Pusat Pengajian Kejuruteraan Bahan dan Sumber Mineral - Monograf

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Browsing Pusat Pengajian Kejuruteraan Bahan dan Sumber Mineral - Monograf by Author "Abdul Rahman, Hazrina"

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    Pengelasan mineralogi dan kimia bagi lempung dari sarawak barat, malaysia untuk kegunaan dalam industri jubin di Malaysia
    (2004-03-01)
    Abdul Rahman, Hazrina
    This study is carried out in order to make a chemical and mineralogy classification of kaolin and also to determine the physical properties and firing properties of clay for the use in the Malaysian tile industry. Five samples have been taken from four places of West Sarawak which including Kampung Sebangkoi, Jaong, Telaga Air and Kampung Keranji-Serayan (2 samples). In order to achieve the objective of the study, some characterization analysis has been conducted to the samples which can be divided into the mineralogy and chemical study which including, x-ray analysis, determination of morphology, particle size analysis, pH test, determination of loss of ignition contents and moisture contents. For physical study, the study for specific gravity, plasticity index and observations of the raw samples colour has been carried out. The study also conducted to the firing samples to determine the shrinkage, strength, porosity, water adsorption and bulk density of the body. From the study, the phase of mineral exists is almost the same which contains kaolinite, illite, mica and quartz. The contents of the oxides is also the same but different in the amount. The flaky morphology can be observed under the scanning electron microscopy. For the particles size distribution, all of the samples is very fine with more than 40% of the particles are less than two micron in size except for the sample from Jaong. Therefore, the plasticity index for the sample from Jaong is also low. For firing body, when the shrinkage increases, the porosity and the water adsorption rates is low. However, the bulk density will arise. The strength will be increases with the increasing of the firing temperature. The color of the body also will change to become brighter with the increasing of the firing temperature. After compared with the LORENZ specifications, not any of the samples is matching with all the specifications required. However, it is also some of the parameter is fulfilled. From the result obtained, it is suggested that the sample from Kampung Keranji-Serayan (B) is the most suitable as a raw materials in tile industry.