Table 1 gives the chemical compositions of raw materials, including iron ore materials, fluxes, coke breeze and return fines (<5 mm). Iron ore materials characterizing high iron content and low impurities such as SiO 2, MgO, Al 2 O 3, and so on.Quicklime and dolomite were Ca- and/or -Mg contained fluxes used to adjust the basicity and MgO …
In order to make better use of manganese fines as well as to save energy and cost in the industry, the sintering process of manganese ore is particularly important. In current study, three different Mn ores are selected to study the effect of ore proportion and basicity on the properties of sinters.
Sintering is an important process used to produce a lumpy iron-bearing feed for the blast furnace (e.g. Ball, 1973, Venkataramana et al., 1999, Zandi et al., 2010).Fine iron ores, typically minus 6 mm, together with a range of fluxes (limestone and MgO-bearing minerals) and coke breeze are blended and placed on a strand which can …
Sintering is a thermal agglomeration process that is applied to a mixture of iron ore fines, recycled ironmaking products, fluxes, slag-forming agents and solid fuel (coke).
The coke combustion process in iron ore sintering is dependent on the coke size. Therefore pilot-scale sintering tests with blends containing different coke size distributions were carried out to ...
Chinese government data indicate that iron ore sinter producers will be able to save 0.42 million tons of standard coal [21] and cut CO 2 emissions per annum by approximately 1.16 million tons if ...
Currently, many commercial sinter plants are exploring the potential addition of high-grade iron ore concentrates to improve the sinter grade.
Since iron ore proportion is at higher side in the sinter mix, its size fraction is very important. JSW Steel sinter plant receives iron ore fines of –10 mm size from Bellary – Hospet region which consist of 3 to 9% bigger than 10 mm and 30 to 35% smaller than 0.15 mm size fraction. It is well known that larger particles favour diffusion ...
MODELING OF REDUCTION DEGRADATION OF IRON ORE SINTER BY FEED-FORWARD NEURAL NETWORKS Kimmo Kinnunen†, Petteri Laitinen‡ † Rautaruukki Oyj, Production Division, P.O. Box 93, FIN-92101 Raahe, ... The coke ratio in the sintering mix was in fact determined to be the most important control variable with …
Extensive review of the opportunities to use biomass-based fuels in iron and steelmaking processes. Hannu Suopajärvi, ... Timo Fabritius, in Journal of Cleaner Production, 2017. 4.2.1 Principles of iron ore sintering. Iron ore sintering is a widely used pre-treatment process to produce agglomerates for blast furnace ironmaking. The iron bearing raw …
Sintering is an agglomeration process that fuses iron ore fines, fluxes, recycled products, slag-forming elements and coke. The purpose of sintering is to obtain a product with suitable ...
2. a screened size of 10 mm to 30 mm, can withstand pressure and temperature conditions in the blast furnace. Principle of sintering Sintering is a thermal process (carried out at 1300 deg C to 1400 deg C) by which a mixture of iron ore, return fines, recycled products of the steel plant industry (such as mill scale, blast furnace …
quantity of sinter feed mix during sintering. All of sinter feed materials are not perfectly melted down and some portions are left in unmelted state. There- fore the volume ratio of the melted portion to the sub- ... size of sinter feed iron ore is so small that measurement of the apparent density of iron ores is inaccurate and unstable ...
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 …
Iron ore sintering is used all over the world to prepare agglomerates for the ironmaking blast furnace [1], [2]. Figure 1 shows a schematic diagram of the major processes in a typical iron ore sintering plant. The blended sinter mix – typically composed of iron ores, fluxes, returned sinter fines, plant dust and about 4 wt.% coke …
In this study, a mixture rich in K, Na, and Pb, composed of undesired elements rich iron ore A, sinter dust, and blast furnace dust (ore-dust mix,), is sintered along with the regular iron ore. The K, Na, and Pb compounds within the ore-dust mix are identified as alkali chlorides, alkali aluminosilicates, PbO, and PbSO4 using X-ray …
IRON ORE SINTER FEED (FSF) IRON ORE FINES (CBF) LUMP ORE (SICLO-1) DIRECT REDUCED IRON (A) BRIQUETTES HOT - MOULDED DIRECT REDUCED IRON (C) (BY - PRODUCT FINES) DIRECT REDUCED IRON (B) PELLETS Ferro Silico Manganese (FeSiMn) 3" x ½" - 2" x ½" Ferro Silico Manganese (FeSiMn) 4" x 1"
Chinese government data indicate that iron ore sinter producers will be able to save 0.42 million tons of standard coal [21] and cut CO 2 emissions per annum by approximately 1.16 million tons if ...
