Experimental Investigation of Coke Collapse in Quasi-two Dimensional System for a Blast Furnace

Gharat, Sandip H.; Khakhar, D. V.

doi:10.1016/j.proeng.2015.01.164

Cited by 2 publications

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References 2 publications

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“…Many researchers have studied this phenomena in last three decades, in most of the cases material fed was continuous [7][8]. Flows on a heap by intermittent feeding has been done by [9][10][11] and still more experimental work is to be done. In this paper, the segregation during heap formation has been studied in a quasi two dimensional rectangular bin for a mixture of different sized spherical particles having equal density by means of high speed video imaging.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of segregation of granular mixtures during heap formation

Gharat¹

2021

EPJ Web Conf.

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The present study is on segregation of granular mixtures during heap formation in a quasi two-dimensional rectangular bin where binary mixture of a specified composition is poured intermittently into the auxiliary hopper and then allowed to pass through the gap (k = 10 mm) between the divider and the plate and finally settle on to the heap. The profiles of number fraction of big particles are plotted along the flow directions to study the segregation phenomena for surface profile. It shows that larger particles travel more distance and smaller particles settle near the pouring point for all cases studied.

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Section: Introductionmentioning

confidence: 99%

Experimental investigation of segregation of granular mixtures during heap formation

Gharat¹

2021

EPJ Web Conf.

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“…12,13) It is hard to ascertain the effect of the charging a layer on the underlying layers as it is difficult to measure the underlying profile after the new layer has been charged. Some studies have used magnetometer readings 14) or image processing techniques 8,15) for experimental verification, but these method have their own drawbacks: magnetometer is intrusive disturbing the layer structure and image processing requires a furnace section with a transparent wall, which induces wall effects. Therefore some studies have resorted to sophisticated numerical techniques like Discrete Element Modeling (DEM) for better understanding of the phenomena involved.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Coke Collapse in the Blast Furnace Using Mathematical Modeling and Small Scale Experiments

Mitra

Saxén

2016

ISIJ International

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Burden distribution plays a key role in controlling the gas flow conditions inside a blast furnace. The distribution of ore and coke influences the gas permeability distribution in the lumpy zone and also in the cohesive zone, where the gas flows mainly through the coke slits. Charging an ore dump on coke can sometimes cause the coke layer to collapse under the force of the heavier ore particles. This is known as 'coke collapse' or 'coke push', which results in a higher coke fraction near the center of the furnace than expected. In this work coke collapse phenomena are evaluated on model charging programs using small scale experiments and Discrete Element Modeling (DEM). DEM simulations were used to study the extent of collapse for different charging programs, and experiments were undertaken to verify the results of the simulations. The slope stability method was used to classify the collapse conditions into no collapse, impact failure or gravity failure, depending on the stability of the coke layer. The findings were also compared with results from an in-house mathematical model, which was modified to consider the effect of the collapse on the underlying layer. The corrected mathematical model was found to show results in general agreement with results from the DEM simulation.

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Experimental Investigation of Coke Collapse in Quasi-two Dimensional System for a Blast Furnace

Cited by 2 publications

References 2 publications

Experimental investigation of segregation of granular mixtures during heap formation

Experimental investigation of segregation of granular mixtures during heap formation

Investigation of Coke Collapse in the Blast Furnace Using Mathematical Modeling and Small Scale Experiments

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