Improvement of Sinter Strength and Reducibility through ...

netite iron ore than other methods, for example, flotation method. Since magnetic iron ore is generally magnetite (Fe 3O 4), we have focused on it. Generally, in case of high blending ratio of magnetite ore in sinter mixture, Fe2+ in the iron ore sinter increases, which results in lower reduc-ibility.1) Therefore, in the sintering process ...

Some experiences in the sintering of iron ores

2012-6-15 · content of sinter arises mostly from the corresponding gangue content in the ore fines and also a 1.6% increase from the ash in coke breeze. To reduce the gangue content of the sinter feed, a scrubbing and wet screening facility was added to the existing ore-crushing and screening plant. The results of the first three months of operation

Effect of MgO on Highly Basic Sinters with High Al2O3 ...

2021-7-4 · The increase of the proportion of high Al 2 O 3 content iron ore fine in iron and steel enterprises has brought about a series of problems such as the increase of the viscosity of blast furnace slag and the difficulty of the separation of slag and iron. In order to solve this problem, the effect of increasing MgO content on the technical and economic index, the cold strength, and metallurgical ...

Development of Chromite Sinter from Ultra-Fine …

the produced sinter and the incipient formation of 20% mol-ten phase (olivine). However, as discussed previously, the briquetting of chro-mite ore fines requires costly binders, exhibits poor perfor-mance in the ferrochrome production. The making of green pellet with suitable cold handling strength from a chromite ore …

Reduction behavior and crushing strength of carbon ...

2015-10-1 · The reduction behavior and crushing strength of SI–C were then examined with a quartz-made fixed bed reactor and with a tensile and compression testing machine, respectively. 2. Experimental2.1. Sample. Agglomerated iron ore sinter (SI) was supplied by the Japanese steel company and used in this work.

Iron Ore Pelletizing Process: An Overview

2018-7-17 · 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 Table 1. Iron ore products classification for ironmaking [3]. ... ISO 4700 Determination of the crushing strength ISO 3271 Determination of the tumble and abrasion index

Sintering ofiron Ore Fines, and Raw Materials for Bhilai ...

2012-7-20 · crushing and screening arises, after which it is ... sinter strength, and it is desirable in practice to achieve a compromise between strength and reduci- ... 7—Effect of varying water content on sinter-ing time. Additions other than ore and fuel, such as …

SINTERING AND PELLETISATION OF INDIAN IRON ORES

2020-2-2 · mechanical strength, measuring between 2 mm and 8 mm. HPS feed consists of iron ore as pellet feed fines, return fines and iron and steel work remnants, filter dust, additives and binders like limestone, dolomite, bentonite and coal dust. These micro pellets are fed onto a sinter machine to

(PDF) Iron Ore Sintering: Quality Indices

2017-5-2 · improves cold crushing strength) (Umadevi et al. 2012). Sinter RDI (desired <27%) decreases when increasing FeO, ... the magnesia, silica, and alumina contents of iron ore sinter …

Development of Chromite Sinter from Ultra-Fine Chromite ...

Cold crushing strength of sinter (pellet), in kg, vs temperature. The XRD analysis of the sintered pellets, for each of the three temperatures, 1500, 1550, and 1600°C, are given in Fig. 5 . It is evident that with the increase in temperature, the percentage of the molten phases (Fe 2 SiO 4 (melting point, 1220°C), Ca 2 Al 2 SiO 7, and MgCa 2 ...

Influence of limestone particle size on iron ore sinter ...

Higher sinter strength is due to better and uniform distribution of limestone particles, and better bed permeability enabled easy assimilation and effective distribution of calcium ferrite phases. The improvement in sinter RDI is due to change in mineralogy of the sinter compared to coarser and finer limestone mean particle size.

cold crushing strength of iron ore pellets

To iron ore pellets heated byInfluence of Pellet Basicity (CaO/SiO2) on Iron Ore Cold crushing strength unlike sinter pellets are close to spherical in shape therefore the mechanical property of pellets can readily be measured by a compression test iso 47002007 was developed to determine the ccs of iron ore pellets in accordance with iso 4700 ...

Improvement of sinter strength and reducibility through ...

The main results obtained are described as follows: (1) "Separate Granulation" in case that magnetite is pre-granulated with high Al 2 O 3 iron ore without limestone and coke breeze resulted in decrease of FeO in sinter and improvement of both sinter reducibility and sinter strength. (2) Sinter micro structure featured restriction of pore, low ...

Experimental study on crushing strength and Young''s ...

2020-12-1 · For both the crushing strength and Young''s modulus of iron ore granules, their desired value should be the higher-the-better type. The S/N ratio is calculated as (4) S N = − 10 log ( 1 m ∑ i = 1 m 1 Y i 2 ), where m is the total number of tests and Y i is the experimental results of the i th test.

