Ore-blending optimization for Canadian iron concentrate during iron ore
The results indicated that when high-phosphorus iron ore concentrates containing 54.92 mass pct iron and 0.76 mass pct phosphorus were directly processed through acid leaching, iron ore ...
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Ore Sintering
Iron ore sintering is a material preparation process employed worldwide in the production of iron and steel. According to statistical data on pollution, sintering …
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Effect of ore types on high temperature sintering …
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.
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Effect of concentrate and micropellet additions on iron ore sinter …
The iron ore sintering process needs to be optimised to decrease its energy intensity and emissions of carbon and atmospheric pollutants, while continuing to produce sinter of sufficient quality ...
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Basics of Iron Ore Sintering | SpringerLink
The iron ore fines and concentrate cannot be directly utilized in blast furnace, and therefore, its agglomeration i.e. enlargement of particle size is necessary …
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Improvement in the permeability of sintering beds by …
Granulation and packing tests of iron ore blend containing concentrates are conducted. ... The typical iron ore sintering process supplies the main ferrous charge for blast furnaces in most steel mills. During sintering, first the sinter raw materials are intimately mixed and granulated to produce granules with a narrow size distribution, large ...
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Influence of iron ore concentrate on the characteristics …
Earlier studies reported on the properties of iron ore and the quality of sinter. However, there is no unified understanding of the effect of SiO. 2. on the fluidity of iron ore, and the main primary mechanism is not clear. The effect of fluidity of iron ore on the reduction of sinter still lacks deep theoretical insights.
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Effect of Temperature, Time, and Cooling Rate on the …
of the iron ore sintering process more important than ever. Sintering is a process by which a mixture of fine-grained iron ores (< 6.3 mm), fluxes, and coke are agglomerated in a sinter plant to manu-facture a sinter product of a suitable composition, quality, and granulometry to be used as burden material in the blast furnace. Key quality ...
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Iron Ore Sinter
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 …
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Iron Ore Pelletizing Process: An Overview | IntechOpen
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. …
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Mineral Commodity Summaries 2022
Substitutes: The only source of primary iron is iron ore, used directly as direct-shipping ore or converted to briquettes, concentrates, DRI, iron nuggets, pellets, or sinter. DRI, iron nuggets, and scrap are extensively used for steelmaking in electric arc furnaces and in iron and steel foundries. Technological advancements have been made
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Ore-blending optimization for Canadian iron …
elements in the sinter. To understand high-temperature characteristics of CIC and typical iron ore, the formation of the melt was calculated mainly through FactSage 7.2, and melt fluidity (MF) test for iron ore fines and penetration characteristic test of CIC melt into iron ore nuclei were carried out via micro-sintering method.
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Iron Ore Agglomeration Technologies | IntechOpen
The iron ore concentrate is mixed with carbon, and fed into a rotary kiln, ... Iron ore sintering: Environment, automatic, and control techniques. Mineral Processing and Extractive Metallurgy Review. 2017; 38 (4):238-249. DOI: 10.1080/08827508.2017.1288118; 66. Long HM, Li JX, Wang P, Gao G, Tang GW. Emission reduction of dioxin in iron ore ...
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Prediction of the granule size distribution of iron ore sinter …
Iron ore granulation process is simulated by the discrete element method to understand the dynamic behaviour of iron ore particles. The results show that the macroscopic particle flow transits from rolling regime to cascading regime after water addition, with the angle of repose of particles increasing and the level of particle size …
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Effect of Iron Ore Concentrate on Sintering Properties
Abstract. According to sinter pot experiments, with increases in coarser commercial concentrates (mean size 0.1–0.3 mm) in iron ore blends, the productivity of sinter decreased 5–7% for each 10 mass% concentrate increased. With increases in finer commercial concentrates (mean size 0.02 mm) of 10–30 mass%, the productivity did not …
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Basic characteristics of Australian iron ore concentrate …
iron ore concentrate in the sintering process, four tests [3] including assimilability, liquid fluidity, bonding phase strength, and crystal strength [8] were carried out using the micro-sinter equipment. The Australian iron ore concentrate was dried at 105°C for 3 h and ground to a particle size less than 147 μm. In the measurement of ...
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Mineralogical characteristics, metallurgical properties and …
In order to study the sintering characteristics of Ca-rich iron ore, chemical analysis, laser diffraction, scanning electron microscopy, XRD-Rietveld method, and micro-sintering were used to analyze the mineralogical properties and sintering pot tests were used to study the sintering behavior. In addition, a grey correlation mathematical model …
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Fundamental investigations of differences in bonding mechanisms in iron
Several iron ores of different chemical compositions were used in the experimental work including four Chinese (S, Q, H and C) and one European (K) magnetite concentrate and a high-grade Australian hematite ore (A) (Table 1).In plant sinter, the −1-mm fraction is thought to represent the adhering fines fraction which melts and reacts …
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Reductants in iron ore sintering: A critical review
Mill scale made up 5 % of the sinter mixture, which also included 95 % high barite iron ore concentrate, limestone, sinter return, and 12 % moisture. The combination was designed to contain sinter return. As a consequence, we may state that the vertical velocity of the sintering process slows down if there is an increase in the quantity of coke ...
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Mineralogical properties and co-sintering characteristics of
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 …
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Model of an iron ore sinter plant with selective waste gas
Abstract. The use of sinter influences hot metal production substantially and significantly affects an integrated steel mill's total emissions. Sintering of iron ores is an enormous energy-intensive and resources consuming process. Introducing a selective waste gas recirculation (SWGR) to the sintering process reduces the energy consumption ...
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Agglomeration of Iron Ores | SpringerLink
Agglomeration of iron ores is the iron ore pretreatment process in which the powdery iron ore that cannot be directly fed into a blast furnace experiences high-temperature solidification by sintering process and pelletizing process or low-temperature solidification by pelletizing process and briquetting process to generate the rich ore …
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Characterization of Granule Structure and Packed Bed …
KEY WORDS: granule structure; voidage; bed permeability; iron ore sintering; concentrate. be targeted. Historically magnetite concentrates in China have been used for sintering as well as pelletising.5) However the expansion of lower cost iron ore fines production especially in Australia and Brazil during the last decade has led to a
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Strengthening granulation behavior of specularite concentrates …
In order to make effective use of specularite concentrates in sintering process, some methods such as increasing the proportion of limes in sinter mixture ... to avoid the influence of adhesive powders on the granulation behavior of specularite concentrates, the mix of the iron ore fines were 45 mass% SC and 55 mass% Ore-F, …
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Investigation of dephosphorization of brown iron ore concentrates …
Sintering followed by magnetic separation has been considered as one of the possible ways of processing brown iron ore phosphorous concentrates. Experiments have demonstrated that on sinter roasting of the concentrate over the entire range of the studied parameters (basicity from 0 to 2 and coke consumption from 3 to 10%) there occurs the ...
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Recent advances in sintering with high proportions of …
And for many inland sintering plants in China, magnetite concentrates are usually more accessible and cost-effective than imported iron ore fines, resulting in the utilization of a high proportion ...
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Basics of Iron Ore Sintering | SpringerLink
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 dolomite) along with the sinter in blast furnace burden. In this way, the productivity of the furnace considerably improves. In this paper, some fundamental aspects such as the ...
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Reductants in iron ore sintering: A critical review
Today, efforts are being made to improve the quality of the agglomerate by reducing fuel consumption. Consumption of fuel plays a vital role in sinter making. …
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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 …
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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 …
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