Basic oxygen steelmaking BOS slag a product of hot metal element Si Mn Fe P oxidation and flux lime dolomite dissolution plays a critical role in the production of high quality crude steel although its behavior inside the BOS vessel formation and reaction with metal droplets and gas is still not clear and its recycling has always been challenging
·Steel slag is an industrial by product of steel manufacturing processes and has been widely utilized within civil and construction materials for road materials and environmental remediation in countries like Japan USA and European Union nations However the current utilization of steel slag in Vietnam is very low mainly because of lack of quality control of slag
·The significance of first making slag then making steel The goal of secondary steelmaking is to deliver a ladle of homogeneous liquid steel to the casting machine on time at the right temperature and meeting total chemical specifications This is only possible if the slag is conditioned and optimized first
·One of the first studies on concrete with slag aggregates was by Dr Akinmusuru [35] in which several series of concrete specimens were tested with different percentages of LD converter slag in substitution of cement and study established that the concrete specimens with slag aggregates were similar and even had better mechanical properties than
·1 INTRODUCTION Blast furnace slag BFS and steel slag SS as industrial solid wastes produced in the process of steel making account for 80% 90% of the total smelting slag [] BFS accounts for about 30% of pig iron output [] while SS accounts for 10% 15% of the crude steel output [] SS comprises various slags including basic oxygen furnace slag BOFS
·The reason is that steel making slag is difficult to use as roadbed material because the unrefined lime present in it expands and contracts Aging treatment for steelmaking slag is performed at steel plants to inhibit the expansion of slag based on the hydroxylation of free CaO to produce cement materials However the aging treatment of this
·The mass production of steel is inevitably accompanied by large quantities of slags The treatment of ironmaking and steelmaking slags is a great challenge in the sustainable development of the steel industry Japan and China are two major steel producing countries that have placed a large emphasis on developing new technologies to decrease slag emission or
·Steel slag is the main solid waste generated in the steel making process accounting for 15 to 20% of crude steel output [1] China s crude steel output in 2021 was billion tons [2] more than half of the global crude steel output billion tons [3] and the steel slag output exceeded 120 million contrast the comprehensive utilization rate of
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