improvements in the crucible swelling numbers of Lafia-Obi coal fractions following hot caustic leaching de-mineralization. MATERIALS AND METHODS Materials The Lafia-Obi sample was obtained from a site of Lafia-Obi coal-field on the bank of Kogi River, in Shankodi Jangwa district of Awe Local

Abstract. Washability and froth flotation tests on Lafia-Obi Coal deposit Nasarawa State North-Central Nigeria were carried out on samples of the coal deposit obtained from seams 30, 13 and 12 after size reduction using hammer and jaw crush respectively.

Governor, Abdullahi Sule who announced this in Obi at the flagging off of the construction of a 2 kilometer solar powered streetlights in Obi and Nasarawa Eggon Local Government Areas disclosed that his administration has finalised arrangements with a private electricity firm, General Electric (GE), to generate 1000 megawatts from coal deposits ...

Aug 12, 2019· 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 the coal reserves in Obi Local Government Area of …

Based on the maceral compositions and the Rock-Eval pyrolysis results, the Lafia-Obi coals are within gas generating interval and could be a source rock in this area. The Lafia-Obi coal can be of utility for the iron and steel industries if blended with high rank coal for combustion.

Geology, Geochemistry and Biomarker Evaluation of the Lafia-Obi coal, Benue Trough, Nigeria. FUEL » Learn More. Physical and Plastic Properties of Three Nigerian Coals -,Collection and preparation of materials: Lafia-Obi and Onyeama coal samples . Lafia-Obi-belt however, is a good pointer to the numerous mining activities » Learn More

The present global concern for new sources of energy has kindled a renewed interest in coal. In the option for maximizing the use of low grade coals in the production of metallurgical grade coke and various coal conversion processes, the qualities of three Nigerian coal samples, Onyeama, Garin Maiganga and Lafia-Obi, were assessed for their potential utilization in a blast furnace.

Aug 12, 2019· Igbawase Ukumba in Lafia. ... "The power generation project will not just provide services to the people of Obi, it will also create a coal mine that will generate employment as well as other ...

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 …

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

NIGERIA'S COUNTRY REPORT ON COAL MINE METHANE RECOVERY AND USE. 1.0 INTRODUCTION ... Comparison Of Typical And Prime Coking Coal Analysis With Lafia-Obi Raw And Washed Coals Quality Parameter Typical Coking Coal Prime Coking Coal/Blend ... indicates some of the existing coal mine sites in Nigeria. Perhaps

Many a mining environment especially coal mining areas have suffered degradation as a result of acid mine drainage. 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 ...

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 …

Canada coal and Lafia-Obi coal as-leached showed that inclusion of 16.63% of the latter was probable and this translates to reduction in cost per ton of about $23.67. A successful upgrade of the leaching route derived to industrial scale will make Lafia-Obi coal available as a …

Computational fluid dynamics simulation of Lafia–Obi bituminous coal in a fluidized-bed chamber for air- and oxy-fuel combustion technologies Article in Fuel 140:178–191 · January 2015 with ...

Acid mine drainage (AMD) is one of the most significant environmental challenges facing the mining industry worldwide. It occurs as a result of natural oxidation of sulphide minerals contained in mining wastes at developmental, operating and closed/decommissioned mine sites. This contamination occurs when moving fresh surface water interacts with the rock through fissures, pores and faults, and...

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 ...

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].

Department of Geology and Mining, Nawarawa State University, Keffi, Nigeria. E-mail: [email protected]* ABSTRACT Paralic coal beds are found as interbeds within the Cretaceous system around Lafia/Obi area of Nasarawa State which geologically fall into the Middle Benue Trough of North Central Nigeria.

CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): 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 render mining of minerals ineffective. Surface and underground mines must therefore constantly be dewatered in order to forestall over ...

The " Hajvalia " mine is flooded after the war of the year 1999. The technical and engineering team of the mine has no access in the mine, primarily in the mine's productivity levels. In order to get mine access it is needed dewatering

mining of lafia obi coal; Welcome to Shanghai Mining and Construction Machinery Co,Ltd is one of the biggest manufacture in crushing and grinding . Chat Online; 46-54 - CiteSeerX. the menace of acid mine drainage: an impending challenge in the mining of lafia-obi coal, nigeria stephen j mallo, 46 - 54, 2011 lafia obi)3, 1 + +3 + + + 54 . Chat ...

ENERGY OUTPUT ASSESSMENT OF LAFIA-OBI COAL IN A … This work investigated the energy output from the fluidized bed combustion of Lafia-Obi coal using five range of fuel equivalent diameters (FED) of 125 µm, 250 µm, 355 µm, 2.5 mm and 5.0 mm. Energy output in response to variation in bed temperature, FED, bed pressure, and fluidizing velocity was examined in the fluidized bed heat …

Request PDF on ResearchGate | Multistage caustic leaching De-Ashing of Nigerian Lafia-Obi Coal | Fractions of the high ash Nigerian Lafia-Obi coal L±250 ground to pass the 250 µm sieve in three ...

Jan 01, 2002· Read "Geology, geochemistry and biomarker evaluation of Lafia-Obi coal, Benue Trough, Nigeria, Fuel" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

Tin and columbite are mined nearby, and there is a deposit of coal southeast of the town. The majority of Lafia people are Muslims-about 70 percent. Lafia has a central mosque which is close to the Emir's Palace. Has a lot of hospitals of which the Dalhatu Araf Specialist Hospital is the most significant.

Many a mining environment especially coal mining areas have suffered degradation as a result of acid mine drainage. 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 ...

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).

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 25 mm.

Metals concentrations in both Lafia-Obi and Chikila coal samples are within the limits allowed by the Federal Environmental Protection Agency (FEPA) except in Chikila (UBCJ-1) and Lafia-Obi (MBJJ-6) coal samples where iron was observed to be higher than the stipulated 20 ppm.

Linus Oota, Lafia Nasarawa State Governor Abdullahi Sule says his administration is finalizing arrangement with General Electric towards generating 1000 megawatts from coal reserves in Obi local ...

Geology of Lafia-Obi Coal The geological investigation of the Lafia-Obi coal fields carried out by the Exploration and Mining Division of the National Steel Council, Kaduna between 1973 to 1979 established a commercial reserve of 128,304,000 tons of coal [NSC 1978 ].