Multistage caustic leaching De-Ashing of Nigerian Lafia ...

Fractions of the high ash Nigerian Lafia-Obi coal L±250 ground to pass the 250 µm sieve in three stages were subjected to proximate/ash composition analyses, hot aqueous leaching de-ashing with ...

Analysis of clean coal technology in Nigeria for energy ...

Apr 01, 2018· 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 reserves of the ...

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 …

Data evaluation of trace elements determined in Nigerian ...

May 01, 2004· 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.

Henan Mining Machinery and Equipment Manufacturer - Froth ...

mining of lafia obi coal. Rhodium Ltd has invited prospective coal investors and energy ... CachedWashability and froth flotation tests on Lafia-Obi Coal deposit Nasarawa State North ... contact address of maruti cement factory in nepal « sale ...

Obi Lafia Coal Block • I-MINE

3,366 samples were analyzed for various parameters. Coal is classified as a medium coking type. Resource Estimation. Results of the investigation put the Obi coal deposit at a total reserve of 128.3 million tonnes. Date Available. Large-scale geological and geophysical maps. Borehole logs, cross-sections, Mine …

Ogboyega Coal Block • I-MINE

The Ogboyega coal block covers about 287,600 hectares of land. Coal crops out in the creeks at the base of the Enugu Escarpment at approx. 250 meters to 300 meters above sea level. Sandstone rich zones such as the Ajali Sandstone form small escarpments that in turn make up the larger Enugu Escarpment.

Amansiodo Coal Block • I-MINE

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

Download [PDF] The Coal Resources Of Nigeria Free ...

Author: Nigeria.Ministry of Mines and Power. Publisher: ISBN: OCLC:40680700 Category: Coal mines and mining Page: 17 View: 159 Read Now »

Assessment of Some Nigerian Coals for Metallurgical ...

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 ...

Can Nigeria Generate 30% of her Electricity from Coal by ...

Mar 10, 2014· S. J. Mallo, The menace of acid mine drainage: an impending challenge in the mining of Lafia-Obi coal, Nigeria. Continental Journal of Engineering Sciences, vol. 6, 2011, pp. 46 – 54. [46] H. Ezeigbo and B. N. Ezeanyim, Environmental pollution from coal mining activities in Enugu Area, Nigeria. International Journal of Mine Water and the ...

Okaba Coal Block • I-MINE

Coal Basin, and occupy an area of approx. 145,600 hectares. These resource estimates exclude coal that is less than 1.5m thick. These resources appear to be amenable to underground mining utilising long wall and surface contour mining along the outcrop. 274,000 ha of the deposit is unexplored to the north, south, and down dip to the west from ...

Computational fluid dynamics simulation of Lafia–Obi ...

Jan 15, 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 …

Current Approaches for Mitigating Acid Mine Drainage ...

Mar 29, 2013· 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 ...

Geology, geochemistry and biomarker evaluation of Lafia ...

Geology, geochemistry and biomarker evaluation of Lafia-Obi coal, Benue Trough, Nigeria. OLUGBENGA A EHINOLA. D. Oros. C. Ekweozor. OLUGBENGA A EHINOLA. D. Oros. C. Ekweozor. Related Papers. Aspects of organic geochemistry of Nigerian coal as a potential source-rock of petroleum. By Taofik Adedosu.

The impact of tantalite mining on the flora diversity in ...

Jan 07, 2021· Interestingly, the population of rare species increased in referred site C, Makurdi-Obi Road, Lafia LGA, compared to active mining site B located at Tunga, Awe LGA. However, E. hirta, Vigna spp., and H. suaveolens that were rarely and frequently encountered in site B were very abundant at referred site C.

Gasification of Lafia-Obi Coal using ANSYS Fluent as CAD ...

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

MINE DEWATERING: A VERITABLE COMPONENT IN MINE COST ...

MINE DEWATERING: A VERITABLE COMPONENT IN MINE COST ...

Recovery of Iron Nanoparticles from Mine Wastewater Using ...

The Menace of acid mine drainage: An impending challenge in the mining of Lafia-Obi coal, Nigeria. Continental J. Eng. Sci. 2011, 6, 2141–4068. [ Google Scholar ]

CiteSeerX — ` Printed in Nigeria THE MENACE OF ACID …

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 …

COAL MINING AND THE ENVIRONMENTAL IMPACT OF ACID …

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,

(PDF) Quality of Some Nigerian Coals as Blending Stock …

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 makes up, on average, 67.3 % ...

CiteSeerX — ` Printed in Nigeria MINE DEWATERING: A ...

lafia-obi coal nigeria mine dewatering mine development hydrologic communication adjacent stratum capital cost local surface water cost analysis remote water-bearing unit nearby rock unit underground mining activity low-pressure sink great concern mineral investment mine void …