Experimental cold modelling of hearth drainage was performed at Bluescope Steel Research Laboratories to understand the impact of variable drainage rate on slag removal. These drainage studies were designed to simulate real operational aspects such as: continuous casting, variable tapping rate and inflow liquid distribution. During the analysis of these drainage experiments it was demonstrated that the residual-flowout correlation in use since the 1970??s may possibly be incomplete or inaccurate. The removal of slag from the blast furnace hearth is the greater concern of the two liquids produced in the iron making process. In the 1970??s operational difficulties arose when large volumes of residual slag remained in the furnace after casting. This prompted research related to the flow of viscous liquids through uniformly packed beds providing fundamental insight on the most effective means of removal of slag from the blast furnace hearth. The core subject of this study, the residual-flowout correlation developed by Fukutake and Okabe that is used to predict cast duration and liquid accumulation in the blast furnace hearth is discussed in detail. The residual-flowout correlation is examined for four different sets of conditions based on constant or increasing slag drainage, with and without liquid dripping. The outcome of this study will improve our understanding of the residual-flowout relationship and develop it further, so that drainage conditions whether for constant or increasing drainage rates, with or without dripping, will hold using the one general Fl equation.

Experimental cold modelling of hearth drainage was performed at Bluescope Steel Research Laboratories to understand the impact of variable drainage rate on slag removal. These drainage studies were designed to simulate real operational aspects such as: continuous casting, variable tapping rate and inflow liquid distribution. During the analysis of these drainage experiments it was demonstrated that the residual-flowout correlation in use since the 1970??s may possibly be incomplete or inaccurate. The removal of slag from the blast furnace hearth is the greater concern of the two liquids produced in the iron making process. In the 1970??s operational difficulties arose when large volumes of residual slag remained in the furnace after casting. This prompted research related to the flow of viscous liquids through uniformly packed beds providing fundamental insight on the most effective means of removal of slag from the blast furnace hearth. The core subject of this study, the residual-flowout correlation developed by Fukutake and Okabe that is used to predict cast duration and liquid accumulation in the blast furnace hearth is discussed in detail. The residual-flowout correlation is examined for four different sets of conditions based on constant or increasing slag drainage, with and without liquid dripping. The outcome of this study will improve our understanding of the residual-flowout relationship and develop it further, so that drainage conditions whether for constant or increasing drainage rates, with or without dripping, will hold using the one general Fl equation.

Home is something which is not easily defined. It cannot simply be described as a place, or a building, but as an idea of a place. The place is different for everyone. For some it is where they grew up, for others it is where they currently live. The idea of that place is similar for everyone. When thinking of that place, everyone is reminded of the people they met, the things they learned, and the memories which made it their home. This thesis aims to define home, and how the idea of home can be created into Architecture. The Architecture is not meant to be reminiscent of a home, in the sense of a dwelling, but have the aspects which create the idea of home. These aspects include the concepts of community, education, and memory. Using these concepts, the Shaw Community and Recreation center was developed, which embodies the idea of home. / Master of Architecture

