Sinter feed 0.15 – 6.3 Agglomeration by sintering to be fed in blast furnaces. Pellet feed <0.15 Agglomeration by pelletizing to be fed to blast furnace and direct reduction. ... Iron Ores and ...

It can be seen from Tables 1 and 2 that the blend with high iron grade has a high content of FeO (14.51 wt.%) because it consisted of 70 wt.% magnetite concentrate and 30 wt.% fine ore. The coke breeze has high fixed carbon content (83.37 wt.%) and low volatile matter content (1.57 wt.%). 2.2 Methods. The double-layer sintering process is …

According to the U.S. Environmental Protection Agency, the sintering process converts fine-sized raw materials, including iron ore, …

Oxidized iron ores with a granulometry within 10 and 120 mm were loaded into the blast furnace until the fifties of the last century (Peacey and Davenport 1986). ... 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 (coke). ...

Fernández-González et al. : Iron ore sintering: Environment, ... Iron ores with ≥60% of iron and particle size in the range 0.5–8 mm. Iron ores with particle size >8 mm can be directly fed into the blast furnace or any other reduction furnace reactor, and iron ores with particle size <0.5 mm must be processed in pelletizing plants. ...

Super-high bed sintering process is an important development direction of iron ore sintering for its lower emission and higher yield. However, there is a lack of deep understanding of the uneven quality of super-high bed sintering products, and the deterioration of reduction disintegration performance, the thickening of hearth layer and …

Iron ore sintering. L. Lu, O. Ishiyama, in Iron Ore, 2015. 14.5 Conclusions. Sintering is the most economic and widely used agglomeration process to prepare iron ore fines for blast furnace use. Compared with pellets, production of sinter is cheaper, and compared with lump ore, fluxed sinter is often more reducible with better softening ...

Abstract Heat transfer during iron ore sintering has not been given due consideration since the important concepts were developed. Convective heat transfer during sintering is extremely important as it determines the flame-front speed and, consequently, productivity and sinter quality. Concepts developed in chemical engineering heat transfer …

To ascertain the problems of super-high bed sintering, ten sintering machines with the areas of 265, 280, 360, 550 and 660 m2and bed depth above 900 mm were sampled and analyzed. The results showed that problems were mainly shown in the unevenness of chemical composition, macrostructure, mechanical strength and metallurgical performance.

In order to obtain good sintering performance, it is important to understand sintering properties of iron ores. Sintering properties including chemical composition, granulation and high-temperature behaviors of ores from China, Brazil and Australia. Furthermore, several indices were defined to evaluate sintering properties of iron ores. …

In this study, a sintering test of high-alumina limonite from Indonesia, matched with an appropriate magnetite concentration, is performed. The sintering yield and quality index are effectively improved by optimizing the ore matching and regulating the basicity. For the optimal coke dosage of 5.8% and basicity of 1.8, the tumbling index of …

Sintering is the most economic and widely used agglomeration process to prepare iron ore fines for blast furnace use. Compared with pellets, production of …

Low-temperature (< 1300 °C) iron ore sinter is an agglomerate of unmelted and partially melted nuclei particles (+ 1 mm) and a matrix bonding phase produced from the melting …

residual biomass as a substitutional fuel in the iron ore sintering process. Such an approach allows to. implement circular economy and industrial symbiosis to the iron and steel branches. The ...

To investigate the feasibility of co-sintering of fluxed iron ore with magnetite concentrates, the mineralogical properties of a novel fluxed iron ore were studied using particle size analysis, microscopic morphology characterization, and X-ray diffraction Rietveld analysis. Following that, the experiments for granulation performance and basic …

The chemical composition of iron ore fines, together with the thermal concitions that sinter blends are subjected to, plays an important role in forming the primary melt during the sintering ...

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 part of flux (limestone and dolomite) …

The iron ores with high SiO 2 content or high crystal water content should be reasonably used with other iron ores due to their bad sintering properties. 2.2 Experimental methods. Pure CaO and iron ores were dried at 105 °C for 3 h and ground to a size of less than 147 μm.

