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Coal is also used as a power source for factories. There it is used to heat steam, and the steam is used to drive mechanical devices. A few decades ago most coal was used for space heating. Some coal is still used that way, but other fuels and coal-produced electricity are now used instead. Coke production remains an important use of coal.
Maiganga coal however has the highest heating value of 27.40 MJ/kg when compared to Okaba coal (25.74 MJ/kg) and Enugu coal (22.92 MJ/kg). The silica ratio indicated that Enugu coal has high slag volume, while the B/A suggest that all the coals were found to .
JM Akande & EA Aladejare (2013). Geo-mechanical Properties of Okaba Coal Deposit for Pillar Design. Journal of Mining World ... (2012). Investigating the Physical and Chemical Properties of Oreke Dolomite Deposit to be used as Refractory Ware. Nigeria Mining Journal 10(1). 29-36. Akande, J. M. & Aladejare, A. E. (2012). Design of Okaba ...
This paper investigated the Geo-mechanical properties of Okaba Coal deposit for pillar support system in an underground mine, in which the unit weight of sandstone being the roof rock is 2 450 kg ...
Interpretive Properties. o Relative Erodibility: Susceptibility to erosion in terms of sediment yield per unit area. o Excavation Difficulty: The relative difficulty of excavation by heavy equipment. o Moisture Sensitivity: Susceptibility to significant changes in physical properties due to changes in water content. In general, sensitivity ...
the mechanical properties of the gas hydrate deposit, from the experimental and numerical aspects. Also, thispaper points out that research on the mechanical properties of synthesized gas hydrate porous media (coalbed seam) is necessary for coal and gas outburst prevention and mitigation. First, the theories about strength and deformation are
Mining Of Lafia Obi Coal. Coal Mining In Plateau State Nigeria. The coal measures 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 imo state.The oyeama mine and okpara mine are in anambra state while the owupka and okaba coal mines are in benue state ezekwe odukwe, 1980 godwin ...
characteristics of the coal, and the physical and mechanical properties of the coal-bearing rocks, both in the area of the basin and with the depth of the coal seams. In connection with this, the requirements for studying the composition and physical and mechanical properties of carbon-bearing rocks are increasing. From
Production of indigenous okaba coal briquettes: physical and combustion properties. International Journal of recent scientific research, 5(10), 1883-1886. PROXIMATE AND ELEMENTAL ANALYSIS OF .
[10] Akande JM, Onifade M and Aladejare EA, Determination of Airflow Distributions in Okaba Underground Coal Mine, Journal of Mining World Express, USA, Vol. 2, Issue 2, pages 40 – 44, 2013. [11] Akande JM and Aladejare EA, Geo-mechanical Properties of Okaba Coal Deposit for Pillar Design, Journal of Mining World Express, USA, Vol. 2, Issue 2, pages 45 - 48, 2013.
Geo-mechanical properties of Okaba coal deposit for pillar support system. Journal of Mining World Express, 2(2), 45-48. Akande, JM, Onifade, M, and Aladejare, AE (2013). Determination of airflow distributions in Okaba underground coal mine. Journal of Mining World Express, 2(2), 40-44. Adebayo, B, and Aladejare, AE (2012). Effect of rock ...
The present study examined the microstructure and mechanical properties of ceramic composites based on a kaolin from Djebel Debbagh, northeast Algeria, composed mainly of kaolinite and halloysite with the addition of various amounts of BaCO 3.The composites were prepared by high-energy ball milling and sintered at 1100°C and 1200°C for 3 h.
ABSTRACT This study is a comparative analysis of the use of coal, fuel oil and natural gas for cement production noting their physical and chemical properties, cost and availability, impact on the environment and human health. Out of the seven cement manufacturing industries in .
To blend two coal samples and perform physical, chemical and thermal analysis on the blend obtained. 1.4 Aim and Objectives. The aim of this research is to blend and characterizes coal obtained from two coal mines in Nigeria. This aim will be achieved through the following objectives; i. Performing TGA on individual samples. ii. Blending of the ...
Geo-mechanical Properties of Okaba Coal Deposit for Pillar Design. Journal of Mining World Express 2(2). 45-48. JM Akande & M Onifade (2013). Modelling of Okaba Underground Coal Mine Ventilation System. ... (2012). Investigating the Physical and Chemical Properties of Oreke Dolomite Deposit to be used as Refractory Ware. Nigeria Mining Journal ...
fine coal refuse (FCR) slurry, a mixture of soil, rock dust, coal fines and water that is pumped into such an impoundment. The physical, mechanical, and hydraulic conductivity properties of CCR and FCR are critical in designing coal refuse disposal dams and impoundments for both .
To blend two coal samples and perform physical, chemical and thermal analysis on the blend obtained. 1.4 Aim and Objectives. The aim of this research is to blend and characterizes coal obtained from two coal mines in Nigeria. This aim will be achieved through the following objectives; i. Performing TGA on individual samples. ii. Blending of the ...
Rock - Rock - Physical properties: Physical properties of rocks are of interest and utility in many fields of work, including geology, petrophysics, geophysics, materials science, geochemistry, and geotechnical engineering. The scale of investigation ranges from the molecular and crystalline up to terrestrial studies of the Earth and other planetary bodies.
Dec 01, 2019· This paper conclude that the Halaib granite physical properties have an advantage of low porosity (0.42), good abrasion resistance (0.11) and low soluble matter (0.25), also it have a very good mechanical resistance properties 1358 kg/cm 2 in comparison to Aswan and Sinai granite which gives compressive strength results (1050 & 1299 kg/cm 2 ...
Gypsum occurs in extensive beds formed by the evaporation of ocean brine. It also occurs as an alteration product of sulfides in ore deposits and as volcanic deposits. Name: From the Greek name for the mineral, but more especially for the calcined mineral. Association: Halite, celestine, calcite, aragonite, anhydrite, dolomite, sulfur.
GB235612009-1689093-Methods for determining the physical and mechanical properties of coal and rock--Part 6:Methods for determining the moisture content of coal
2. physical-mechanical properties of layer and following deposits MINING TECHNOLOGY Blasting 1. physical-mechanical characteristics of coal layer 1. layer thickness Cutting 1. physical-mechanical characteristics of coal layer 1. layer thickness Scraping 1. physical-mechanical characteristics of coal layer 2. layer thickness 1. physical ...
@article{osti_889030, title = {Physical and Numerical Analysis of Extrusion Process for Production of Bimetallic Tubes}, author = {Misiolek, W Z and Sikka, V K}, abstractNote = {Bimetallic tubes are used for very specific applications where one of the two metals provides strength and the other provides specific properties such as aqueous corrosion and carburization, coking resistance, and ...
Jan 01, 2015· The physical, mechanical, and thermal properties of snow, ice, and permafrost control the dynamics of associated cryospheric hazards. These properties are vital to the numerical modeling and forecasting of natural hazards involving snow, ice, and permafrost. Snow cover area varies dramatically throughout the year.
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