Vanadium titanium magnetite (V-Ti) ore is one kind of important polymetallic minerals in China and the mainstream route of comprehensive utilization process is blast furnace(BF)→basic oxygen ...
Iron processing - Ores, Smelting, Refining: Iron ores occur in igneous, metamorphic (transformed), or sedimentary rocks in a variety of geologic environments. Most are sedimentary, but many have been changed by weathering, and so their precise origin is difficult to determine. The most widely distributed iron-bearing minerals are oxides, and …
In the CAP process of treating vanadium-titanium magnetite, sintering production using all fines can still ensure good bed permeability, and in addition as shown in Fig. 10, all Ti elements are coalesced inside the pellet and surrounded by the liquid phase of the sinter matrix, avoiding damage to the strength of sinter product.
To investigate the feasibility of co-sintering of fluxed iron ore with magnetite concentrates, the mineralogical properties of a novel fluxed iron ore were studied using particle size analysis, microscopic morphology characterization, and X-ray diffraction Rietveld analysis. Following that, the experiments for granulation performance and basic …
And iron ore sinter production exceeds 80 million tons per year, and CO 2 emission from sintering process accounts for about 3% of the total domes- ... Promotion of Magnetite Ore Oxidation by Use of Separate Granulating Method Masaru MATSUMURA,1) Toru TAKAYAMA, 1) Kyosuke HARA, ...
production in the world. The BF is charged with metallurgical coke and iron-bearing materials separately, which leads to a lay- ... The magnetite in sinter first reduces slowly, yielding a higher reduction rate in pellets at lower temperatures. Gas compositions vary as a function of temperature. When
Chengde chromium-bearing vanadium–titanium magnetite (CCVTM) has been used as an important mineral resource in sinter making. The MgO content of this sinter can be enhanced by adding dolomite, which improved operation of the blast furnace. The effects of MgO in the form of dolomite on metallurgical properties, microstructure …
The primary sinter melt solidifies into a sinter matrix typically consisting of hematite, magnetite, SFCA, larnite, and glass during the cooling stage of sintering. The sinter matrix bonds the initially loose iron ore particles into lumps of clinker-like material and is often called sinter bonding phase. ... This leads to the production of ...
In general, the reduction degree increase as time goes on, which the increase of magnetite phase contents in the sinter ore. When the hematite phase turned into magnetite phase by means of gas reduction, the volume of particles expands by gas penetration via pore, which causes the crack inside of the particle . The RDI linearly …
The effect of basicity on high-chromium vanadium-titanium magnetite (V-Ti-Cr) sintering was studied via sintering pot tests. The sinter rate, yield, and productivity were calculated before determining sinter strength (TI) and reduction degradation index (RDI). Furthermore, the effect of basicity on V-Ti-Cr sinter mineralogy was clarified using …
Iron ore sinter is the most widely used as raw materials for blast furnace in the world. And iron ore sinter production exceeds 80 million tons per year, and CO2 emission from sintering process accounts for about 3% of the total domestic emissions. Here, iron ore quality used as raw material is getting gradually worse. And so, iron ore …
Sintering is the most economic and widely used agglomeration process to prepare iron ore fines for blast furnace use. Compared with pellets, production of sinter …
Fig. 1 shows that the main mineral compositions of T-sinter are calcium ferrite, magnetite, hematite, silicate, and perovskite.Magnetite occupies a large proportion and perovskite exists in silicate as a rhomboid joined crystal. Some hematite is bright white in the local area of T-sinter. l-sinter is mainly composed of magnetite and SFCA, with …
The investigation concerned the use of sinter containing a titanium-vanadium-magnetite concentrate for the production of pig iron. Sinter containing 0,46 to 0,51 % TiO 2 and 0,056 to 0,060 % vanadium was used for pig iron production in the blast furnace. Introducing 200 kg of this concentrate to the1 Mg sinter mix did not cause any ...
It is important to have a high iron content, low gangue content, and basicity of the order of 1.6-2.1. Sinter reducibility, and sinter quality in general, improves with a higher level of hematite than magnetite, and its structure improves with a higher level of primary or residual hematite and ferrites than secondary or precipitated hematite.
DOI: 10.1023/A:1024982325310 Corpus ID: 136920429; Making Sinter from Concentrate of Low-Grade Manganese Ore for Use in the Production of Ferrosilicomanganese @article{Dmitriev2003MakingSF, title={Making Sinter from Concentrate of Low-Grade Manganese Ore for Use in the Production of Ferrosilicomanganese}, author={Andrey …
Soft magnetic compositesSoft magnetic composite are a necessary component to produce efficient electric vehicles. However, the relationship between structure and material properties results in a nearly inevitable trade-off between efficiency and strength. The work...
The tumbler index of the sinter increases coupled with a decrease in abrasion index when the hematite phase diminishes and the magnetite phase grows in the sinter with a slag bond. Sinter quality and production suffer when the oversize fraction exceeds 3 mm. Fig. 7 shows the relationship between the coke breeze consumption and abrasion index [23].
The use of magnetite concentrates in sintering has the potential to improve sinter chemistry, which is deteriorating over time due to the slowly decreasing grade of …
As an alternative process, the production of stainless steel master alloys in blast furnace (BF) exhibits high economic efficiency and great potential to use low-grade chromite resources. To produce desirable sinter products required by the blast furnace smelting process, sintering tests of ore mixtures made from a low grade South African …
Following rapid calculations and analysis, the fuzzy expert system offered a suggested action to update the charge gate position. In addition, the sintering energy …
The production of crude steel in the iron and steel industry in China has grown dramatically, which has made the country the world's largest steel producer since 1996 1,2,3. 40%–60% of the total ...
The effect of the sinter basicity and magnetite concentrate addition on the sinter quality and the formation of liquid phase were investigated under the sintering conditions determined above. ... It is feasible to use the Cr-bearing sinter in blast furnace for production of stainless steel master alloy. 3) The consolidation of non-fluxed Cr ...
Iron ore sinter plants are energy-intensive components of integrated iron and steel production (see Table 1), where the iron ore fines (<5 mm) are converted into larger (>5 mm) lump sinter cakes with greater gas permeability, which are the most important burden materials for iron making in blast furnaces (BFs) [7].The main process is shown …
The production of high-quality sinter is crucial for assuring consistent, stable furnace productivity with a low consumption of …
The sinter TI with 7% NF ore addition could meet the production requirements for its TI was higher than 65%. Totally, the method of V–Ti magnetite ore blend optimization for sinter strength based on iron ore basic sintering characteristics was useful. Introduction. Vanadium and titanium magnetite (V–Ti) ore has a very high …
tering processes not only improves sinter properties but also reduces production costs, which is a promising development direction for sinter production. 2. Experimental 2.1. Materials and sample preparation Return fines, a mixed material, and eight iron ores were used as iron-bearing materials; quickened lime and coke
1.2 Fuel 1.2.1 Coke Breeze . Coke is the major reductant and heat source for blast furnace operation, where the lump coke (25–80 mm) is charged into blast furnace directly, and nut coke (15–25 mm) is mixed with the iron burden (sinter, pellet, or lump) and then charged into the furnace.
