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mining of lafia obi coal

Obi Lafia Coal Block - i-MINE

The deposit occurs within the Giza anticline and partly within the Obi syncline. Exploration: Geological and geophysical survey carried out (1:10,000). 138 core-holes were drilled ranging from 80m and 520m depth. 2 shafts were sunk to depths of 28m and 32m. Over 36,000m of drill core were sampled and studied. 36 coal seams were identified.

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mining of lafia obi coal – Grinding Mill China

Technology Policy and Practice in Africa: Biographical Notes,Concomitantly, the sole enterprise responsible for coal mining in Nigeria, the .. Coking coals, found in the Lafia–Obi coal field, are high in sulfur and have to be » Learn More. Ministry of Mines and Steel Development 1 - Mine ,Coal – Estimated Reserves of over 2.7 billion tonnes. 2.

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WASHABILITY AND FROTH FLOTATION TESTS OF LAFIA-OBI COAL

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 Onumayi, 2007).

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Computational fluid dynamics simulation of

15-01-2015  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 reactor for air- and oxy-fuel combustion. The coal was taken from the Lafia–Obi site in the MBT of Nigeria; the coal particle sizes varied from 10 mm to 25 mm.

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Selective oil agglomeration of Lafia coal, Nigeria ...

However, testing has shown that Lafia coal can he upgraded by selective oil agglomeration. The optimum oil concentration was found to be 10 mL of paraffin per 25 g of coal. A product containing 6% ash and 1.9% sulfur was obtained with a yield of 90%.

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Emission and Combustion Characteristics of Lafia

Results showed that Lafia-Obi coal has low moisture, high volatile matter and very high fixed carbon content. The volatile matter content places Lafia-Obi in the medium volatile bituminous rank. The data obtained is useful in application of fluidized bed combustion for energy production using Lafia-Obi Coal

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Lafia-Obi Coal Scientific.Net

Journal of Biomimetics, Biomaterials and Biomedical Engineering Materials Science. Defect and Diffusion Forum

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Analysis of clean coal technology in Nigeria for

01-04-2018  Some of the notable coal mines in the Lower Trough include Onyeama and Okaba and Lafia-Obi for the Middle Trough. All in all, there are about 23 coal mines in Nigeria [ 1 ], some of which are currently not in operation [ 4 ]. Previously, coal was mainly used to power trains and also for electricity generation [ 5 ].

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Nigerian Coal Corporation - Bureau of Public

Under the product sharing joint venture arrangement, the Nigerian coal corporation shall sign an agreement with a private company which is to under take at its risk and cost, general surveys, exploration and feasibility studies, where these have not been done already by the corporation, for the exploitation of the coal potentials within a delineated area of the country’s coal reserves for an agreed term under a coal mining

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Methylobacterium sp. Obi Semantic Scholar

09-02-2021  The menace of acid mine drainage: an impending challenge in the mining of Lafia-Obi coal, Nigeria. S. J. Mallo; 2011; Corpus ID: 14235203. Acid mine drainage (AMD) is one of the most significant environmental challenges facing the mining industry worldwide.

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INVESTIGATION: Despite 36 mining licences,

Nasarawa: No coal mining despite 2 licences Two companies, Tongyi Global Solid Minerals Resources Limited and Sansani Farms Limited, got license to extract coal in Nasarawa State. 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.

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Appraisal of the Economic Geology of Nigerian Coal Resources

the Agency. The Obi camp is about 32km southeast of the town of Lafia in Nasarawa State. 3.0 Coal Formation The Nigerian coal sequence represents a two phase system, with partial repletion of the coal sequence. The series begins with the typical transgressive period connected with a slight subsidence, whereby a broad shallow sea was formed.

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Emission and Combustion Characteristics of

Results showed that Lafia-Obi coal has low moisture, high volatile matter and very high fixed carbon content. The volatile matter content places Lafia-Obi in the medium volatile bituminous rank. The data obtained is useful in application of fluidized bed combustion for energy production using Lafia-Obi Coal

More

Nigerian Coal Corporation - Bureau of Public

Under the product sharing joint venture arrangement, the Nigerian coal corporation shall sign an agreement with a private company which is to under take at its risk and cost, general surveys, exploration and feasibility studies, where these have not been done already by the corporation, for the exploitation of the coal potentials within a delineated area of the country’s coal reserves for an agreed term under a coal mining

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Petrographic evaluation of the depositional

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.

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(PDF) The Nigerian Coal Corporation: An

coal was discovered in nigeria in 1909 and coal mining started with a drift mine at ogbete, enugu in 1915.

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Lafia-Obi Coal In A Fluidized Bed Combustion

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-Obi coal had 2.91wt % moisture, 27.19 % volatile matter, 18.62 wt % ash and 51.28 wt % fixed carbon content. The volatile matter content, placed Lafia-Obi in the medium-volatile bituminous rank.

