9 results for “Reaction Department”
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Medical study · Medical research · 2008
The transformation sequence of cement-asbestos slates up to 1200 degrees C and safe recycling of the reaction product in stoneware tile mixtures
…this paper reports the description of the reaction path taking place during the firing of cement-asbestos slates up to the complete transformation temperature, 1200 degrees C. The reaction sequence was investigated using different experimental techniques…
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Medical study · Medical research · 2009
The thermal transformation of Man Made Vitreous Fibers (MMVF) and safe recycling as secondary raw materials (SRM)
…wt.% of the melts of Rock and Glass wool gave promising results in terms of viscous sintering reactions and resistance to staining with the only weak characteristic being the color properties of the fired bodies which…
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Medical study · Medical research · 2017
Magnesium oxide production from chrysotile asbestos detoxification with oxalic acid treatment
…treatments destructed the Chr structure while a new biomaterial, Glushinskite (Gls) was formed by the reaction between Oxac with the outer Brucite (Brc) (MgO2) layer surface of Chr. Oxac 0.05M was selected as the optimal…
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Medical study · Medical research · 2014
Thermochemical destruction of asbestos-containing roofing slate and the feasibility of using recycled waste sulfuric acid
…chrysotile structure has revealed that the destruction of chrysotile by acid-digestion is greatly influenced by the reaction temperatures, showing a 80.3-fold increase in the reaction rate by raising the temperature by 30-100°C…
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Medical study · Medical research · 2009
A novel decomposition technique of friable asbestos by CHClF2-decomposed acidic gas
…for 30 min, respectively, by CHClF(2)-decomposed acidic gas. The observation of the reaction products by phase-contrast microscopy (PCM) and scanning electron microscopy (SEM) confirmed that the resulting products did not contain any asbestos.
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Medical study · Medical research · 2008
In situ ESEM study of the thermal decomposition of chrysotile asbestos in view of safe recycling of the transformation product
…in cement-asbestos. It was found that the reaction kinetics of thermal transformation of chrysotile was highly slowed down in the presence of water vapor in the experimental chamber with respect to He. This was explained…
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Medical study · Medical research · 2009
Asbestos health hazard: a spectroscopic study of synthetic geoinspired Fe-doped chrysotile
…the Fe doping extent. Geoinspired synthetic chrysotile at different Fe doping extents has been obtained as unique phase by hydrothermal reaction in the presence or not of metallic Fe in the synthetic environment. The results highlight…
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Medical study · Medical research · 2014
Morphological changes during enhanced carbonation of asbestos containing material and its comparison to magnesium silicate minerals
…mineral carbonation. The study revealed that oxalate even at a low concentration of 0.1M was effective in enhancing the extent of ACM carbonation and higher reaction temperatures also resulted in increased ACM carbonation. Formation of…
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Medical study · Medical research · 2013
Crystal chemistry of the high temperature product of transformation of cement-asbestos
…for 15 min. After firing, they underwent a series of solid state reactions leading to global structural changes of the matrix. Effects of annealing time and temperature on the crystallization kinetics were thoroughly investigated. Both factors…