This thesis is an exploration of method demonstrated in a series of mechanical drawings of the elements. An investigation of methods of drawing and of how different questions can be asked through drawing. Furthermore, this thesis asks the question of place in the elements of fire, earth, and sky in the formal relationship between walls, joints, trusses. These architectural elements protect against the natural ones, forming place focused around the hearth. This thesis traces the formal relationship between the elements of architecture stemming from the German thinker Gottfried Semper's treatise on architecture, but diverges from Semper's fixation with materiality and delves into questions of form, appearance, and construction through drawing. The drawings address questions about the elements; questions about form, tectonics, and the relation of part to whole. The whole becomes a building focused on forming a place and the relation of the elements to one another. / Master of Architecture / "Throughout all phases of society the hearth formed that sacred focus around which the whole took order and shape. It is the first and most important, the moral element of architecture. Around it were grouped the three other elements: the roof, the enclosure, and the mound, the protecting negations or defenders of the Hearth's flame against the three hostile elements of nature" (Semper 102) This reading, The Four Elements of Architecture by Gottfried Semper, and this quote were the origin of my thesis, which became a series of studies of these elements as parts and their relations to one another. Through mechanical investigative drawings I explored the traits and qualities assigned to these elements by Semper and developed my own understanding of them. Each element has a tectonic quality and architectural characteristic that defines it. The tectonic quality is "different technical skills of man used to construct the elements: ceramics and afterwards metal work around the hearth, water and masonry works around the mound, carpentry around the roof and its accessories… Wickerwork was the essence of the wall" (Semper 103-104). The mound forms the base of the building connecting it to the hearth, and also joins to the hearth and raises it. The roof as a dominant element protects from above. The wall is a spatial enclosure that forms the protected space. The hearth is the central and social element of the building, protected from nature by the other elements. In addition to an investigation of each of the elements, I also had an interest in constructing a building informed by these investigations, forming a place of gathering that focused around the hearth. How would the protective elements form and appear in space, and how would the hearth form the place around it. The wall, defined as woven and enclosing, led to a series of questions regarding its form, material, and connection to the other elements. Semper's understanding of woven extends to being a dressed wall or a wall of a pattern of parts, such as brick or wood. How can variation of size, depth, and material be used to form patterns in a wall? How do hierarchies of panels, verticality, and horizontality differ from one another? How can the wall connect to the mound and emphasize the existing character of the building? The roof, defined as dominant and of carpentry, led to a series of questions regarding frames and joints. My main interest in the roof was its structure, and the interior spatial quality it provided. How can the joint and the frame inform one another? What are the qualities of trusses? What are different types of joints and how do they display themselves? How do joints form a truss and the truss form a frame? The mound, defined as earthen and meeting, was investigated in conjunction with other elements. It forms the base that protects the hearth from the earth and acts as a base to the other elements. Its original use as a structural base for houses in marsh lands is no longer prevalent and its role lessened. Semper understood this evolution, "some elements [become] more developed while others [recede] into the background" (Semper 103). The hearth, defined as central and of worked metal, led to a series of questions regarding material, form, and relation to its surroundings. The hearth acts as a single focus that forms areas of repose protected by the other elements from nature. How should it connect to the roof and the floor? Benefits of a hanging hearth versus traditional? How can it act as more by storing wood and the other tools it needs to be worked? How can it relate to other elements through material and form? As Semper stated, "some elements [become] more developed" and I found some of these progressions through my studies. One of these developments is the hearth creating areas of transition in the interior and the need to connect this transitioning to the exterior. The frame of the hearth is repeated as a threshold, forming an area of transition between the exterior and the interior. Another development is the roof and the chimney belonging to the sky. As the mound recedes from importance, the sky and its connection to the roof develops further. These boards each developed from a series of questions, and led to further questions. They ask about the part and then about the part in relation to other parts. Each question can stand on its own, but it is only when you keep asking questions that you begin to find something. Each part is its own, but when formed together it creates something new. And that was my thesis, a series of questions and the joining of parts.

