The maximum degree of desulphurisation is 84% with the addition of 2–3 wt% synthetic slag for Al killed steel while 32% for non-killed steel is achieved. ... The chemical composition of the ...
Steel slag is a by-product of the steelmaking process. In fact, each ton of steel produces 110–150 kg of steel slag. China's steel slag reserves are more than 300 million tons, and the annual hoard continues to increase [1].Due to the different steel composition, scattered varieties of converter slag and complex composition exist, which seriously limits the Chinese …
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 ...
Table 2 records the chemical compositions of steel slag through an X-ray fluorescence semi-quantitative analysis. The most prominent component is CaO, followed by Fe2O3 and SiO2, …
In this study, the chemical composition of steel slag was tested using an X-ray fluorescence (XRF) spectrometer with the model PANalytical Axios. 3.3. Pore characteristics test. In order to clarify the pore characteristics of steel slag, it is important to ensure full coverage of the pore size range. Therefore, mercury intrusion porosimetry ...
Steel slag is an industrial by-product of steel industry and India is India is the 3rd largest steel producer in the world with total steel production of 95.6 MT per annum. It possesses the problem of disposal and is of environmental concern. ... In this paper the physical, chemical and mechanical properties of steel slag are found out and ...
For example, there are some types of slag that harden when alkali stimulation occurs. Many applications utilizing the physical and chemical characteristics of slag have been developed and are being put to use in a broad range of fields. Examples of iron and steel slag compositions. Dissolution characteristics pH
Since steel slag is dense and contains more iron, it is more wear-resistant. Grindability index: standard sand is 1, blast furnace slag is 0.96, and steel slag is 0.7. Steel slag is more wear-resistant than blast furnace slag. …
Steelmaking slags (both iron slag and steel slag) are by-products during iron and steelmaking process and have the same properties in the carbonation [30]. Table 1 demonstrates that the main chemical components of steel slag are CaO, S i O 2, MgO, A l …
Fig. 6 presents the composition of RO phase in synthetic RO phase and three kinds of steel slag. The composition of RO phase in the three types of steel slag is MgO·1.13FeO·0.09MnO, MgO·0.68FeO·0.15MnO, MgO·0.82FeO·0.19MnO, where "a + b" fluctuates around "1", so RO phase with "a + b" equal to "1" is synthesized in the ...
Steel slag, a by-product of steel making, is produced during the separation of the molten steel from impurities in steel-making furnaces. The slag occurs as a molten liquid melt and is...
Due to the chemical composition and mineral composition of steel-making slag are different, it is very necessary to evaluate the CO 2 sequestration capacity of different steel-making slags. The effective components of steel-making slag carbonation are mainly free CaO and MgO and silicate containing Ca/Mg.
Some of the most important aspects that influence the resulting physical and chemical composition are: raw materials (origin and types of scrap, additions…), different practices used in each of the factories, variations in the final products (carbon steels, alloy steels, stainless steels…) and differences in the slag treatments (dumping ...
In this study, we used microorganisms and steel slag to reduce CO 2 emissions. The main objective is to investigate the influence and mechanisms of CO 2 fixation rate based on the composition of steel slag. In the absence of microorganisms, steel slag powders with higher C 2 S content exhibit higher CO 2 fixation rate. The absolute content of C 2 S decreases by …
The primary components of iron and steel slag are limestone (CaO) and silica (SiO 2). Other components of blast furnace slag include alumina (Alsub>2 O 3 ) and magnesium oxide …
All pretreatment methods led to changes in the chemical composition of the steel slag. Compared to natural aging, the remaining methods can significantly speed up the pretreatment. Natural aging, thermal water immersion, and acetic acid solution immersion rapidly consume the free oxides in steel slag through chemical reactions to improve the ...
