Preparing high-strength titanium pellets for ironmaking …
High-quality titanium pellets were prepared through applying the optimum path for ilmenite oxidization and consolidation in present investigation. The elucidated oxidization behaviors of ilmenite indicated that Fe 2 O 3 and Fe 2 Ti 3 O 9 were formed below 800 °C, and the process was controlled by interface chemical reactions. At 825 °C, …
Optimization of preparation process of high-strength pellets …
The preparation of high-strength pellets from Panzhihua ilmenite concentrate is important for the hydrogen-rich smelting of titania slag and was investigated. The effects of the magnetite concentrate and heating procedure including the pre-heating temperature and period as well as roasting temperature and period on the compressive strength of …
A Novel Process for Preparing High-Strength …
The purpose of this study is to prepare high-strength Pan- xi ilmenite concentrate pellets. In addition, pre-oxidation of ilmenite concentrate is beneficial for the subsequent …
Mechanism of strengthening consolidation and reduction of ilmenite …
Performance indexes of ilmenite green pellets (a) drop numbers and compressive strength, (b) drying time and rate; The microstructure of ilmenite green pellets (c) I0–626.31 cm 2 /g and (d) I3–2051.80 cm 2 /g. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)
Kinetics of the Carbothermal Reduction of Ilmenite: Grain Pellet …
A novel mechanism for the carbothermal reduction of Ilmenite is proposed and validated with the help of a comprehensive mathematical model. A time-dependent isothermal pellet-grain model is used to simulate the kinetic behaviour of a spherical pellet of ilmenite (FeTiO 3) in CO/CO 2 atmosphere. The proposed mechanism involves diffusion of CO …
Electro-deoxidation Process for Producing FeTi from Low-Grade Ilmenite
Abstract Electro-deoxidation of ilmenite (FeTiO3) is an economical production method of FeTi, particularly, if the end use is hydrogen storage. In this study, we show that electro-deoxidation of impure FeTiO3 with Ti content lower than Fe, as in the case of low-grade FeTiO3 ore, results in the formation of a two-phase material consisting …
Ilmenite coated pellet and process for reducing same
Ilmenite coated pellet and process for reducing same US3941583; ... Preferably the matrix of coke is in the form of an external coating to the pellet. PTO PTO PDF Espace: Google: link PDF: Patent. 3941583. Priority. Dec 04 1972. Filed. Nov 26 1973. Issued. Mar 02 1976. Expiry. Nov 26 1993.
Investigation of the Hydrogen-Rich Reduction of Panzhihua Ilmenite …
The hydrogen-rich reduction of ilmenite concentrates has a significant effect on the reduction of the carbon footprint of the titanium slag production process. This study investigates the hydrogen-rich reduction of Panzhihua ilmenite concentrate pellets. The pellets were roasted at 500, 700, 900, and 1100 °C and used as the raw material for the …
Induration aspects of low-grade ilmenite pellets: …
The chemical composition of the ilmenite concentrate is shown in Table 1.As can be seen from Table 1, the concentrate is a low-grade resource of ferruginous ilmenite as it consists of around 50% TiO 2 and 34% FeO. XRD analysis of the sample reveals that the main phases in the sample are ilmenite (FeTiO 3) and hematite (Fe 2 O 3) (Fig. …
REDUCTION KINETICS OF CEMENT-BONDED NATURAL ILMENITE PELLETS …
The hydrogen reduction kinetics of ilmenite was studied thermogravimetrically from I 073 to 1 273 K with three kinds of cement-bonded natural ilmenite pellets. The kinetic behavior of the reduction of preoxidized ilmenite was researched with the same technique from 973 to 1 273 K. The reduction of the pellets …
An Optimal Route for the Preparation of Metallized Composite Pellets
Abstract The present communication describes an investigation on the preparation of metallized composite pellets from ilmenite concentrate. It was observed that the pellet size in the range of 8–12 mm, a binder dosage of 4 wt%, and internal carbon of 5 wt% are the optimum levels that help the pellets attain the desired drop number (~ …
Mechanism of strengthening consolidation and reduction of ilmenite …
@article{Zhang2024MechanismOS, title={Mechanism of strengthening consolidation and reduction of ilmenite pellets through high-pressure grinding rolls pretreatment}, author={Jinlai Zhang and Yu-Feng Guo and Shuai Wang and Feng Chen and Lingzhi Yang and Yixi Zhang and Cong Zhou and Fuchun Xu}, journal={Powder Technology}, …
Pelletizing plant
Global Steel Plant Tracker, a project of Global Energy Monitor. Pelletizing is the process of converting very fine iron ores into spheres (normally 8mm-20mm in …
Kinetics and Mechanisms of Carbothermic Reduction …
The kinetics and mechanisms of carbothermic reduction of a complex Kalimantan weathered ilmenite (FeTiO3) using palm kernel biomass were investigated …
An Analysis of the Influence of Drying Methods on the …
The effects of microwave and conventional oven drying on the drying kinetics and the quality of the ilmenite-coke composite pellets are presented. The drying time was substantially reduced in microwave drying (90 s) compared to conventional oven drying (10 min) for the exact size of composite pellets. The activation energy values in microwave …
US3941583A
US3941583A US05/419,103 US41910373A US3941583A US 3941583 A US3941583 A US 3941583A US 41910373 A US41910373 A US 41910373A US 3941583 A US3941583 A US 3941583A Authority US Unite
(PDF) Reduction Kinetics of Pre-Oxidized Ilmenite Pellets by …
Abstract: The reduction behavior of pelletized and pre-oxidized ilmenite is investigated in H2-H2O. atmospheres containing between 0 and 7% H. O and at temperatures between 983 and 1183 K. (710 ...
