Iron ore tailings (IOT) and slag sand can be used for manufacturing stabilized geopolymer blocks of good quality and strength. The field tests conducted on geopolymer …
Mineral process wastes, such as metallurgical slags nowadays, are of significant metals and materials resources in the circular economy. The usability of iron-making slag is well established; however, steel slag still needs to be utilized due to various physicochemical constraints. In this context, we have reviewed the global steel slag generation, processing, …
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 comprehensive utilization rate of …
Steel production involves reducing the iron ore, after being sintered or belletized, in a blast furnace to obtain hot metal containing some 4% carbon and smaller quantities of other alloying elements. The slag generated from this process is refereed to as Blast Furnace Slag (BFS). The hot metal is then converted to steel in a basic oxygen furnace where the carbon percentage is …
In this contest, this study focuses on using iron ore tailings and slag sand as a replacement for clay or natural sand for the production of stabilized geopolymer blocks. Also, in this study …
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This article aims to recycle industrial slags in brick manufacturing and investigates the performance of fired clay bricks incorporating different kinds of industrial slags such as …
Until now, relevant scholars have done a lot of works on the environmental assessment of various recycling technologies of steel slag. For instance, Qian et al. (Qian et al., 2021) adopt Bacillus Mucilaginosus (BM) to absorb carbon dioxide to promote the carbonization of dead burned lime and periclasepared with traditional cement, Carbonized steel slag as a …
The main goals of this work were to verify the potential of reuse of steel slag and iron ore tailings as secondary raw materials to produce solid brick and to evaluate whether this …
Utilization of mine wastes as a building material in the construction industry surmises to environmental and sustainable concepts in civil engineering.The potential environmental threat posed by ...
Coal-based direct reduction (CBDR) in iron ore smelting, emerging as a prominent method in the mid-20th century, represents a significant evolution in response to energy crises and environmental concerns, entails the removal of oxygen from solid iron ore to produce solid sponge iron that can be used in electric arc furnace (EAF) steel production (Wang et al., 2021, …
Mendes et al. [43] carried out a technical and environmental assessment of iron ore tailing in fired clay bricks. The addition of iron ore tailings influenced the properties of bricks such as ...
Steel slag is a by-product produced during the conversion of iron ore or scrap iron to steel. ... The heating process is designed according to the environment in a real brick manufacturing process. The samples are heated to 500 °C in 3 h. ... 1000, 1050 and 1100 °C, respectively. Nevertheless, as the slag is the product from the high ...
2.1.1 Iron ore tailings Iron ore tailings (IOT) [6, 8] are the waste materials obtained during the pro-cess of separating the valuable fraction of iron from the iron ore. The different steps involved in this process are crushing, screening, grinding, washing, jigging,
This article investigated the cradle-to-gate environmental impact of granulated blast furnace slag (GBFS) produced in the steel industry and replacement of blast furnace (BF) slag (50%) in place of clinker in Portland slag cement using …
From an environmental point of view, the brick produced with the incorporation of the iron ore tailings was classified as non-inert 12 B.C. Mendes et al. / Construction and Building Materials 227 (2019) 116669 and non-hazardous, both during and after the building useful life, when it returns to the environment as construction waste.
This paper aims to evaluate the effect of incorporating iron ore tailing and steel slag on red ceramic bricks. The procedure for producing the fired bricks includes forming the bricks by compressing them into a mold under a specified …
The volume of tailings discharged worldwide from iron ore smelting processes (i.e., iron ore tailings) has increased dramatically in recent years, and the disposal of this waste poses a substantial ecological threat to soil, and surface and sub-surface water. This threat can be alleviated to a large extent by employing iron ore tailings to fabricate brick building materials, …
Environmental concerns and economic realities demand that slag production in iron and steelmaking processes can be reduced and that slag can be effectively utilized. Discover the world's research ...