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Lafia-Obi Coal In A Fluidized Bed Combustion

Lafia-Obi Coal In A Fluidized Bed Combustion Chamber by O.T. Popoola, A. A. Asere. Click here for the lowest price! Paperback, 9783659775352, 3659775355

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Data evaluation of trace elements determined in

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.

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Methylobacterium sp. Obi Semantic Scholar

09-02-2021  The menace of acid mine drainage: an impending challenge in the mining of Lafia-Obi coal, Nigeria. S. J. Mallo; 2011; Corpus ID: 14235203. Acid mine drainage (AMD) is one of the most significant environmental challenges facing the mining industry worldwide.

More

INVESTIGATION: Despite 36 mining licences,

Nasarawa: No coal mining despite 2 licences Two companies, Tongyi Global Solid Minerals Resources Limited and Sansani Farms Limited, got license to extract coal in Nasarawa State. 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.

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Nigeria: Investigation - Despite 36 Mining

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 ...

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DataCite Search

Mine Dewatering: A Veritable Component In Mine Cost Analysis In The Development And Mining Of The Lafia-Obi Coal, Nigeria Stephen J. Mallo Journal Article published 2011 via Zenodo

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Emission and Combustion Characteristics of

Results showed that Lafia-Obi coal has low moisture, high volatile matter and very high fixed carbon content. The volatile matter content places Lafia-Obi in the medium volatile bituminous rank. The data obtained is useful in application of fluidized bed combustion for energy production using Lafia-Obi Coal

More

Lafia-Obi Coal In A Fluidized Bed Combustion

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-Obi coal had 2.91wt % moisture, 27.19 % volatile matter, 18.62 wt % ash and 51.28 wt % fixed carbon content. The volatile matter content, placed Lafia-Obi in the medium-volatile bituminous rank.

More

Petrographic evaluation of the depositional

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.

More

Physical and Plastic Properties of Three

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 ppm) for Onyeama, iron and silicon (40830 and 48500 ppm) for Lafia-Obi

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Data evaluation of trace elements determined in

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.

More

Methylobacterium sp. Obi Semantic Scholar

09-02-2021  The menace of acid mine drainage: an impending challenge in the mining of Lafia-Obi coal, Nigeria. S. J. Mallo; 2011; Corpus ID: 14235203. Acid mine drainage (AMD) is one of the most significant environmental challenges facing the mining industry worldwide.

More

10.1016/S0016-2361(01)00122-3 DeepDyve

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. However, there are few published papers on the Lafia-Obi coal.

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nmgs-journal.org

coal, namely, the humic and the sapropelic types (Table 1), The third unidentified type include the shaly coal or the coaly shAle (Table 1). This paper examines the major coal fields of Nigeria which include Enugu, Ezimo, Okaba, Orukpa, Ogboyoga Lafia Obi and Afikpo, with a view to their qualities , reserve estimates and costs among others.

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Petrographic evaluation of the depositional

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.

More

A Bibliography of Geological Studies on the Benue Trough ...

Lafia-Ori coals of the Benue Trough. Journal of Mining and Geology 44(1): 37-43. 44. Jauro A, Obaje NG, Agho MO, Abubakar MB, Tukur A (2007) Organic geochemistry of Cretaceous Lamza and Chikila coals, upper Benue trough, Nigeria. Fuel 86(4): 520-532. 45. Jolly BA, Zaborski PM, Anyiam OA, Nzekwe EI (2015) Field study of the

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Physical and Plastic Properties of Three

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 ppm) for Onyeama, iron and silicon (40830 and 48500 ppm) for Lafia-Obi

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PETROGRAPHIC COMPOSITION AND

DEPOSITIONAL SUBENVIRONMENTS OF THE PETROGRAPHIC FACIES OF THE OBI/LAFIA COALS. (THE VITRINITE-FUSINITE COAL FACIES) High to medium TPI indices (average TPI=1.64) which is relatively high compared to Diessel 1992 Gelification indices (average=5.99) Interbedded inorganic sediment comprises black carbonaceous shale and dark grey limestones.

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Assessment of Some Nigerian Coals for

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, ...

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Lafia-Obi Coal In A Fluidized Bed Combustion

Lafia-Obi Coal In A Fluidized Bed Combustion Chamber by O.T. Popoola, A. A. Asere. Click here for the lowest price! Paperback, 9783659775352, 3659775355

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Lafia - Wikipedia

Lafia is a town in North Central Nigeria. It is the capital city of Nasarawa State and has a population of 330,712 inhabitants according to the 2006 census results. It is the largest town in Nasarawa state. History. Lafia, also known as Lafian Beri-Beri, is the capital ...

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