ratio of return fine (+1 mm) and return fine (–1 mm), which were 7.7% and 7.3% respectively, corresponds to the size distribution of return fine shown in Fig. 4, in which –1 mm ratio is 49%. Sintering was performed under constant pressure drop of 10.3 kPa of sinter packed bed, after igniting by LPG burner for 1 min under 5.2 kPa.
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— Prior to dispatch of sinter to the blast furnace for hot metal production, the sinter product from the sinter cooler is screened to remove smaller/finer particles. The undersize so generated is called internal return fines, which are generally recirculated into the sintering machine. A very high level of internal return fines generation limits the use …
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— The optimal addition of return fines from BF sieving was suggested not to surpass 30 mass% by melt generation balance, and the ratio for return fines from sintering sieving should be controlled at ...
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— For a 360 m 2 sintering machine (annual output of 4 million tons), it can reduce 45,400 tons CO 2 emissions, save 386.68 TJ energy and $2866,448 production cost per year. Moreover, the surface fuel addition sintering is simple which is easy to industrialization, can be widely used in all sintering plants at present.
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In the sintering process, raw materials such as iron ... ore and limestone are used as the main raw materials, and powder coke as an agglomerating material and return fines of sinter, which are undersize sinter products, are blended as recycled raw materials. If the ratio of return fines of sin- ... based on Eq. (1) from Andreasen's ...
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— The paper describes return sinter fines regime and the factors influencing it under the prevailing condition of the sintering plant at Bhilai, India. The effect of return sinter fines, basicity and other variables on the yield of sinter and speed of sintering has been evaluated through the pot sintering experiments designed statistically and empirical …
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All raw materials are dosed automatically based on the required composition of the overall mix. Water and additional binders are added to achieve …
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— The sinter plant that converts the iron ore fines into a desirable blast furnace feed, offers an avenue for recycling wastes. One of the several wastes that are produced at an iron and steel plant is the undersized pellet fines, which cannot be directly used in iron making. The present study evaluated the influence of these pellet fines on the sintering …
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The difference between the weight of the cold fines, and the weight of the total fines produced, gives a measure of the hot fines. Any abnormal variation in the rate of production of hot or cold return fines indicates a possible plant fault. The following factors can affect the rate at which fines are produced: Mix control; Particle size ...
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— Return fines larger than 3 mm, particularly those between 4 mm and 5 mm, played a key role in improving bed permeability, and the corresponding mass ratio to the total weight of return fines is not expected to exceed 60%. ... Specifically, a typical sintering plant produces approximately 13 million tons of sinter per year [18], and each ton of ...
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— The sintering process is used to agglomerate a mix of iron ore fines, return fines, fluxes, and coke, with a particle size of less than 10 mm, so that the resulting sinter, with a screened size of 5 mm to 30 mm, can withstand pressure and temperature conditions in the blast furnace (BF). ... In an integrated steel plant, the sintering process ...
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— Moreover, they applied return fines embedding technology to three sinter plants, which revealed that return fines embedding technology could considerably …
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Abstract. The paper describes return sinter fines regime and the factors influencing it under the prevailing condition of the sintering plant at Bhilai, India. The effect of return sinter …
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— Like other sintering processes, iron ore sintering converts iron ore fines of often − 8 mm sizing into larger agglomerates, namely, sinter, between 5 and 50 mm particle size, which possess the physical and metallurgical characteristics and gas permeability required for efficient blast furnace operation.As shown in Figure 14.1, iron ore sintering …
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— For both the sintering practices, conventional and proposed, the input parameters such as cost of iron ore values, limestone, lime, dolomite, return fines and storage arrangements and energy have to be taken into account. These values are largely identical for the conventional (coal-based) and proposed (biomass blend based) processes.
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proportion of return fines as in the plant. The -6.3 mm fraction shall be reported as 'Return Fines' and +6.3 mm fraction shall be taken for various physical/chemical tests as per the relevant Indian Standards. 6 REPORTING OFTEST RESULTS 6. I All additions shall be reported based on percentage of green ore mix.
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— The production of sinter return fines increased even though charcoal addition increased from 3.62 % to 4.17 %, i.e. 50 % charcoal addition. With 100 % charcoal addition, i.e. 4.7 %, the sinter mixture failed to achieve sinter return balance. ... Exhaust gases from iron ore sintering plants must be desulphurized since sulphur dioxide is a ...
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— The sintering process is used to agglomerate a mix of iron ore fines, return fines, fluxes, and coke breeze, with a particle size of less than 10 mm, so that the resulting sinter, with a screened size of 5 mm to 30 mm, can withstand the pressure and the temperature conditions in the blast furnace (BF). ... Sintering plant consists of two ...
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— The process of iron ore sintering involved several key steps: proportioning, mixing, ignition, sintering, crushing, cooling and screening. As shown in Fig. 1, the process began with the comprehensive formulation of iron ore fines, coke fines, limestone, dolomite and return fines in compliance with specified proportions. This mixture was then ...
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— Horizontal segregation has been a constraint to the development and application of super-high bed sintering. To eliminate the horizontal segregation of super-high bed sintering, several typical sintering machines were sampled and analyzed, and theoretical calculation was made to compare the bed depth and their differences in …
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— The crude steel production of China has exceeded 800 million tons since 2014, which accounting for about 50% of world's production. The convention blast furnace-converter process is mainly used in Chinese iron and steel enterprises, in which sinter accounts for nearly 75% of blast furnace burden [1].Sintering is the second largest …
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— Fuel costs are high for sintering plants because of the expensive price of coke. ... the return fines balance is the mass ratio of the produced return fines to the provided return fines; its ...
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— The sample collected is weighed and the RI is calculated as per Eq. (1). (1) ... were fixed at 28%. Return fines ensure the generation of low-temperature melt. They facilitate assimilation with the sinter blend and liquid fluidity. ... A novel approach for utilization of ultra-fines iron ore in sintering process. Steel Res Int, 86 (2015), pp ...
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The difference between the weight of the cold fines, and the weight of the total fines produced, gives a measure of the hot fines. Any abnormal variation in the rate of production of hot or cold return fines indicates a …
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— DOI: 10.3390/met13010062 Corpus ID: 255220081; Effect of Return Fines Embedding on the Sintering Behaviour of Vanadium Titanium Magnetite Concentrates @article{Peng2022EffectOR, title={Effect of Return Fines Embedding on the Sintering Behaviour of Vanadium Titanium Magnetite Concentrates}, author={Shihong Peng and …
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A Sinter plant in a steel plant is the final operation in a series of measures to prepare iron ore for blast furnace smelting.A sinter plant is an enterprise with a complicated …
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