Sintering Equipment Magnetite Sand
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- Sintering Equipment Magnetite Sand
Instead of sand and soda you can buy glass bead blasting media (sieved glass powder). The lower melting point is built in and it's cheap. I also wonder if the pieces could be fired post- ...
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The quality of magnetite pellet is primarily determined by the physico-chemical changes the pellet undergoes as it makes excursion through the gaseous and thermal environment in the induration furnace. Among these physico-chemical processes, the oxidation of magnetite phase and the sintering of oxidized magnetite (hematite) …
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high level of magnetite concentrate are more deformable, and thus this could reduce their green bed per-meability during charging and application of suction. SFCA formation in magnetite sintering occurs primarily in the cooling stage as magnetite oxidation is rather limited prior to the arrival of high temperature zone.
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The sintering of chromium-containing vanadium-titanium magnetite using different coke contents was studied through the sintering pot tests, X-ray diffraction analysis and mineralogical phase analysis. Results showed that, as the coke content increased from 3.2% to 4.4%, the liquid phase and combustion zone thickness increased while the …
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However, magnetite–hematite–goethite blend required 9.2 kg · t −1 lower solid fuel rate than the hematite–goethite blend. The lower sintering temperature of the magnetite–hematite–goethite blend than that of the hematite–goethite blend contributed to higher reducibility and lower low temperature degradation under reduction.
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Selective laser sintering (SLS), as a kind of additive manufacturing technology, which uses a laser beam to scan and heat powder material layer by layer to form parts (models), is widely used in the field of casting, mainly for preparing casting coated sand cores, investment casting patterns, etc. The SLS technique facilitates rapid …
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The conventional sintering and casting manufacturing processes for commercial magnets, including Nd-Fe-B, Sm-Co, Alnico, and ferrite, are described in detail. ... magnet experiences and sometimes also the direction of the flux in the magnet. In these cases, it is necessary for the equipment manufacturer to adjust the LC (inductance …
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Low-grade vanadiferous titanomagnetite ore (LVTM) is as an important mineral resource for sintering ore manufacturing. Furthermore, TiO 2 has a significant effect on the sintering process of iron ore fines. The effects of TiO 2 on the metallurgical properties, microstructure, and mineral composition of LVTM sinter were investigated by …
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Maximum drop numbers (>15) were obtained for green pellets produced using milled sand with a D50 between 30 µm and 65 µm. However, ironsand particle size was found to have little clear effect on the sintered pellet strength. ... Mechanisms in oxidation and sintering of magnetite iron ore green pellets. Powder Technol., 183 (2) …
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ORIGINAL PAPER Mineralogical properties and co-sintering characteristics of fluxed iron ore with magnetite concentrates Le-le Niu1 • Zheng-jian Liu1 • Jian-liang Zhang1 • Yao-zu Wang2 • Zhen-xing Yang3 • Si-da Li1 • Chang-dong Shan1 • Ben Feng1 Received: 9 November 2022/Revised: 8 February 2023/Accepted: 12 February 2023/Published …
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As ceramics have the highest melting point of all engineering materials, sintering temperatures usually lie between 1000 and 2000 °C. To control the resulting …
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Sea sand vanadia-titania magnetite is difficult to pelletize, and it is difficult for iron and steel enterprises to use it as a raw material for ironmaking.
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vanadium-titanium magnetite; sintering; crystal; consolidation. 1. Introduction. Vanadium (V), titanium (Ti), and iron (Fe) are important metal elements recognized worldwide. Vanadium-titanium …
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As an application study of rapid prototyping, commercially available silica sand was successfully direct-laser-sintered in a self-developed high-temperature laser sintering equipment. The mechanism of powder-state sand becoming a solid state block during the laser sintering process was disclosed by scanning electron microscope …
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ore sintering can improve the calorific value of sintering flue gas compared with magnetite sintering, which is conducive to recovering heat for secondary use. As the content of the Ca-rich iron ore increases, sinter agglomeration shifts from localized liquid-phase bonding to a combina- ... additional processes and equipment, or the …
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steel enterprises to try to use the sea sand vanadium titano-magnetite resources with low price and high comprehensive utilization value, to reduce the production cost [3 ]. ... and sintering behavior of sea sand ore under dierent con-ditions, to improve the proportion of sea sand ore in the preparation of sinter. The eects of adding a certain ...