With this quest in mind, this study proposes the utilization of mining waste iron ore tailing (IOT) in alkali-activated bricks. For this purpose, six different brick compositions were …
Chemical composition of iron ore tailings. Properties Specific gravity 3.4 Fineness modulus 2.81 Optimum moisture content 13% Bulk density 2.54 Maximum dry density 2.25 Table 2. Physical properties of iron ore tailings. 4 Results Geopolymer Bricks Using Iron Ore Tailings, Slag Sand, Ground Granular Blast Furnace Slag…
Conducting a life cycle assessment (LCA), this study thoroughly evaluated the entire manufacturing process's environmental impact, from source material acquisition and transportation to brick ...
grade than the powdery ore. The iron ore deposits are distributed over the northern, southern and central blocks of Goa. In the Pig Iron Manufacturing, Iron Ore contributes around 40-45% to the total Cost of Raw material & hence the cost of Iron Ore plays a crucial role in the success of pig iron business. By using the low grade iron ore
A supplementary study Kumar et al., incorporating Iron ore tailings and slag sand as geopolymer stabilizers were used for developing fly ash and GGBS binder-based bricks [93]. Another significant ...
Increased mining activity of iron ore has led to the generation of voluminous wastes of various nature, especially during the different stages of its extraction and production.
For the addition of waste into cement materials the waste from iron ore extraction process has been highlighted Thousands of tons of this waste are generated on a daily basis large mining ...
This article aims to recycle industrial slags in brick manufacturing and investigates the performance of fired clay bricks incorporating different kinds of industrial slags such as granulated ...
Ore Waste (IOW) and Iron Ore Tailings (IOT) on a large scale in the process of quarrying and preparing the material ready for iron and steel industry. It is a herculean task for these mining industries to dispose of the mine wastes. To overcome these problems a systematic study is carried out to use IOT in manufacturing bricks which resulted in ...
Mixing iron ore tailings with clay for manufacturing bricks was investigated with the objective of converting the hazardous solid waste into useful products. Blocks were prepared …
The substance utilized for this e®ort comprises Iron Ore Tailings (IOTs), Slag Sand, Fly ash and Ground Granulated Blast Furnace Slag (GGBS). Geopolymer is formed
Iron and steel slags are inevitable byproducts from the process of manufacturing iron and steel products. They can be broadly categorized into the iron and steel slags, in which the steel slag includes basic oxygen furnace slag (BOFS), electric arc furnace slag (EAFS) and ladle refining furnace slag (LFS), as presented in Table 1.Although it varies widely depending …
bricks manufacturing was slightly devel oped from the sift mud process to the dry press process was us ed for the clay that shrinks while drying. Clay mixed was pl ace d in steel moulds and ...
this study focuses on using iron ore tailings and slag sand as a replacement for clay or natural sand for the production of stabilized geopolymer blocks. Also, in this
Therefore, the goal of sustainable construction is to use locally available resources without affecting the environment and its people. Iron ore tailings (IOT) [6], are waste material obtained from the process of smelting of iron. The rapid growth in the surface mines led the production of Iron Ore tailings which remains as overburden.
The manufacturing techniques of magnesia-carbon bricks in China have been documented from raw materials, production (process and facilities) to performance and wear issues in the ladle. Magnesia ...
Utilization of mine wastes as a building material in the construction industry surmises to environmental and sustainable concepts in civil engineering.The potential environmental threat posed by mining wastes, as well as a growing societal awareness of the need to effectively treat mining wastes, has elevated the subject importance.The present research proposes a method …
This study reports the experimental results of compressed unfired blocks made with waste iron ore tailings and slag. It shows the potential of blended binders in stabilizing iron ore …
The common building blocks used are fired clay bricks and cement blocks. However, in case of fired bricks, the manufacturing technique is not environment friendly, since firing process leads to CO 2 emission. Furthermore, cement block manufacturing is dependent on Portland cement, and its manufacturing process also contributes towards CO 2 ...
Magnesite brick, a type of refractory material primarily composed of magnesium oxide (MgO), is widely used in high-temperature industrial applications, particularly in the steelmaking industry. Due…