SLAG
Steel Slag BOF slag, commonly known as steel slag is another waste from Iron & Steel Industry. It has shown potential for use as a raw mix component up to 10% in the manufacture of cement clinker. Steel slag can also replace granulated blast furnace slag up to 10% in the manufacture of Portland Slag Cement. Steel slags are produced at steel …
Review Characteristics of steel slags and their use in cement …
— In China, BOF slag accounts for about 70% of the annual steel slag production (Cheng and Yang, 2010).In the BOF process (Fig. 1), minor steel scrap and a large amount of molten iron from ironmaking as well as fluxes (lime/dolomite) are added into the furnace, and a 99% pure oxygen flow is applied at supersonic speed through a lance …
Hydration superposition effect and mechanism of steel slag powder …
— Steel slag has great potential as a supplementary cementitious material, because its composition is similar to cement and it has a certain cementitious activity after grinding it into micronized powder [[11], [12], [13], [14]].However, the low hydration activity of steel slag compared to cement limits its application [15], [16], [17], and the reasons for …
Creep and fatigue properties of asphalt mastic with steel slag powder
— 1. Introduction. Steel slag is a by-product produced during steel-making process, and its emissions account for approximately 10 %− 15 % of crude steel output [1].With the development of the steel industry in China, the output of steel slag has increased rapidly.
Production, characterisation, utilisation, and beneficial soil
— Slag is a complex co-product engineered by adding flux materials to extract impurities from molten iron and steel during manufacturing (Ilyushechkin et al., 2012, Yang et al., 2018).Slags can be characterised as either an acidic slag, neutral slag, or basic slag.
Comprehensive utilization of steel slag: A review
— A high added value steel slag and slag composite micro powder(SSCM) technology was provided to address the issues of low activity of steel slag and low …
Preparation and Performance Testing of Steel Slag Concrete from Steel
— In this paper, steel slag powder was used to replace part of the cement in road concrete, and group tests were carried out on coarse aggregates with different water–cement (W/C) ratios, different steel slag parameters, and different particle sizes. A sample of 100 mm × 100 mm × 100 mm was prepared and cured for 3 days, 7 days, and …
Effects of Steel Slag Powder Content and Curing …
— Among them, nearly 3 billion tonnes of steel slag are not effectively used, and the damage to the environment cannot be ignored. Steel slag is an industrial solid waste produced during the steel making …
Effects of Steel Slag Powder as A Cementitious Material on …
— The utilization rate of steel slag in China is far behind that of developed countries. The annual output of steel slag is still increasing, resulting in a large amount of accumulation, causing environmental pollution. This paper summarizes and analyzes the relevant research on steel slag powder (SSP) as a cementitious material, studies the …
Flow and Heat Transfer on the Surface of Molten Steel Slag …
— Protective slag is coated on the surface of molten steel during continuous casting, the flow and heat transfer state of the protective slag is a decisive factor affecting the inflow and consumption of liquid slag and is also an important prerequisite for stabilizing and improving the quality of continuous casting billets. Based on the Navier Stokes fluid …
A Review on Environmental Concerns and Technological …
— Considering global steel production of 1878 million tonnes in 2020, the associated slag by-products possess a significant resource of major components like …
Carbon mineralization of steel and iron-making slag: Paving …
— BOF slag can be used as a road construction material, as a substitute for natural aggregates in asphalt mixtures, and as a raw material for cement production. It can also be utilized as a fertilizer in agriculture due to its calcium and magnesium content, which can help improve soil fertility [62], [74], [85]. LF slag can be used as a ...
Experimental Study on Strength Characteristics of …
— Expansive soil, as an unsaturated cohesive soil, is considered a harmful geological soil due to its tendency to expand with water and shrink with loss of water. Especially in the alternating environment between dry and wet (D–W) cycles, it can cause engineering accidents because of its deformation. Steel slag powder (SSP) was used as …
Application of Steel Slag as an Aggregate in Concrete …
— Utilizing treated steel slag as coarse/fine aggregate in concrete production is a high-value solution that can alleviate the worry about resource depletion and solve the …
Waste heat recovery from hot steel slag on the production line
— Waste heat recovery from hot steel slag was determined in a granular bed through the combination of numerical simulation and an industrial test method. First, the effective thermal conductivity of the granular bed was calculated. Then, the unsteady-state model was used to simulate the heat recovery under three different flow fields (O-type, S …
Recycling of iron and steel slag for carbon reduction and …
— 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, …
Ladle Furnace Slag: Synthesis, Properties, and Applications
— Depending on the processing methods during the steel slag production and the weathering of the slag post-production, the elemental composition of the steel slag largely varies. ... orthorhombic γ-polymorph with volume expansion which causes the buildup of high internal stress that disintegrates the slag to a fine powder which makes it ...
