Clean recycle and utilization of hazardous iron-bearing waste in iron
During sintering process, iron ore fines, recycled iron-bearing materials (dusts and slags), fluxes (dolomite, limestone, etc.), and fossil fuels, such as coke breeze and anthracite, are thoroughly mixed and agglomerated into lump-like sinter under about 1300 °C provided by the combustion of fossil fuels [10].
sintering iron ore flowchart
PDF Iron ore sintering Part 1 Theory and practice of Sintering Wikipedia. Sintering is a process by which a mixture of iron ores fl uxes and coke is agglomerated in a sinter plant to manufacture a sinter product of a suitable composition quality and granulometry to be Sintering is the process of compacting and forming a solid mass of material by heat 100 …
(PDF) Iron Ore Sintering: Process
Sintering is a thermal agglomeration process that is applied to a mixture of iron ore fines, recycled ironmaking products, fluxes, slag-forming agents and solid fuel …
Synergistic conversion of iron ore sintering dust and waste …
The sintering dust acted as a catalyst and oxygen carrier to support the biochar conversion to produce more CO and CH 4, while the biochar acted as a reducing agent to reduce the iron oxides in the sintering dust to metallic iron. The gasification and reduction were coupled and promoted by each other at 1000 °C for 60 min with 1.2 mol …
Combustion mechanism of benzene in iron ore sintering …
The iron ore sintering process is the main source of VOCs emission in the iron and steel industry, and its VOCs emission accounts for about 69.6% . The organic compounds in the solid fuel and the oil components from the raw materials such as rolling oily sludge are pyrolyzed in the preheating layer (150–900 °C) to produce VOCs [ 9, 10 ].
Fundamental study on iron ore sintering new process of …
It is of great significance for cleaner production to substitute bio-energy for fossil fuels in iron ore sintering. However, with the replacement ratio increasing, the consistency of heat front and flame front is broken, and the thermal utilizing efficiency of fuel is reduced, which results in the decrease of yield and tumble index of sinter. Circulating …
Comprehensive evaluation of hydrogen-rich energy application in iron
The iron ore sintering, as an essential raw material treatment process of blast furnace, mainly uses coke or anthracite as a heat source and emit a large amount of greenhouse gas (Annual Conference on Sintering & Pelletizing Technology, 2022), which is not consistent with the current environmental protection requirements.
Sintering
A short description of the sintering process is also presented in Fernández--González et al. (2018). Figure 2.1 shows the main parts of an iron ore sintering plant (Dwight–Lloyd machine). Despite at first instance the agglomeration of ores has imposed as a process required in the iron extractive metallurgy, this process has changed with the
Iron Ore Sintering: Process
Read this article. Sintering is a thermal agglomeration process that is applied to a mixture of iron ore fines, recycled ironmaking products, fluxes, slag …
Basics of Iron Ore Sintering | SpringerLink
First Online: 15 October 2023. 229 Accesses. Abstract. In iron making process, sintering of iron ore fines is an integral step to utilize not only the ore fines but also to introduce a …
Combustion behavior and influence mechanism of CO on iron ore sintering …
The properties of circulating gas have a significant effect on sintering with flue gas recirculation, and the influence of CO in sintering process was investigated. The results show that the post-combustion of CO conducts in sinter zone when flue gas passes through the sintering bed, which releases much heat and reduces the consumption of …
Iron ore sintering
Like other sintering processes, iron ore sintering converts iron ore fines of often − 8 mm sizing into larger agglomerates, namely, sinter, between 5 and 50 mm particle size, which possess the physical and metallurgical characteristics and gas permeability required for efficient blast furnace operation.As shown in Figure 14.1, iron ore sintering …
Sintering Iron Ore Flowchart
Sintering Iron Ore Flowchart SINTERING MECHANISM OF MAGNETITE PELLETS DURING . On the other hand, sinteringin iron ores is intended to impart enough strength and porosity making them suitableinto the pellet to withstand the subsequent handling and operations in iron making furnaces. understanding the Thus, mechanisms of sintering …
Material and energy flows of the iron and steel
1. Introduction. As the second largest energy user in the global industrial sectors [1], the iron and steel industry is highly dependent on fossil fuels [2] and releases massive amounts of environmentally harmful substances [3].With rapid urbanization and industrialization, the demand for steel has increased over the last several decades …
A new disposal method for white mud: Replacing limestone in iron ore …
The pulp production process generates a CaCO 3-rich solid waste known as white mud (WM), and its improper disposal is a cause for global concern.The present study investigates the composition, microstructure, and thermal decomposition characteristics of WM and proposes a strategy for replacing limestone with WM for iron ore sintering.
