Evaluation of Coarse Ores for Sintering on the Basis of Their Mineralogical Properties

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

“…Moreover, the following properties are required for the particles charged into sintering machine; the quasi-particles, granules of coarse iron ore with fines adhered on them, must be hard not to break down when they are charged into feed hopper (drop strength) and inside the feed hopper (compressive strength) and the quasi-particles also keep their shapes during sintering, especially in dry zone (dry strength). In addition, it is well known that the structure and strength of the quasi-particles are influenced greatly by the porosity of iron ore, wettability between iron ore and water, adding moisture and characteristic of surface of iron ore. [1][2][3][4][5][6][7][8][9][10][11][12][13] Therefore, in this study, as the fundamental research for clarifying the factor on strength of quasi-particle granulated by using the limonite iron ore, the effects of porosity, adding moisture and revolution speed of pelletizer on the strength of granulated particle were examined by using reagent hematite. In addition, using three kinds of iron ore, the relationship between granulated particle size and strength was examined.…”

Improvement of Permeability of Sintering Bed by Adding Dry Particles to Granulated Raw Materials

“…Both base and RF-MEBIOS process, permeability of sintering bed increased by increasing of moisture content in the range up to about 7.0% moisture content, and then became maximum value at about 7.0%, and then turned decreased. There are many reports focused on the role of water at granulation; [12][13][14][15][16][17][18] Sato et al 13) explain that the relation as shown in Fig. 8 is achieved by the combination of the increasing of adhering small particles and the decreasing of void filled by excess water, and Matsumura et al 17) report that the moisture content which indicates the maximum permeability is different by ore brand because absorbing water capacity are different.…”

Influence of the Nuclei Particle Properties on Granulability of Marra Mamba Iron Ore by High Speed Agitating Mixer

“…It is considered that this phenomenon originates in the interaction of fine Marra Mamba ore and nuclei particle. Especially, ore surface structures which is thought that the adhesion characteristic of fine ore to nuclei particle is affected 15) and the particle size distribution of nuclei particle in high-speed agitated material are carried out is a factor that has a strong influence on granulability. Then, the influence of the characteristics of nuclei particle on the granulability is examined.…”