Sharma, Abhishek and Rai, Nandani (2010) Effect of burnt lime addition on sintering of iron ore fines. In: Proceedings of the XI International Seminar on Mineral Processing Technology (MPT-2010), Dec 2010, NML Jamshedpur, India.
Parameters affecting sintering Iron ore size: The granulometry of iron ore fines, used in sintering, has a great influence on sinter plant performance. Laboratory Experiments were conducted with different granulometry of iron ore fines to assess its influence on sinter quality and productivity. when we reduce iron ore size then …
Iron ore lump and sinter fines are examples of DSOs, which are mined predominantly from areas such as Australia's Pilbara and Brazil's Carajas regions, where geological processes have led to iron content levels of between 55% and 65%. These ore types require little processing beyond
The iron ore production has significantly expanded in recent years, owing to increasing steel demands in developing countries. However, the content of iron in ore deposits has deteriorated and low-grade iron ore has been processed. The fines resulting from the concentration process must be agglomerated for use in iron and steelmaking. …
Iron ore containing BaSO4 may have a series of effects on the quality of the sinter and performance of the blast furnace. Thus, the effect mechanism of BaSO4 (0–6.0 mass%) on the compressive strength, mineral composition, and microstructure of the sinter was investigated. The experimental results show that the compressive strength of the …
The sintering process begins with preparation of a sinter mixture consisting of iron ore fines, fluxes, solid fuel (called bonding agents in Japan) such as coke breeze, and return fines from the sinter plant as well as recycled ferruginous materials from downstream iron and steelmaking processes. After being mixed in a rotating drum, …
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 …
Sintering is an agglomeration process that fuses iron ore fines, fluxes, recycled products, slag-forming elements and coke. The purpose of sintering is to …
Ore 2 being a concentrate, was very fine with almost passing 0.15 mm, and is therefore expected to fully contribute to adhering fines during granulating and sintering. Ore 1 is characterised by a typical size distribution of iron ore sinter fines containing about 50.3% −1 mm and 23.3% −0.15 mm materials.
The sintering process begins with the preparation of a sinter mixture consisting of iron ore fines, fluxes, solid fuel (called bonding agents in Japan) such as coke breeze, and …
For manganese ore fines sintering, it is generally believed that the longer the maximum temperature (T max > 1200 °C) ... The maximum temperature of iron ore sintering combustion zone is generally 1200–1400 °C under the condition of 3.3%–5.0% coke dosage [41, 42]. However, the coke dosage range for manganese ore fines …
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). The purpose of the sintering process is manufacturing a product with the …
Sintering is a thermal agglomeration process that is applied to a mixture of iron ore fines, recycled ironmaking products, fluxes, …
The formation of liquid phase is of great significance for improving the quality of high basicity sinter which is widely used as raw materials in blast furnace ironmaking. As an important component of gangue in iron ore, alumina affects the amount of liquid phase by influencing the formation of calcium ferrites‐bonding phase. In this …
Sintering process of iron ore fines is a metallurgical process which is carried out on a sintering machine. The strand width and length depends on the capacity of the machine and varies for each steel plant. It is basically an agglomeration process achieved through combustion. The process energy, of the order of 360 million calories to 480 ...
For iron ore fines OA–OD, the existing states of gangue components and LOI content may be different. During the actual sintering, the two factors may affect the reactivity of iron ore fines and dynamic conditions of solid-state reactions, and further the formation temperature of the liquid [11, 22]. It is a limitation of FactSage that the ...
Iron ore fines are the main source for sinter, and the chemical composition of the iron ore fines, together with the thermal conditions that blends are subjected to, plays an important role in forming the primary melt during …
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 …
The reaction surface area of iron ore fines is high which results into higher reaction rates. But, the formation of higher concentrations of melt result into decrease in the melt fluidity. ... The size of iron ore affects the sintering properties. An increase in the size of iron ore promotes the productivity of sinter, but can reduce the ...
The process of iron ore sintering involved several key steps: proportioning, mixing, ignition, sintering, crushing, cooling and screening. As shown in Fig. 1, the process began with the comprehensive formulation of iron ore fines, coke fines, limestone, dolomite and return fines in compliance with specified proportions. This mixture was …
Moreover, the conventional iron making unit, i.e. blast furnace requires the raw material in the form of iron oxide with a size range of 10–120 mm. Sintering is the oldest agglomerate thermal process using iron ore mineral fines of 0.5–8 mm, along with the reductant, fluxes, and other byproducts of the iron and steel industry operated ...
ore, sinter and pellets Detertnination of relative reduci-bility of iron oxides : lump ore, sinter and pellets Methods of determining particle size distribution of iron ore fines 3 TEST SAMPLE 3.1 The raw materials for test sample for sintering tests shall have the followinssize ranges: Iron ore. iron bearing tnaterials and other materials,
The sinter plant that converts the iron ore fines into a desirable blast furnace feed, offers an avenue for recycling wastes. One of the several wastes that are produced at an iron and steel plant is the undersized pellet fines, which cannot be directly used in iron making. The present study evaluated the influence of these pellet fines on …
There is a negative correlation between the tumble index (TI) of sinter products and LAT of iron ore fines. Iron ore fines have better sintering performance within the appropriate range of IFL between 0.17 and 0.88. The correlativity between SBP, percentage of formed SFCA (PFS) and the sintering performance of iron ore fines is complex.
Calcium silicate is the undesirable bonding phase in sinter with relatively high melting point and poor reducibility, while the formation mechanism in sinter is ambiguous. Herein, the phase transformation, phase quantification, and morphology evolution of calcium silicate and calcium ferrite in CaO-SiO 2 -Fe 2 O 3 -Al 2 O 3 …
The production of high-quality sinter is crucial for assuring consistent, stable furnace productivity with a low consumption of reductants. Sinter quality begins with the mined iron ore and the proper selection …
2. a screened size of 10 mm to 30 mm, can withstand pressure and temperature conditions in the blast furnace. Principle of sintering Sintering is a thermal process (carried out at 1300 deg C to …
The ore size ranging in between 0.5 mm and 8 mm along with coke breeze fines, flux fines, other iron concentrates and suitable binders are generally used for sinter preparation which is a thermal ...
The selective granulation process is a new sintering process for high alumina iron ore fines, and can eliminate the adverse effects of 'hard to sinter' or 'unsuitable – for ironmaking' ores.
Table 1 gives the chemical compositions of raw materials, including iron ore materials, fluxes, coke breeze and return fines (<5 mm). Iron ore materials characterizing high iron content and low impurities such as SiO 2, MgO, Al 2 O 3, and so on.Quicklime and dolomite were Ca- and/or -Mg contained fluxes used to adjust the basicity and MgO …
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 part of flux (limestone and …
Nowadays, as the demand for iron ore increases together with the depletion of high grade ore deposits, mining companies have been investing to produce iron ore concentrates, such as pellet feeds (95% lower than 0.15 mm) with low level of contaminants.It is well-known that its lower particle size negatively affects the …
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 …
The iron ore sintering process aims to achieve fine ore consolidation via cohesive action of the binding phase to attain a high-strength sinter. Thus, the amount of the binding phase generated between the fluxes and iron ore under high-temperature conditions is considered as an important parameter.
The sintering process begins with the preparation of a sinter mixture consisting of iron ore fines, fluxes, solid fuel (called bonding agents in Japan) such as coke breeze, and return fines from the sinter plant and blast furnace as well as recycled ferruginous materials from downstream iron and steelmaking processes. After being mixed in a ...