Research progress of hydrogen production and CO2 fixation …
— In this work, steel slag not only adsorbed CO 2, but also be used as cement-based building materials. Zhao et al. used steel slag to fix CO 2 and process the carbon-fixed steel slag into building aggregates for application. Therefore, steel slag has great application potential in hydrogen production and CO 2 fixation. 3 HYDROGEN …
Environmental benefit assessment of steel slag utilization …
— This paper first illustrates the production processes, properties, and applications of steel slag, and then summarizes the key findings of the environmental …
Review Steel slag and its applications in cement and …
— Slag from iron and steel plants (steel slags, blast furnace slag, etc.), storage of the ashes of burning coals (bottom ash, fly ash) at thermal power plants, and …
Steel Slag
— The steel slag produced during the primary stage of steel production is referred to as furnace slag or tap slag. This is the major source of steel slag aggregate. After being tapped from the furnace, the molten steel is transferred in a ladle for further refining to remove additional impurities still contained within the steel.
Slag
— Slag is not only required in the smelting process in the furnace, but also indispensable for secondary refining of steel, hot metal pretreatment, and steel continuous casting. The name of "slag" is not precise enough, but it is still being used. Slag that has been melted into a liquid state at high temperature is called dross.
The potential utilization of slag generated from iron- and …
— Slag is the by-product of iron- and steelmaking processes. Normally, around half to one tonne of slag would be generated for yielding one tonne of rolled iron or steel (Lobato et al. 2015).It was reported that the world steel production was 1.9 billion tonnes in 2016, which suggested that at least around 1 billion tonnes of slag is produced during …
Comprehensive utilisation of blast furnace slag
— The use of slag wool can not only reduce the production cost of slag wool, if the liquid blast furnace slag is directly used, the utilisation rate of the sensible heat of blast furnace slag can be more than 80%. A large number of high-temperature molten slag produced in the steel production process, the slag temperature is as high as 1400∼ ...
BOF Steel Slag: Critical Assessment and Integrated Approach for
— During steel production, the impurities in the hot metal react with the fluxes forming the steel slag. Chemical constituents of this steel slag (SS) are relevant to iron/steelmaking or blended cement manufacture. Harmful impurities present in it, however, limit its recycling to these applications. Japan, Europe, and the US consume a significant …
Performance Evaluation of Asphalt Modified with Steel Slag Powder …
— As two kinds of solid wastes, waste tires and steel slag have caused serious threats to the environment. Both waste tire rubber (WTR) and steel slag powder (SSP) can improve the performance of asphalt, while the performance indexes and modification mechanism of modified asphalt are not clear. In this paper, asphalt modified with SSP …
A Comprehensive Review on the Ground Granulated Blast Furnace Slag
— GGBS is a byproduct of steel production commonly used as a cementitious material as it improves the strength and reduces penetrability by increasing the boundary with the aggregate. ... it has been demonstrated that using a composite mineral admixture known as ground-granulated blast-furnace slag-steel slag composite binder can …
Environmental hazard reduction and anti-aging enhancement of steel slag
— 1. Introduction. Steel slag, as a co-product of steel-making procedure, is one of the largest industrial solid wastes. In recent years, the accumulated inventory of steel scrap in China has exceeded 1.1 billion tons, while the integrated utilization rate at roughly 22% (Sun et al., 2022a).Contrary to the massive accumulation of steel scrap, the …
Research on the Properties of Steel Slag with Different …
— To promote the resource utilization of steel slag and improve the production process of steel slag in steelmaking plants, this research studied the characteristics of three different processed steel slags from four steelmaking plants. The physical and mechanical characteristics and volume stability of steel slags were analyzed through density, water …
Effects of Steel Slag Powder as A Cementitious Material on
— It is explicitly pointed out that the utilization rate of steel slag is still low, resulting in the occupation of a large number of land resources and ecological and …
Comprehensive Analysis of Steel Slag as Aggregate for Road …
— Around 70% of the world's steel production depends on the blast furnace process (integral route), as the availability of scrap limits electric arc furnace production to 30% of global demand . In the BOF process, the amount of BOF slag produced ranges between 0.1 and 0.2 tonnes per tonne of steel produced [ 3, 4 ].
Performance evaluation of bamboo leaf ash and steel slag powder …
— Asphaltic concrete with steel slag powder, bamboo leaf ash and quarry dustvas fillers were compared. • The performance of the replaced asphaltic concrete was evaluated using Marshal stability, ITS, cantabro test, and so on. • Steel slag powder improved asphaltic concrete performed better than the control and bamboo leaf. •