The iron ore–carbon composite prepared by the chemical vapor infiltration (CVI) method, in which tar-containing gas is generated by the pyrolysis of carbonaceous resources that are deposited into nano-scale pores (produced by the dehydration of limonite), is possible to achieve rapid reduction compared to the conventional reduction …

The iron ore was prepared by co-precipitation method. As the results, the main mineral and chemical compositions of samples which were investigated by

DOI: 10.1016/J.POWTEC.2018.08.090 Corpus ID: 105849215; Improvement on the thermal cracking performance of pellets prepared from ultrafine iron ore @article{Wong2019ImprovementOT, title={Improvement on the thermal cracking performance of pellets prepared from ultrafine iron ore}, author={Guojing Wong and …

A manufacturing cost analysis of iron ore was estimated to be US$38.45/kg using the CatCost model, and the conventionally prepared iron catalyst was US$71.44/kg using the same model.

But it should be noted that the residues, after the recovery of iron, are up to 70% of total amount of iron ore tailings, and they still face the problem of storage and secondary pollution. Therefore, in order to realize zero-emission of iron ore tailings wastes, we use the residues to prepare cementitious material.

Dephosphorization is essential for utilizing high-phosphorus iron ore (HPIO), and this work prepared reduced iron powder via reductive roasting in a semi-industrial rotary kiln follower by ...

To explore the reduction swelling process of pellets prepared from the Bayan Obo iron ore concentrate, based on the iron oxide reduction theory of pellets, the reduction of pellets prepared from the Bayan Obo iron ore concentrate was analyzed by thermogravimetric experiments and kinetic calculations in three stages. The reason for …

Iron ore tailings (IOTs) and coal gasification slag (CGS) were used to prepare novel ceramsites via high-temperature sintering. The IOTs were activated by NaOH to form a geopolymer that was sintered at 650 °C, 850 °C, and 1050 °C to obtain ceramsites. ... Ceramsite prepared from IOTs has a higher maximum strength (10.53 …

Substituting biofuel for coke breeze in the iron ore sintering process has become increasingly attractive. However, coke breeze and straw char separately distributed in the sinter bed lead to poor-quality sinter because of their different combustibilities. In this investigation, a coke–biochar composite (CBC) is produced from coking coal and raw …

Section snippets Preparation of catalysts. The iron-ore-based catalysts (denoted as IO-) were prepared by a combination of a wet-milling process and a wet impregnation method (see Fig. 1a), which are similar to those reported in our previous studies [19,20].The coarsely ground Colombian iron ore samples, supplied by the …

Iron ore tailings (IOTs) and coal gasification slag (CGS) were used to prepare novel ceramsites via high-temperature sintering. The IOTs were activated by NaOH to form a geopolymer that was ...

Min Hye Youn a., Heondo Jeong a., Shin Wook Kang a., Jung-Il Yang a., Heon Jung a., Dong Hyun Chun a b. Add to Mendeley. …

The comprehensive utilization of iron ore tailings (IOTs) not only resolved environmental problems but also brought huge economic benefits. ... Realizing of ZSM-5 microspheres with enhanced catalytic properties prepared from iron ore tailings via solid-phase conversion method Environ Sci Pollut Res Int. 2023 Jul;30(31):77905-77916. doi: …

Unlike previous dephosphorization studies, the present work complies with a concept to recover phosphorus within the utilization of high-phosphorus oolitic iron ores to prepare Fe-P alloy for high-phosphorus steel production. Simultaneous enrichment of iron and phosphorus can be achieved by directly alloying the high-phosphorus oolitic iron ore …

The iron ore was prepared by co-precipitation method. As the results, the main mineral and chemical compositions of samples which were investigated by XRD and XRF analysis tests, showed that the Lhoong iron ore contain Fe 2 O 3 (93.88%) and some minor impurities, such as SiO 2, MnO, and Al 2 O 3 in varying proportions.

The blast furnace and direct reduction processes have been the major iron production routes for various iron ores (i.e. goethite, hematite, magnetite, maghemite, …

stage, the RSI of pellets is 6.9%. (2) In the second stage of reduction, the limiting link of the. reaction of pellets prepared from the Bayan Obo iron. ore concentrate is the interfacial chemical ...

The reduction process of pellets prepared from the Bayan Obo iron ore concentrate was studied in stages by isothermal kinetics. The reduction degree of iron oxide is calculated according to the mass change before and after the reaction of the sample, and the calculation method is shown in eq 1 = Δ ∑ ×= − −. D m m mm mm.

Iron ore tailings and sludge were used as the raw materials to prepare tailing ceramsites. Iron ore tailings were obtained from Ma'anshan Gushan Mining Co., Ltd of P. R. China. Sludge was obtained from Ma'anshan sewage treatment company. The main composition and content of the raw materials is shown in Table 1. The loss on ignition …

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In this work, we selected iron ore concentrates (Fe 3 O 4) as iron source to synthesize MIL-100(Fe), in which the unreacted iron ore concentrates can be easily separated from the as-prepared MIL-100(Fe) by magnetic (Scheme 1).The whole synthesis process is more conducive to the development of green and waste-free chemical industry …

The development of blast furnace smelting technology with a high proportion of pellets is an important means for improving the utilization rate of complex co-associated mineral resources. The effect of basicity on the reduction swelling performance of pellets prepared from Bayan Obo iron ore concentrate is characterized by the aspects of …

1. Introduction. Iron ore and iron ore pellets are important sources of iron for manufacturing steel. The iron ore production has significantly expanded in recent years, owing to increasing steel …

As the ultrafine iron ore concentrate was used to prepare green pellets, the main problem was the serious cracking during the drying process. The fine particles contacted so closely that the porosity of green pellet was only 16.68%, which finally hindered vapor diffusion, and the cracking temperature was only 370 °C.

The minerals content and its magnetic properties of iron ore from Lhoong mining area, Aceh province were studied. The iron ore was prepared by co-precipitation method. As the results, the main mineral and chemical compositions of samples which were investigated by XRD and XRF analysis tests, showed that the Lhoong iron ore contain Fe2O3 (93.88%) …

The beneficiated ore is then made into various forms of prepared iron (lumps, pellets and sinter) which are then fed, along with lime and/or limestone, into a …

prepared from iron ore tailings via solid‑phase c onversion method Peng Zhang 1 · Xingyue Chen 1 · Y ang W ang 1 · Wei P eng 1 · Zhifeng Ren 1 · Yihong Li 1 · Yibo He 1 · Baoshuai Chu 1

As the ultrafine iron ore concentrate was used to prepare green pellets, the main problem was the serious cracking during the drying process. The fine particles contacted so closely that the ...

The iron ore was prepared by mechanical alloying method. Through Electron Microscope identification, it shown there are fine crystalline structure of Lhoong iron ore. The main mineral morphology ...

The iron-ore-based catalysts (denoted as IO-) were prepared by a combination of a wet-milling process and a wet impregnation method (see Fig. 1 a), which are similar to those reported in our previous studies [19, 20].The coarsely ground Colombian iron ore samples, supplied by the University of Antioquia in Colombia, were used as raw …