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·Analysis of Steel Slag Composition and Properties to Facilitate the Search for Rational Slag Recycling Methods A A Tyutrin N V Nemchinova A N Baranov and for electric steelmaking slag respectively Chemical composition study showed the following content of the main elements for electric steelmaking slag mass %
·chemical composition Then the slag floats on top of the molten bath of steel The liquid slag is water cooled at temperatures around 1600 °C Slag then phase contents of carbon steel slags characterized than that of stainless steel slags by including C 3S as the most important hydraulic phase in cementitious
·The main chemical composition of steel slag is basically similar to that of Portland cement clinker and blast furnace slag The content of crushed steel slag varies according to the furnace type and smelting steel type The chemical composition is mainly CaO SiO2 MgO Fe2O3 MnO Al2O3 and P2O5 etc
An unstable steel slag s mineral content phase leads to volumetric instability [34 50] This instability arises from free CaO and free MgO and the conversion of b C 2 S into c C 2 S Free CaO has
Download Table Chemical composition of the steel making slag from publication Removal characteristics of As III and As V from acidic aqueous solution by steel making slag This study
·The use of slag as a partial replacement for binder in cement depends largely on the mechanical properties of the slag The chemical composition of BOF S is generally an indication of its mechanical strength The higher the basicity or alkalinity content of the slag the better the hydraulic properties tend to be Akin Altun & Yilmaz 2002
The low recycling for reuse of LS slag was mainly attributed to its volume instability disintegration of slag during cooling due to phase transformation and wide ranging slag composition [20
·Slag generated from basic oxygen furnace BOF or Linz Donawitz LD converter is one of the recyclable wastes in integrated steel plants This paper deals with the present and possible use of LD
·The main chemical compositions of the steel slag were characterized by chemical analysis and shown in Table 1 and the steel slag were pretreated by grounding into particles less than mm in diameter to eliminate the composition fluctuations in the raw materials However 50% used in this experiment cannot satisfy the desired composition of
·The main chemical composition of BOF and EAF AOD and LF slags is summarized as shown in Table 1 It can be seen that BOF slag AOD slag and LF slag all have high CaO content and their CaO content is much higher than that of EAF slag The content of MgO in all kinds of steel slag is similar and its content is only wt%
·Typically steel slag is cooled slowly influencing the high content of crystalline free CaO and crystalline iron oxide; therefore the steel slag should be cooled quickly to reduce volumetrically unstable crystalline free CaO and crystalline iron oxide [157] A striking feature of steel slag is the high CaO content 25 55% by weight [158]
·Processed steel slag is generally dense hard strong durable and contains cubic particles Calcium silicon magnesium and aluminum oxides contribute to 92 % of the total mass of LF slag The processing and weathering techniques vary slag chemical composition significantly Tab
·In order to compare the properties of alkali activated carbon steel slag CSS and stainless steel slag SSS the effects of sodium hydroxide/sodium silicate solution mass ratio NH/NS liquid/solid ratio and blast furnace slag BFS dosage on the compressive strength hydration products and hydration degree of CSS and SSS were studied Furthermore a
The FeO content in the BOS slag varies from ≈50 wt% in the early stage through low FeO content in the middle of blow to 15 25 wt% at the end of the blow depending on the steel products and blowing practice Considering the slag composition in the BOS process FeO containing slag should be selected to study the lime dissolution
The main chemical components of steel slag are CaO SiO2 Fe2O3 Al2O3 MgO MnO FeO fCaO etc With the difference of raw material smelting technology and steel type the composition of steel slag also changes The chemical composition of converter slag in some Chinese steel mills is shown in table 1
·Understanding of the chemical mineralogical and morphological properties of steel slag are necessary for its use in sustainable practices This paper provides an overview of the different types of steel slag that are generated from basic oxygen furnace BOF steelmaking electric arc furnace EAF steelmaking and ladle furnace steel refining
·SLAG IRON AND STEEL Table 2 Chemical Composition of Slag Generated in Steel Plants Chemical composition % Physical Name of plant Slag properties SiO 2 Al 2 O 3 CaO MgO MnO FeO S Basicity CaO/SiO 2 Bhilai Steel Plant BF Durg Chhattisgarh
·The chemical contents of EAF slags may vary because the raw material used in an electric arc furnace is steel scraps with the chemical components collated with the EAF slags As seen in the chemical composition of the raw steel slag the main concern is the leaching of the heavy metals into groundwater Once in solution the metals are
·The chemical composition of LF slag is different than that of BOF and EAF slag LF slag has low iron oxide content than the other two slags In general the chemical composition of LF slag comprise of FeO 15% SiO 2 2 35% Al 2 O 3 5 35% CaO 30 60% and MgO 1 10% Shi 2004 Characteristics of iron and steel slags
·1 Introduction Steel slag SS is a waste residue produced by steelmaking which produces more than 110 million tons each year in China but the effective utilization rate of SS is about 22% [1] The accumulation of SS is not only a waste of resources but also a pollution to the environment [2] [3] [4] Researches show that SS and Portland cement clinker have
·LF slag typically has a higher content of oxides such as CaO and MgO with a lower FeO content compared to the BF and BOF slag types [82] This higher basicity enhances the desulfurization and inclusion removal capabilities of LF slag during the steel refining process sulfur concentration in steel less than % [82]
