The investigation of the heat transfer properties of ferrochrome slugs in various combinations

VI SUMMARY MSc Thesis THE INVESTIGATION OF THE HEAT TRANSFER PROPERTIES OF FERROCHROME SLUGS IN VARİOUS COMBINATIONS Tül ay YILDIZ Fırat University Graduate School Of Natural and Applied Sciences Department Of Metal Education 1 994. Page : 73 It was one of the common subjects to use the slags from metallurgical solid was the materials for the metallurgy and envorinwent engineers. The slag has been trying to utilize in industrial plants and construction. The slug are being currently used as cement kl inker additne or raw rnetarial for fertilizers, mortar or brick additive and insulation In this study, the thermal conuctivity of the solid poraus building materials which are obtained by mixing the ferrochrorn slag and various bindings at specific rates, was investigated and their serviceability as insulation plaster were examined. The slag used in the experiments is suppplied from Elazığ ferrochromes slag plants and separated into the various grain size groups. Portland cement (KPÇ 325), lime and a mixture of cement and lime are used as binding and 36 specimens are prepared depending on the kind and percentage of cement.VII In all slag and binding mixtures, the weight percentages of slag are taken as 70, 50, 30 and 10. The specimens in the form of plate are prodeced by pouring the mortar into the dies. Then the heat conduction properties and the servicability as an insulation mortar, of these specimeens were investigated. In the first chapter of this study, the subject was introduced. In the second chapter information about ferrochrome production was given. In the third chapter the propertiesof the slag was given. In the chapters the experimental study and the results were presented. From the results the following conalusions were obtained; - Water absorbing test was applied to the specimens in order to determine the freezing resistance. From the test results it was understood that water absorbing rate was under the value of TSI, which is 830 for the cement (combinations) mixtures. Therefore, the slug-cement mixture was seen to be able to be used as external mortar. But for the other mixtures the water absorbing rate was found to bo more then 30 percent. Since the mortar to be produced with these mixtures will not give a good result, as external mortar, the insulation material obtaind could be used at the places where there is no any direct contact with water as internal mortar underroof covering and filler in the sandwich walls. - In case slug is used in the internal mortar. The mortar gained insulating character with respect to the kind of the binder. - It is more economical and money saving to use the mortar with slug because of its pusolan character. Due to this character the heating expences will decrease.