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Although applied in a broad range (10–40 mm, 2–23 wt-%), limited information is available on changed burden behaviour in its presence. In the present study, the detailed …Web
The consequence of microwave energy on rheological behaviour for Indian iron ore slurries has been reported by Sahoo et al. 2017 [16]. The experimental setup for iron ore samples in microwave oven is shown in Fig. 2 with exposure times 30, 60, 90 and 120 s. CCD was used to study the effect of solid concentration, particle diameter, MW …Web
Sustainable handling of iron ore tailings is of prime concern to all stakeholders who are into iron ore mining. This study seeks to add value to the tailings by utilising them as a replacement for aggregates in concrete. A concrete mix of grade 40 MPa was prepared in the laboratory with water–cement ratio of 0.5.Web
Furthermore, the granulation behaviour of iron ore particles also has an influence on the structural properties and the chemical composition of the agglomerated quasi-particles (hereafter called iron ore granules), which will in turn affect the sintering reactions [4]. Therefore, clearly understanding the iron ore granulation process is the key ...Web
Sintering is a process where a mixture of ore, flux and coke is agglomerated (agglomerated) in the sinter plant to produce suitable sintered products in terms of composition, quality and ...Web
The four iron ore samples presented different particle size behaviour (Fig. 2). The IO-1 sample had particle size distribution in both fine and coarse fractions (Fig. 2a).Web
Abstract. Sintering is the most economic and widely used agglomeration process to prepare iron ore fines for blast furnace use. In this chapter, the sintering process is first described to identify the key steps of the process, that is, granulation and thermal densification. Discussion is then focused on the effect of the chemical, physical ...Web
High-phosphorus iron ore resource is considered a refractory iron ore because of its high-phosphorus content and complex ore phase structure. Therefore, the development of innovative technology to realize the efficient utilization of high-phosphorus iron ore resources is of theoretical and practical significance. Thus, a method for …Web
The activities involved in mining and processing iron ore include crushing and screening methods to more sophisticated processes to upgrade the ore quality. The two IOTs analyzed in this study show different gradings due to different beneficiation stages. ... The Mechanical behaviour of Panzhihua iron tailings. Can. Geotech. J., 56 (3) (2019 ...Web
This work investigates the melting behaviour of iron ore with calcium-based fluxes, including lime, limestone and basic oxygen furnace (BOF) steelmaking slag. With an aim to explore the potential kinetic benefits that can be obtained through the formation of a liquid medium on the overall productivity of HIsarna.Web
iron processing, use of a smelting process to turn the ore into a form from which products can be fashioned. Included in this article also is a discussion of the mining of iron and of its preparation for smelting. Iron (Fe) is a …Web
This behaviour is also refereed to as topochemical. ... Iron ore reduction is a primary unit operation in current metallurgy processes and dominates the energy consumption and greenhouse gas (GHG) emissions of the iron-making process. Therefore, even a slight improvement of the energy efficiency or GHG emissions of iron ore …Web
Dr Lu is the Team Leader for Sintering & Pelletisation guiding CSIRO's R&D into iron ore agglomeration and high temperature behaviour of iron ore agglomerates in blast furnaces and alternative ironmaking processes. With more than 30 years of R&D experience in the characterisation, processing and evaluation of iron ores, metallurgical ...Web
This work proposes a novel horizontal high-shear granulator for iron ore granulation before sintering process. The granulation behavior such as growth process and structure of granules were firstly analyzed, followed by the effects of operation conditions such as water content, initial particle size distribution, and the concentrate ratio. The …Web
Abstract and Figures. Softening and melting behaviour of the iron ore materials was studied towards understanding the mechanism of formation of liquid slag and metal phases in the pre-reduced ...Web
In a nitrogen environment, Hu et al. investigated the influence of iron ore concentration and temperature on the reduction behavior of iron ore and biochar …Web
This work investigates the melting behaviour of iron ore with calcium-based fluxes, including lime, limestone and basic oxygen furnace (BOF) steelmaking slag. With an aim to explore the potential kinetic benefits that can be obtained through the formation of a liquid medium on the overall productivity of HIsarna.Web
Self-reducing briquettes made with waste (silica fume, iron ore and charcoal fines) from the FeSi75 industry were studied. The objective was to determine if these briquettes could be used as a complementary load in submerged arc furnaces (SAF). Characterization of this waste was performed and the briquettes were produced without …Web
An experimental program comprising drained and undrained triaxial tests in both compression and extension with different consolidation paths for two types of iron …Web
Mineralization Behavior of Iron Ore Nucleus Particles. Iron ore nucleus particles of hematite or limonite with the size of 0.5–1 and 1–2 mm accounting for 25% (wt%) in mixture were added into adhesion layer (75%) for the micro-sintering, and compared with the scheme without nucleus particles.Web
Sticking behaviour and mechanism of iron ore pellets in COREX pre-reduction shaft furnace. Z. Di Zheng-yi Li. +6 authors. Ping Wang. Materials Science. 2019. ABSTRACT COREX is a clean process releasing lower pollution and consuming fewer cokes than the blast furnace process. However, serious sticking phenomenon often …Web
Result showed temperature and basicity both influenced the reduction behaviour of iron ore pellets. Evolution or dissolution of different phases during …Web
Abstract XRD and SEM methods were applied to the reduction behavior and mechanism of iron ore in molten iron at temperatures of 1400 °C, 1450 °C, and 1500 °C. The results …Web
In blast furnaces it is desirable for the burden to hold a lumpy packed structure at as high a temperature as possible. The computational thermodynamic software FactSage (version 7.2, Thermfact/CRCT, Montreal, Canada and GTT-Technologies, Aachen, Germany) was used here to study the softening behavior of blast furnace …Web
The flotation has been successfully applied to process the iron ore for the particle size (Ps) from 10 µm up to 150 µm. The presence of the slimes (Ps < 10 µm) is harmful on the reverse flotation of quartz, so they are usually prior removed by hydrocyclones. The main effects of the presence of slimes on the flotation are related to …Web
This research work focuses on the reduction behavior of iron ore pellets, sinter, and lump ore in simulated BF shaft conditions where H 2 and H 2 O are present in typical CO CO 2 N 2 atmospheres. 2 Experimental Section. Sinter, lump ore, and iron ore pellets were used in experiments. The composition for all three materials is shown in …Web
Degradation of iron ore particles during ironmaking produces airborne particulate matter and reduces process efficiency. The work presented here investigates thermal deterioration of iron ore particles during thermal processing of two types of iron ores, goethite and hematite.While the hematite iron ore showed close to an inert thermal …Web