Mechanism of strengthening consolidation and reduction of ilmenite …
In comparison to unpretreated ilmenite pellets, the ones with HPGR pretreatment showed a significant reduction of 7.649 kJ/mol in the apparent reaction activation energy during the solid-state reduction process with bituminous coal. Additionally, the microstructure of the reduced ilmenite products experienced enhancements by …
Reduction Kinetics of Pre-Oxidized Ilmenite Pellets by …
Abstract: The reduction behavior of pelletized and pre-oxidized ilmenite is investigated in H2-H2O atmospheres containing between 0 and 7% H2O and at …
Effect of time on metallisation degree in different reduction
In this study, ilmenite and bentonite were uniformly mixed, pelletised, and baked at temperatures up to 1200°C. The reduction of ilmenite pellet by H2/CO mixtures and H2 pure gas was studied in ...
An Optimal Route for the Preparation of Metallized …
Therefore, ilmenite pellets with 5 wt% coke fines and 8–12 mm size are highly recommended to prepare composite pellets. The chemical composition of this …
Investigation on the pre-reduction of ilmenite pellet using …
In this study, ilmenite and bentonite were uniformly mixed, pelletised, and baked at temperatures up to 1200°C. The reduction of ilmenite pellet by H2/CO mixtures and H2 pure gas was studied in ...
Ilmenite: Mineral information, data and localities.
A supposed cubic form of ilmenite. Originally described from Jizerská meadow (Iser meadow), Jizerské Mts (Iser Mts), Liberec Region, Bohemia (Böhmen; Boehmen), Czech Republic. A Mg-Cr-bearing variety from DeBeers mine (kimberlites), associated, i.a., with hawthorneite. A ferrian magnesian variety of ilmenite.
Reduction Kinetics of Pre-Oxidized Ilmenite Pellets …
The reduction behavior of pelletized and pre-oxidized ilmenite is investigated in H 2 -H 2 O atmospheres containing between 0 and 7% H 2 O and at temperatures …
Mechanism of strengthening consolidation and …
Through a comprehensive analysis of the performance and microstructure of ilmenite concentrate particles, oxidized pellets, and pre-reduced pellets, it has been …
Reduction Kinetics of Pre-Oxidized Ilmenite Pellets …
Reduction Kinetics of Pre-Oxidized Ilmenite Pellets by H2-H2O Gas Mixtures. Abstract. The reduction behavior of pelletized and pre-oxidized ilmenite is investigated in H 2 …
Effects of H2, CO, and a gas mixture on the reduction
This study investigates the hydrogen-rich reduction of Panzhihua ilmenite concentrate pellets. The pellets were roasted at 500, 700, 900, and 1100 °C and used as the raw material for the ...
Investigation on the pre-reduction of ilmenite pellet …
Seyed Hassan Arabi. In this study, ilmenite and bentonite were uniformly mixed, pelletised, and baked at temperatures up to 1200°C. The reduction of ilmenite …
Investigation on the pre-reduction of ilmenite pellet using …
2010. The carbothermal reduction of a primary ilmenite concentrate was studied in hydrogen, argon, and helium. Ilmenite and graphite were uniformly mixed and pressed into pellets. Reduction was studied in…. Expand. 54. PDF. Kinetics of acid leaching of ilmenite decomposed by KOH Part 2. Leaching by H2SO4 and C2H2O4.
Reduction Kinetics of Pre-Oxidized Ilmenite Pellets by H
The reduction behavior of pelletized and pre-oxidized ilmenite is investigated in H2-H2O atmospheres containing between 0 and 7% H2O and at temperatures between 983 and 1183 K (710 and 910 °C). The reduction mechanism occurs in two stages wherein the rapid reduction of trivalent to divalent iron cations is followed by the slower …