shaking table high temperature slag iron

The BF slag is emitted at a very high temperature of 1600 Kelvin or above and thus contains a huge amount of waste heat of ∼ 1700 MJ/ton [4]. Yet, the high-temperature BF slag is conventionally treated by the water quenching method, which fails to recover the waste heat, and incurs extra energy and freshwater consumption [5].

Its chemical composition is presented in Table 1. The XRD pattern of the slag is shown in Fig. 1. The Fe 2 O 3 and V 2 O 5 contents of the steel slag were 34.02 wt% and 0.99 wt%, respectively. ... which facilitate the reduction of FeO x into metallic iron under high-temperature melting conditions while separating vanadium into the molten …

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The slag was prepared using an electrical furnace with a maximum temperature of 1600 °C, as shown in Fig. 1.First, the fly ash was dried at 110 °C for 2 h.A 20-mm-diameter and around 10-mm-thick sample pellet was molded under a pressure of 40 MPa by a hydraulic molding press.The experimental temperature was varied from 1300 …

In case of HC FeCr slag, both magnetic and gravity separation resulted in an up-concentrated fraction with a Cr content comparable with commercial primary Cr ores. Especially, when gravity …

The metallurgical waste slag is formed after high temperature reduction of chromite by pyroelectric furnace at 1700 • C which uses carbon as a reducing agent [1]. According to the carbon content ...

The appearance of different diffraction peaks can reflect the change of phase structure of coal gasification slag at high temperature, so as to explore the influence of structural change on NO conversion. Fig. 4 shows the XRD patterns of GS and Fe-GS at room temperature and after high temperature reaction. Coal gasification slag is …

4.2.1 Effect of Al 2 O 3 Content. The effect of Al 2 O 3 on the studied slag (CaO–9 wt% MgO–SiO 2 –Al 2 O 3 –1 wt% TiO 2) at fixed basicity is shown in Fig. 4.3.The increase in temperature can make the melt obtain more energy to overcome the viscous activation energy, and the strengthening of the thermal vibration relaxes the network …

According to the latest data released by the World Iron and Steel Association, global crude steel production increased by 5.3% in 2017, reaching 1.691 billion tons. Globally, the steel industry accounts for 5-6% of global industrial energy consumption, producing about 6% of global carbon dioxide emissions [1].

As a by-product in the steelmaking process, the temperature of molten steel slag can reach 1450–1650 °C and enthalpy can reach 2000 MJ t −1, which is equivalent to 61 kg coal. The waste heat of molten steel slag accounts for 7% of the high-temperature waste heat in the iron and steel industry [5,6,7]. Therefore, the recycling of waste heat ...

The determination of reduction-controlling reaction rate of palm and coconut chars with coke that reacted with iron oxide in steelmaking slag at a high temperature of 1823 K found that the reaction rate of agricultural waste chars was lower than that of coke because lower fixed carbon and lower ash gave less catalytic effect in the reduction ...

With the rising costs of high-activity materials like slag (Han et al. 2017), the focus has shifted to economically viable alternatives such as steel slag (SS) and ceramic powder (CP). SS, a by-product of the iron and steel industry, contributes significantly to China's annual production (Francisca and Glatstein 2020 ; Cui et al. 2021 ...

Application: Tin, tungsten, gold, silver, lead, zinc, tantalum, niobium, titanium, manganese, iron ore, coal, etc. Advantage: Lightweight and corrosion-resistant …

SLAG—IRON AND STEEL. H. V. Oss. Published 2002. Materials Science, Engineering. In the making of crude or pig iron in a blast furnace, iron oxide ores are stripped of oxygen and other impurities by means of high-temperature reactions with carbon reducing agents and fluxes. Most of the impurities and fluxing agents combine to form a liquid ...

Modern blast furnace ironmaking technology has a history of more than 100 years, and the impact of the high-temperature physicochemical properties of blast …

The high Ca content and low quantity of iron oxide makes BF slag suitable for use in slag-cement blends. Air-cooled BF slag is used in road construction as a substitute for stones, aggregates and chips, while the granulated BF slag is used in cement manufacturing which can substitute about 50% of the clinkers in cement manufacture …

The reduction percentage of iron oxide was approximately 82 % under roasting conditions of 1.5 h at 1373 K. Based on these results, a novel scheme for copper slag utilization is proposed that involves chlorination roasting for nonferrous metal removal, reduction roasting for iron oxide reduction, and melting to obtain molten iron and …

1 Introduction. The basic oxygen steelmaking (BOS) process produced over 70% of the global crude steel in 2018, [] generating 100 to 150 kg of slag ("BOS slag") for every tonne of crude steel produced. BOS slag, a product of hot metal element (e.g., Si, Mn, Fe, P) oxidation and flux (e.g., lime, dolomite) dissolution, plays a critical role in the production …

Waste heat recovery from high temperature slags represents the latest potential way to remarkably reduce the energy consumption and CO2 emissions of the steel industry. The molten slags, in the ...