During the iron ore sintering process, its SiO2 content considerably affects the sinter quality. In this study, the effect of SiO2 content on iron ore sintering indexes was studied, with mineral composition and microstructure analyses. It was shown that the strength and reducibility of sintering products improved when SiO2 content increased. …
Iron ore sintering is an important step in ironmaking by the blast furnace route. Sinter now accounts for more than 70% of the blast furnace burden. Raw sinter feed consisting of iron ore fines, coke breeze, limestone, lime, dunite or dolomite and the return sinter fines is initially agglomerated in a rotary drum.
11. 11 B. FIXING OF FEED RATE : For sending raw mix to sinter machine for sintering, fixation of feed rate of materials is done considering capacity of the sinter machine and quality requirement of blast furnace. Feed rate fixed is : Iron ore fines 250 T/hr. Flux 75 T/hr. ( Feeding of Flux depends on available lime in sinter required in blast …
2O, and Pb content in blast furnace feed-ing materials should be below 0.1, 0.12, and 0.015 wt%, respectively [14–16]. To yield sinter products that meet the ... Na, and Pb Phases in Ore-Dust Mix The iron ore A, sinter dust, and blast furnace dust was char-acterized using X-ray diffraction (XRD) measurements. The
The present work proposes a novel process to sinter porous iron ore (porosity ~23–24%) with enhanced productivity and quality. The iron ore is pre-processed in the presence of calcined lime for the temporary closure of pores, which further prevents water absorption during the granulation process in drum in the presence of water. The …
Intensification of the iron ore sintering process is approached with a four-way framework covering granulation improvement, waste gas recycling, fuel gas injection into the sinter bed, and reduction of stack emissions. Various metallurgical wastes are granulated to form micro pellets and are dosed along with the feed to cut down the cost.
Sinter quality begins with the mined iron ore and the proper selection and mixing of the raw materials. Inhomogeneous raw mix can affect permeability and cause an increase in fuel consumption. That's why it is important that the material be analyzed to determine the elemental composition of the bulk raw materials in sinter feed.
the iron ore feed size in sintering process. In present inves-tigation pot grate sintering experiments were carried out with various size iron ore fines (1.22 to 3.95 mm mean size) to study the influence of iron ore feed size on properties and productivity of the sinter. Various researchers define the sizes of the nucleus and
A moist mix of iron ore (s) and lesser amounts of flux materials, coke breeze and recycled sinter is first agglomerated in a bailing drum, and then the resulting granules ( or quasi-particles, as these are also called) are sin- tered on the sintering strand. ... Influence of material properties of iron ore sinter feed on granulation ...
Sintering is the most extensively used and economic agglomeration process to prepare iron ore fines for blast furnace use. Granulation is the most critical factor controlling iron ore sintering process, as it improves sinter mix permeability. Currently, sinter plants are receiving significant proportion (up to 40%) of − 150 μm micro-fines in …
Granulation of the sinter mix is an important step in the iron ore sintering process. Several experiments were conducted at the pilot scale to achieve the PI objectives before the new technologies are developed or installed. Greater permeability of the sinter bed and thereby higher productivity is achieved with an enhanced granulation index.
One, granulation in a rotary drum of moist raw sinter feed comprising iron ore fines, coke breeze, limestone, lime, dun- ... Two, sintering of granulated green mix on a moving sinter strand. The ...
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