According to the hydrogen price of 2480 $/t, the investment payback period of SE-CLR method based on steel slag is 4.02 years. Under the background of energy saving and emission reduction, the increase of carbon price and hydrogen demand makes the SE-CLR method of hydrogen production based on steel slag more competitive.
This work verifies the feasibility of decreasing the smelting temperature by controlling the slag formation for an energy-saving production. The slag regulation method was upgraded through the coordination of the quaternary basicity [ = R 4 = m(CaO + MgO)/m(SiO 2 +Al 2 O 3)] and FeO content. The melting temperature was decreased, …
31.15 million/ slag powder production line: 3.4 [79] 61: ... Utilization of secondary energy is an important part of the energy saving of iron and steel enterprises. ... Hot air and steam recovery by wind quenching method: 49: 8.0: H2, CO recovery and power generation by chemical method: 88:
Compared with the utilization of traditional steel slag, this process can better utilize the energy and resources contained in steel slag and provides a new method for fully utilizing the waste ...
Finally, heat recovery was carried out under the Nontype flow field in an industrial test. The heat recovery efficiency increased from ~76% and ~78% to ~81% when the steel slag thickness decreased from 400 and 300 to 200 mm, corresponding to reductions in the steel slag mass from 3.96 and 2.97 to 1.98 t with a blower air volume …
This includes four important topics: 1) slag formation, i.e., dissolution of lime in the BOS slag; 2) in situ observation of high-temperature behavior of BOS slags; 3) transient phenomena in BOS slags due to metal …
1. Introduction. The iron and steel industry has gone through a booming prosperity in the past few decades around the world. But it is facing some unprecedented challenges, including growing production demands, high quality ore-supply shortage and increasingly complex burden structure of blast furnace (BF), which will have detrimental …
The paper reports on some experimental results obtained from the production of ceramics containing steel slag and glass cullet from exhaust energy saving lamps mixed in different proportions.
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.
This paper reviews the production, processing, and characteristics of steel slag, and its use as a cementing component in different cementing systems. The …
According to data from the Nippon Slag Association (2016), steel slag production in Japan reached about 14.1 million tons in 2016, and the utilization rate was 98.4%. Of this, 30.9% of the steel slag was used in civil applications, including coastal protection backfills, earth coverings to correct soft ground, road subgrades, and …
1 Background. The "Green deal" strategy of the European Commission from 2019 aims to reduce the net CO 2 emissions to zero by 2050. In order to reach this task breakthrough technologies have to be implemented, as well for the steel as other energy and CO 2 intensive industries. Worldwide steel production is responsible for about 7-9% of all …
The paper reports on some experimental results obtained from the production of ceramics containing steel slag and glass cullet from exhaust energy saving lamps mixed in different proportions. Blending of components was done by attrition milling. Pressed powders were fast fired (50 min, cold to cold) …
Highlights. •. Steel industries are moving towards sustainable utilisation of their waste as co-products. •. Slag sources, properties, and studies of beneficial …
DOI: 10.1021/ACSSUSCHEMENG.1C00081 Corpus ID: 233908012; In-Suit Industrial Tests of the Highly Efficient Recovery of Waste Heat and Reutilization of the Hot Steel Slag @article{Zhang2021InSuitIT, title={In-Suit Industrial Tests of the Highly Efficient Recovery of Waste Heat and Reutilization of the Hot Steel Slag}, author={Tianhua …
How to reduce the energy consumption of the rotary kiln-electric furnace (RKEF) process has become an important issue for the stainless steel industry. The aim of this study is to reduce the energy consumption of ferronickel production from saprolite nickel laterite in the RKEF process. The effects of the slag binary basicity, FeO content, …
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 …
Section snippets Materials and methods. The SS was a by-product of a Basic Oxygen Furnace obtained from the production of a high manganese steel; before the use it was previously naturally weathered for 5 months outside the foundry and transformed into a coarse powder by a mortar in our laboratory.The GC used in the …
The residual heat of steel slag is a promising heat energy resource that can be re-covered. Generally, the temperature of steel slag in the mol-ten state is higher than 1400°C, and the calorific value of the residual heat in steel slag is higher than that of other types of residual heat [1–3]. The released heat could reach 1.6 GJ
In the hot splash method for a slag line; slag is first transported to a hot splash field with a slag pot, and the steel slag is tipped over three to four days after being sprinkled with water to cool it. ... increasing production, saving energy, and achieving highly efficient deironing. At present, the roller press is an effective scheme for ...
Steel is primarily produced using one of two methods: Blast Furnace or Electric Arc Furnace. The blast furnace is the first step in producing steel from iron oxides. The first blast furnaces appeared in the 14th century …
2. Steel-slag can be used to produce energy-saving cement by co-grinding with OPC clinker and blastfurnace slag. In such preparations OPC clinker is about 15-30%, steel-slag around 30-40% and blastfurnace slag is around 40-50%. 3. Producing energy-saving steel-slag cement can save energy, natural resources and cut GHG …
This paper introduces an efficient and comprehensive utilization process of high-temperature molten steel slag. The waste heat energy in the high-temperature …
According to the world steel association, global crude steel production in 2019 reached 1868.8 million tonnes (Mt), and gained a 55.2 Mt increase compared to 2018 (World Steel Association, 2020a).The global production of crude steel from 64 countries was approximately 156.4 Mt in September 2020 (World Steel Association, 2020b).Even …
The growth of electric arc furnace (EAF) steelmaking in North America has occurred mainly in the past 40 years due to low electricity prices, an abundance of steel scrap (especially near large population centers), and the development of mini and macro steel mills based on metal recycling. Scrap availability and price has made steel …
The steel industry, crucial to the global economy, grapples with critical sustainable challenges, including high energy consumption, greenhouse gas emissions, and non-renewable resource utilization, making sustainability imperative for upholding its economic role without compromising the planet or societal well-being. This study …
That is, under the condition of ensuring the efficiency and quality of steel production, a more suitable and cost-effective steel slag treatment process selected to separate the steel slag from the steel production line and to ensure that the steel slag has sufficient activity and stability to realize the secondary use and even to promote the ...
However, a Chinese company has a unique approach to the treatment of steel slag and has taken its place in the international market. More than a month ago, Korea POSCO 300,000t/y slag grinding plant built by Xinxiang Great Wall Machinery Co., Ltd. (hereinafter referred to as "CHAENG") was put into production successfully.
Steel making is a sophisticated process that turns iron ore into steel, involving methods like the Blast Furnace and Electric Arc Furnace to produce various grades of steel. The industry emphasizes sustainability by using additives and recycled materials while ensuring quality through rigorous testing for diverse applications.
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 …
of energy saving and carbon reduction, and promoting the ... treatments steel slag methods [3 –5]. However, these meth-ods exhibit low eciency and poor environmental benets, ... mixed crushing is operated at a pressure of 0.2–0.4 MPa. The steel slag in the hot smothering tank is sprayed into a
Steel making slag is a byproduct from steelmaking processes in which the components of pig iron and steel-scrap are modified in order to produce steel that is highly valued for …
1. Introducition. Metal manufacturing industry has achieved tremendous improvements in its energy efficiency in the past several decades. The specific energy consumption of steel in the U.S., for example, has decreased from 48 to 20 GJ/ton in the period 1960–2000 [1].This accomplishment has been realized by implementing …
1.. IntroductionSteelmaking slag (SS), one of the most common industrial waste, is a by-product of steel production. One ton of steel implies the production of 130–200 kg of slag, depending on the composition of the steel and on the steel production process.Slag often appear as granulated materials containing large …