The chemical composition of steel slag is highly variable and depends on the steel making process, the raw materials used, and the furnace conditions (Shi, 2004). Needless to mention, …
The chemical composition of steel slag is similar to that of silicate cement, containing silicate phases, and exhibiting certain cementitious activity [4, 5]. Thus, it can be used as a partial substitute for cement clinker. Cement, as an indispensable material for infrastructure construction, is used in large quantities.
The chemical composition of LF slag results in reduced mechanical properties compared to that of black slag, making it unsuitable for its use as an artificial aggregate. ... Physico-chemical characterization of steel slag. study of its behavior under simulated environmental conditions. Environ. Sci. Technol., 44 (2010), 10.1021/es100690b ...
LTD in Jiangxi province, China. 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 0.1 mm in diameter to eliminate the composition fluctuations in the raw materials. However, 50% used in this experiment cannot ...
The chemical composition of steel slag varies with different furnace types, steel grades, and pretreatment methods [24]. Table 1 summarized the primary chemical compositions of various types of steel slag. It was evident that BOF slag and LF slag had higher CaO content, whereas EAF slag generally had lower CaO content. The MgO content in all ...
Download Table | Chemical composition of GGBFS, FA and Steel Slag (% by weight). from publication: Durability studies on eco-friendly concrete mixes incorporating steel slag as coarse aggregates ...
Steel slag is generated as a by-product in significant amounts during the process of producing steel using a submerged electric arc furnace. Steel slag has attracted the attention of researchers as a potential green and sustainable building material because of its unique chemical composition, physical qualities, and mechanical characteristics.
The chemical composition of the selected steel slag, and its basic physical properties, are shown in Tables 1 and 2. ... Table 11 shows the changes in the chemical elements in the steel slag ...
Steel slag, a by-product of steel making, is produced during the separation of the molten steel from impurities in steel-making furnaces. The slag occurs as a molten liquid melt and is a complex solution of silicates and oxides that solidifies upon cooling. ... The chemical composition of slag is usually expressed in terms of simple oxides ...
The oxide composition of steel slag (wt.%) Oxide CaO SiO 2 Al 2 O 3 Fe 2 O 3 MgO others; Steel Slag: 44.68: 5.84: 1.12: 37.51: 3.2: 7.65: Table 2. the chemical composition of Cement (wt.%) SiO 2 Al 2 O 3 Fe 2 O 3 CaO MgO SO 3 Na 2 Oeq f-CaO Loss Cl-20.82: 4.40: ... Enclosed is a manuscript entitled Exploration of Steel slag by Lignin and sodium ...
The crude steel production on global level has been touched 1,869.9 million tonnes for the year 2019 with China's share about 53.9% (996.3 million tonnes) followed by India 111.2 million tonnes up by 8.3% from the year 2018 [8].China and India have increased their respective crude steel production by 3% and 1.8% for 2019 than previous year.
Incorporating steel slag into the alkali-activated fly ash system effectively enhances the compressive strength of ATC. ... dried, ground, and subjected to another de-ironing process to obtain converter SS powder. The main chemical composition, physical properties, microstructural, and particle size distribution of the precursor are shown in ...
Download scientific diagram | Typical chemical composition of blast furnace slags. from publication: Ironmaking and Steelmaking Slags as Sustainable Adsorbents for Industrial Effluents and ...
In different types of steel slag, the chemical compositions of oxides and the concentration of other minor components are highly variable and change from batch to batch, even in one plant ...
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 distributed along the flow path of that water, potentially contaminating the local environment if left in place for a long period. This contamination is often measured using the TCLP ...
Download Table | Chemical Composition of BOF Steel Slag from publication: Geotechnical Properties of Fresh and Aged Basic Oxygen Furnace Steel Slag | The steelmaking industry in the United States ...
The influence of the reconstructed steel slag composition and structure on the iron reduction rate and vanadium migration was investigated. ... rice husk ash was employed as the mixing material in this study. The chemical composition of the ash is provided in Table 2. The carbon content of the rice husk ash was measured using thermogravimetry ...