In numerical simulations of the blast furnace, the discrete element method (DEM) is a quite novel method. The accuracy of physical parameters of the method is a key issue for the reliability of the results. In this study, we first measured the parameters describing the interaction between pellets, sinter and coke, as well as between these …
ادامه مطلبThe iron ore production has significantly expanded in recent years, owing to increasing steel demands in developing countries. However, …
ادامه مطلبPellet feed and sinter feed showed a high amount of fine particles (8–20% dp<10 mm) and a low pore volume (Vpore<10 mm). ... were transported around the world using bulk carriers, more than any ...
ادامه مطلبSinter and pellets are agglomerated forms of iron ore, both suitable for use as blast furnace burden materials. The principle difference between sinter and pellets arises from …
ادامه مطلب(2) The pellet ratio has a significant effect on the distribution characteristics and the burden profiles at the furnace throat. When the pellet ratio increases from 0% to , the relative radius of peak position of the burden layer increases from 0.491 R to 0.639 R, while the peak height decreases from 0.860 m to 0.543 m.
ادامه مطلبDOI: 10.1016/J.POWTEC.2016.03.010 Corpus ID: 102022438; Prediction of the granule size distribution of iron ore sinter feeds that contain concentrate and micropellets @article{Nyembwe2016PredictionOT, title={Prediction of the granule size distribution of iron ore sinter feeds that contain concentrate and micropellets}, author={Andr{'e} …
ادامه مطلبA comparison of pelletizing process with sintering process shows that large-scale grate-kiln process has more advantages: the iron content of pellet is higher than that of sinter; the process ...
ادامه مطلبCompared to the conventional blast furnace case, NBLL lump and sinter show a lower degradation for the H2 injection case while it was the opposite for the pellet, suggesting the necessity of ...
ادامه مطلبIt is found that lump ore has lowest reduction rate in all test conditions, and at lower temperatures iron ore pellets reduce faster than sinter, and this is reversed at higher temperatures. Furthermore, the reduction rate of sinter and iron ore pellets begins to resemble each other at higher temperatures.
ادامه مطلبA blast furnace (BF) is the dominant process for making iron in the world. The BF is charged with metallurgical coke and iron burden materials including iron ore pellets, sinter, and lump ore.
ادامه مطلبThe world installed pelletizing capacity is ... The balling equipment that can be either a disc or a drum produces green pellets in a variable size distribution. 3.1. ... furnaces, opportunity to increase the Fe content of the charge materials, and superior environmental performance of pellet plants as compared to sinter plants; the main iron ...
ادامه مطلبFig. 12 presents the mass percentage distribution of pellets and sinter in the radial direction of the furnace throat when the pellet ratio is 20%, 40%, 60% and 80%, respectively. In the area near the center of the furnace throat, such as the radial positions 1, 2 and 3, the mass percentage of pellets is relatively high which is greater than ...
ادامه مطلبRequest PDF | Optimizing MgO distribution between sinter and pellet based on melting behavior and interaction | During blast furnace ironmaking, MgO flux is added to the sinter or pellets to ...
ادامه مطلبPellet is made from iron concentrate with a nickname of "smoothing pill" because of its round shape and value for the burden permeability inside blast furnace. It is easy to roll under the distribution chute of blast furnace; therefore the blast furnace shape is slimmer when using high pellet ratio and squat for high sinter ratio.
ادامه مطلبHigh CaO material and sinter began to melt from 1250°C, completely melted at 1300°C, and assimilated with magnetite fine ore. The double layer mini-pellet with core of sinter …
ادامه مطلب3 Figure 2. Projected Product Sales Distribution for the Global Seaborne Iron Ore Trade. (1) The increasing importance of fired pellets and pellet feed in the global seaborne trade
ادامه مطلبrepose pellets distribution during charging with other materials in blast furnace creates inhomogeneous distribution. In order to alleviate the above problem, a composite mass of acid pellet and basic sinter has been developed, wherein; green pellets made-up of microfines were mixed with basic sinter mix and sin-
ادامه مطلبAbstract: India as a 4th steel producer in the world has resulted due to adaptation of new technologies in the field of iron and steel ... sinter/pellets etc, burden distribution including bell less top charging design, furnace structure design, cast house design and practice with multi tap-hole and runner, furnace cooling system design changes ...
ادامه مطلبFour types of sintering techniques—viz conventional pressure less sintering, hot pressing, spark plasma sintering, pulsed electric current sintering, …
ادامه مطلبWith a growing demand for high-grade pellet feeds as well as a considerable increase in ore price, using cost-effective and high-grade sinter feeds for oxidized …
ادامه مطلبIn order to alleviate the above problem, a composite mass of acid pellet and basic sinter has been developed, wherein; green pellets made-up of microfines were mixed with basic sinter mix and ...
ادامه مطلبIn this context, this Topic on "Advances in Sintering and Pellet Technology" invites the submission of scientific and industrial contributions that present the latest efforts relating to the preparation and use of pellets and sinters in pyrometallurgical applications, including experimental work, characterization work, modeling work, and ...
ادامه مطلبCompared with lump ore, sinter and pellets, particularly fluxed pellets, are more porous and reducible with an RI value of often > 65. Lump ores are often less porous and therefore lower in reducibility than sinter and most pellets. The RI value of lump ores varies widely from the middle forties to the low seventies.
ادامه مطلب15.1. Introduction. Iron ore lump, sinter, and pellets comprise the main burden of modern blast furnaces. However, sinter and pellets are now the dominant blast furnace burden, because the natural lump supply has declined dramatically due to depletion of the world's high-grade competent iron ore resources.
ادامه مطلبIron ore is the basic raw material for iron and steel making. India is among the leading producers of iron ore in the world and produces about 150 million tons per annum (U. S. []).The total reserves of iron ore in India is around 28.5 billion tons, of this hematite ore is considered to be the most important iron ore because of its high grade …
ادامه مطلبThe study put forward by [1] compared sinter to pellets and clearly stated various environmental and technical benefits of using …
ادامه مطلبThe porosity distribution of burden beds has an important influence on the gas flow distribution and chemical reactions in the blast furnace, while the initial porosity distribution in the top part of the furnace is determined by the original burden distribution.In this work, the layers of sinter and coke in the throat region were …
ادامه مطلبAbstract A blast furnace (BF) is the dominant process for making iron in the world. The BF is charged with metallurgical coke and iron burden materials including iron ore pellets, sinter, and lump ore. While descending in the BF the charge materials reduce. The iron‐bearing materials should reduce fast and remain in the solid form until as high a …
ادامه مطلبTo make full use of the available heat accumulation and adjust the pellet distribution, a good energy saving effect is obtained because the coke breeze mass declines by 13.91 kg/t-sinter. ... In China, crude steel output already ranks in the first place in the world. High-quality sinter and pellet are needed for blast furnaces. Therefore ...
ادامه مطلبA blast furnace (BF) is the dominant process for making iron in the world. The BF is charged with metallurgical coke and iron burden materials including iron ore pellets, sinter, and lump ore. While descending in the BF the charge materials reduce. The iron‐bearing materials should reduce fast and remain in the solid form until as high a …
ادامه مطلب