Sintering basic characteristics of fourteen iron ores were comprehensively evaluated using micro-sinter and grey relational analysis methods. The results show that …

As is well known, high-temperature characteristics of iron ores are identified as the basic indexes to evaluate the impact of iron ore properties on the sintering process as well as the output and ...

One of the main sources of dust-bearing emissions in the metallurgical industry is the sintering machine. An acoustic field was formed during the initial stage of heat treatment of a sintering-machine charge by using an acoustic radiator in the form of a Hartmann whistle installed in the vacuum chambers of the machine. The acoustic field …

The moisture of iron ores means the water content held in the iron ores of unit mass, which is a critical parameter for granule formation in a sintering process.

The high-temperature characteristics of iron ores play important roles in optimizing ore proportion of sintering, which are tested by using iron-ore fines and analytical reagent CaO as raw materials. Two calculation methods of CaO addition amount based on binary basicity (basicity method) and n(Fe2O3)/n(CaO) (mole ratio method), …

To summarise Iron ores with fine crystal size coupled with low degree of hydration favours high productivity and low coke rate in sintering. Iron ores with medium crystal size and very low degree of hydration favours sinter tumbling strength and RDI.In another study carried out by Okazaki et al. [8] it was observed that in Indian ore there were ...

The sintering process, depicted in Figure 1, involves the application of heat to fine iron ore particles, transforming them into coarser grains [16]. Firstly, various raw materials, including iron ...

DOI: 10.1007/s42243-023-01117-x Corpus ID: 264796371; Super-high bed sintering for iron ores: inhomogeneous phenomena and its mechanism during mineralizing @article{Liu2023SuperhighBS, title={Super-high bed sintering for iron ores: inhomogeneous phenomena and its mechanism during mineralizing}, author={Hui-bo Liu …

The sintering process is an intricate system with a protracted process flow. The steps in the manufacturing line are primarily composed of the ingredients and mixing process, the sintering operation process, and the treatment of the sintered ore [39, 40].2.2 Important parameters and characteristics of sintering process. As shown in Fig. 2, all …

iron ores and other non-traditional ferrous materials. The sintering performance of a millipot. was examined across a range of different operational conditions (coke rate and suction pressure ...

The emissions of greenhouse gas was studied in sintering of iron ores by KM9106 flue gas analyzer. It indicates that the emission of COx reveals the coke combustion state during sintering, where ...

Iron ores always contain several forms of alumina, which may have different effect on sintering performance. In this paper, sinter pot tests were systematically conducted with various alumina types and contents by means of alumina additives substituting for the corresponding types of alumina, and the relevant action mechanism …

However, for a practical sintering process, enterprises commonly need to use a variety of iron ores to maintain the SiO2 content of the mixed ore in a certain range (approximately 4.5~5.5 wt%) in ...

Ore A has goethite[FeO(OH)] as the main phase and contains 0.06 wt pct sulfur. But Ore B has Fe 2 O 3 as the main phase and contains 0.03 wt pct of sulfur. In the sinter mix condition, ores A and B were mixed in the weight ratio of 8 to 2, which simulated the use of various iron ores mixed in the actual sintering process.

Abstract. This work presents the results of bench calcination and sintering studies conducted on an iron ore sample from Iron Quadrangle, Brazil with high goethite content. The natural samples and the products of calcination and sintering were characterised by inductively coupled plasma optical emission spectroscopy (OES/ICP), X …

In the sintering of iron ores, the partial substitution of anthracite for coke breeze has been considered to be an effective way of reducing pollutant emissions and production cost. In this study ...

Iron-rich (65 to 70 pct total Fe) mill scale generated during processing by steel mills can be recycled by using it as a ferrous raw material in the sintering process. The effect of mill scale addition on the phase formation of sintered specimens from an industrial sinter blend containing 0 to 15 wt pct mill scale was examined, and the mineral …