Effect of Adding Moisture and Wettability on Granulation of Iron Ore

Maeda, Takayuki; Fukumoto, Chieko; Matsumura, Toshihide; Nishioka, Koki; Shimizu, Masakata

doi:10.2355/isijinternational.45.477

Cited by 31 publications

(19 citation statements)

References 6 publications

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“…As well as previous study, 14) a screened particle was dropped from a place with a height of 50 cm and the falling numbers until it was fractured were measured. Moreover, the compressive strength of granulated particle just after granulation and after drying for 24 h at 120°C was measured by using a (tensile and) compression testing machine as shown in Fig.…”

Section: Evaluation Methods Of Strength For Granulatedmentioning

confidence: 99%

Effect of Granulation Condition and Property of Raw Material on Strength of Granulated Particle by Tumbling Granulation

2009

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Section: Evaluation Methods Of Strength For Granulatedmentioning

confidence: 99%

Effect of Granulation Condition and Property of Raw Material on Strength of Granulated Particle by Tumbling Granulation

2009

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“…Granulation ability of ores seems to depend on the surface structure of coarse ores acting as nuclei. 12,13) Nevertheless, once fine particles adhere the surface of nuclei ores, further development of granulation seemed to be controlled by cohesive ability among fine particles within adhering layer in psudo-particles. Therefore in the present study, cohesive strength of fine ores was measured to estimate one of the properties concerning granulation ability of ores.…”

Section: Granulation Ability 1) Cohesive Strength Of Finementioning

confidence: 99%

Marra Mamba Ore, Its Mineralogical Properties and Evaluation for Utilization

Okazaki

Higuchi

2005

ISIJ Int.

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This paper provides an overview of chemical and physical properties of Marra Mamba ores as well as their influence on sintering performance. Evaluation tests focusing on basic characteristics, granulation ability and melting behavior have been conducted by using Ore W, a newly shipped bland of Marra Mamba ore. Although the amount of gangue minerals in Marra Mamba ores is smaller than that of other Australian ores, they have high combined water content and high fraction of fine particles. They have inferior granulation ability and required high moisture content in granulation due to their porous structure. Cohesive strength of fine ores is still low level even at high moisture content due to small kaolinite content. Penetration behavior of melt from fine particles is superior due to their low gangue mineral content, while assimilation behavior of coarse ores is inferior, resulting in poor agglomeration despite favorable behavior during heating-up in term of crack formation. Pot test results performed by BHP Billion showed decrease of strength and product yield with large amount of use. Improvement of strength was achieved by increasing moisture content during granulation. Intensification of granulation with pre-treatment or palletizing of Marra Mamba ores must be one of the key technologies for utilization of them.

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“…Based on a study of a granulation simulation model by Kano et al 22) and Marra Mamba ore granulation tests by Maeda et al, 21) it is thought that dense and coarse granulated material can be produced even with a drum mixer. It is thought that the specific equipment operating conditions will need to be quantitatively studied in the future.…”

Section: Granulation Design Of Dense and Coarse Spheresmentioning

confidence: 99%

“…According to an evaluation of limonite granulation properties by Maeda et al, 21) Marra Mamba ore lacks adhesive forces, but has many small particles and good wetting properties, and can be evaluated as a brand that facilitates the formation of fine coarse particles. Based on a study of a granulation simulation model by Kano et al 22) and Marra Mamba ore granulation tests by Maeda et al, 21) it is thought that dense and coarse granulated material can be produced even with a drum mixer.…”

Section: Granulation Design Of Dense and Coarse Spheresmentioning

confidence: 99%

Summarized Achievements of the Porous Meso-mosaic Texture Sinter Research Project

Kawaguchi¹,

Usui

2005

ISIJ Int.

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Research Group on Porous Meso-mosaic Texture Sinter in ISIJ was established from 2001 to 2004 fiscal years to overcome difficulties to use the great amount of goethite in sintering and at the same time to improve the sinter quality. Especially, since the beginning of the present research project the ratio of Marra Mamba goethitic ore was considered to increase rapidly, and the amount of sinter necessary for the Japanese integrated steel industries was thought hard to be produced satisfactorily, because Marra Mamba ore having high combined water content and high porosity was expected unsuitable for sintering. Therefore, the method of using goethite had been studied and the combination with low slag ratio important for melting behavior of goethite was investigated.Each university had been engaged in basic research such as granulation, agglomeration, evaluation of reaction in a blast furnace to propose a new process for "porous meso-mosaic texture sinter" which was anticipated simultaneously to realize high strength and high reducibility under the conditions of low slag and high goethite ratio in sintering.By combining these basic researches, the theory of agglomeration and the engineering foundation for raw material/sintering/blast furnace process were discussed and a new process for "porous meso-mosaic texture sinter" based on improving granulation process of raw material was searched. As a result, proposed was the MEBIOS (Mosaic Embedding Iron Ore Sintering) method which involved arranging dense pre-granulated pellets (firing cured bed) in a sinter induction bed with a raw material composition capable of forming a suitable void network under normal sintering conditions.

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Effect of Adding Moisture and Wettability on Granulation of Iron Ore

Cited by 31 publications

References 6 publications

Effect of Granulation Condition and Property of Raw Material on Strength of Granulated Particle by Tumbling Granulation

Effect of Granulation Condition and Property of Raw Material on Strength of Granulated Particle by Tumbling Granulation

Marra Mamba Ore, Its Mineralogical Properties and Evaluation for Utilization

Summarized Achievements of the Porous Meso-mosaic Texture Sinter Research Project

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