerian ...

High segregation of coal fly ash was observed, while metallurgical coal grouped together with high-ranking coals of Okaba, Enugu and Obi (Lafia). Further work revealed some of these coals as having high gross calorific value (7908 kcal kg(-1) for Enugu coal; 7200 kcal kg(-1) for Okaba) and low sulphur thereby making them efficient fuel materials.

Production and Characterization of Carbon Molecular …

2019-2-7 · Energy Council 8 puts Nigeria''s total proven coal reserves at 344 million tons, most of which fall within the rank of bitumi-nous or sub-bituminous. Of the total Nigerian coal deposits, the Lafia-Obi basin has an estimated 21 million tons of bituminous coal reserves.9 This makes it an attractive economically viable

Geology, geochemistry and biomarker evaluation of Lafia ...

2002-1-1 · However, there are few published papers on the Lafia-Obi coal. Obaje and Obaje et al. described the petrographic and depositional environments of the coal bearing strata of the Awgu Formation, and also subdivided the coal beds and interseam sediments into three different coal facies, namely: (a) vitrinite–fusinite, (b) trimaceritic and (c) shaly coal facies, respectively.

(PDF) The Nigerian Coal Corporation: An Evaluation Of ...

 · The coal measures (Fig. 2) are concentrated within the Anambra Basin, but also occur in other rocks within Nigeria such as Lafia-Obi in Plateau state, …

Assessment of Some Nigerian Coals for Metallurgical ...

In the quest for a search of a suitable coal deposit of metallurgical importance, the qualities of three Nigerian coal samples, Lafia-Obi, Doho and Lamja, were assessed for possible utilization in metallurgical coke production. Several parameters that determine coking quality, such as moisture content, ash, volatile matter, free swelling index, sulphur content, Gray-King coke test, …

NIGERIAN CRETACEOUS COAL DEPOSITS AND THEIR …

2020-2-10 · ABSTRACT: Some Nigerian Cretaceous coal deposits have been mapped and characterized for their petroleum source rock potential based on Rock Eval pyrolysis. These coal deposits which occur entirely within the Anambra Basin/Benue Trough have been mapped at Owukpa, Okaba, Ogboyaga, Omelehu, Lafia-Obi and at Gombe-Kumo.

Emission and Combustion Characteristics of Lafia-Obi Coal ...

The technology of fluidized bed coal combustion (FBC) and its advantages over conventional coal burning systems is now well established and is extensively reported in the literature. There is also some emphasis in literature about the suitability of Lafia-Obi coal in FBC. However, there is little quantitative or qualitative information on theperformance of Lafia-Obi in FBC.

Quality of Some Nigerian Coals as Blending Stock in ...

2013-12-24 · coal samples. The volatile matter of Lafia-Obi coal is close to that of the foreign coals; while a large difference exists between Chikila coal and the foreign ones. It was observed elsewhere that the Lafia-Obi coal is higher in maturity than the Chikila coal [17] and volatile matter is known to decrease with increase in rank [18,19].

Gasification of Lafia-Obi Coal Using ANSYS Fluent As …

2018-12-20 · 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

Potential heavy metal pollution of soil and water ...

2019-4-1 · The Menace of acid mine drainage: an impending challenge in the mining of Lafia-Obi coal, Nigeria Cont. J. Eng. Sci., 6 ( 3 ) ( 2011 ), pp. 2141 - 4068 Google Scholar

COAL MINING AND THE ENVIRONMENTAL IMPACT OF …

2021-6-29 · The impact of AMDs from Odagbo, Enugu and Lafia-obi 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) 3.1 Odagbo An analysis of drains from Odagbo coal mine was conducted. The levels of lead, nickel, cobalt,

Lafia-Obi Coal In A Fluidized Bed Combustion Chamber ...

The calorific value of the coal was determined using a bomb calorimeter, after which the coal was combusted in a fluidized bed. The results showed that Lafia …

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