No. 1688, Gaoke East Road, Pudong new district, Shanghai, China.
No. 1688, Gaoke East Road, Pudong new district, Shanghai, China.
The solution was used to activate a mix between ladle slag and arc furnace slag. Furthermore, Xu and Yi (2020) activated ladle and ground granulated blast furnace slag (GGBS) mixes with a sole activator of either sodium hydroxide (NaOH), sodium sulfate (Na 2 SO 4), or sodium metasilicate (Na 2 SiO 3) with 1, 2, and 4 M respectively.
Slag Composition: The composition of furnace and ladle slag is often very complex. The slags that form in electric furnace melting result from complex reactions between silica (adhering sand and dirt from casting returns), oxides from scrap, other oxidation by-products from melting and reactions with refractory linings.
It was noticed that samples of group 1, which mainly depends on blast furnace slag, were found to be melted at temperatures ranging from 1350 °C to 1380 °C and melting time ranging from 60 to 90 min, the viscosities of the samples increased with an increase in kaolin percent from sample An10 to sample An 50. Kaolin tends to increase the ...
As the blast furnace was mostly in a slag-hanging state for the majority of the time, research in this field provided limited assistance to the normal production of blast furnace. Cheng, Wu, and Qian [17,18,19,20,21] et al. used the method of pre-setting the slag layer thickness to calculate the temperature field of the cooling stave. They ...
When treated BOF slag was used as a blast furnace slag replacement in cement production (up to 5.4 %), the amorphous C 4 AF in BOF slag joint with C 3 A in cement allowed acceleration of the cement hydration reaction. This provided the gain in early and late strength of cement for every BOF slag sample.
A Ladle Metallurgy Furnace, better known as the LMF, is used to refine molten steel into specialty grades while remaining in the ladle. This relieves the primary steelmaking furnace of most secondary refining operations. The main …
Shi 35 used Na 2 SiO 3 to activate the LF slag-ground granulated blast furnace slag (GGBS) mixture to replace cement in mortars. The Na 2 SiO 3-activated slag exhibited better cementitious properties compared to the non …
Ladle furnace slag can also be combined with certain neutral or alkaline materials to form composite geopolymers. A geopolymer produced using ladle furnace slag and blast …
In terms of the ecotoxicological characteristics, Pavlovsky et al. [16] confirmed the environmental safety of steel slag under specific conditions by analyzing different types of steel slag, such as ladle slag, blast furnace slag, and converter slag. They focused on the ecotoxicity of samples with different particle sizes, which lays a ...
The chemical and mineral components of LFS are quite different from those of ordinary steel slag and blast furnace slag. The chemical components of LFS are mainly CaO, Al 2 O 3, and SiO 2, and they exist in the form of C 12 A 7 and a small amount of the C 2 S crystal mineral phase [22], [23], [24]. C 12 A 7 is a fast setting mineral with a fast ...
Slag, whether granulated blast furnace slag (GBFS) or ladle slag, is a non-metallic steel residue exhibiting latent hydraulic properties owing to its amorphous structure and special chemical ...
Steel slag is a by-product of steelmaking which has emerged as a potential CO 2 sequestration material due to its high reactivity and abundance. This research investigates the use of steel slag waste for the direct capture of carbon from air and its storage through mineral carbonation. Two abundant wastes, blast-furnace slag (BFS) and ladle slag (LS), were tested for their carbon …
Ladle furnaces at Evraz Nizhnii Tagil Iron and Steel Works OJSC produce over 90,000 metric tons of slag per year. As this slag cools, it turns into a fine-grained powder; if the powder cannot be sold, it is temporarily stored until it can be disposed of [1]. We have considered producing easily used flux sinter from the slag generated during ladle processing of steel …
Blast-furnace slag 36.7 12.3 41.2 7.8 -- 0.25 -- MnO TiO2 R20 S C CaO CaO+MgO SiO2 SiO2 Total sample 0.87 1.60 1.16 0.19 1.80 0.45 0.53 ... Comparison of the chemical compositions of the pig and slag during the period of mass ladle skull formation and a period of normal ladle operation shows little difference. The pig and slag compositions in ...