The north east of England witnessed dramatic economic and social change during this period. This study utilises documentary and archaeological sources to investigate the ways in which houses were built and lived in between the late sixteenth and early eighteenth century. Chapter One, `Introduction', addresses the issues associated with architectural change in this period and explains the evidence employed to analyse the social and economic context of housing and relationship of architectural to social change. Chapter Two, `Regionality', defines a region centred on County Durham including Newcastle as the regional capital. Chapter Three: Households in the Hearth Tax 1660-1680, analyses the social stratigraphy of housing mid-way through the study period. Chapter Four: House Survival, establishes the proportion of surviving , houses and questions previous assumptions involved in the analysis of housing change from standing buildings. Chapter Five: Rebuilding Houses, demonstrates the chronology of rebuilding by separate social groups and the ways in which the internal arrangement and external appearance of houses altered between c. 1570 and 1730. Chapter Six: Housing through the Life Cycle, outlines the typical changes in housing through the life cycle, focusing particularly on the relationship between marriage and rebuilding. Chapter Seven: Houses in the eighteenth century Property Market, shows the significance of the commercial exchange of houses from newspaper property advertisements. Chapter Eight: Durham and Newcastle Houses, analyses architectural change and the social topography and turnover in occupancy of housing in the urban centres of the north-east region. Chapter Nine: The Building Process, investigates the mechanisms for architectural change and evaluates the relationship between regional variation and social identity in houses. Chapter Ten: Conclusions, appraises the role of material culture in social process in houses in one corner of early modem England.

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The thesis of this project is to develop a language of architecture for the design of a rural house. Parameters for this language are specified through program, ideas about living in a country home, and the importance of integrating the building with its site. The parameters are reaffirmed through the materials and elements of architecture. In order to develop a cohesive language, four houses have been designed for four different sites. Each house implements the specified parameters in a manner appropriate to the setting of the surrounding landscape. The houses themselves become a transition between the inside and the outside and between the natural and the man-made. Thus this thesis is: Four Houses - A Language of Transition from Earth to Sky. Our experience-space is necessarily in conflict with the space of nature. The space that nature offers us rises above the ground and is oriented entirely towards the earth's surface. The contrast between the mass of the earth below and the space of the air above, which meet at the surface of the earth, is the primary datum of this (experience) space. Dom H. Van Der Laan, "Architectonic Space" (E.J. Brill, 1983), p. 5 / Master of Architecture

A mathematical model to simulate the reaction kinetics of dust–carbon composite agglomerates in an RHF was developed. Major chemical, thermal and physical phenomena taking place during RHF treatment were formulated and the corresponding equations were solved to yield the trend of solid composition, temperature and gas composition of the agglomerates. The model calculation results indicate that the pellet reduction is accelerated by the reducing gas from high–volatile reductants if the gas is released after the pellet temperature is sufficiently high for reduction. The reduction of zinc oxide can also be represented using the model by implementing its small particle size caused by the inherent vaporization/re–oxidization process that zinc comes through in a melter. It was demonstrated that the proposed model can be used as an engineering tool to determine the optimum operating conditions for the RHF process to promote recycling a wide range of waste materials.

A mathematical model to simulate the reaction kinetics of dust–carbon composite agglomerates in an RHF was developed. Major chemical, thermal and physical phenomena taking place during RHF treatment were formulated and the corresponding equations were solved to yield the trend of solid composition, temperature and gas composition of the agglomerates. The model calculation results indicate that the pellet reduction is accelerated by the reducing gas from high–volatile reductants if the gas is released after the pellet temperature is sufficiently high for reduction. The reduction of zinc oxide can also be represented using the model by implementing its small particle size caused by the inherent vaporization/re–oxidization process that zinc comes through in a melter. It was demonstrated that the proposed model can be used as an engineering tool to determine the optimum operating conditions for the RHF process to promote recycling a wide range of waste materials.

<p>This study has focused on determining the heat flows in a production blast furnace hearth. This part of the blast furnace is exposed to high temperatures. In order to increase the campaign length of the lining an improved knowledge of heat flows are necessary. Thus, it has been studied both experimentally and numerically by heat transfer modeling. Measurements of outer surface temperatures in the lower part of a production blast furnace were carried out. In the experimental study, relations were established between lining temperatures and outer surface temperatures. These relations were used as boundary conditions in a mathematical model, in which the temperature profiles in the hearth lining are calculated. The predictions show that the corner between the wall and the bottom is the most sensitive part of the hearth. Furthermore, the predictions show that no studied part of the lining had an inner temperature higher than the critical temperature 1150°C, where the iron melt can be in contact with the lining.</p>