Browsing by Author "Mohammed, G. A"
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Item Characterization of Baruten Local Government Area of Kwara State (Nigeria) fireclays as suitable refractory materials(Faculty of Engineering, University of Nigeria, Nsukka, Nigeria, 2018-06-10) AJAO, K. S; Shuaib-Babata, Y. L; Ambali, I.O; Mohammed, G. A; Yaru, S. S; Abdulkareem, S; Busari, Y. OStudies have shown that adequate attention needs to be paid on processing of solid minerals that are potentially available in Nigeria to address its economic problem. Clays from five major towns in Baruten Local Government Area, Kwara State, Nigeria were examined using ASTM guidelines to determine their suitability for refractory applications. The clay samples were classified as Alumino-Silicate refractories due to high values of Al2O3 and SiO2. The results showed apparent porosity (19.4-25.6%), bulk density (1.83-1.90 g/cm3), cold crushing strength (38.7-56.1 N/mm2), linear shrinkage (4.4 – 9.3%), clay contents (52.71-67.83%), moisture content (17.0-23.6%), permeability (68-82 cmsec-1), plasticity (16.7-30.4%), refractoriness (>1300oC) and Thermal Shock Resistance (23-25 cycles) for the clay samples, which were measurable with the established standards for fireclays, refractory clays/brick lining or alumina-silicates and kaolin. Hence, the natural clays could suitably replace imported clays in some refractory applications. Appropriate use of information from this study would improve Nigeria’s industrialization and economic diversification.Item Characterization of Baruten Local Government Area of Kwara State (Nigeria) fireclays as suitable refractory materials(Faculty of Engineering, University of Nigeria, Nsukka, Nigeria, 2018-04-10) AMBALI, IBRAHIM OWOLABI; Shuaib-Babata, Y. L; Yaru, S. S; Abdulkareem, S; Busari, Y. O; Ajao, K. S; Mohammed, G. AStudies have shown that adequate attention needs to be paid on processing of solid minerals that are potentially available in Nigeria to address its economic problem. Clays from five major towns in Baruten Local Government Area, Kwara State, Nigeria were examined using ASTM guidelines to determine their suitability for refractory applications. The clay samples were classified as Alumino-Silicate refractories due to high values of Al2O3 and SiO2. The results showed apparent porosity (19.4-25.6%), bulk density (1.83-1.90 g/cm3), cold crushing strength (38.7-56.1 N/mm2), linear shrinkage (4.4 – 9.3%), clay contents (52.71-67.83%), moisture content (17.0-23.6%), permeability (68-82 cmsec-1), plasticity (16.7-30.4%), refractoriness (>1300oC) and Thermal Shock Resistance (23-25 cycles) for the clay samples, which were measurable with the established standards for fireclays, refractory clays/brick lining or alumina-silicates and kaolin. Hence, the natural clays could suitably replace imported clays in some refractory applications. Appropriate use of information from this study would improve Nigeria’s industrialization and economic diversification.Item Suitability of some selected Ado-Ekiti (Nigeria) natural moulding sands’ properties for sand casting(Faculty of Engineering, Covenant University, Ota, Nigeria, 2017-12-02) AMBALI, IBRAHIM OWOLABI; Shuaib-Babata, Y. L; Yaru, S. S; Abdulkareem, S; Ajayi, S; Busari, Y. O; Ajao, K. S; Ibrahim, H. K; Mohammed, G. AIn achieving accelerated and sustaining economic growth and development in Nigeria, there is need for domestication of finished goods production through sustainable industrialization. Foundry technology is one of the vital bases for rapid industrial development of any nation. Samples of moulding sand at green state were collected from four different moulding sand deposits within Ado-Ekiti in Nigeria. The samples were prepared using ASTM and British standards, while the materials’ Physico-mechanical properties were evaluated using American Foundry Society (AFS) guidelines. The results obtained from the tests were compared with the AFS’s satisfactory mould sand properties for various types of metal castings. The sand samples were found to meet the requirements for casting various metals of different types like Aluminum, brass and bronze, light and malleable iron, light and medium grey iron, except heavy steel. The presence of red oxide in the sands and the specimens’ higher compressive strength values show that the natural sands will be suitable for casting of non- ferrous metal of low temperature. Effective application of the sample sands in casting will also enhance industrialization, job creation and the nation self-reliance through reduction in importation of foundry sand and foundry products into the