Utilization of Linz–Donawitz slag from steel industry for waste
The Linz–Donawitz (LD) slag is an industrial waste generated in Linz–Donawitz process of steel making. It is not gaining importance in construction industry because of its volume instability, and presence of excessive phosphorous and sulphur content. Suitable accelerated ageing and masking of harmful materials can improve the …
Red Mud: From Industrial Waste to a Flux for …
This study highlights the potential of red mud/bauxite residue, an industrial waste product generated during alumina extraction as a flux for iron and steelmaking. The thermodynamic feasibility of using red mud as a flux in the presence of different reducing agents is evaluated. Potential approaches to decarbonize iron and steel production …
Reaction Process of Chromium Slag Reduced by Industrial Waste …
M, a particular industrial waste, was selected to detoxify chromium slag at a high temperature. The carbon remaining in M reduced Cr (VI) of Na 2 CrO 4 borne in the chromium slag to Cr (III) in the solid phase reaction, and its thermodynamics and kinetics were studied. The reduction process of Na 2 CrO 4 by carbon produced CO, which was …
Comprehensive utilization of steel slag: A review
Steel slag, the main solid waste in the steel-making process, is produced more than 120 million tons annually in China. Most of the steel slag was stored in the …
Critical review of applications of iron and steel slags for …
The iron and steel industry is exploring methods to utilize CO 2 sequestration capacity of steel slag in a technologically viable manner to control its high CO 2 …
IRON AND STEEL SLAG
production data for slag were not available, but iron slag production from blast furnaces was estimated to be 25% to 30% of crude (pig) iron production, and steel furnace slag production was estimated to be 10% to 15% of raw steel production. In 2023, world iron slag production was estimated to be between 330 million and 390 million tons, and
Industrial uses of slag (the use and re-use of iron and steelmaking
During ironmaking as well as during steelmaking, significant amounts of slag are produced. Two decades ago, more than 13 million tonne (mt) of blast furnace slag and 4 mt of steelmaking slag per annum were produced in the USA alone. It is therefore not surprising that many attempts have been made to re-use iron and steelmaking slags.
Sustainable Approaches for LD Slag Waste Management in …
Reduce, reuse, and recycle are important techniques for waste management. These become significant for improving environmental and economic condition of industries. Integrated steel industries are generating huge amounts of steel slag as waste through the blast furnace and Linz–Donawitz (LD) process. Presently, …
The recycling and reuse of steelmaking slags — A review
The composites prepared from blast furnace slag (BFS) and steel slag (SS) demonstrated the capacity to capture a maximum of 2.77 mol/kg of CO 2 from the simulated flowing flue gas at 75 °C, and the energy required could be sourced from steelmaking waste heat. Comprehensive characterizations revealed the evolution of phase …
Basics of slag production
Slags from the Iron and Steel Industry. Background With world steel production now well over a billion tonnes per year, the slag that arises from some of the processes involved is a major resource. Traditionally it has been used mainly as an aggregate but for some types there are other applications, such as a raw material for …
Chapter 6 Iron and steel slags: from wastes to by-products …
Worldwide about 620 mio. tons of different slags are produced yearly as byproducts of iron and steel production. Their utilisation for different purposes, but mainly in the …
Recent applications of steel slag in construction industry
1.3 Utilization of steel slag. Utilization of steel slag in various industries as raw material can provide environmental sustainability and therefore ensure the reduction in exploitation of natural resources (Yüksel, 2017).Toward the sustainable environment, the use of industrial waste can minimize the disposal of wastes to the environment which helps the …
Exploiting the Molten Slag to Decarbonize Iron and Steel Industry …
Waste heat recovery from molten blast furnace slag at ≈1500 °C represents new opportunities for slag valorization. This is now gaining the spotlight but still remains a grand challenge in the iron and steel industry (ISI).