Depending on how these slags are formed, they are classi-fied into basic oxygen furnace (BOF) or electric arc furnace (EAF) slag. Further refining of the steel products from the BOF and EAF …
2 capture, Ladle furnace slag, Sustainable industry, Waste valorization ... Donawitz (LD), ground granulated blast furnace (GGBF), and LF slag, emphasizing the reuse of BOF and EAF slags. Najm et al. [12] reviewed the application of LF slag-based materials in construction. Varanasi et al. [13] studied the recycling of LF
iron and steel industry slags, namely, the blast furnace (BF) iron slag, the basic oxygen furnace (BOF) the steel slag, the electric arc furnace (EAF) steel slag, and the ladle furnace ... the ladle furnace slag were created, and they were marked withnumbers . Oneofthese,astherepresentativesample sieved to particle size . . mm, is used for further
The raw ladle slag (LS) and blast furnace slag (BS) were provided by Shandong Tai'an Steel Co., LTD and Dehang Minerals Co., LTD, respectively. LS and BS were ground and sieved by 200 mesh sieve. The particle size distributions of LS and BS measured by Laser Particle Size Analyzer are presented in Fig. 1.
This paper reviews the use of ladle fluxes, mineralogical compositions of different types of LF slag, various methods available to prevent disintegration of Ladle furnace slag, …
The molten slag is tapped from time to time through the slag notch (i.e. separate tap hole) into the slag ladle and is used as feedstock for the manufacture of slag cement, etc. The top gas is known as blast furnace gas .
Request PDF | On May 24, 2019, Bo Xu and others published Soft clay stabilization using ladle slag-ground granulated blastfurnace slag blend | Find, read and cite all the research you need on ...
Ladle furnace (LF) slag can be used as a replacement to synthetic fluxes owing to its chemical and mineralogical compositions. ... Man FZĂ (2007) X-ray diffraction analysis of steel slag and blast furnace slag viewing their use for road construction. Sci Bull B Chem Mater Sci 69:100–108. Google Scholar Bharati S, Basavaraja VM, Jagadeesha RJ ...
Total steel production in Spain from basic oxygen furnaces amounted to 16.5 Mt (12 Mt from electric arc furnaces and 4.5 Mt from blast furnaces) in 2004, leaving 2.5 Mt of residual slag as a by-product and current annual production continues at roughly similar levels.However, the properties of this slag are far from uniform, and it is possible to distinguish …
Ladle slag, a byproduct of steel manufacturing, exhibits inherent reactivity and undergoes hydration when exposed to water. Nevertheless, these reaction byproducts often remain metastable, leading to microstructural alterations when incorporated into cementitious materials, thereby limiting the recycling potential of ladle slag. This study explores the fire …
Blast Furnace Process 2 The objective of the blast furnace (BF) is to produce hot metal. The blast furnace is a tall, vertical ... into the slag ladle and is used as feedstock for the manufacture of slag cement, etc. The top gas is known as blast furnace gas. It has a considerable caloric value since it contains carbon monoxide gas. The dust must
Several precursors have been investigated to produce thermal and fire-resistant AAMs, such as blast furnace slag (BFS), fly ash (FA), metakaolin, copper slag, mine tailings, and ladle slag (LS) [10, 12, [16], [17], [18]].BFS-based AAMs show high resistance during exposure to elevated temperatures, likely due to the absence of Ca(OH) 2 in their gels but mainly …
Here, FS was blended with waste-based reactive co-binders such as ladle slag (LS) and blast furnace slag (BFS) to improve the fresh and hardened state properties of the AAMs for potential construction applications. The results showed that the incorporation of LS and BFS as an additional source of Ca and Al accelerated the reaction kinetics and ...
Raw material with a high Al2O3 content has led to an increase in the Al2O3 content in blast furnace slag, which has affected the normal operation of a blast furnace. The exergy analysis method is an important method for studying the energy utilization of high-alumina blast furnace smelting. In this paper, to investigate the impact of slag composition on exergy …
The liquid hot metal and slag are tapped from the blast furnace intermittently or continuously depending on the size of the furnace. Hot metal is tapped into a torpedo car which is transported by rail to the hot metal pretreatment station, and the blast furnace slag is tapped into a slag ladle which is transported by trucks to a slag pit.
Approximately 21 million tons of steel industry slag are produced each year in the United States, and many productive commercial uses of slag have been developed (e.g., road bed, fill material). However, because slag contains heavy metals at concentrations that are higher than in most soil, questions have been raised regarding the need to evaluate the potential …