Forecasting of iron ore sintering quality index: A latent …
In the iron ore sintering process, Liu et al. (2020a), (2020b) provided an accurate prediction model for the sinter components based on the data preprocessing of noise filtering, feature selection and the LSTM model. ... Flow chart of GRU-PLS model. In the PLS model, the inner structure for each pair of latent variables (LVs) is rebuilt by the ...
A Case Study of Sintering with Low Silica Iron Ore
The low-silica and low basicity sintering is an effective measure for improving iron grade of sinter and reducing the slag amount of ironmaking and steelmaking. Sintering of the mixture at basicity (1.9, 1.8, and 1.7) and SiO 2 content (5.0, 4.9, 4.8, 4.7, and 4.6) were conducted in a sintering pot, and the microstructures of typical sinters ...
Flow chart showing the formation of phases during sintering of iron ore
The composition of iron ore sinter according to Patrick and Lovel (2001) and Van den Berg (2008) includes as main phases hematite (Fe 2 O 3 ), magnetite (Fe 3 O 4 ), ferrites [mostly silico ...
Advances in Sintering and Pellet Technology
Amongst various processes used in agglomeration, sintering and pelletization are widely used in the iron ore industries. About 70% of the blast furnace feed is reporting from the sintering processes. The objective of iron ore agglomeration is to generate a suitable product of granules in terms of thermal, mechanical, physical, and …
Effect of biochar substitution on iron ore sintering …
In the iron ore sintering field, the yield, productivity and tumbler index (TI) is commonly used to characterize the sinter quality [19]. The yield (%) is the proportion of the mass of the sinter with a size greater than 5 mm after crushing and screening minus 1 kg ore at the bottom of the hearth layer to the total mass of the sinter.
Prediction of sinter yield and strength in iron ore sintering …
The iron ore sintering process was simulated and computational domain was the same as the configuration of a sinter pot as shown in Fig. 1. Entrance of the sinter pot was defined as a velocity inlet. The magnitude of velocity was obtained from the experimental gas-flow rate [7]. The bottom of the sinter pot was set to be pressure outlet …
Recent advances in iron ore sintering
Sintering is the most economic and widely used agglomeration process to prepare iron ore fines for blast furnace use. Owing to the depleting reserves of …
Effect of bed shrinkage on iron ore sintering process
Iron ore sintering entails high energy consumption and also produces significant pollution, responsible for the highest share of CO 2 emission, as well as SO 2 and NOx emissions, in the iron and steel production processes. 5 The SO 2 and NO X emissions from this process account for ∼70% and ∼40% of the total iron and steel …
Proposing a machine learning approach to analyze and …
The basic high-temperature properties of iron ore play a crucial role in optimizing sintering and ore blending, but the testing process for these properties is complex and has significant lag time, which cannot meet the actual needs of ore blending. A prediction model for the basic high-temperature properties of iron ore fines was thus …
Iron Ore Sintering: Process
Sintering is a thermal agglomeration process (1300-1480°C, Eisele and Kawatra, 2003) of a mixture of iron ore mineral fines (0.5-8 mm), by-products of the iron and steelmaking industry, fluxes ...
Co-treating MSWI fly ash in iron ore sintering process: …
Process flow chart of co-treatment of MSWI fly ash in iron ore sintering process. 4. Conclusions. MSWI-FA contained a large number of PCDD/Fs and alkali heavy metals, which seriously endangered the environment and human health. This paper studied the co-treatment of MSWI-FA by iron ore sintering, and revealed the emission law of …
Disposal of zinc extraction residues via iron ore sintering
The iron ore sintering process has the capability to handle and utilize complex raw materials, allowing for the reasonable utilization of zinc extraction residue. The addition of zinc extractant has been found to improve the sintering index, metallurgical properties, and gaseous pollutant emissions without significant negative effects. ...
Application of deep learning in iron ore sintering process: a …
Process flowchart of iron ore sintering. The common belt sintering machine air extraction sintering process is top-down, and the main chemical reactions …
sintering iron ore flowchart
Flow diagram of iron ore sintering process [13] Sintering is a process of agglomeration of iron ore fines, fluxes, recycled products, slagforming elements and coke with the purpose of achieving an agglomerated product with the suitableThe formation of silicoferrite of calcium and aluminum (SFCA) and SFCAI iron ore sinter phases during heating and …
Iron ore mining and dressing
The flow chart shows the basic steps of how iron ore is used to produce semi-finished products of steel. The individual process steps are explained in more detail in the following articles. Figure: From iron ore to steel (flow chart) Steel is extracted from iron ores (mainly found in sedimentary rocks) and is also known as ore smelting.