The pyrometallurgical process mainly focuses on the iron and copper content recovery as high-grade magnetite, metallic copper (or matte), or iron-enriched alloys. ... extraction was conducted by contacting aqueous and organic solutions in a 60 mL pear-shaped funnel and mechanical shaking. The concentrations of metal ions in the …

Non-metallic inclusions (NMIs) in steels have been the focus of various experimental studies due to their detrimental character. While isolated processes, such as agglomeration or dissolution, have been well investigated, holistic in-situ views with high-temperature confocal scanning laser microscopy (HT-CSLM) have been rare. In this …

The values of tested samples increased from 1.85 to 7.07, about 3.8 times improvement after comparing the value between raw slag and treated slag. This indicated that the crystalline phases transformed significantly during the calcination at high temperature. Download : Download high-res image (434KB) Download : Download full …

The H-slag and B-slag present moderate adhesion portions of 24.1% and 10.3%, respectively. The high adhesion portion of the T-slag is ascribed to the high TiO 2 content of approximately 15%, which is anticipated to affect the thermophysical properties such as viscosity, thermal conductivity, etc. Download : Download high-res image (247KB)

The samples were cast and compacted on a shaking table in 40 × 40 × 160 ... The red colouration is the effect of iron compounds oxidation. Iron is present mainly in fly ash composition, in oxides with more than 6% of Fe₂O₃. ... to ensure material durability at high temperature, the slag content should be limited. In unblended geopolymers ...

The steel industry is an energy-intensive and CO 2-intensive industry and the greenhouse gas (GHG) emission in the steel industry was more than 2.95 billion tons in 2012, which faces the great challenge of energy saving and CO 2 emission reduction in the context of global warming. The heat recovery from high temperature slags (1450–1650 …

High-temperature molten slag, mainly including blast furnace slag and steel slag, is produced in the iron-making and steel-making process, and its temperature is about 1673 to 2023 K. The typical chemical composition of steel slag is shown in Table I.

Section snippets Material and methods. To facilitate the application of remaining slag in rock wool production, the acidity coefficient (i.e., the ratio of acidic oxide (SiO 2, Al 2 O 3) content to basic oxide (CaO, MgO) content) was adjusted to 1.6–2.0.Steel slag (from Ma Steel Ltd.) was used as an acidity coefficient regulator, and calcium …

They are effective in processing precious and base metal, rare metal and non-metallic minerals. The Shaking Tables have three distinct deck designs available. The course ore deck is designed for recovering particles sized …

PDF | On Nov 18, 2020, Okorie Onuora published High Temperature Rheological Characteristics of Iron and Steel Making Slag and its Waste Heat Recovery-A Review | …

Therefore, to fully understand the role of Ti 4+ in the silicate melts, the effects of TiO 2 content ranging from 20 to 34 mass pct and MgO/CaO content ranging from 0.32 to 0.65 on high-temperature structure of the CaO-SiO 2-TiO 2-MgO-Al 2 O 3 were investigated using Raman spectroscopy. To combine this structural information obtained …

1. Introduction. 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 1.035 billion tons [2], more than half of the global crude steel output (1.9505 billion tons) [3], and the steel slag output exceeded 120 million tons.In contrast, …

The addition of CaO plays a positive role in the water vapor oxidization of fayalite in nickel slag to produce magnetite. A sample of basicity 0.6 with a water vapor flow rate controlled at 50% reacted at 1000°C for 40 min results in a product with an iron recovery ratio of 71.1% and an iron grade of 56.4%.

High alumina slag is widely found in pyrometallurgical extractions of ferronickel, ferrochromium, and platinum group metals. The effects of MgO, Al2O3, and CaO/SiO2 on the sulfur distribution ratio between high-alumina CaO–SiO2–MgO–Al2O3 slag and carbon-saturated iron were investigated. The slag consisted of Al2O3 content …

Pig iron and molten slag accumulate at the hearth of the BF, and the slag is positioned above the pig iron, as its density is lower than iron (Ito et al., 2014). There are some difficulties associated with draining the slag from the BF as it has high viscosity while in the lower temperature zones of the furnace this viscosity increases ( Ito et ...