Iron (Fe) Ore | Minerals, Occurrence » Geology Science
— Siderite (FeCO3): Siderite is a carbonate iron ore mineral that is typically brownish-yellow to grayish-white in color. It often forms as a result of hydrothermal processes or weathering of other iron-bearing minerals. ... such as pelletization or sintering, to create iron ore pellets or sinter, which are used in blast furnaces to produce iron ...
Sintering of Bakal siderite ore
— A method of preparing siderite ore that expands its applicability in sintering is considered. The results are of great practical importance, since they permit optimal preparation of such ore so as ...
Iron Oxide Ore Mineralogy and Its Plant Flotation Circuits …
— Mining operations usually provide ore of varying characteristics. At the Donganshan Sintering Plant, the ore is a low-grade, complex, hard-to-separate carbonate containing iron ore, and a two-step flotation circuit was previously developed to overcome the negative impact of the carbonates on the reverse flotation process. However, with …
Solid-Fuel Combustion in the Sintering of Siderite Ore
— Two technologies are considered for the preparation of solid fuel used in sintering: crushing with portions of roasted siderite ore whose strength is less than that of the fuel; or crushing of the fuel alone and subsequent mixing with the ore portions.
Optimization of Siderite Ore Sintering Operation Conditions
— Research was сarried out on a pilot plant on sintering of various size siderite ore and limonite taken in various ratios. To study impact of a number of process factors on the sintering process performance and the obtained agglomerate quality at the minimum number of the carried out experiments, one of the experiment planning methods was …
Chapter Advances in Sintering of Iron Ores and …
— Sintering is the most economic and widely used agglomeration process to prepare iron ore fines for blast furnace use. Owing to the depleting reserves of traditional high grade iron ore, there …
Recent advances in iron ore sintering
— Abstract. Sintering is the most economic and widely used agglomeration process to prepare iron ore fines for blast furnace use. Owing to the depleting reserves of traditional high grade iron ore, there …
Studies on the Removal of Harmful Elements During Sintering of Siderite
— Abstract. Addition of small amounts of calcium and magnesium chlorides to the sinter charge of siderite iron ore, to minimise the percentages of harmful elements such as Pb, Zn, Cu, Sb and As was successfully performed.
Calcination and Pelletizing of Siderite Ore | IntechOpen
— In the present study, calcination properties of Hekimhan-Deveci siderite (FeCO3) ore and the effect of calcination process before the pelletization on strength of pellet were investigated and evaluated. Two different calcination processes were followed. One of them is the traditional calcination process and the other one is microwave …
An efficient process to upgrade siderite ore by pre oxidation
— Siderite ore (FeCO3) is an important iron ore resource that is widely distributed around the world. However, it is difficult to process using conventional methods owing to the low iron grade, easy ...
Sintering of Bakal siderite ore | Steel in Translation
— A method of preparing siderite ore that expands its applicability in sintering is considered. The results are of great practical importance, since they permit optimal …
Coproduction of DRI Powder and Semi-coke from Siderite Ore …
Meanwhile, C/Fe mass ratio was elevated to 2.50 in the direct reduction of siderite to generate semi-coke as by-product, which contained 76.11% fixed carbon. Based on the characterization of the semi-coke, it can be used as solid fuel in the iron ore sintering to replace coke breeze and cut production cost.
An efficient process to upgrade siderite ore by pre oxidation
— Semantic Scholar extracted view of "An efficient process to upgrade siderite ore by pre oxidation-magnetization roasting-magnetic separation-acid leaching" by Dingzhen Wang et al. ... as a refractory iron concentrate, deteriorates the permeability of the sintered layer during the sintering process due to its fine particle size and poor ...
Sintering of Bakal siderite ore
A method of preparing siderite ore that expands its applicability in sintering is considered. The results are of great practical importance, since they permit optimal preparation of such ore so as to obtain sinter with satisfactory metallurgical properties.
Coproduction of DRI Powder and Semi-coke from Siderite Ore …
2.2. Procedure of Experiment. The test flow sheet of excessive coal-based direct reduction process to coproduce DRI powder and semi-coke is presented in Fig. 2.Firstly, siderite lump ore was charged into a rotary kiln (bench scale: ϕ120×200 mm, pilot scale: ϕ1000×500 mm) for reduction.The amount of coal required for reduction was determined by designed …
ASPECTS OF SINTERING THE MAGNESIAN IRON ORE …
The consumption of siderite ores of the Bakalskoye deposit can be increased by replacing some of the relatively high-magnesia Bakalsky concentrate (a mixture of roasted siderite …
Classification Flotation of Donganshan Siderite-containing Hematite Ore
— There is 32. 45% Fe in iron ore from Donganshan Sintering Plant. The ore has the characteristics of poor iron and high silicon, main iron ore is hematite, main gangue mineral is quartz, there is ...
Iron processing
Iron ore sintering consists of heating a layer of fines until partial melting occurs and individual ore particles fuse together. For this purpose, a traveling-grate machine is used, and the burning of fine coke (known as coke breeze) within the ore generates the necessary heat. Before being delivered to the sinter machine, the ore mixture is ...
(PDF) Characterization of semi-coke generated by coal …
— The results show that final reduced iron powder assaying 91.56% Fe and 94.66% metallization degree was obtained at an iron recovery of 88.46% under the following conditions: siderite lump ore ...