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Studies havebeencarried out for sintering of magnetite ore alone.5) It wasfound that magnetite wasless reactive than hematite and piso]ite, and therefore required high sintering temperature to ensure adequate sinter strength. This maybe the main reason whya high coke rate is often associated with magnetite ore blend sintering. Underan …
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High-quality oxidized pellets are the basis to achieve high-efficiency utilization of vanadium–titanium magnetite (VTM) ores. Bentonite was used as a binder of VTM. The main phase composition of VTM is titanomagnetite and ilmenite. When the amount of bentonite is 1%, the compressive strength and dropping strength of VTM …
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The influence of different additive proportions of Indonesian sea sand on sintering index and sinter properties is examined in a laboratory by adjusting the substitution proportion from 5% to 40% ...
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Sintering in the magnetite and hematite phases begins at 950 and 1100 °C, respectively. If the oxidation of the magnetite pellet is not completed before reaching 950 °C, a duplex structure, including an oxidized outer shell and a non-oxidized core, forms. At temperatures above 950 °C, the magnetite core shrinks more than the hematite shell.
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The primary sinter melt solidifies into a sinter matrix typically consisting of hematite, magnetite, SFCA, larnite, and glass during the cooling stage of sintering. ... SO X removal is achieved via installation of sintering flue gas desulfurization equipment. In addition to the conventional wet-type desulfurizing systems using Mg ...
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Sintering started earlier in the magnetite core (950 °C) compared to the hematite shell (1100 °C). The difference in sintering rates increased with increasing …
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Principal mechanisms during oxidation and sintering (dilatation) of magnetite iron ore green pellets were studied. Special attention was paid on variations in raw …
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When sintering the ore blends containing a large amount of magnetite concentrates, a low coke rate is preferred to acquire relatively high oxygen partial pressure, which is beneficial to oxidation ...
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SEM–EDS diagrams of sintered block with sea sand ore in the binder phase strength test process: a 0 wt% HS; b 15 wt% HS; c 35 wt% HS; d EDS analysis at the point 1, 2, and 3 in a to c; e element ...
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Semantic Scholar extracted view of "Effects of Extracted-Vanadium Residue and MgO on the Basic Sintering Characteristics of High-Chromium Vanadium-Titanium Magnetite" by Gongjin Cheng et al. ... Sea sand vanadia-titania magnetite is difficult to pelletize, and it is difficult for iron and steel enterprises to use it as a raw material for ...
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The definition of the sintering process can be summarized as follows: it refers to the various powdery iron-containing raw materials, which are matched with a certain amount of fuel and flux as required, uniformly mixed and granulated, and then clothed to the sintering equipment for ignition and sintering; the fuel combustion …
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The results indicate that the optimal process parameters for direct reduction of vanadium–titanium magnetite in a rotary kiln are as follows: a reduction temperature of 1150 °C, reduction time ...
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Artificial rich ore for blast furnace use can be produced by sintering ultra-poor vanadium-titanium magnetite (PVTM) with a high-grade iron concentrate. Here, acid (R = 0.33, 0.50), self-fluxing (R = …
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Thermal volume changes and oxidation mechanisms in magnetite iron ore green pellets balled with 0.5% bentonite binder, as a function of raw material fineness and pellet porosity, are shown.
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The research results show that the high-temperature sintering characteristics of sea sand vanadia-titania magnetite were the worst, and the grey correlation degree …
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In view of sea sand vanadium titanomagnetite has the problem of poor sintering performance, the high-temperature sintering characteristics of sea sand ore, Yuantong …
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