Experience of Using Manganese-Containing Materials in …
Manganese is one of the elements present in the composition of steel-making (pig) iron and some of the scrubbing furnace charges. The available information …
Manganese is one of the elements present in the composition of steel-making (pig) iron and some of the scrubbing furnace charges. The available information …
ed glass-ceramics were prepared via a single-step sintering method using high-titanium blast furnace slag and waste glass as the main raw materials The influence of sintering temperature (900 ...
Based on the furnace burden of high content of Al 2 O 3, the process of softening and melting and the characteristic of primary slag were studied with the increase of MgO content in the sinter and adding some MgO into the pellet.The results showed that the content of MgO in the primary slag increased with the increase of MgO in the sinter and pellet.
The viscous behavior of molten slags has played an essential role in determining the performance and productivity of the ironmaking process. Typical blast furnace slags contain many oxides, such as CaO, SiO 2, MgO, and Al 2 O 3, which come from the sinter, lump, flux and coke.Due to the consumption and huge global demand …
Results are presented from an analysis of the temperature of the lining in the shaft and bosh of a blast furnace over a 2.5-year campaign. It is shown that changes in the temperature of the lining over the height and about the circumference of the furnace are affected by changes in the parameters of the raw materials and the smelting process. …
The samples were sintered in a muffle furnace at 1 100°C for 15– 20 min. from publication: Reduction of Zinc Oxide in Manganese Furnace Dust with Tar | Manganese furnace dust is formed when ...
2.2. Experimental methods. Blast-furnace slag samples with the composition presented in Table 1, plus 4 % of ferrochrome alloy slag and 5 %, 7 %, 8 %, and 10 % quartz sand within the match, ferrochrome alloy slag containing Cr 2 O 3 to play the role of nucleating agent. After mixing them completely in a mixing tank, 200 g of the mixture …
into the blast furnace in mixture with sinter. This idea was successfully tested.1) Presently the majority of blast furnaces in Europe, Japan and elsewhere use nut coke although its amount is very different: from 10–20 to 70–100kg/tHM and more.2) Oper-ation of many blast furnaces has proved the possibility of
Process parameters and resultant cost effects are discussed in terms of existing industrial smelting processes, the Submerged Arc Furnace (SAF) and the Blast Furnace (BF), and the AlloyStream ...
Blast furnace smelting has serious disadvantages, such as high coke consumption (~1500 to 2000 kg/t of alloy, which is five to six times higher than in electric furnaces) and high losses of manganese in slag and off-gases. The electric furnace …
As a promising method to strengthen the blast furnace smelting and to realize reduced fuel operation, high-proportion pellet charging has become the practice of BF ironmaking. Use of pellet gives rise to uniform bed permeability in comparison with iron ore or sinter. This leads to better gas–solid contact resulting in higher productivity at …
The second application will evaluate the effect of preheating on the production of high High carbonFerromanganese (targeting 78%Mn) using an AC-furnace as part of the PreMa project.
To utilize blast furnace slag in an environment friendly, economically efficient and high value-added manner, this study successfully prepared glass–ceramics by directly using high-basicity blast furnace slag (R = 1.26) as raw material through low-pressure sintering method (80 kPa). This study examined the influences of particle size, heat …
The effects of Al2O3, MgO, and binary basicity on the viscosity of high alumina blast furnace slag are studied systematically at the temperatures of 1773 K and below using the orthogonal ...
The effect of lime addition in hematite iron ore pellets on its physico-chemical as well as mechanical properties with respect to blast furnace requirement was studied in a laboratory scale with varying basicity i.e. 0-2.0.Increasing addition lime produced more calcium-alumino-silicate phases (slag) as evidenced by SEMEDAX analysis.
The basicity required for iron ore sinter is set by blast furnace slag composition requirements, and therefore varies with the proportion lump iron ore in the burden.
This study revealed that the basicity of the blast furnace slag has direct effect on the melting interval of the slag as higher basicity increases the initial melting temperature. The high amount of Al 2 O 3 and MgO have an effect on and increased the melting interval of the BFS. The amount of MgO in the crystalline part of the cooled slag …
Iron blast furnace is a gigantic counter-current reactor and contributes to the majority of ∼1.8 billion tonnes of steel produced annually. Among various components of the blast furnace, tuyeres made of high-purity copper with protective coatings are the most critical in nature from the viewpoint of smooth furnace operation without interruptions.
Daily average data from a 1033 m3 blast furnace using self-fluxing sinter have been used to investigate the effects of temperature and slag basicity on the sulphide and manganate capacities ...
Agglomeration of manganese ore fines in mini sinter plant and high carbon ferromanganese production in blast furnace at Satka Metallurgical Mill (Satka Chugunoplavilny Zavod / SCHPZ, Russia.
Moreover, many BF furnaces have used high-aluminum-content iron ore, which causes high viscosity and bad permeability of BF gas [4]. And MgO which plays an impotent role in forming molten slag and improving the gas permeability of blast furnace is a crucial component which mainly brought from raw materials [5].
In this work, the effect of high Blaine fineness (2700–3250 cm²/g) on the pellets properties has been studied and the optimum parameters to make it usable for blast furnace have been examined ...
The blast furnace final slag is made from the meltdown liquid of sinter, lump ore, coke and flux at high temperature, and can be approximately considered as a mixture of the five oxides, SiO 2,Al 2O 3, CaO, MgO and TiO 2. There are four kinds of slags with distinct compositions produced at different regions inside the blast furnace via a ...
Recommendations From the above extensive fundamental and practical study on blast furnace No. 3 in the Iron and Steel Co. and other blast furnaces having the same problems due to the presence of high alkali content in the raw materials, the following is recommended for a better operation of the furnace with less troubles, higher productivity ...
A Review of the Production of Ferromanganese in Blast Furnace Jorge Madias metallon 9 de Julio 428, B2900HGJ San Nicolas, Buenos Aires, Argentina Phone/Fax 011 54 3461 427231 E-mail [email protected] Key words: Ferromanganese, blast furnace, manganese ore, MnO reduction, MnO sinter Introduction The production of high …
Results are provided for calculation of the predicted blast furnace operating regime using converter slag in the iron-ore part of the charge without implementing additional measures with the aim of evaluating its effect on process indices. Introduction into a blast furnace charge of fractionated converter slag may be performed in order to …
paign life of blast furnaces is 17 years,3) and it is normally expected that the blast furnace can run up to 40 years by considering the typical average lifetime of the steel plant. It is …
To utilize blast furnace slag in an environment friendly, economically efficient and high value-added manner, this study successfully prepared glass–ceramics by …
High Al2O3 slag is encountered mainly because of high Al2O3/SiO2 ratio in iron ore as well as in sinter and high ash content in coke. These slags are highly viscous. In the case of BF ironmaking, slag …
Recently, sintering thermal treatment has been usually used for the detoxification and reusing of HCFA (Hu et al., 2013; Ma et al., 2017; Song et al., 2008).In the process of cement clinker production, the incorporation of HCFA into the cement kiln after pre-removal of chlorine through water washing has emerged as an acceptable high …
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