Characteristics Evaluation and High Effective Utilization of …
— The granulation of iron ore is an important process in the iron ore sintering. It strongly affects the permeability of sinter bed and then affects the productivity and properties of produced sinter such as strength and reducibility. The granulation ability of limonite ores was poor; they should be used with high granulation ability iron ores to ...
A Novel Sintering Process for Porous Iron Ore Sintering …
phobicity/hydrophilicity, etc., impacts the sintering perfor-mance and sinter qualities to a large extent [–61]. During sintering, water plays a key role, as a binder to granulate the iron ore mix. It permeates through ore particles under the inuence of capillary force and reaches the surface and then migrates further into ore particles [6].
Utilisation of semi-coke as by-product derived from coal …
DOI: 10.1080/03019233.2016.1152001 Corpus ID: 138937973; Utilisation of semi-coke as by-product derived from coal-based direct reduction process in iron ore sintering @article{Luo2016UtilisationOS, title={Utilisation of semi-coke as by-product derived from coal-based direct reduction process in iron ore sintering}, author={Yan-hong Luo and De …
(PDF) Coproduction of DRI Powder and Semi-coke from …
— In this paper, an integrated process was developed to beneficiate low grade siderite ore and upgrade inferior coal simultaneously to yield DRI powder and semi-coke.
Thermal decomposition behaviour and kinetics of Xinjiang siderite ore
— In order to provide a better theoretical foundation for utilisation of Xinjiang siderite resources in China, its thermal decomposition behaviour was studied in neutral and oxidising atmospheres by employing thermodynamics analysis, chemical titration, thermogravimetric, and X-ray diffraction means.
Improvement of heat pattern and sinter strength at high …
— Using biomass for partial replacement of coke breeze in iron-ore sintering process is an effective technique as a countermeasure against global warming. However, the sinter strength would be weakened due to the damaged heat pattern at high biomass proportion. ... Coproduction of DRI powder and semi-coke from siderite ore and low rank …
Sintering Hematite Iron Ore
— Table of Contents The authors investigate the influence of the basicity index CaO/SiO2 on the sintering properties of hematite ore mixtures. The experimentation was performed with three different mixtures of ores from Tazadit, Nimba, Mano-River, Itabira, Marcona, Goa, Mapawa and Cassinga. Increasing the basicity index CaO/SiO2 between …
Solid-Fuel Combustion in the Sintering of Siderite Ore
Two technologies are considered for the preparation of solid fuel used in sintering: crushing with portions of roasted siderite ore whose strength is less than that of the fuel; or crushing of the fuel alone and subsequent mixing with the ore portions. On the basis of derivatographic data, kinetic equations are written for the high-temperature combustion …
Examining low nitrogen oxides combustion in iron ore sintering
Nitrogen oxides in iron ore sintering2.1. Emission characteristics. It has been determined that it is almost impossible to replicate technologies of low NOx combustion from other industries for iron ore sintering. Sintering is distinct from a coal-fired furnace, as it involves the three-way coexistence of gas, solids, and liquids.
Solid-Fuel Combustion in the Sintering of Siderite Ore
— Two technologies are considered for the preparation of solid fuel used in sintering: crushing with portions of roasted siderite ore whose strength is less than that …
Evaluating the Thermal Efficiency of a Shaft Furnace for …
— Solid phase sintering and melting of the materials are limited to the cooling zones and proceed to no more than take place more than 1–3% completion. ... The existing technology for roasting siderite ore ensures that the shaft furnaces will have a productivity of 10.5–11.5 tons ore/h and will yield 7.9 tons of roasted product per hour with ...
Effect of bed shrinkage on iron ore sintering process
There exist complex chemical reactions and phase transition processes—melting and solidification—in the iron ore sintering process. This will result in bed shrinkage and has an important impact on the sintering process and sinter properties. Numerical simulation was carried out in this paper, and it is based on the porous medium and double-energy …
Innovative flotation for the utilisation of carbonate-bearing (siderite …
— MS-2, a novel dispersant, was employed to improve the innovative dispersion flotation of carbonate-bearing refractory iron ore.High quality iron concentrates (TFe grade of 67.04% and recovery of 75.57%) were achieved by the locked-cycle flotation tests and analyzed by X-ray diffraction and scanning electron microscopy to investigate the …
Xianlin ZHOU | Lecturer | PhD | Wuhan University of Science …
The catalytic denitrification of sintered ore, the effect of double-layer ignition sintering process on the emission reduction in nitrogen oxides, and the impact on the quality of sintered ore ...
Siderite – WGNHS – UW–Madison
Siderite forms as a sedimentary precipitate, in hydrothermal veins, in metamorphic rocks formed from such protoliths, and, rarely, in pegmatites. In sedimentary environments it forms in extensive beds of banded iron formations and as more localized deposits of bog-iron ore. It readily weathers to iron oxides. ASHLAND COUNTY: Siderite is a common …
Influence of Physical and Chemical Sintering Processes on
To do this, a charge consisting of siderite ore and brown iron ore is subjected to sintering to obtain an agglomerate. The mechanism of reactions occurring in the agglomerated layer …
Iron Ore Sintering: Quality Indices
— Iron Ore Sintering: Quality Indices. D. Fernández-González Grupo de Investigación en Siderurgia, Metalurgia y Materiales, Escuela de Minas, ... Sinter plants process a mixture of iron ore fines, recycled ironmaking products, slag-forming agents and solid fuel (coke) with the finality of obtaining a product with the suitable characteristics ...