Rate-Limiting Mechanism in Iron Ore Sintering Process …

2021-2-4 · In the iron ore sintering process, the heat is supplied majorly by solid fuel. Higher is the solid fuel, more is the formation of Fe 3 O 4 and FeO [2, 3]. The degree of reduction is indicated by the amount of Fe 3 O 4 and FeO. Increase in FeO increases the strength of the sinter. The other mineralogical phase that enhances the strength of the ...

IRON ORE SINTERING PART 2. QUALITY INDICES AND ...

2016-10-27 · reduction in sinter strength, reducibility and productivity [11,12]. In research carried out in a sinter pot with 65 kg of raw mix, the MgO content of four manufactured sinters was increased from 1.4 to 2.6% by the addition of dolomite to the mix. The iron ore used presents a low MgO content (0.01%) and a high Al 2 O 3 content (2.99%).

Influence of Pellet Basicity (CaO/SiO2) on Iron Ore Pellet ...

Considering only the values presented in Fig. 5 and comparing these with those from literature, it can be seen that the values of crushing strength obtained in the 7 burning tests were similar and ...

Effect of Binders on the Crushing Strength of Ferro ...

Without iron ore, QM had the highest crushing strength, which was 92.25%. When the addition amounts of iron ore were 10% (QE1) and 20% (QE2), the ferro-coke could maintain a higher crushing strength, which were 78.94% and 72.11%, respectively. When the addition amount of iron ore was 30%, the crushing strength of QE3 dropped to 18.15%.

Iron Ore Agglomeration Technologies

2018-10-30 · iron ore sinter strands, producing in the first decade of the twenty-first century 130 million ... strength to the indurated pellets), and inorganics (usually result in strong pellets, which is ... crushing), and the final product [8]. The pelletizer discs are the second technology, having as ...

Beneficiation and Sinter Amenability Study of Iron Ore ...

2020-5-6 · sinter iron ore burden without affecting the present level of sinter plant productivity of 1.28 in Durgapur Steel Plant (2003-04). The sinter produced with 10% slime mixed with 2% lime in ore burden had shatter strength of 72%(yield of +5mm), tumbler strength index of 56%( yield of +6.5mm) and improved productivity of 1.34.

Predicting iron ore sinter strength through partial least ...

Here, the suitability of using partial least-squares regression analysis of powder X-ray diffraction data, collected for iron ore sinter samples, for the prediction of iron ore sinter strength has been further assessed. In addition, a preliminary assessment of the effect of 2 θ range on the quality of prediction has been made. For the purposes ...

Eff ects of Fine Iron Ore on Sinter Resistance and ...

2019-1-10 · Sinter facilities consist of large stock areas, blending areas, ore crushing and screening units, dosing systems, coke, limestone, crushing-screening units and sintering machines. The sintering process is based on treating a mix (fine iron ore, return fines, fluxes, etc.) layer in presence of

CHAPTER-11 FUNDAMENTALS OF IRON ORE SINTERING

2012-8-16 · The sinter mix, besides the ore fines, usually contains other materials like flue dust, return fines, limestone and/or dolomite etc., in order to control the properties of the product as well as to utilize industrial waste. Return sinter fines having lower fusion temperature than the raw mix

Iron Ore Sinter Crushing Strength

Sintering and pelletisation of indian iron ores979 Кб. No need for crushing and screening of iron ore and resultant fines disposal problem No losses in handling18 SINTERING PROCESS The major advantages of using sinter in BFs are Use of iron ore fines, cokemicro pellets with high mechanical strength, measuring between 2 mm and 8 mm.

Effect of Lime coating of iron ore pellets on Iron …

the sinter properties like strength and reducibility. Depending upon the quality of ore and the physical and chemical properties of sinter, it is generally agreed that, on an average of

Optimisation of FeO in iron ore sinter at JSW Steel ...

Sinter strength also reaches maximum values when sinter FeO values of 8.6-9.88%, because of the presence of more acicular SFCA phase (fine acicular SFCA minimizes the number of cracks and large ...

NEELACHAL ISPAT NIGAM LTD

2017-9-22 · which provides better strength to the sinter. Also the porosity is more in case of A2 and A3 which can ... calcined lime faces in the sinter. As it is known that calcined lime is very much hygroscopic, the sinter gets decrepitated. The crushing index of fluxes should be 90% minimum. ... The main source of FeO in sinter is iron ore fines, mill ...

Influence of LD Slag on Iron Ore Sinter Properties and ...

2011-2-9 · The sinter strength and RDI of the sinter deteriorated due to non ... Keywords: LD slag, Iron ore sinter, Production, Physical and metallurgical properties. INTRODUCTION ... completely dumped or used for ground filling after crushing. Based on the earlier trials at JSW