The potential utilization of slag generated from iron- and
In this article, the potential application of iron- and steelmaking slag has been reviewed, which included the slag utilization in construction as cement and sand, …
Carbon mineralization of steel and iron-making slag: Paving …
Carbon mineralization technology has emerged as a promising method for permanently sequestering CO 2 by transforming it into a thermodynamically stable solid carbonate material. Recently, alkaline industrial waste, particularly from steel and iron-making processes, has been identified as a proper feedstock due to its high potential for …
Steel slag in China: Treatment, recycling, and management
The Code for the Design of Environmental Protection of the Iron and Steel Industry (GB 50406-2007), Steel Slag Treatment Technology Standard (GB/T 29514-2013), and Standard for Pollution on the Storage and Disposal Site for General Industrial Solid Wastes (GB 18599-2001) stipulate the rules for the treatment, storage, and …
Application of iron and steel slags in mitigating greenhouse …
BFS and SS are the main by-products in the iron-and-steel smelting process, producing a considerable amount of the output, and they have high contents of CaO and MgO, which can be used for CO 2 capture and fixation. Using BFS and SS as raw materials for mineral carbon sequestration realizes "treating waste with waste," which is …
Sustainable Approaches for LD Slag Waste Management in …
The basic oxygen furnace (BOF) steelmaking slag also known as LD slag, is one of the important industrial byproducts generated in the steelmaking process or pig …
Waste slags as sustainable construction materials: a …
Cupola slag is a cast iron (CI) manufacturing waste product that forms in cupola furnaces. Metal working produces slag as a by-product. The EAF technology is the most widely employed in modern integrated iron facilities for steel and iron production [[5], [6], [7], [8]].Cupola furnaces generate waste at a rate of (5–7)% during the production of …
Industrial uses of slag (the use and re-use of iron and …
Steelmaking slag volumes have been reduced on commercial scale from about 140 kg t −1 steel to 60 kg t −1 steel. Moreover, model predictions have shown that in principle, all …
Legacy iron and steel wastes in the UK: Extent, resource …
The total extent of iron and steel slag identified in Fig. 1 and Table 4 suggested that approximately 38% of iron and steelmaking slag remains in landfill, based on previous estimates of total slag production between 1875 and 2008 in the UK (Renforth et al., 2011). The regional extent of slag stockpiles is explained by a number of factors ...
Utilization of steel slag from industrial waste for ionizing …
On the other hand, the steel slag waste produced is 10–15% per ton of steel production [43], [46]. In this manner, the annual volume of steel slag waste might reach over 300 billion tons. Therefore, recycling and utilizing steel slag waste is essential to lessen its detrimental effects on individuals and the environment.
Electrocoagulation applied for textile wastewater oxidation using iron
This proposal uses a waste from the metal-mechanical industry as an electrode in the electrocoagulation process, reducing input costs, thus minimizing the disposal of this solid waste, iron slag, in industrial landfills. It becomes an economic advantage for the industries concerned and the environment.
An Overview of Utilization of Blast Furnace and Steelmaking Slag …
Fig. 1. Schematic illustration of pig iron and slag production process in a blast furnace. 518 Dervis Ozkan et al. / Materials Today: Proceedings 11 (2019) 516â€"525 3. Utilization of Slag Reutilization of industrial waste slags as industrial by-products through their recycling depends greatly on the slag properties and the heat treatment ...
Recent trends in slag management & utilization in the steel industry
Due to its high disposal cost and the positive features of steel slag, many countries have recognized it as a useful construction material rather than an industrial waste. Reusing steel slag can ...
A review of use of metallurgical slag for its carbonation
The main types of slag produced in the iron and steel industry are blast furnace slag (iron smelting slag) and ... processes such as mining, transportation, and grinding, which increases cost and energy consumption. By utilizing steel slag as industrial solid waste, these processes can be eliminated while high-value-added products can …
Use of waste copper slag, a sustainable material
The utilization of solid waste is the challenge for the civil and environmental engineers to utilize the waste from different industry to excel the sustainable development, and in the same time, it is matching with the cost concern of the present materials. Copper slag is a by-product obtained during smelting and refining of copper. The waste copper …
Comprehensive Utilization Technology of Steel Slag
Steel slag is the waste generated in the steelmaking process and includes ferric oxide and the impurities of some infusible matters. ... breaking, magnetic separation, and purification, the metal recovery rate is over 90%. The total iron grade of recovered waste slag steel is over 90%, and the total iron grade of iron powder is greater than …
An overview of utilization of slag and sludge from steel industries
The results obtained could be useful for the application of granulated slag for the Pb-ions removal from industrial waste (Dimitrova and ... metal with a phosphorus content of 0.09–0.16% was treated in a ladle with a dephosphorization agent consisting of LD slag and iron oxide or lime and iron oxide, and the phosphorus content of hot metal ...